Add Qt3 development HEAD version

author: Timothy Pearson <kb9vqf@pearsoncomputing.net> 2011-07-10 15:24:15 -0500
committer: Timothy Pearson <kb9vqf@pearsoncomputing.net> 2011-07-10 15:24:15 -0500
commit: bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch)
tree: 7a520322212d48ebcb9fbe1087e7fca28b76185c /examples/demo/opengl
download: qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz
qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip
29 files changed, 4905 insertions, 0 deletions
diff --git a/examples/demo/opengl/fbm.c b/examples/demo/opengl/fbm.c
new file mode 100644
index 0000000..47d5a61
--- /dev/null
+++ b/examples/demo/opengl/fbm.c
@@ -0,0 +1,207 @@
+/*****************************************************************
+
+  Implementation of the fractional Brownian motion algorithm. These
+  functions were originally the work of F. Kenton Musgrave.
+  For documentation of the different functions please refer to the
+  book: 
+  "Texturing and modeling: a procedural approach"
+  by David S. Ebert et. al.
+
+******************************************************************/
+
+#if defined (_MSC_VER)
+#include <qglobal.h>
+#endif
+
+#include <time.h>
+#include <stdlib.h>
+#include "fbm.h"
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4244)
+#endif
+
+/* Definitions used by the noise2() functions */
+
+#define B 0x100
+#define BM 0xff
+
+#define N 0x1000
+#define NP 12   /* 2^N */
+#define NM 0xfff
+
+static int   p[B + B + 2];
+static float g3[B + B + 2][3];
+static float g2[B + B + 2][2];
+static float g1[B + B + 2];
+static int   start = 1;
+
+static void init(void);
+
+#define s_curve(t) ( t * t * (3. - 2. * t) )
+
+#define lerp(t, a, b) ( a + t * (b - a) )
+
+#define setup(i,b0,b1,r0,r1)\
+	t = vec[i] + N;\
+	b0 = ((int)t) & BM;\
+	b1 = (b0+1) & BM;\
+	r0 = t - (int)t;\
+	r1 = r0 - 1.;
+#define at3(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] )
+
+static float noise3(float vec[3]);
+
+/* Fractional Brownian Motion function */
+
+double fBm( Vector point, double H, double lacunarity, double octaves,
+	    int init )
+{
+
+    double            value, frequency, remainder;
+    int               i;
+    static double     exponent_array[10];
+    float             vec[3];
+
+    /* precompute and store spectral weights */
+    if ( init ) {
+	start = 1;
+	srand( time(0) );
+	/* seize required memory for exponent_array */
+	frequency = 1.0;
+	for (i=0; i<=octaves; i++) {
+	    /* compute weight for each frequency */
+	    exponent_array[i] = pow( frequency, -H );
+	    frequency *= lacunarity;
+	}
+    }
+
+    value = 0.0;            /* initialize vars to proper values */
+    frequency = 1.0;
+    vec[0]=point.x;
+    vec[1]=point.y;
+    vec[2]=point.z;
+
+
+    /* inner loop of spectral construction */
+    for (i=0; i<octaves; i++) {
+	/* value += noise3( vec ) * exponent_array[i];*/
+	value += noise3( vec ) * exponent_array[i];
+	vec[0] *= lacunarity;
+	vec[1] *= lacunarity;
+	vec[2] *= lacunarity;
+    } /* for */
+
+    remainder = octaves - (int)octaves;
+    if ( remainder )      /* add in ``octaves''  remainder */
+	/* ``i''  and spatial freq. are preset in loop above */
+	value += remainder * noise3( vec ) * exponent_array[i];
+
+    return( value );
+
+} /* fBm() */
+
+
+float noise3(float vec[3])
+{
+    int bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11;
+    float rx0, rx1, ry0, ry1, rz0, rz1, *q, sy, sz, a, b, c, d, t, u, v;
+    register int i, j;
+
+    if (start) {
+	start = 0;
+	init();
+    }
+
+    setup(0, bx0,bx1, rx0,rx1);
+    setup(1, by0,by1, ry0,ry1);
+    setup(2, bz0,bz1, rz0,rz1);
+
+    i = p[ bx0 ];
+    j = p[ bx1 ];
+
+    b00 = p[ i + by0 ];
+    b10 = p[ j + by0 ];
+    b01 = p[ i + by1 ];
+    b11 = p[ j + by1 ];
+
+    t  = s_curve(rx0);
+    sy = s_curve(ry0);
+    sz = s_curve(rz0);
+
+
+    q = g3[ b00 + bz0 ] ; u = at3(rx0,ry0,rz0);
+    q = g3[ b10 + bz0 ] ; v = at3(rx1,ry0,rz0);
+    a = lerp(t, u, v);
+
+    q = g3[ b01 + bz0 ] ; u = at3(rx0,ry1,rz0);
+    q = g3[ b11 + bz0 ] ; v = at3(rx1,ry1,rz0);
+    b = lerp(t, u, v);
+
+    c = lerp(sy, a, b);
+
+    q = g3[ b00 + bz1 ] ; u = at3(rx0,ry0,rz1);
+    q = g3[ b10 + bz1 ] ; v = at3(rx1,ry0,rz1);
+    a = lerp(t, u, v);
+
+    q = g3[ b01 + bz1 ] ; u = at3(rx0,ry1,rz1);
+    q = g3[ b11 + bz1 ] ; v = at3(rx1,ry1,rz1);
+    b = lerp(t, u, v);
+
+    d = lerp(sy, a, b);
+
+    return lerp(sz, c, d);
+}
+
+static void normalize2(float v[2])
+{
+    float s;
+
+    s = sqrt(v[0] * v[0] + v[1] * v[1]);
+    v[0] = v[0] / s;
+    v[1] = v[1] / s;
+}
+
+static void normalize3(float v[3])
+{
+    float s;
+
+    s = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+    v[0] = v[0] / s;
+    v[1] = v[1] / s;
+    v[2] = v[2] / s;
+}
+
+static void init(void)
+{
+    int i, j, k;
+    
+    for (i = 0 ; i < B ; i++) {
+	p[i] = i;
+
+	g1[i] = (float)((rand() % (B + B)) - B) / B;
+
+	for (j = 0 ; j < 2 ; j++)
+	    g2[i][j] = (float)((rand() % (B + B)) - B) / B;
+	normalize2(g2[i]);
+
+	for (j = 0 ; j < 3 ; j++)
+	    g3[i][j] = (float)((rand() % (B + B)) - B) / B;
+	normalize3(g3[i]);
+    }
+
+    while (--i) {
+	k = p[i];
+	p[i] = p[j = rand() % B];
+	p[j] = k;
+    }
+
+    for (i = 0 ; i < B + 2 ; i++) {
+	p[B + i] = p[i];
+	g1[B + i] = g1[i];
+	for (j = 0 ; j < 2 ; j++)
+	    g2[B + i][j] = g2[i][j];
+	for (j = 0 ; j < 3 ; j++)
+	    g3[B + i][j] = g3[i][j];
+    }
+}
diff --git a/examples/demo/opengl/fbm.h b/examples/demo/opengl/fbm.h
new file mode 100644
index 0000000..474cd3c
--- /dev/null
+++ b/examples/demo/opengl/fbm.h
@@ -0,0 +1,39 @@
+/*****************************************************************
+
+  Prototypes for the fractional Brownian motion algorithm. These
+  functions were originally the work of F. Kenton Musgrave.  For
+  documentation of the different functions please refer to the book:
+  "Texturing and modeling: a procedural approach"
+  by David S. Ebert et. al.
+  
+******************************************************************/
+
+#ifndef _fbm_h
+#define _fbm_h
+
+#include  <math.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TRUE    1
+#define FALSE   0
+
+typedef struct {
+    double x;
+    double y;
+    double z;
+} Vector;
+    
+double fBm( Vector point, double H, double lacunarity, double octaves, 
+	    int init );
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+
diff --git a/examples/demo/opengl/gear.xpm b/examples/demo/opengl/gear.xpm
new file mode 100644
index 0000000..ccba9ec
--- /dev/null
+++ b/examples/demo/opengl/gear.xpm
@@ -0,0 +1,304 @@
+/* XPM */
+static char *gear[] = {
+/* width height num_colors chars_per_pixel */
+"    48    48      249            2",
+/* colors */
+".. c #7a7a7b",
+".# c #afafaf",
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+};
diff --git a/examples/demo/opengl/glbox.cpp b/examples/demo/opengl/glbox.cpp
new file mode 100644
index 0000000..6e9e686
--- /dev/null
+++ b/examples/demo/opengl/glbox.cpp
@@ -0,0 +1,142 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple QGLWidget displaying an openGL wireframe box
+**
+** The OpenGL code is mostly borrowed from Brian Pauls "spin" example
+** in the Mesa distribution
+**
+****************************************************************************/
+
+#include "glbox.h"
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#endif
+
+/*!
+  Create a GLBox widget
+*/
+
+GLBox::GLBox( QWidget* parent, const char* name, WFlags f )
+    : GLControlWidget( parent, name, 0, f )
+{
+    setAnimationDelay( -1 );
+    xRot = yRot = zRot = 0.0;		// default object rotation
+    scale = 1.25;			// default object scale
+    object = 0;
+}
+
+
+/*!
+  Release allocated resources
+*/
+
+GLBox::~GLBox()
+{
+    makeCurrent();
+    glDeleteLists( object, 1 );
+}
+
+
+/*!
+  Paint the box. The actual openGL commands for drawing the box are
+  performed here.
+*/
+
+void GLBox::paintGL()
+{
+    glClear( GL_COLOR_BUFFER_BIT );
+
+    glLoadIdentity();
+    transform();
+    glCallList( object );
+    drawText();
+    qglColor( green );
+    glLineWidth( 1.0 );
+    glBegin( GL_LINES );
+    {
+	glVertex3f( 0.0, 0.0, 0.0 );
+	glVertex3f( 0.98, 0.98, 0.98 );
+    }
+    glEnd();
+    renderText( 1.0, 1.0, 1.0, "Wirebox", QFont( "helvetica", 12, QFont::Bold, TRUE ) );
+}
+
+
+/*!
+  Set up the OpenGL rendering state, and define display list
+*/
+
+void GLBox::initializeGL()
+{
+    qglClearColor( black ); 		// Let OpenGL clear to black
+    object = makeObject();		// Generate an OpenGL display list
+    glShadeModel( GL_FLAT );
+}
+
+
+
+/*!
+  Set up the OpenGL view port, matrix mode, etc.
+*/
+
+void GLBox::resizeGL( int w, int h )
+{
+    glViewport( 0, 0, (GLint)w, (GLint)h );
+    glMatrixMode( GL_PROJECTION );
+    glLoadIdentity();
+    glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
+    glMatrixMode( GL_MODELVIEW );
+}
+
+
+/*!
+  Generate an OpenGL display list for the object to be shown, i.e. the box
+*/
+
+GLuint GLBox::makeObject()
+{	
+    GLuint list;
+
+    list = glGenLists( 1 );
+
+    glNewList( list, GL_COMPILE );
+
+    qglColor( white );		      // Shorthand for glColor3f or glIndex
+
+    glLineWidth( 2.0 );
+
+    glBegin( GL_LINE_LOOP );
+    glVertex3f(  1.0,  0.5, -0.4 );
+    glVertex3f(  1.0, -0.5, -0.4 );
+    glVertex3f( -1.0, -0.5, -0.4 );
+    glVertex3f( -1.0,  0.5, -0.4 );
+    glEnd();
+
+    glBegin( GL_LINE_LOOP );
+    glVertex3f(  1.0,  0.5, 0.4 );
+    glVertex3f(  1.0, -0.5, 0.4 );
+    glVertex3f( -1.0, -0.5, 0.4 );
+    glVertex3f( -1.0,  0.5, 0.4 );
+    glEnd();
+
+    glBegin( GL_LINES );
+    glVertex3f(  1.0,  0.5, -0.4 );   glVertex3f(  1.0,  0.5, 0.4 );
+    glVertex3f(  1.0, -0.5, -0.4 );   glVertex3f(  1.0, -0.5, 0.4 );
+    glVertex3f( -1.0, -0.5, -0.4 );   glVertex3f( -1.0, -0.5, 0.4 );
+    glVertex3f( -1.0,  0.5, -0.4 );   glVertex3f( -1.0,  0.5, 0.4 );
+    glEnd();
+
+    glEndList();
+
+    return list;
+}
diff --git a/examples/demo/opengl/glbox.h b/examples/demo/opengl/glbox.h
new file mode 100644
index 0000000..6f5089b
--- /dev/null
+++ b/examples/demo/opengl/glbox.h
@@ -0,0 +1,43 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple QGLWidget displaying an openGL wireframe box
+**
+****************************************************************************/
+
+#ifndef GLBOX_H
+#define GLBOX_H
+
+#include "glcontrolwidget.h"
+
+class GLBox : public GLControlWidget
+{
+    Q_OBJECT
+
+public:
+
+    GLBox( QWidget* parent = 0, const char* name = 0, WFlags f = 0 );
+    ~GLBox();
+
+protected:
+
+    void		initializeGL();
+    void		paintGL();
+    void		resizeGL( int w, int h );
+
+    virtual GLuint 	makeObject();
+
+private:
+    GLuint object;
+};
+
+
+#endif // GLBOX_H
diff --git a/examples/demo/opengl/glcontrolwidget.cpp b/examples/demo/opengl/glcontrolwidget.cpp
new file mode 100644
index 0000000..d81d328
--- /dev/null
+++ b/examples/demo/opengl/glcontrolwidget.cpp
@@ -0,0 +1,195 @@
+#include "glcontrolwidget.h"
+
+#include <qcursor.h>
+#include <qtimer.h>
+
+#include <math.h>
+
+GLControlWidget::GLControlWidget( QWidget *parent, const char *name, QGLWidget *share, WFlags f )
+: QGLWidget( parent, name, share, f ),
+  xRot(0),yRot(0),zRot(0),xTrans(0),yTrans(0),zTrans(-10.0),scale(5.0), animation(TRUE), wasAnimated(FALSE), delay( 50 )
+{
+    setCursor( pointingHandCursor  );
+    timer = new QTimer( this );
+    connect( timer, SIGNAL(timeout()), SLOT(animate()) );
+    timer->start( delay );
+}
+
+void GLControlWidget::transform()
+{
+    glTranslatef( xTrans, yTrans, zTrans );
+    glScalef( scale, scale, scale );
+
+    glRotatef( xRot, 1.0, 0.0, 0.0 );
+    glRotatef( yRot, 0.0, 1.0, 0.0 );
+    glRotatef( zRot, 0.0, 0.0, 1.0 );
+}
+
+void GLControlWidget::drawText()
+{
+    glPushAttrib( GL_LIGHTING_BIT | GL_TEXTURE_BIT );
+    glDisable( GL_LIGHTING );
+    glDisable( GL_TEXTURE_2D );
+    qglColor( white );
+    QString str( "Rendering text in OpenGL is easy with Qt" );
+    QFontMetrics fm( font() );
+    renderText( (width() - fm.width( str )) / 2, 15, str );
+    QFont f( "courier", 8 );
+    QFontMetrics fmc( f );
+    qglColor( QColor("skyblue") );
+    int x, y, z;
+    x = (xRot >= 0) ? (int) xRot % 360 : 359 - (QABS((int) xRot) % 360);
+    y = (yRot >= 0) ? (int) yRot % 360 : 359 - (QABS((int) yRot) % 360);
+    z = (zRot >= 0) ? (int) zRot % 360 : 359 - (QABS((int) zRot) % 360);
+    str.sprintf( "Rot X: %03d - Rot Y: %03d - Rot Z: %03d", x, y, z );
+    renderText( (width() - fmc.width( str )) / 2, height() - 15, str, f );
+    glPopAttrib();
+}
+
+/*!
+  Set the rotation angle of the object to \e degrees around the X axis.
+*/
+void GLControlWidget::setXRotation( double degrees )
+{
+    xRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Y axis.
+*/
+void GLControlWidget::setYRotation( double degrees )
+{
+    yRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+
+/*!
+  Set the rotation angle of the object to \e degrees around the Z axis.
+*/
+void GLControlWidget::setZRotation( double degrees )
+{
+    zRot = (GLfloat)fmod(degrees, 360.0);
+    updateGL();
+}
+
+void GLControlWidget::setScale( double s )
+{
+    scale = s;
+    updateGL();
+}
+
+void GLControlWidget::setXTrans( double x )
+{
+    xTrans = x;
+    updateGL();
+}
+
+void GLControlWidget::setYTrans( double y )
+{
+    yTrans = y;
+    updateGL();
+}
+
+void GLControlWidget::setZTrans( double z )
+{
+    zTrans = z;
+    updateGL();
+}
+
+void GLControlWidget::setRotationImpulse( double x, double y, double z )
+{
+    setXRotation( xRot + 180*x );
+    setYRotation( yRot + 180*y );
+    setZRotation( zRot - 180*z );
+}
+
+void GLControlWidget::setTranslationImpulse( double x, double y, double z )
+{
+    setXTrans( xTrans + 2*x );
+    setYTrans( yTrans - 2*y );
+    setZTrans( zTrans + 2*z );
+}
+
+void GLControlWidget::mousePressEvent( QMouseEvent *e )
+{
+    e->accept();
+    oldPos = e->pos();
+}
+
+void GLControlWidget::mouseReleaseEvent( QMouseEvent *e )
+{
+    e->accept();
+    oldPos = e->pos();
+}
+
+void GLControlWidget::mouseMoveEvent( QMouseEvent *e )
+{
+    e->accept();
+    double dx = e->x() - oldPos.x();
+    double dy = e->y() - oldPos.y();
+
+    oldPos = e->pos();
+
+    double rx = dx / width();
+    double ry = dy / height();
+
+    if ( e->state() == LeftButton )
+	setRotationImpulse( ry, rx, 0 );
+    else if ( e->state() == RightButton )
+	setRotationImpulse( ry, 0, rx );
+    else if ( e->state() == MidButton )
+	setTranslationImpulse( rx, ry, 0 );
+    else if ( e->state() == ( LeftButton | RightButton ) )
+	setTranslationImpulse( rx, 0, ry );
+}
+
+void GLControlWidget::wheelEvent( QWheelEvent *e )
+{
+    e->accept();
+    if ( scale <= ( (double)e->delta() / 1000 ) )
+	return;
+    setScale( scale - ( (double)e->delta() / 1000 ));
+}
+
+void GLControlWidget::mouseDoubleClickEvent( QMouseEvent * )
+{
+    if ( delay <= 0 )
+	return;
+
+    animation = !animation;
+    if ( animation )
+	timer->start( delay );
+    else
+	timer->stop();
+}
+
+void GLControlWidget::showEvent( QShowEvent *e )
+{
+    if ( wasAnimated && !timer->isActive() )
+	timer->start( delay );
+
+    QGLWidget::showEvent( e );
+}
+
+void GLControlWidget::hideEvent( QHideEvent *e )
+{
+    wasAnimated = timer->isActive();
+    timer->stop();
+    QGLWidget::hideEvent( e );
+}
+
+void GLControlWidget::animate()
+{
+}
+
+void GLControlWidget::setAnimationDelay( int ms )
+{
+    timer->stop();
+    delay = ms;
+    if ( animation ) {
+	wasAnimated = TRUE;
+	timer->start( delay );
+    }
+}
diff --git a/examples/demo/opengl/glcontrolwidget.h b/examples/demo/opengl/glcontrolwidget.h
new file mode 100644
index 0000000..05d026f
--- /dev/null
+++ b/examples/demo/opengl/glcontrolwidget.h
@@ -0,0 +1,56 @@
+#ifndef GLCONTROLWIDGET_H
+#define GLCONTROLWIDGET_H
+
+#include <qgl.h>
+
+class GLControlWidget : public QGLWidget
+{
+    Q_OBJECT
+
+public:
+    GLControlWidget( QWidget *parent, const char *name = 0, QGLWidget *share = 0, WFlags f = 0 );
+
+    virtual void	transform();
+
+public slots:
+    void		setXRotation( double degrees );
+    void		setYRotation( double degrees );
+    void		setZRotation( double degrees );
+
+    void		setScale( double s );
+
+    void		setXTrans( double x );
+    void		setYTrans( double y );
+    void		setZTrans( double z );
+
+    virtual void	setRotationImpulse( double x, double y, double z );
+    virtual void	setTranslationImpulse( double x, double y, double z );
+    void		drawText();
+
+protected:
+    void		setAnimationDelay( int ms );
+    void		mousePressEvent( QMouseEvent *e );
+    void		mouseReleaseEvent( QMouseEvent *e );
+    void		mouseMoveEvent( QMouseEvent * );
+    void		mouseDoubleClickEvent( QMouseEvent * );
+    void		wheelEvent( QWheelEvent * );
+
+    void		showEvent( QShowEvent * );
+    void		hideEvent( QHideEvent * );
+
+    GLfloat xRot, yRot, zRot;
+    GLfloat xTrans, yTrans, zTrans;
+    GLfloat scale;
+    bool animation;
+
+protected slots:
+    virtual void	animate();
+
+private:
+    bool wasAnimated;
+    QPoint oldPos;
+    QTimer* timer;
+    int delay;
+};
+
+#endif
diff --git a/examples/demo/opengl/glgear.cpp b/examples/demo/opengl/glgear.cpp
new file mode 100644
index 0000000..e9b837b
--- /dev/null
+++ b/examples/demo/opengl/glgear.cpp
@@ -0,0 +1,271 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+//
+// Draws a gear.
+//
+// Portions of this code have been borrowed from Brian Paul's Mesa
+// distribution.
+//
+
+#include "glgear.h"
+
+#include <math.h>
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#endif
+
+/*
+ * Draw a gear wheel.  You'll probably want to call this function when
+ * building a display list since we do a lot of trig here.
+ *
+ * Input:  inner_radius - radius of hole at center
+ *	   outer_radius - radius at center of teeth
+ *	   width - width of gear
+ *	   teeth - number of teeth
+ *	   tooth_depth - depth of tooth
+ */
+static void gear( GLfloat inner_radius, GLfloat outer_radius, GLfloat width,
+		  GLint teeth, GLfloat tooth_depth )
+{
+    GLint i;
+    GLfloat r0, r1, r2;
+    GLfloat angle, da;
+    GLfloat u, v, len;
+
+    r0 = inner_radius;
+    r1 = outer_radius - tooth_depth/2.0;
+    r2 = outer_radius + tooth_depth/2.0;
+
+    const double pi = 3.14159264;
+    da = 2.0*pi / teeth / 4.0;
+
+    glShadeModel( GL_FLAT );
+
+    glNormal3f( 0.0, 0.0, 1.0 );
+
+    /* draw front face */
+    glBegin( GL_QUAD_STRIP );
+    for (i=0;i<=teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+	glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 );
+	glVertex3f( r1*cos(angle), r1*sin(angle), width*0.5 );
+	glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 );
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5 );
+    }
+    glEnd();
+
+    /* draw front sides of teeth */
+    glBegin( GL_QUADS );
+    da = 2.0*pi / teeth / 4.0;
+    for (i=0;i<teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+
+	glVertex3f( r1*cos(angle),      r1*sin(angle),	  width*0.5 );
+	glVertex3f( r2*cos(angle+da),   r2*sin(angle+da),	  width*0.5 );
+	glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5 );
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5 );
+    }
+    glEnd();
+
+
+    glNormal3f( 0.0, 0.0, -1.0 );
+
+    /* draw back face */
+    glBegin( GL_QUAD_STRIP );
+    for (i=0;i<=teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+	glVertex3f( r1*cos(angle), r1*sin(angle), -width*0.5 );
+	glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 );
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), -width*0.5 );
+	glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 );
+    }
+    glEnd();
+
+    /* draw back sides of teeth */
+    glBegin( GL_QUADS );
+    da = 2.0*pi / teeth / 4.0;
+    for (i=0;i<teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), -width*0.5 );
+	glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da), -width*0.5 );
+	glVertex3f( r2*cos(angle+da),   r2*sin(angle+da),	  -width*0.5 );
+	glVertex3f( r1*cos(angle),      r1*sin(angle),	  -width*0.5 );
+    }
+    glEnd();
+
+
+    /* draw outward faces of teeth */
+    glBegin( GL_QUAD_STRIP );
+    for (i=0;i<teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+
+	glVertex3f( r1*cos(angle),      r1*sin(angle),	   width*0.5 );
+	glVertex3f( r1*cos(angle),      r1*sin(angle),	  -width*0.5 );
+	u = r2*cos(angle+da) - r1*cos(angle);
+	v = r2*sin(angle+da) - r1*sin(angle);
+	len = sqrt( u*u + v*v );
+	u /= len;
+	v /= len;
+	glNormal3f( v, -u, 0.0 );
+	glVertex3f( r2*cos(angle+da),   r2*sin(angle+da),	   width*0.5 );
+	glVertex3f( r2*cos(angle+da),   r2*sin(angle+da),	  -width*0.5 );
+	glNormal3f( cos(angle), sin(angle), 0.0 );
+	glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da),  width*0.5 );
+	glVertex3f( r2*cos(angle+2*da), r2*sin(angle+2*da), -width*0.5 );
+	u = r1*cos(angle+3*da) - r2*cos(angle+2*da);
+	v = r1*sin(angle+3*da) - r2*sin(angle+2*da);
+	glNormal3f( v, -u, 0.0 );
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da),  width*0.5 );
+	glVertex3f( r1*cos(angle+3*da), r1*sin(angle+3*da), -width*0.5 );
+	glNormal3f( cos(angle), sin(angle), 0.0 );
+    }
+
+    glVertex3f( r1*cos(0.0), r1*sin(0.0), width*0.5 );
+    glVertex3f( r1*cos(0.0), r1*sin(0.0), -width*0.5 );
+
+    glEnd();
+
+
+    glShadeModel( GL_SMOOTH );
+
+    /* draw inside radius cylinder */
+    glBegin( GL_QUAD_STRIP );
+    for (i=0;i<=teeth;i++) {
+	angle = i * 2.0*pi / teeth;
+	glNormal3f( -cos(angle), -sin(angle), 0.0 );
+	glVertex3f( r0*cos(angle), r0*sin(angle), -width*0.5 );
+	glVertex3f( r0*cos(angle), r0*sin(angle), width*0.5 );
+    }
+    glEnd();
+
+}
+
+void GLGear::draw()
+{
+    glPushMatrix();
+    glRotatef( view_rotx, 1.0, 0.0, 0.0 );
+    glRotatef( view_roty, 0.0, 1.0, 0.0 );
+    glRotatef( view_rotz, 0.0, 0.0, 1.0 );
+
+    glPushMatrix();
+    glTranslatef( -3.0, -2.0, 0.0 );
+    glRotatef( angle, 0.0, 0.0, 1.0 );
+    glCallList(gear1);
+    glPopMatrix();
+
+    glPushMatrix();
+    glTranslatef( 3.1, -2.0, 0.0 );
+    glRotatef( -2.0*angle-9.0, 0.0, 0.0, 1.0 );
+    glCallList(gear2);
+    glPopMatrix();
+
+    glPushMatrix();
+    glTranslatef( -3.1, 2.2, -1.8 );
+    glRotatef( 90.0, 1.0, 0.0, 0.0 );
+    glRotatef( 2.0*angle-2.0, 0.0, 0.0, 1.0 );
+    glCallList(gear3);
+    glPopMatrix();
+
+    glPopMatrix();
+}
+
+GLGear::GLGear( QWidget *parent, const char *name, WFlags f )
+     : GLControlWidget( parent, name, 0, f )
+{
+    scale = 1.0;
+    setAnimationDelay( 15 );
+    view_rotx = 20.0;
+    view_roty = 30.0;
+    view_rotz = 0.0;
+    angle = 0.0;
+}
+
+void GLGear::initializeGL()
+{
+    static GLfloat pos[4] = {5.0, 5.0, 10.0, 1.0 };
+    static GLfloat ared[4] = {0.8, 0.1, 0.0, 1.0 };
+    static GLfloat agreen[4] = {0.0, 0.8, 0.2, 1.0 };
+    static GLfloat ablue[4] = {0.2, 0.2, 1.0, 1.0 };
+
+    glLightfv( GL_LIGHT0, GL_POSITION, pos );
+    glEnable( GL_CULL_FACE );
+    glEnable( GL_LIGHTING );
+    glEnable( GL_LIGHT0 );
+    glEnable( GL_DEPTH_TEST );
+
+    /* make the gears */
+    gear1 = glGenLists(1);
+    glNewList(gear1, GL_COMPILE);
+    glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, ared );
+    gear( 1.0, 4.0, 1.0, 20, 0.7 );
+    glEndList();
+
+    gear2 = glGenLists(1);
+    glNewList(gear2, GL_COMPILE);
+    glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, agreen );
+    gear( 0.5, 2.0, 2.0, 10, 0.7 );
+    glEndList();
+
+    gear3 = glGenLists(1);
+    glNewList(gear3, GL_COMPILE);
+    glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, ablue );
+    gear( 1.3, 2.0, 0.5, 10, 0.7 );
+    glEndList();
+
+    glEnable( GL_NORMALIZE );
+}
+
+
+void GLGear::resizeGL( int width, int height )
+{
+    GLfloat w = (float) width / (float) height;
+    GLfloat h = 1.0;
+
+    glViewport( 0, 0, width, height );
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glFrustum( -w, w, -h, h, 5.0, 60.0 );
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    glTranslatef( 0.0, 0.0, -40.0 );
+}
+
+
+void GLGear::paintGL()
+{
+    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+    glPushMatrix();
+    transform();
+    draw();
+    drawText();
+    
+    glPushAttrib( GL_LIGHTING_BIT | GL_TEXTURE_BIT );
+    glDisable( GL_LIGHTING );
+    glDisable( GL_TEXTURE_2D );
+    qglColor( green );
+    glLineWidth( 1.0 );
+    glBegin( GL_LINES );
+    {
+	glVertex3f( 0.0, 0.0, 0.0 );
+	glVertex3f( 2.98, 2.98, 2.98 );
+    }
+    glEnd();
+    renderText( 3.0, 3.0, 3.0, "Gears", QFont( "helvetica", 12, QFont::Bold, TRUE ) );
+    glPopMatrix();
+    glPopAttrib();
+}
+
+void GLGear::animate()
+{
+    angle += 2.0;
+    view_roty += 1.0;
+    updateGL();
+}
diff --git a/examples/demo/opengl/glgear.h b/examples/demo/opengl/glgear.h
new file mode 100644
index 0000000..e728765
--- /dev/null
+++ b/examples/demo/opengl/glgear.h
@@ -0,0 +1,26 @@
+#ifndef GLGEAR_H
+#define GLGEAR_H
+
+#include "glcontrolwidget.h"
+
+class GLGear : public GLControlWidget
+{
+    Q_OBJECT
+
+public:
+    GLGear( QWidget *parent = 0, const char *name = 0, WFlags f = 0 );
+
+protected:
+    void draw();
+    void animate();
+    void initializeGL();
+    void resizeGL( int, int );
+    void paintGL();
+    
+private:
+    GLfloat view_rotx, view_roty, view_rotz;
+    GLint gear1, gear2, gear3;
+    GLfloat angle;
+};
+
+#endif // GLGEAR_H
diff --git a/examples/demo/opengl/glinfo.h b/examples/demo/opengl/glinfo.h
new file mode 100644
index 0000000..1e1d1dd
--- /dev/null
+++ b/examples/demo/opengl/glinfo.h
@@ -0,0 +1,26 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#ifndef GLINFO_H
+#define GLINFO_H
+
+#include <qstring.h>
+
+class GLInfo
+{
+public:
+    GLInfo();
+    QString info();//extensions();
+/*     QString configs(); */
+
+protected:
+    QString infotext;
+/*     QString config; */
+};
+#endif
diff --git a/examples/demo/opengl/glinfo_x11.cpp b/examples/demo/opengl/glinfo_x11.cpp
new file mode 100644
index 0000000..1137ef9
--- /dev/null
+++ b/examples/demo/opengl/glinfo_x11.cpp
@@ -0,0 +1,257 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#define QT_CLEAN_NAMESPACE // avoid clashes with Xmd.h
+
+#include <qstringlist.h>
+#include <qgl.h>
+#include "glinfo.h"
+
+#include <GL/glx.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+
+#ifndef GLX_NONE_EXT
+#define GLX_NONE_EXT  0x8000
+#endif
+
+typedef struct visualAttribs {
+    /* X visual attribs */
+    int id;
+    int c_class;
+    int depth;
+    int redMask, greenMask, blueMask;
+    int colormapSize;
+    int bitsPerRGB;
+    /* GL visual attribs */
+    int supportsGL;
+    int transparent;
+    int bufferSize;
+    int level;
+    int rgba;
+    int doubleBuffer;
+    int stereo;
+    int auxBuffers;
+    int redSize, greenSize, blueSize, alphaSize;
+    int depthSize;
+    int stencilSize;
+    int accumRedSize, accumGreenSize, accumBlueSize, accumAlphaSize;
+    int numSamples, numMultisample;
+    int visualCaveat;
+} VisualAttribs;
+
+static void screenInfo( Display *dpy, int scrnum, QString &infotext )
+{
+    const char *serverVendor = glXQueryServerString( dpy, scrnum, GLX_VENDOR );
+    const char *serverVersion = glXQueryServerString( dpy, scrnum, GLX_VERSION );
+    const char *serverExtensions = glXQueryServerString( dpy, scrnum, GLX_EXTENSIONS );
+    const char *clientVendor = glXGetClientString( dpy, GLX_VENDOR );
+    const char *clientVersion = glXGetClientString( dpy, GLX_VERSION );
+    const char *clientExtensions = glXGetClientString( dpy, GLX_EXTENSIONS );
+    const char *glxExtensions = glXQueryExtensionsString( dpy, scrnum );
+    const char *glVendor = (const char *) glGetString( GL_VENDOR );
+    const char *glRenderer = (const char *) glGetString( GL_RENDERER );
+    const char *glVersion = (const char *) glGetString( GL_VERSION );
+    const char *glExtensions = (const char *) glGetString( GL_EXTENSIONS );
+    const char *gluVersion = (const char *) gluGetString( (GLenum) GLU_VERSION );
+    const char *gluExtensions = (const char *) gluGetString( (GLenum) GLU_EXTENSIONS );
+
+    infotext.sprintf( "%sServer GLX vendor string: %s\n", infotext.ascii(), serverVendor );
+    infotext.sprintf( "%sServer GLX version string: %s\n", infotext.ascii(), serverVersion );
+    infotext.sprintf( "%sServer GLX extensions:\n", infotext.ascii() );
+
+    infotext += QString( serverExtensions ).replace( ' ', '\n' ) + "\n\n";
+
+    infotext.sprintf( "%sClient GLX vendor string: %s\n", infotext.ascii(), clientVendor );
+    infotext.sprintf( "%sClient GLX version string: %s\n", infotext.ascii(), clientVersion );
+    infotext.sprintf( "%sClient GLX extensions:\n", infotext.ascii() );
+
+    infotext += QString( clientExtensions ).replace( ' ', '\n' ) + "\n\n";
+
+    infotext.sprintf( "%sGLX extensions:\n", infotext.ascii() );
+
+    infotext += QString( glxExtensions ).replace( ' ', '\n' ) + "\n\n";
+
+    infotext.sprintf( "%sOpenGL vendor string: %s\n", infotext.ascii(), glVendor );
+    infotext.sprintf( "%sOpenGL renderer string: %s\n", infotext.ascii(), glRenderer );
+    infotext.sprintf( "%sOpenGL version string: %s\n", infotext.ascii(), glVersion );
+    infotext.sprintf( "%sOpenGL extensions:\n", infotext.ascii() );
+
+    infotext += QString( glExtensions ).replace( ' ', '\n' ) + "\n\n";
+
+    infotext.sprintf( "%sGLU version: %s\n", infotext.ascii(), gluVersion );
+    infotext.sprintf( "%sGLU extensions:\n", infotext.ascii() );
+
+    infotext += QString( gluExtensions ).replace( ' ', '\n' ) + "\n\n";
+}
+
+static const char * visualClassName( int cls )
+{
+    switch ( cls ) {
+	case StaticColor:
+	    return "StaticColor";
+	case PseudoColor:
+	    return "PseudoColor";
+	case StaticGray:
+	    return "StaticGray";
+	case GrayScale:
+	    return "GrayScale";
+	case TrueColor:
+	    return "TrueColor";
+	case DirectColor:
+	    return "DirectColor";
+	default:
+	    return "";
+   }
+}
+
+static const char * caveatString( int caveat )
+{
+    switch ( caveat ) {
+#if defined(GLX_EXT_visual_rating)
+	case GLX_NONE_EXT:
+	    return "None";
+	case GLX_SLOW_VISUAL_EXT:
+	    return "Slow";
+	case GLX_NON_CONFORMANT_VISUAL_EXT:
+	    return "Nonconformant";
+#endif
+	default:
+	    return "<none>";
+   }
+}
+
+static void visualAttribs( Display * dpy, XVisualInfo * vi, VisualAttribs * attribs )
+{
+    memset( attribs, 0, sizeof( VisualAttribs ) );
+
+    attribs->id = vi->visualid;
+    attribs->c_class = vi->c_class;
+    attribs->depth = vi->depth;
+    attribs->redMask = vi->red_mask;
+    attribs->greenMask = vi->green_mask;
+    attribs->blueMask = vi->blue_mask;
+    attribs->colormapSize = vi->colormap_size;
+    attribs->bitsPerRGB = vi->bits_per_rgb;
+
+    if ( glXGetConfig( dpy, vi, GLX_USE_GL, &attribs->supportsGL ) != 0 )
+        return;
+    attribs->accumAlphaSize = 0;
+    glXGetConfig( dpy, vi, GLX_BUFFER_SIZE, &attribs->bufferSize );
+    glXGetConfig( dpy, vi, GLX_LEVEL, &attribs->level );
+    glXGetConfig( dpy, vi, GLX_RGBA, &attribs->rgba );
+    glXGetConfig( dpy, vi, GLX_DOUBLEBUFFER, &attribs->doubleBuffer );
+    glXGetConfig( dpy, vi, GLX_STEREO, &attribs->stereo );
+    glXGetConfig( dpy, vi, GLX_AUX_BUFFERS, &attribs->auxBuffers );
+    glXGetConfig( dpy, vi, GLX_RED_SIZE, &attribs->redSize );
+    glXGetConfig( dpy, vi, GLX_GREEN_SIZE, &attribs->greenSize );
+    glXGetConfig( dpy, vi, GLX_BLUE_SIZE, &attribs->blueSize );
+    glXGetConfig( dpy, vi, GLX_ALPHA_SIZE, &attribs->alphaSize );
+    glXGetConfig( dpy, vi, GLX_DEPTH_SIZE, &attribs->depthSize );
+    glXGetConfig( dpy, vi, GLX_STENCIL_SIZE, &attribs->stencilSize );
+    glXGetConfig( dpy, vi, GLX_ACCUM_RED_SIZE, &attribs->accumRedSize );
+    glXGetConfig( dpy, vi, GLX_ACCUM_GREEN_SIZE, &attribs->accumGreenSize );
+    glXGetConfig( dpy, vi, GLX_ACCUM_BLUE_SIZE, &attribs->accumBlueSize );
+    glXGetConfig( dpy, vi, GLX_ACCUM_ALPHA_SIZE, &attribs->accumAlphaSize );
+
+    attribs->transparent = 0; // transparent pixel missing
+    attribs->numSamples = 0; // multisample tests missing
+    attribs->numMultisample = 0;
+
+#if defined(GLX_EXT_visual_rating)
+    const char *ext = glXQueryExtensionsString( dpy, vi->screen );
+    if ( ext && strstr( ext, "GLX_EXT_visual_rating" ) )
+        glXGetConfig(dpy, vi, GLX_VISUAL_CAVEAT_EXT, &attribs->visualCaveat);
+    else
+        attribs->visualCaveat = GLX_NONE_EXT;
+#else
+    attribs->visualCaveat = 0;
+#endif
+}
+
+static void visualInfo( Display *dpy, int scrnum, QString &configs )
+{
+    QString str;
+    XVisualInfo *visuals, temp;
+    int numVisuals;
+    long mask;
+    int i;
+
+    /* get list of all visuals on this screen */
+    temp.screen = scrnum;
+    mask = VisualScreenMask;
+    visuals = XGetVisualInfo( dpy, mask, &temp, &numVisuals );
+
+    VisualAttribs attribs;
+    configs.append( "Vis  Vis   Visual Trans  buff lev render DB ste  r   g   b   a  aux dep ste  accum buffers  MS   MS\n"
+		    " ID Depth   Type  parent size el   type     reo sz  sz  sz  sz  buf th  ncl  r   g   b   a  num bufs Caveat\n"
+		    "-----------------------------------------------------------------------------------------------------------\n" );
+    for ( i = 0; i < numVisuals; i++ ) {
+	visualAttribs( dpy, &visuals[i], &attribs );
+	str.sprintf( "0x%2x %2d %-12s %d     %2d  %d  %-4s   %d   %d   %d   %d   %d   %d"
+		     "   %d   %2d  %d  %2d  %2d  %2d  %2d   %d   %d   %s\n",
+		     attribs.id,
+		     attribs.depth,
+		     visualClassName( attribs.c_class ),
+		     attribs.transparent,
+		     attribs.bufferSize,
+		     attribs.level,
+		     attribs.rgba ? "rgba" : "ci",
+		     attribs.doubleBuffer,
+		     attribs.stereo,
+		     attribs.redSize,
+		     attribs.greenSize,
+		     attribs.blueSize,
+		     attribs.alphaSize,
+		     attribs.auxBuffers,
+		     attribs.depthSize,
+		     attribs.stencilSize,
+		     attribs.accumRedSize,
+		     attribs.accumGreenSize,
+		     attribs.accumBlueSize,
+		     attribs.accumAlphaSize,
+		     attribs.numSamples,
+		     attribs.numMultisample,
+		     caveatString( attribs.visualCaveat ) );
+	configs.append( str );
+    }
+
+
+    XFree( visuals );
+}
+
+GLInfo::GLInfo()
+{
+    QGLWidget gl((QWidget *) 0);
+    gl.makeCurrent();
+    Display *dpy;
+    char *displayName = 0;
+    int numScreens, scrNum;
+
+    dpy = gl.x11Display();
+    if ( !dpy ) {
+        qWarning( "Error: unable to open display %s\n", displayName );
+    }
+
+    numScreens = ScreenCount( dpy );
+    infotext.sprintf( "Display name: %s\nDirect rendering: %s\n", DisplayString( dpy ),
+ 		       gl.format().directRendering() ? "Yes" : "No" );
+
+    for ( scrNum = 0; scrNum < numScreens; scrNum++ ) {
+	screenInfo( dpy, scrNum, infotext );
+	visualInfo( dpy, scrNum, infotext );
+	if ( scrNum + 1 < numScreens )
+	    infotext.append( "\n\n" );
+    }
+}
+
+QString GLInfo::info()
+{
+    return infotext;
+}
diff --git a/examples/demo/opengl/glinfotext.h b/examples/demo/opengl/glinfotext.h
new file mode 100644
index 0000000..7d7b656
--- /dev/null
+++ b/examples/demo/opengl/glinfotext.h
@@ -0,0 +1,23 @@
+#include <qlayout.h>
+#include <qtextview.h>
+#include <qfont.h>
+#include "glinfo.h"
+
+class GLInfoText : public QWidget
+{
+public:
+    GLInfoText(QWidget *parent) 
+	: QWidget(parent)
+    {
+	view = new QTextView(this);
+	view->setFont(QFont("courier", 10));
+	view->setWordWrap(QTextEdit::NoWrap);
+	QHBoxLayout *l = new QHBoxLayout(this);
+	l->addWidget(view);
+	GLInfo info;
+	view->setText(info.info());
+    }
+    
+private:
+    QTextView *view;
+};
diff --git a/examples/demo/opengl/gllandscape.cpp b/examples/demo/opengl/gllandscape.cpp
new file mode 100644
index 0000000..e11c8c9
--- /dev/null
+++ b/examples/demo/opengl/gllandscape.cpp
@@ -0,0 +1,880 @@
+#include <qimage.h>
+#include "gllandscape.h"
+
+
+#include <math.h>
+
+#include "fbm.h"
+
+#ifndef PI
+#define PI 3.14159
+#endif
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#pragma warning(disable:4244) // init: truncation from const double to float
+#endif
+
+GLLandscape::GLLandscape( QWidget * parent, const char * name )
+    : QGLWidget( parent, name )
+{
+    mouseButtonDown  = FALSE;
+    animationRunning = FALSE;
+    oldX = oldY = oldZ = 0.0;
+    landscape     = 0;
+    vertexNormals = 0;
+    normals       = 0;
+    wave          = 0;
+    wt            = 0;
+    cubeRot 	  = 0;
+    createGrid( 50 );
+    setWireframe( 0 );
+}
+
+GLLandscape::~GLLandscape()
+{
+    destroyGrid();
+}
+
+void GLLandscape::initializeGL()
+{
+    glMatrixMode( GL_MODELVIEW );
+    glLoadIdentity();
+    glGetFloatv( GL_MODELVIEW_MATRIX,(GLfloat *) views[AxisView].model );
+    
+    glTranslatef( 0.0, 0.0, -50.0 );
+    glRotatef( -45, 1, 0, 0 );
+    glRotatef( -45, 0, 0, 1 );
+    glGetFloatv( GL_MODELVIEW_MATRIX,(GLfloat *) views[CurrentView].model );
+    glGetFloatv( GL_MODELVIEW_MATRIX,(GLfloat *) views[DefaultView].model );
+
+    glMatrixMode( GL_PROJECTION );
+    glLoadIdentity();
+    /* Use GL utility library function to obtain desired view */
+    gluPerspective( 60, 1, 1, 250 );
+    glGetFloatv( GL_PROJECTION_MATRIX, (GLfloat *)views[CurrentView].projection );
+    glGetFloatv( GL_PROJECTION_MATRIX, (GLfloat *)views[DefaultView].projection );
+
+    qglClearColor( black );
+    glDepthFunc( GL_LESS );
+    calculateVertexNormals();
+
+    QImage tex;
+    tex.load("opengl/qtlogo.png");
+    tex = QGLWidget::convertToGLFormat(tex);  // flipped 32bit RGBA
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+    glTexImage2D(GL_TEXTURE_2D, 0, 3, tex.width(), tex.height(), 0,
+		 GL_RGBA, GL_UNSIGNED_BYTE, tex.bits());
+    initDisplayLists();
+}
+
+void GLLandscape::resizeGL( int width, int height )
+{
+    glViewport( 0, 0, width, height );
+}
+
+void GLLandscape::paintGL()
+{
+    QString str;
+    GLboolean lighting;
+    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+    switch ( mode ) {
+	case Wireframe:
+	    drawWireframe();
+	    str = tr( "Wireframe" );
+	    break;
+	case Filled:
+	    drawFilled();
+	    str = tr( "Flat shaded" );
+	    break;
+	case SmoothShaded:
+	    str = tr( "Smooth shaded" );
+	    drawSmoothShaded();
+	    break;
+	case Landscape:
+	    drawSmoothShaded();
+	    str = tr( "Landscape" );
+	    break;
+    }
+    glGetBooleanv( GL_LIGHTING, &lighting );
+    if ( lighting )
+	glDisable( GL_LIGHTING );
+    qglColor( white );
+    renderText(15, height() - 15, str);
+    drawAxis();
+    drawCube();
+    if ( lighting )
+	glEnable( GL_LIGHTING );
+}
+
+void GLLandscape::drawAxis()
+{
+    glPushAttrib(GL_ALL_ATTRIB_BITS);
+    glViewport(15, 20, 50, 50);	 
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(-1.1, 1.1, -1.1, 1.1, 0.1, 10);
+    glTranslatef(0, 0, -1.2);
+    glRotatef(-45, 1, 0, 0);
+    glRotatef(-45, 0, 0, 1);
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadMatrixf((GLfloat *) views[AxisView].model);
+    
+    glCallList(axisList);
+    qglColor(white);
+    renderText(1.1f, 0, 0, "x");
+    renderText(0, 1.1f, 0, "y");
+    renderText(0, 0, 1.1f, "z");
+    
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glPopAttrib();
+}
+
+void GLLandscape::drawCube()
+{
+    glPushAttrib(GL_ALL_ATTRIB_BITS);
+    glViewport(width()-75, 0, 75, 75);	 
+    glMatrixMode( GL_PROJECTION );
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(-1.1, 1.1, -1.1, 1.1, 0.1, 10);
+    glTranslatef(0, 0, -1.2);
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+    glRotatef(cubeRot, 1, 0, 0);
+    glRotatef(cubeRot, 0, 1, 0);
+    glRotatef(cubeRot, 0, 0, 1);
+    glTranslatef(-0.5, -0.5, -0.5);
+    
+    glCallList(cubeList);
+
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glPopAttrib();
+}
+
+void GLLandscape::drawWireframe()
+{
+    qglColor( white );
+    glBegin( GL_LINES );
+    {
+	for ( int y = 0; y < (gridSize-1); y++ )
+	    for ( int x = 0; x < (gridSize-1); x++) {
+		glVertex3f( x-gridHalf, y-gridHalf, landscape[x][y] );
+		glVertex3f( x+1-gridHalf, y-gridHalf, landscape[x+1][y] );
+		glVertex3f( x-gridHalf, y-gridHalf, landscape[x][y] );
+		glVertex3f( x+1-gridHalf, y+1-gridHalf, landscape[x+1][y+1] );
+
+		glVertex3f( x-gridHalf, y-gridHalf, landscape[x][y] );
+		glVertex3f( x-gridHalf, y+1-gridHalf, landscape[x][y+1] );
+	    }
+    }
+    glEnd();
+    glBegin( GL_LINE_STRIP );
+    {
+	for ( int x = 0; x < gridSize; x++ ) {
+	    glVertex3f( x-gridHalf, gridHalf-1, landscape[x][gridSize-1] );
+	}
+    }
+    glEnd();
+    glBegin( GL_LINE_STRIP );
+    {
+	for ( int y = 0; y < gridSize; y++ ) {
+	    glVertex3f( gridHalf-1, y-gridHalf, landscape[gridSize-1][y] );
+	}
+    }
+    glEnd();
+}
+
+void GLLandscape::drawFilled()
+{
+    for ( int y = 0; y < gridSize-1; y++ )
+	for ( int x = 0; x < gridSize-1; x++ ) {
+	    qglColor( red );
+	    glBegin( GL_TRIANGLE_STRIP );
+	    {
+		glVertex3f(x-gridHalf,y-gridHalf, landscape[x][y]);
+		glVertex3f(x+1-gridHalf,y-gridHalf, landscape[x+1][y]);
+		glVertex3f(x-gridHalf,y+1-gridHalf, landscape[x][y+1]);
+	    }
+	    glEnd();
+	    qglColor( white );
+	    glBegin( GL_TRIANGLE_STRIP );
+	    {
+		glVertex3f(x+1-gridHalf,y-gridHalf, landscape[x+1][y]);
+		glVertex3f(x+1-gridHalf,y+1-gridHalf, landscape[x+1][y+1]);
+		glVertex3f(x-gridHalf,y+1-gridHalf, landscape[x][y+1]);
+	    }
+	    glEnd();
+	}
+}
+
+void GLLandscape::drawSmoothShaded()
+{
+    if ( mode == SmoothShaded ) {
+	GLfloat materialAmbient[]   = { 0.00, 0.00, 1.0, 0.0 };
+	GLfloat materialShininess[] = { 128.0 };
+	GLfloat materialSpecular[]  = { 1.0, 1.0, 1.0, 0.0 };
+
+	glMaterialfv( GL_FRONT, GL_SPECULAR, materialSpecular );
+	glMaterialfv( GL_FRONT, GL_AMBIENT, materialAmbient );
+	glMaterialfv( GL_FRONT, GL_SHININESS, materialShininess );
+    } else {
+	GLfloat materialAmbient[]   = { 0.20, 0.33, 0.20, 0.0 };
+	GLfloat materialShininess[] = { 1.0 };
+	GLfloat materialSpecular[]  = { 0.1, 0.1, 0.1, 0.1 };
+
+	glMaterialfv( GL_FRONT, GL_SPECULAR, materialSpecular );
+	glMaterialfv( GL_FRONT, GL_AMBIENT, materialAmbient );
+	glMaterialfv( GL_FRONT, GL_SHININESS, materialShininess );
+    }
+
+    for ( int y = 0; y < gridSize-1; y++ )
+	for ( int x = 0; x < gridSize-1; x++ ) {
+	    glBegin( GL_POLYGON );
+	    {
+		glNormal3dv(vertexNormals[x][y].n);
+		glVertex3f(x-gridHalf,y-gridHalf,landscape[x][y]);
+
+		glNormal3dv(vertexNormals[x+1][y].n);
+		glVertex3f(x+1-gridHalf, y-gridHalf, landscape[x+1][y]);
+
+		glNormal3dv(vertexNormals[x+1][y+1].n);
+		glVertex3f(x+1-gridHalf, y+1-gridHalf, landscape[x+1][y+1]);
+	    }
+	    glEnd();
+
+	    glBegin( GL_POLYGON );
+	    {
+		glNormal3dv(vertexNormals[x][y].n);
+		glVertex3f(x-gridHalf,y-gridHalf, landscape[x][y]);
+
+		glNormal3dv(vertexNormals[x+1][y+1].n);
+		glVertex3f(x+1-gridHalf,y+1-gridHalf, landscape[x+1][y+1]);
+
+		glNormal3dv(vertexNormals[x][y+1].n);
+		glVertex3f(x-gridHalf,y+1-gridHalf, landscape[x][y+1]);
+	    }
+	    glEnd();
+	}
+
+    // Draw water
+    if ( mode == Landscape ) {
+	GLfloat materialAmbient[]   = { 0.00, 0.00, 1.0, 0.0 };
+	GLfloat materialShininess[] = { 128.0 };
+	GLfloat materialSpecular[]  = { 1.0, 1.0, 1.0, 0.0 };
+
+	glMaterialfv( GL_FRONT, GL_SPECULAR, materialSpecular );
+	glMaterialfv( GL_FRONT, GL_AMBIENT, materialAmbient );
+	glMaterialfv( GL_FRONT, GL_SHININESS, materialShininess );
+	
+	glEnable( GL_BLEND );
+	glBegin( GL_POLYGON );
+	{
+	    glNormal3f( 0, 0, 1 );
+	    glVertex3f( -gridHalf, -gridHalf, .2 );
+	    glNormal3f( 0, 0, 1 );
+	    glVertex3f( -gridHalf, gridHalf, .2 );
+	    glNormal3f( 0, 0, 1 );
+	    glVertex3f( gridHalf, gridHalf, .2 );
+	    glNormal3f( 0, 0, 1 );
+	    glVertex3f( gridHalf, -gridHalf, .2 );
+	
+	}
+	glEnd();
+	glDisable( GL_BLEND );
+    }
+}
+
+void GLLandscape::setGridSize( int size )
+{
+    destroyGrid();      // destroy old grid
+    createGrid( size ); // create new grid
+    initializeGL();
+    updateGL();
+}
+
+void GLLandscape::createGrid( int size )
+{
+    if ( (size % 2) != 0 )
+	size++;
+    gridSize = size;
+    gridHalf = gridSize / 2;
+    initFractals  = TRUE;
+    landscape     = new double*[gridSize];
+    normals       = new gridNormals*[gridSize];
+    vertexNormals = new avgNormals*[gridSize];
+    wt            = new double*[gridSize];
+    wave          = new double*[gridSize];
+    for ( int i = 0; i < gridSize; i++ ) {
+	landscape[i]     = new double[gridSize];
+	normals[i]       = new gridNormals[gridSize];
+	vertexNormals[i] = new avgNormals[gridSize];
+	wt[i]   = new double[gridSize];
+	wave[i] = new double[gridSize];
+
+	memset( landscape[i], 0, gridSize*sizeof(double) );
+	memset( normals[i], 0, gridSize*sizeof(gridNormals) );
+	memset( vertexNormals[i], 0, gridSize*sizeof(avgNormals) );
+	memset( wt[i], 0, gridSize*sizeof(double) );
+	memset( wave[i], 0, gridSize*sizeof(double) );
+    }
+}
+
+void GLLandscape::destroyGrid()
+{
+    if ( landscape != NULL ) {
+	for( int i = 0; i < gridSize; i++ ) {
+	    delete[] landscape[i];
+	    delete[] normals[i];
+	    delete[] vertexNormals[i];
+	    delete[] wt[i];
+	    delete[] wave[i];
+	}
+	delete[] landscape;
+	delete[] normals;
+	delete[] vertexNormals;
+	delete[] wt;
+	delete[] wave;
+    }
+    landscape = 0;
+}
+
+void GLLandscape::rotate( GLfloat deg, Axis axis )
+{
+    makeCurrent();
+    glMatrixMode( GL_MODELVIEW );
+    for ( int i = DefaultView; i <= AxisView; i++ ) {
+	glLoadMatrixf((GLfloat *) views[i].model);
+	if ( axis == XAxis )
+	    glRotatef( deg, 1, 0, 0 );
+	else if ( axis == YAxis )
+	    glRotatef( deg, 0, 1, 0 );
+	else
+	    glRotatef( deg, 0, 0, 1 );
+	glGetFloatv(GL_MODELVIEW_MATRIX, (GLfloat *) views[i].model);
+    }
+    glLoadMatrixf((GLfloat *) views[CurrentView].model);
+}
+
+void GLLandscape::rotateX( int deg )
+{
+    static int oldDeg = 0;
+
+    rotate( deg-oldDeg, XAxis );
+    oldDeg = deg;
+    updateGL();
+}
+
+void GLLandscape::rotateY( int deg )
+{
+    static int oldDeg = 0;
+
+    rotate( deg-oldDeg, YAxis );
+    oldDeg = deg;
+    updateGL();
+}
+
+void GLLandscape::rotateZ( int deg )
+{
+    static int oldDeg = 0;
+
+    rotate( deg-oldDeg, ZAxis );
+    oldDeg = deg;
+    updateGL();
+}
+
+void GLLandscape::zoom( int z )
+{
+    float zoom;
+    if ( z < 100 ) {
+	zoom = 1 + 4.99 - (z*5.0 / 100.0);
+    } else {
+	z = 200 - z;
+	zoom = z / 100.0;
+    }
+    makeCurrent();
+    glMatrixMode( GL_MODELVIEW );
+    // Always scale the original model matrix
+    glLoadMatrixf((GLfloat *) views[DefaultView].model);
+    glScalef( zoom, zoom, zoom );
+    glGetFloatv(GL_MODELVIEW_MATRIX, (GLfloat *) views[CurrentView].model);
+    updateGL();
+}
+
+void GLLandscape::resetGrid()
+{
+    setGridSize( gridSize );
+}
+
+void GLLandscape::fractalize()
+{
+    Vector p;
+    double value;
+    double roughness = 0.5;
+    int frequency    = 50;
+
+    p.x = p.y = p.z = 0;
+    // Initialise fbm routine
+    if ( initFractals ) {
+	initFractals = FALSE;
+	value = fBm( p, roughness, 2.0, 8.0, 1 );
+    }
+
+    // Fractalize grid
+    for ( int x = 0; x < gridSize; x++ ) {
+	for ( int y = 0; y < gridSize; y++ ) {
+	    p.x = (double) x / (101 - frequency);
+	    p.y = (double) y / (101 - frequency);
+	    p.z = (double) landscape[x][y] / (101 - frequency);
+	    value = fBm(p, roughness, 2.0, 8.0, 0);
+	    landscape[x][y] += value;
+	}
+    }
+    calculateVertexNormals();
+    updateGL();
+}
+
+
+//
+// Calculate the vector cross product of v and w, store result in n.
+//
+static void crossProduct( double v[3], double w[3], double n[3] )
+{
+    n[0] = v[1]*w[2]-w[1]*v[2];
+    n[1] = w[0]*v[2]-v[0]*w[2];
+    n[2] = v[0]*w[1]-w[0]*v[1];
+}
+
+void GLLandscape::calculateVertexNormals()
+{
+    double len, v[3], v2[3], w[3], w2[3], n[3], n2[3];
+
+    // Calculate the surface normals for all polygons in the
+    // height field
+    for ( int i = 0; i < (gridSize-1); i++ )
+	for ( int k = 0; k < (gridSize-1); k++ ) {
+	    /* Lower poly normal */
+	    v[0] = 1; // (i+1)-i
+	    v[1] = 0; // k-k
+	    v[2] = landscape[i+1][k]-landscape[i][k];
+	    w[0] = 1; // (i+1)-i
+	    w[1] = 1; // (k+1)-k
+	    w[2] = landscape[i+1][k+1]-landscape[i][k];
+	    crossProduct( v, w, n );
+	    len = sqrt(n[0]*n[0]+n[1]*n[1]+n[2]*n[2]);
+	    normals[i][k].l[0] = n[0]/len;
+	    normals[i][k].l[1] = n[1]/len;
+	    normals[i][k].l[2] = n[2]/len;
+
+	    /* Upper poly normal */
+	    v2[0] = -1.0; // i-(i+1);
+	    v2[1] = 0.0;  // (k+1)-(k+1);
+	    v2[2] = landscape[i][k+1]-landscape[i+1][k+1];
+	    w2[0] = -1.0; // i-(i+1);
+	    w2[1] = -1.0; // k-(k+1);
+	    w2[2] = landscape[i][k]-landscape[i+1][k+1];
+	    crossProduct( v2, w2, n2 );
+	    len = sqrt(n2[0]*n2[0]+n2[1]*n2[1]+n2[2]*n2[2]);
+	    normals[i][k].u[0] = n2[0]/len;
+	    normals[i][k].u[1] = n2[1]/len;
+	    normals[i][k].u[2] = n2[2]/len;
+	}
+
+    // Calculate proper vertex normals
+    averageNormals();
+}
+
+void GLLandscape::averageNormals()
+{
+    // Calculate the average surface normal for a vertex based on
+    // the normals of the surrounding polygons
+    for ( int i = 0; i < gridSize; i++ )
+	for ( int k = 0; k < gridSize; k++ ) {
+	    if ( i > 0 && k > 0 && i < (gridSize-1) && k < (gridSize-1) ) {
+		// For vertices that are *not* on the edge of the height field
+		for ( int t = 0; t < 3; t++ ) // X, Y and Z components
+		    vertexNormals[i][k].n[t] = ( normals[i][k].u[t] +
+						 normals[i][k].l[t] +
+						 normals[i][k-1].u[t] +
+						 normals[i-1][k-1].u[t] +
+						 normals[i-1][k-1].l[t] +
+						 normals[i-1][k].l[t] )/6.0;
+	    } else {
+		// Vertices that are on the edge of the height field require
+		// special attention..
+		if ( i == 0 && k == 0 ) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = ( normals[i][k].u[t] +
+						     normals[i][k].l[t] )/2.0;
+		} else if ( i == gridSize-1 && k == gridSize-1 ) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = ( normals[i][k].u[t] +
+						     normals[i][k].l[t] )/2.0;
+		} else if ( i == gridSize-1) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = vertexNormals[i-1][k].n[t];
+		} else if ( k == gridSize-1 ) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = vertexNormals[i][k-1].n[t];
+		} else if ( k > 0 ) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = (normals[i][k].u[t] +
+						    normals[i][k].l[t] +
+			                            normals[i][k-1].u[t])/3.0;
+		} else if ( i > 0 ) {
+		    for ( int t = 0; t < 3; t++ )
+			vertexNormals[i][k].n[t] = (normals[i][k].u[t] +
+						    normals[i][k].l[t] +
+			                            normals[i-1][k].l[t])/3.0;
+		}
+	    }
+	}
+}
+
+void GLLandscape::setWireframe( int state )
+{
+    if ( state != 1 ) {
+	// Enable line antialiasing
+	makeCurrent();
+	glEnable( GL_LINE_SMOOTH );
+	glEnable( GL_BLEND );
+	glDisable( GL_DEPTH_TEST );
+	glDisable( GL_LIGHTING );
+	glDisable( GL_NORMALIZE );
+
+	glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+	glHint( GL_LINE_SMOOTH_HINT, GL_DONT_CARE );
+
+	mode = Wireframe;
+	updateGL();
+    }
+}
+
+void GLLandscape::setFilled( int state )
+{
+    if ( state != 1 ) {
+	makeCurrent();
+	glEnable( GL_DEPTH_TEST );
+	glDisable( GL_LINE_SMOOTH );
+	glDisable( GL_BLEND );
+	glDisable( GL_LIGHTING );
+	glDisable( GL_NORMALIZE );
+
+	mode = Filled;
+	updateGL();
+    }
+}
+
+void GLLandscape::setSmoothShaded( int state )
+{
+    if ( state != 1 ) {
+	makeCurrent();
+	glEnable( GL_DEPTH_TEST );
+	glEnable( GL_LIGHTING );
+	glEnable( GL_LIGHT0 );
+	glEnable( GL_NORMALIZE );
+	glDisable( GL_LINE_SMOOTH );
+	glDisable( GL_BLEND );
+
+	glShadeModel( GL_SMOOTH );
+	glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE );
+
+	// Setup lighting and material properties
+	GLfloat position[] = { 15.0, -15.0, 15.0, 0.0 };
+	GLfloat ambient[]  = { 0.50, 0.50, 0.50, 0.0 };
+	GLfloat diffuse[]  = { 1.00, 1.00, 1.00, 0.0 };
+	GLfloat specular[] = { 1.0, 1.0, 1.0, 0.0 };
+	GLfloat materialAmbient[]   = { 0.00, 0.00, 1.0, 0.0 };
+        // GLfloat materialDiffuse[]   = { 1.00, 1.00, 1.0, 0.0 };
+	GLfloat materialShininess[] = { 128.0 };
+	GLfloat materialSpecular[]  = { 1.0, 1.0, 1.0, 0.0 };
+
+	glMaterialfv( GL_FRONT, GL_SPECULAR, materialSpecular );
+        // glMaterialfv( GL_FRONT, GL_DIFFUSE, materialDiffuse );
+	glMaterialfv( GL_FRONT, GL_AMBIENT, materialAmbient );
+	glMaterialfv( GL_FRONT, GL_SHININESS, materialShininess );
+
+	glLightfv( GL_LIGHT0, GL_POSITION, position );
+	glLightfv( GL_LIGHT0, GL_AMBIENT, ambient );
+	glLightfv( GL_LIGHT0, GL_DIFFUSE, diffuse );
+	glLightfv( GL_LIGHT0, GL_SPECULAR, specular );
+
+	mode = SmoothShaded;
+	calculateVertexNormals();
+	updateGL();
+    }
+}
+
+void GLLandscape::setLandscape( int state )
+{
+    if ( state != 1 ) {
+	makeCurrent();
+	glEnable( GL_DEPTH_TEST );
+	glEnable( GL_LIGHTING );
+	glEnable( GL_LIGHT0 );
+	glEnable( GL_NORMALIZE );
+	glDisable( GL_LINE_SMOOTH );
+	glDisable( GL_BLEND );
+
+	glShadeModel( GL_SMOOTH );
+	glLightModeli( GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE );
+
+	// Setup lighting and material properties
+	GLfloat position[] = { 15.0, -15.0, 15.0, 0.0 };
+	GLfloat ambient[]  = { 0.50, 0.50, 0.50, 0.0 };
+	GLfloat diffuse[]  = { 1.00, 1.00, 1.00, 0.0 };
+	GLfloat specular[] = { 1.0, 1.0, 1.0, 0.0 };
+	
+	glLightfv( GL_LIGHT0, GL_POSITION, position );
+	glLightfv( GL_LIGHT0, GL_AMBIENT, ambient );
+	glLightfv( GL_LIGHT0, GL_DIFFUSE, diffuse );
+	glLightfv( GL_LIGHT0, GL_SPECULAR, specular );
+
+	glBlendFunc(GL_SRC_ALPHA, GL_SRC_COLOR );
+
+	mode = Landscape;
+	calculateVertexNormals();
+	updateGL();
+    }
+}
+
+void GLLandscape::mousePressEvent( QMouseEvent *e )
+{
+    oldPos = e->pos();
+    mouseButtonDown = TRUE;
+}
+
+void GLLandscape::mouseReleaseEvent( QMouseEvent *e )
+{
+    oldPos = e->pos();
+    mouseButtonDown = FALSE;
+}
+
+void GLLandscape::mouseMoveEvent( QMouseEvent *e )
+{
+    GLfloat rx = (GLfloat) (e->x() - oldPos.x()) / width();
+    GLfloat ry = (GLfloat) (e->y() - oldPos.y()) / height();
+
+    if ( e->state() == LeftButton ) {
+	// Left button down - rotate around X and Y axes
+	oldX = 180*ry;
+	oldY = 180*rx;
+	rotate( oldX, XAxis );
+	rotate( oldY, YAxis );
+	updateGL();
+    } else if ( e->state() == RightButton ) {
+	// Right button down - rotate around X and Z axes
+	oldX = 180*ry;
+	oldZ = 180*rx;
+	rotate( oldX, XAxis );
+	rotate( oldZ, ZAxis );
+	updateGL();
+    }
+    oldPos = e->pos();
+}
+
+void GLLandscape::timerEvent( QTimerEvent *e )
+{
+    if (e->timerId() == cubeTimer) {
+  	cubeRot += 1;
+	if (!animationRunning)
+	    updateGL();
+	return;
+    } 
+    
+    int dx, dy; // disturbance point
+    float s, v, W, t;
+    int i, j;
+
+    if ( mode == Landscape ) {
+	dx = dy = 0;
+    } else {
+	dx = dy = gridSize >> 1;
+    }
+    W = 0.3;
+    v = -4; // wave speed
+
+    for ( i = 0; i < gridSize; i++ )
+	for ( j = 0; j < gridSize; j++ )
+	{
+	    s = sqrt( (double) ( (j - dx) * (j - dx) + (i - dy) * (i - dy) ) );
+	    wt[i][j] += 0.1;
+	    t = s / v;
+
+	    if ( mode == Landscape ) {
+		if ( (landscape[i][j] + wave[i][j]) < 0 )
+		    landscape[i][j] -= wave[i][j];
+		if ( (dy - j != 0) || (dx - i != 0) )
+		    wave[i][j] = (3 * sin( 2 * PI * W * (wt[i][j] + t ))) / 
+				 (0.2*(sqrt( pow((double)(dx-i), 2) + pow((double)(dy-j), 2))+2));
+		else
+		    wave[i][j] = ( 3 * sin( 2 * PI * W * ( wt[i][j] + t ) ) );
+		if ( landscape[i][j] + wave[i][j] < 0 )
+		    landscape[i][j] += wave[i][j];
+
+	    } else {
+		landscape[i][j] -= wave[i][j];
+
+		if ( s != 0 )
+		    wave[i][j] = 2 * sin(2 * PI * W * ( wt[i][j] + t )) / 
+				 (0.2*(s + 2));
+		else
+		    wave[i][j] = 2 * sin( 2 * PI * W * ( wt[i][j] + t ) );
+		landscape[i][j] += wave[i][j];
+	    }
+	    
+	}
+    if ( mode == SmoothShaded || mode == Landscape )
+	calculateVertexNormals();
+    updateGL();
+}
+
+void GLLandscape::toggleWaveAnimation( bool state )
+{
+    if (state) {
+ 	animTimer = startTimer(20);
+	animationRunning = TRUE;
+    } else {
+	killTimer(animTimer);
+	animationRunning = FALSE;
+    }
+}
+
+void GLLandscape::showEvent( QShowEvent * )
+{
+    if (animationRunning)
+ 	animTimer = startTimer(20);	
+    cubeTimer = startTimer(50);
+}
+
+void GLLandscape::hideEvent( QHideEvent * )
+{
+    if (animationRunning)
+	killTimer(animTimer);
+    killTimer(cubeTimer);
+}
+
+void GLLandscape::initDisplayLists()
+{
+    // axisList
+    axisList = glGenLists(1);
+    glNewList(axisList, GL_COMPILE);
+    
+    glEnable(GL_LINE_SMOOTH);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glEnable(GL_DEPTH_TEST);
+    glColor3f(1.0, 0.0, 0.0);
+    glBegin(GL_LINES);
+    {
+	glColor3f(1.0, 0.0, 0.0);
+	glVertex3f(-1.0f, 0, 0); // x axis
+	glVertex3f(1.0f, 0, 0);
+
+	glVertex3f(1.0f, 0, 0);
+	glVertex3f(0.8f, 0.2f, 0);
+	glVertex3f(1.0f, 0, 0);
+	glVertex3f(0.8f, -.2f, 0);
+
+	glColor3f(0.0, 1.0, 0.0);
+	glVertex3f(0, -1.0f, 0); // y axis
+	glVertex3f(0, 1.0f, 0);
+	
+	glVertex3f(0, 1.0f, 0);
+	glVertex3f(0.2f, 0.8f, 0);
+	glVertex3f(0, 1.0f, 0);
+	glVertex3f(-0.2f, 0.8f, 0);
+	
+	glColor3f(0.5, 0.5, 1.0);
+	glVertex3f(0, 0, -1.0f); // z axis
+	glVertex3f(0, 0, 1.0f);
+
+	glVertex3f(0, 0, 1.0f);
+	glVertex3f(0, 0.2f, 0.8f);
+	glVertex3f(0, 0, 1.0f);
+	glVertex3f(0,-0.2f, 0.8f);
+    }
+    glEnd();
+    
+    glEndList();
+    
+    // cubeList
+    cubeList = glGenLists(1);
+    glNewList(cubeList, GL_COMPILE);
+
+    glEnable(GL_TEXTURE_2D);
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_CULL_FACE);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_SRC_COLOR);
+    
+    glBegin( GL_QUADS );
+    {
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 1.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 1.0, 1.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 1.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 1.0, 0.0, 0.0 );
+
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 0.0 ); glVertex3f( 0.0, 1.0, 0.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 0.0, 1.0 ); glVertex3f( 0.0, 1.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 1.0 ); glVertex3f( 0.0, 0.0, 1.0 );
+	glTexCoord2f( 1.0, 0.0 ); glVertex3f( 0.0, 0.0, 0.0 );
+    }
+    glEnd();
+    glDisable(GL_TEXTURE_2D);
+
+    glEndList();
+}
diff --git a/examples/demo/opengl/gllandscape.h b/examples/demo/opengl/gllandscape.h
new file mode 100644
index 0000000..ca87676
--- /dev/null
+++ b/examples/demo/opengl/gllandscape.h
@@ -0,0 +1,98 @@
+#ifndef GLLANDSCAPE_H
+#define GLLANDSCAPE_H
+
+#include <qgl.h>
+
+class GLLandscape : public QGLWidget
+{
+    Q_OBJECT
+
+public:
+    GLLandscape( QWidget * parent = 0, const char * name = 0 );
+    ~GLLandscape();
+    
+public slots:
+    void rotateX( int );
+    void rotateY( int );
+    void rotateZ( int );
+    void zoom( int );
+    void fractalize();
+    void resetGrid();
+    
+    void setWireframe( int );
+    void setFilled( int );
+    void setSmoothShaded( int );
+    void setLandscape( int );
+    void setGridSize( int );
+    
+    void toggleWaveAnimation( bool );
+
+signals:
+    void rotatedX( int );
+    void rotatedY( int );
+    void rotatedZ( int );
+    
+protected:
+    void paintGL();
+    void initializeGL();
+    void resizeGL( int w, int h );
+    void mousePressEvent( QMouseEvent * );
+    void mouseReleaseEvent( QMouseEvent * );
+    void mouseMoveEvent( QMouseEvent * );
+    void timerEvent( QTimerEvent * );
+    void showEvent( QShowEvent * );
+    void hideEvent( QHideEvent * );
+    
+    void drawWireframe();
+    void drawFilled();
+    void drawSmoothShaded();
+    void drawAxis();
+    void drawCube();
+    
+private:
+    enum Axis { XAxis, YAxis, ZAxis };
+    enum RenderModes { Wireframe, Filled, SmoothShaded, Landscape };
+    enum Views { DefaultView, CurrentView, AxisView };
+
+    void rotate( GLfloat deg, Axis axis );
+    void calculateVertexNormals();
+    void averageNormals();
+    void createGrid( int size );
+    void destroyGrid();
+    void initDisplayLists();
+    
+    RenderModes mode;
+    
+    typedef struct grid_normals {
+	double u[3], l[3];
+    } gridNormals;
+
+    // Structure used to store the vertex normals for the landscape
+    typedef struct avg_normals {
+	double n[3];
+    } avgNormals;
+
+    typedef struct viewMatrix {
+	GLfloat model[4][4];      // OpenGL model view matrix for the view
+	GLfloat projection[4][4]; // OpenGL projection matrix for the view
+    } viewMatrix;
+
+    double      ** landscape; // Height field data
+    double      ** wave;      // Wave data
+    double      ** wt;        // Parameterized wave data
+    gridNormals ** normals;
+    avgNormals  ** vertexNormals;
+    viewMatrix     views[3];
+    
+    QPoint  oldPos;
+    GLfloat oldX, oldY, oldZ;
+    bool initFractals;
+    int  gridSize, gridHalf;
+    bool animationRunning;
+    bool mouseButtonDown;
+    int cubeTimer, animTimer;
+    GLfloat cubeRot;
+    GLint axisList, cubeList;
+};
+
+#endif
diff --git a/examples/demo/opengl/gllandscapeviewer.ui b/examples/demo/opengl/gllandscapeviewer.ui
new file mode 100644
index 0000000..558cc35
--- /dev/null
+++ b/examples/demo/opengl/gllandscapeviewer.ui
@@ -0,0 +1,623 @@
+<!DOCTYPE UI><UI version="3.0" stdsetdef="1">
+<class>GLLandscapeViewer</class>
+<widget class="QWidget">
+    <property name="name">
+        <cstring>GLLandscapeViewer</cstring>
+    </property>
+    <property name="geometry">
+        <rect>
+            <x>0</x>
+            <y>0</y>
+            <width>731</width>
+            <height>519</height>
+        </rect>
+    </property>
+    <property name="caption">
+        <string>Qt/OpenGL example</string>
+    </property>
+    <property name="layoutMargin" stdset="0">
+    </property>
+    <grid>
+        <property name="name">
+            <cstring>unnamed</cstring>
+        </property>
+        <property name="margin">
+            <number>11</number>
+        </property>
+        <property name="spacing">
+            <number>6</number>
+        </property>
+        <widget class="QLayoutWidget" row="1" column="0">
+            <property name="name">
+                <cstring>Layout9</cstring>
+            </property>
+            <hbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>0</number>
+                </property>
+                <property name="spacing">
+                    <number>18</number>
+                </property>
+                <widget class="QLayoutWidget">
+                    <property name="name">
+                        <cstring>Layout5</cstring>
+                    </property>
+                    <vbox>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>0</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QLabel">
+                            <property name="name">
+                                <cstring>TextLabel1</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>1</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>X-rotation</string>
+                            </property>
+                        </widget>
+                        <widget class="QThumbWheel">
+                            <property name="name">
+                                <cstring>wheelX</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>5</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="minimumSize">
+                                <size>
+                                    <width>100</width>
+                                    <height>30</height>
+                                </size>
+                            </property>
+                        </widget>
+                    </vbox>
+                </widget>
+                <widget class="QLayoutWidget">
+                    <property name="name">
+                        <cstring>Layout6</cstring>
+                    </property>
+                    <vbox>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>0</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QLabel">
+                            <property name="name">
+                                <cstring>TextLabel1_2</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>1</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>Y-rotation</string>
+                            </property>
+                        </widget>
+                        <widget class="QThumbWheel">
+                            <property name="name">
+                                <cstring>wheelY</cstring>
+                            </property>
+                            <property name="minimumSize">
+                                <size>
+                                    <width>100</width>
+                                    <height>30</height>
+                                </size>
+                            </property>
+                        </widget>
+                    </vbox>
+                </widget>
+                <widget class="QLayoutWidget">
+                    <property name="name">
+                        <cstring>Layout7</cstring>
+                    </property>
+                    <vbox>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>0</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QLabel">
+                            <property name="name">
+                                <cstring>TextLabel1_3</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>1</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>Z-rotation</string>
+                            </property>
+                        </widget>
+                        <widget class="QThumbWheel">
+                            <property name="name">
+                                <cstring>wheelZ</cstring>
+                            </property>
+                            <property name="minimumSize">
+                                <size>
+                                    <width>100</width>
+                                    <height>30</height>
+                                </size>
+                            </property>
+                        </widget>
+                    </vbox>
+                </widget>
+            </hbox>
+        </widget>
+        <widget class="QLayoutWidget" row="2" column="0">
+            <property name="name">
+                <cstring>Layout15</cstring>
+            </property>
+            <hbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>0</number>
+                </property>
+                <property name="spacing">
+                    <number>6</number>
+                </property>
+                <widget class="QButtonGroup">
+                    <property name="name">
+                        <cstring>ButtonGroup2</cstring>
+                    </property>
+                    <property name="enabled">
+                        <bool>true</bool>
+                    </property>
+                    <property name="sizePolicy">
+                        <sizepolicy>
+                            <hsizetype>1</hsizetype>
+                            <vsizetype>1</vsizetype>
+                            <horstretch>0</horstretch>
+                            <verstretch>0</verstretch>
+                        </sizepolicy>
+                    </property>
+                    <property name="title">
+                        <string>Rendering mode</string>
+                    </property>
+                    <grid>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>11</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QRadioButton" row="0" column="0">
+                            <property name="name">
+                                <cstring>RadioButton1</cstring>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Wireframe</string>
+                            </property>
+                            <property name="checked">
+                                <bool>true</bool>
+                            </property>
+                        </widget>
+                        <widget class="QRadioButton" row="0" column="1">
+                            <property name="name">
+                                <cstring>RadioButton1_2</cstring>
+                            </property>
+                            <property name="text">
+                                <string>Fl&amp;at shaded</string>
+                            </property>
+                        </widget>
+                        <widget class="QRadioButton" row="0" column="2">
+                            <property name="name">
+                                <cstring>RadioButton1_3</cstring>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Smooth shaded</string>
+                            </property>
+                        </widget>
+                        <widget class="QRadioButton" row="0" column="3">
+                            <property name="name">
+                                <cstring>RadioButton1_3_2</cstring>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Landscape</string>
+                            </property>
+                        </widget>
+                    </grid>
+                </widget>
+                <widget class="QLayoutWidget">
+                    <property name="name">
+                        <cstring>Layout14</cstring>
+                    </property>
+                    <grid>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>0</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QPushButton" row="0" column="1">
+                            <property name="name">
+                                <cstring>fractalize_btn_2</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>0</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Fractalize</string>
+                            </property>
+                            <property name="autoRepeat">
+                                <bool>true</bool>
+                            </property>
+                        </widget>
+                        <widget class="QPushButton" row="0" column="2">
+                            <property name="name">
+                                <cstring>reset_btn</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>0</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Reset grid</string>
+                            </property>
+                            <property name="autoRepeat">
+                                <bool>true</bool>
+                            </property>
+                        </widget>
+                        <widget class="QPushButton" row="0" column="0">
+                            <property name="name">
+                                <cstring>animate_btn</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>0</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>&amp;Animate</string>
+                            </property>
+                            <property name="toggleButton">
+                                <bool>true</bool>
+                            </property>
+                            <property name="autoRepeat">
+                                <bool>true</bool>
+                            </property>
+                        </widget>
+                    </grid>
+                </widget>
+            </hbox>
+        </widget>
+        <widget class="QLayoutWidget" row="0" column="0">
+            <property name="name">
+                <cstring>Layout19</cstring>
+            </property>
+            <hbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>0</number>
+                </property>
+                <property name="spacing">
+                    <number>6</number>
+                </property>
+                <widget class="QLayoutWidget">
+                    <property name="name">
+                        <cstring>Layout18</cstring>
+                    </property>
+                    <vbox>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>0</number>
+                        </property>
+                        <property name="spacing">
+                            <number>6</number>
+                        </property>
+                        <widget class="QLabel">
+                            <property name="name">
+                                <cstring>TextLabel2</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>1</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>Zoom</string>
+                            </property>
+                        </widget>
+                        <widget class="QThumbWheel">
+                            <property name="name">
+                                <cstring>wheelZoom</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>0</hsizetype>
+                                    <vsizetype>7</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="minimumSize">
+                                <size>
+                                    <width>30</width>
+                                    <height>0</height>
+                                </size>
+                            </property>
+                        </widget>
+                        <widget class="QLabel">
+                            <property name="name">
+                                <cstring>TextLabel2_2</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>1</hsizetype>
+                                    <vsizetype>0</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="text">
+                                <string>Size</string>
+                            </property>
+                        </widget>
+                        <widget class="QThumbWheel">
+                            <property name="name">
+                                <cstring>wheelSize</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>0</hsizetype>
+                                    <vsizetype>7</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                            <property name="minimumSize">
+                                <size>
+                                    <width>30</width>
+                                    <height>0</height>
+                                </size>
+                            </property>
+                        </widget>
+                    </vbox>
+                </widget>
+                <widget class="QFrame">
+                    <property name="name">
+                        <cstring>Frame5</cstring>
+                    </property>
+                    <property name="frameShape">
+                        <enum>StyledPanel</enum>
+                    </property>
+                    <property name="frameShadow">
+                        <enum>Raised</enum>
+                    </property>
+                    <hbox>
+                        <property name="name">
+                            <cstring>unnamed</cstring>
+                        </property>
+                        <property name="margin">
+                            <number>1</number>
+                        </property>
+                        <property name="spacing">
+                            <number>0</number>
+                        </property>
+                        <widget class="GLLandscape">
+                            <property name="name">
+                                <cstring>landscape</cstring>
+                            </property>
+                            <property name="sizePolicy">
+                                <sizepolicy>
+                                    <hsizetype>7</hsizetype>
+                                    <vsizetype>7</vsizetype>
+                                    <horstretch>0</horstretch>
+                                    <verstretch>0</verstretch>
+                                </sizepolicy>
+                            </property>
+                        </widget>
+                    </hbox>
+                </widget>
+            </hbox>
+        </widget>
+    </grid>
+</widget>
+<customwidgets>
+    <customwidget>
+        <class>GLLandscape</class>
+        <header location="local">gllandscape.h</header>
+        <sizehint>
+            <width>100</width>
+            <height>100</height>
+        </sizehint>
+        <container>0</container>
+        <sizepolicy>
+            <hordata>3</hordata>
+            <verdata>3</verdata>
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+        </sizepolicy>
+        <pixmap>image0</pixmap>
+        <signal>rotatedX(int)</signal>
+        <slot access="public" specifier="">rotateZ(int)</slot>
+        <slot access="public" specifier="">rotateY(int)</slot>
+        <slot access="public" specifier="">rotateX(int)</slot>
+        <slot access="public" specifier="">zoom(int)</slot>
+        <slot access="public" specifier="">fractalize()</slot>
+        <slot access="public" specifier="">setWireframe(int)</slot>
+        <slot access="public" specifier="">setFilled(int)</slot>
+        <slot access="public" specifier="">setGridSize(int)</slot>
+        <slot access="public" specifier="">toggleWaveAnimation(bool)</slot>
+        <slot access="public" specifier="">setSmoothShaded(int)</slot>
+        <slot access="public" specifier="">setLandscape(int)</slot>
+        <slot access="public" specifier="">resetGrid()</slot>
+    </customwidget>
+    <customwidget>
+        <class>QThumbWheel</class>
+        <header location="local">qthumbwheel.h</header>
+        <sizehint>
+            <width>100</width>
+            <height>16</height>
+        </sizehint>
+        <container>0</container>
+        <sizepolicy>
+            <hordata>7</hordata>
+            <verdata>0</verdata>
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+        </sizepolicy>
+        <pixmap>image0</pixmap>
+        <signal>valueChanged(int)</signal>
+    </customwidget>
+</customwidgets>
+<images>
+    <image name="image0">
+        <data format="XPM.GZ" length="646">789c6dd2c10ac2300c00d07bbf2234b722ddac1741fc04c5a3201e6615f43085390f22febbb65dd6666dd821dda36996b552b0df6d4055e2d937fdcd82bd361da8f3ab6ddf87e3fa23a431e01e98cb99901a2c6c1ff78bcbf19fe372713275ed6908f441ab51300617649108624641d22a9427c21a192405241a256e08e4850311172a3b95d87159742e98ef09bda403e03271f6a5bc663e9d8214279afd05eaa048f11e242f753c27bb21ee9cef4afc00c1c26728</data>
+    </image>
+</images>
+<connections>
+    <connection>
+        <sender>RadioButton1</sender>
+        <signal>stateChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>setWireframe(int)</slot>
+    </connection>
+    <connection>
+        <sender>RadioButton1_2</sender>
+        <signal>stateChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>setFilled(int)</slot>
+    </connection>
+    <connection>
+        <sender>animate_btn</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>landscape</receiver>
+        <slot>toggleWaveAnimation(bool)</slot>
+    </connection>
+    <connection>
+        <sender>RadioButton1_3</sender>
+        <signal>stateChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>setSmoothShaded(int)</slot>
+    </connection>
+    <connection>
+        <sender>wheelY</sender>
+        <signal>valueChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>rotateY(int)</slot>
+    </connection>
+    <connection>
+        <sender>wheelZ</sender>
+        <signal>valueChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>rotateZ(int)</slot>
+    </connection>
+    <connection>
+        <sender>wheelSize</sender>
+        <signal>valueChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>setGridSize(int)</slot>
+    </connection>
+    <connection>
+        <sender>wheelZoom</sender>
+        <signal>valueChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>zoom(int)</slot>
+    </connection>
+    <connection>
+        <sender>wheelX</sender>
+        <signal>valueChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>rotateX(int)</slot>
+    </connection>
+    <connection>
+        <sender>RadioButton1_3_2</sender>
+        <signal>stateChanged(int)</signal>
+        <receiver>landscape</receiver>
+        <slot>setLandscape(int)</slot>
+    </connection>
+    <connection>
+        <sender>reset_btn</sender>
+        <signal>clicked()</signal>
+        <receiver>landscape</receiver>
+        <slot>resetGrid()</slot>
+    </connection>
+    <connection>
+        <sender>fractalize_btn_2</sender>
+        <signal>clicked()</signal>
+        <receiver>landscape</receiver>
+        <slot>fractalize()</slot>
+    </connection>
+</connections>
+<tabstops>
+    <tabstop>RadioButton1</tabstop>
+    <tabstop>RadioButton1_2</tabstop>
+    <tabstop>RadioButton1_3</tabstop>
+    <tabstop>RadioButton1_3_2</tabstop>
+    <tabstop>fractalize_btn_2</tabstop>
+    <tabstop>reset_btn</tabstop>
+    <tabstop>animate_btn</tabstop>
+</tabstops>
+<includes>
+    <include location="local" impldecl="in implementation">gllandscapeviewer.ui.h</include>
+</includes>
+<slots>
+    <slot access="protected">init()</slot>
+    <slot access="protected">destroy()</slot>
+</slots>
+<layoutdefaults spacing="6" margin="11"/>
+</UI>
diff --git a/examples/demo/opengl/gllandscapeviewer.ui.h b/examples/demo/opengl/gllandscapeviewer.ui.h
new file mode 100644
index 0000000..395519d
--- /dev/null
+++ b/examples/demo/opengl/gllandscapeviewer.ui.h
@@ -0,0 +1,37 @@
+/****************************************************************************
+** ui.h extension file, included from the uic-generated form implementation.
+**
+** If you wish to add, delete or rename slots use Qt Designer which will
+** update this file, preserving your code. Create an init() slot in place of
+** a constructor, and a destroy() slot in place of a destructor.
+*****************************************************************************/
+
+
+void GLLandscapeViewer::init()
+{
+    wheelX->setOrientation( Horizontal );
+    wheelY->setOrientation( Horizontal );
+    wheelZ->setOrientation( Horizontal );
+    
+    wheelZoom->setOrientation( Vertical );
+    wheelZoom->setRange( 0, 200 );  
+    wheelZoom->setValue( 100 );
+
+    wheelSize->setOrientation( Vertical ); 
+    wheelSize->setRange( 25, 200 );   
+    wheelSize->setValue( 50 ); 
+    wheelSize->setSteps( 10, 10 );
+   	
+    wheelX->setRange( 0, 360 ); 
+    wheelY->setRange( 0, 360 );  
+    wheelZ->setRange( 0, 360 );  
+	
+    wheelX->setTransmissionRatio( 0.5 ); 
+    wheelY->setTransmissionRatio( 0.5 );  
+    wheelZ->setTransmissionRatio( 0.5 );  
+}
+
+void GLLandscapeViewer::destroy()
+{
+
+}
diff --git a/examples/demo/opengl/gllogo.bmp b/examples/demo/opengl/gllogo.bmp
new file mode 100644
index 0000000..ee64a10
--- /dev/null
+++ b/examples/demo/opengl/gllogo.bmp
diff --git a/examples/demo/opengl/gltexobj.cpp b/examples/demo/opengl/gltexobj.cpp
new file mode 100644
index 0000000..60627da
--- /dev/null
+++ b/examples/demo/opengl/gltexobj.cpp
@@ -0,0 +1,210 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple QGLWidget demonstrating the use of QImages for textures.
+**
+** Much of the GL code is inspired by the 'spectex' and 'texcyl'
+** public domain demo programs by Brian Paul.
+**
+****************************************************************************/
+
+#include "gltexobj.h"
+#include <qimage.h>
+
+/*!
+  Create a GLTexobj widget
+*/
+
+GLTexobj::GLTexobj( QWidget* parent, const char* name, WFlags f )
+    : GLControlWidget( parent, name, 0, f ), impX( -2 ), impY( 0.5 ), impZ( 1 )
+{
+    object = 0;
+}
+
+/*!
+  Release allocated resources
+*/
+
+GLTexobj::~GLTexobj()
+{
+    makeCurrent();
+    glDeleteLists( object, 1 );
+}
+
+
+/*!
+  Paint the texobj. The actual openGL commands for drawing the texobj are
+  performed here.
+*/
+
+void GLTexobj::paintGL()
+{
+    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+    glPushMatrix();
+    transform();
+    glCallList( object );
+    drawText();
+    glPushAttrib( GL_LIGHTING_BIT | GL_TEXTURE_BIT );
+    glDisable( GL_LIGHTING );
+    glDisable( GL_TEXTURE_2D );
+    qglColor( green );
+    glLineWidth( 1.0 );
+    glBegin( GL_LINES );
+    {
+	glVertex3f( 0.0f, 0.0f, 1.0f );
+	glVertex3f( 0.98f, 0.98f, 0.98f );
+    }
+    glEnd();
+    renderText( 1.0, 1.0, 1.0, "Can", QFont( "helvetica", 12, QFont::Bold, TRUE ) );    
+    glPopAttrib();
+    glPopMatrix();
+}
+
+
+/*!
+  Set up the OpenGL rendering state, and define display list
+*/
+
+void GLTexobj::initializeGL()
+{
+    // Set up the lights
+
+    GLfloat whiteDir[4] = {2.0, 2.0, 2.0, 1.0};
+    GLfloat whiteAmb[4] = {1.0, 1.0, 1.0, 1.0};
+    GLfloat lightPos[4] = {30.0, 30.0, 30.0, 1.0};
+
+    glEnable(GL_LIGHTING);
+    glEnable(GL_LIGHT0);
+    glEnable(GL_DEPTH_TEST);
+    glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);
+    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, whiteAmb);
+
+    glMaterialfv(GL_FRONT, GL_DIFFUSE, whiteDir);
+    glMaterialfv(GL_FRONT, GL_SPECULAR, whiteDir);
+    glMaterialf(GL_FRONT, GL_SHININESS, 20.0);
+
+    glLightfv(GL_LIGHT0, GL_DIFFUSE, whiteDir);		// enable diffuse
+    glLightfv(GL_LIGHT0, GL_SPECULAR, whiteDir);	// enable specular
+    glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
+
+    // Set up the textures
+
+    QImage tex1, tex2, buf;
+
+    if ( !buf.load( "opengl/gllogo.bmp" ) ) {	// Load first image from file
+	qWarning( "Could not read image file, using single-color instead." );
+	QImage dummy( 128, 128, 32 );
+	dummy.fill( Qt::green.rgb() );
+	buf = dummy;
+    }
+    tex1 = QGLWidget::convertToGLFormat( buf );  // flipped 32bit RGBA
+
+    if ( !buf.load( "opengl/qtlogo.bmp" ) ) {	// Load first image from file
+	qWarning( "Could not read image file, using single-color instead." );
+	QImage dummy( 128, 128, 32 );
+	dummy.fill( Qt::red.rgb() );
+	buf = dummy;
+    }
+    tex2 = QGLWidget::convertToGLFormat( buf );  // flipped 32bit RGBA
+
+    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
+    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
+    glEnable( GL_TEXTURE_2D );
+
+    // Set up various other stuff
+
+    glClearColor( 0.0, 0.0, 0.0, 0.0 ); // Let OpenGL clear to black
+    glEnable( GL_CULL_FACE );  	// don't need Z testing for convex objects
+    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
+
+    // Make the object display list
+
+    object = makeObject( tex1, tex2 );	// Generate an OpenGL display list
+}
+
+
+
+/*!
+  Set up the OpenGL view port, matrix mode, etc.
+*/
+
+void GLTexobj::resizeGL( int w, int h )
+{
+    glViewport( 0, 0, w, h );
+    glMatrixMode( GL_PROJECTION );
+    glLoadIdentity();
+    glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 );
+    glMatrixMode( GL_MODELVIEW );
+    glLoadIdentity();
+    glTranslatef( 0.0, 0.0, -70.0 );
+}
+
+
+/*!
+  Generate an OpenGL display list for the object to be shown, i.e. the texobj
+*/
+
+GLuint GLTexobj::makeObject( const QImage& tex1, const QImage& tex2 )
+{
+    GLUquadricObj* q = gluNewQuadric();
+    GLuint cylinderObj = glGenLists(1);
+    glNewList( cylinderObj, GL_COMPILE );
+
+    glTranslatef( 0.0, 0.0, -1.0 );
+
+    // cylinder
+    glTexImage2D( GL_TEXTURE_2D, 0, 3, tex1.width(), tex1.height(), 0,
+		  GL_RGBA, GL_UNSIGNED_BYTE, tex1.bits() );
+    gluQuadricTexture( q, GL_TRUE );
+    gluCylinder(q, 0.6, 0.6, 2.0, 24, 1);
+
+    // end cap
+    glTexImage2D( GL_TEXTURE_2D, 0, 3, tex2.width(), tex2.height(), 0,
+		  GL_RGBA, GL_UNSIGNED_BYTE, tex2.bits() );
+    glTranslatef( 0.0, 0.0, 2.0 );
+    gluDisk( q, 0.0, 0.6, 24, 1 );
+
+    // other end cap
+    glTranslatef( 0.0, 0.0, -2.0 );
+    gluQuadricOrientation( q, (GLenum)GLU_INSIDE );
+    gluDisk( q, 0.0, 0.6, 24, 1 );
+
+    glEndList();
+    gluDeleteQuadric( q );
+
+    return cylinderObj;
+}
+
+void GLTexobj::animate()
+{
+    xRot += impX;
+    yRot += impY;
+    zRot -= impZ;
+
+    impX -= impX * 0.05;
+    impY -= impY * 0.05;
+    impZ -= impZ * 0.05;
+
+    if ( impX > 0.1 || impY > 0.1 || impZ > 0.1 || 
+	 impX < -0.1 || impY < -0.1 || impZ < -0.1 )
+	updateGL();
+}
+
+void GLTexobj::setRotationImpulse( double x, double y, double z )
+{
+    if ( animation ) {
+	impX += 180*x;
+	impY += 180*y;
+	impZ += 180*z;
+    } else {
+	GLControlWidget::setRotationImpulse( x, y, z );
+    }
+}
diff --git a/examples/demo/opengl/gltexobj.h b/examples/demo/opengl/gltexobj.h
new file mode 100644
index 0000000..e621627
--- /dev/null
+++ b/examples/demo/opengl/gltexobj.h
@@ -0,0 +1,44 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for Qt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+/****************************************************************************
+**
+** This is a simple QGLWidget displaying an openGL wireframe box
+**
+****************************************************************************/
+
+#ifndef GLTEXOBJ_H
+#define GLTEXOBJ_H
+
+#include "glcontrolwidget.h"
+
+class GLTexobj : public GLControlWidget
+{
+    Q_OBJECT
+
+public:
+    GLTexobj( QWidget* parent, const char* name = 0, WFlags f = 0 );
+    ~GLTexobj();
+
+protected:
+    void		animate();
+    void		initializeGL();
+    void		paintGL();
+    void		resizeGL( int w, int h );
+
+    virtual GLuint 	makeObject( const QImage& tex1, const QImage& tex2 );
+
+    void		setRotationImpulse( double x, double y, double z );
+
+private:
+    GLuint object;
+    double impX, impY, impZ;
+};
+
+#endif // GLTEXOBJ_H
diff --git a/examples/demo/opengl/glworkspace.cpp b/examples/demo/opengl/glworkspace.cpp
new file mode 100644
index 0000000..4670582
--- /dev/null
+++ b/examples/demo/opengl/glworkspace.cpp
@@ -0,0 +1,212 @@
+#include "glworkspace.h"
+#include "glbox.h"
+#include "glgear.h"
+#include "gltexobj.h"
+
+#include <qworkspace.h>
+#include <qdialog.h>
+#include <qtoolbar.h>
+#include <qpopupmenu.h>
+#include <qmenubar.h>
+#include <qaction.h>
+#include <qprinter.h>
+#include <qpainter.h>
+#include <qcheckbox.h>
+#include <qvbox.h>
+#include <qimage.h>
+#include "printpreview.h"
+
+
+GLWorkspace::GLWorkspace( QWidget *parent, const char *name, WFlags f )
+: QMainWindow( parent, name, f ), printer( 0 )
+{
+    setupSceneActions();
+
+    QVBox *vbox = new QVBox( this );
+    vbox->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
+    vbox->setMargin( 1 );
+    vbox->setLineWidth( 1 );
+
+    workspace = new QWorkspace( vbox );
+    workspace->setBackgroundMode( PaletteMid );
+    setCentralWidget( vbox );
+}
+
+GLWorkspace::~GLWorkspace()
+{
+}
+
+void GLWorkspace::setupSceneActions()
+{
+    QToolBar *tb = new QToolBar( "Scene", this );
+    QPopupMenu *menu = new QPopupMenu( this );
+    menuBar()->insertItem( tr( "&Scene" ), menu );
+
+    QAction *a;
+    QActionGroup *newGroup = new QActionGroup( this );
+    newGroup->setMenuText( tr( "&New" ) );
+    newGroup->setText( tr( "New" ) );
+    newGroup->setUsesDropDown( TRUE );
+    newGroup->setExclusive( FALSE );
+    newGroup->setIconSet( QPixmap( "textdrawing/filenew.png" ) );
+    a = new QAction( tr( "Wirebox" ), QPixmap( "opengl/wirebox.xpm" ), tr( "&Wirebox" ), 0, newGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( newWirebox() ) );
+    a = new QAction( tr( "Gear" ), QPixmap( "opengl/gear.xpm" ), tr( "&Gears" ), 0, newGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( newGear() ) );
+    a = new QAction( tr( "Texture" ), QPixmap( "opengl/texture.xpm" ), tr( "&Texture" ), 0, newGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( newTexture() ) );
+/*    a = new QAction( tr( "Nurbs" ), QPixmap( "opengl/nurbs.xpm" ), tr( "&Nurbs" ), 0, newGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( newNurbs() ) );*/
+    newGroup->addTo( tb );
+    newGroup->addTo( menu );
+
+    menu->insertSeparator();
+    QActionGroup *printGroup = new QActionGroup( this );
+    printGroup->setMenuText( tr( "&Print" ) );
+    printGroup->setText( tr( "Print" ) );
+    printGroup->setUsesDropDown( TRUE );
+    printGroup->setExclusive( FALSE );
+    printGroup->setIconSet( QPixmap( "textdrawing/print.png" ) );
+    QAction *da = new QAction( tr( "Window Size" ), QPixmap( "textdrawing/print.png" ), tr( "&Window Size" ), CTRL + Key_P, printGroup );
+    connect( da, SIGNAL( activated() ), this, SLOT( filePrintWindowRes() ) );
+    a = new QAction( tr( "Low Resolution" ), tr( "&Low Resolution" ), 0, printGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( filePrintLowRes() ) );
+    a = new QAction( tr( "Medium Resolution" ), tr( "&Medium Resolution" ), 0, printGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( filePrintMedRes() ) );
+    a = new QAction( tr( "High Resolution" ), tr( "&High Resolution" ), 0, printGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( filePrintHighRes() ) );
+    printGroup->addSeparator();
+    a = new QAction( tr( "Setup" ), tr( "&Setup..." ), 0, printGroup );
+    connect( a, SIGNAL( activated() ), this, SLOT( filePrintSetup() ) );
+    da->addTo( tb );
+    printGroup->addTo( menu );
+
+    a = new QAction( tr( "Close" ), QPixmap(), tr( "&Close" ), 0, this );
+    connect( a, SIGNAL( activated() ), this, SLOT( fileClose() ) );
+    a->addTo( menu );
+}
+
+void GLWorkspace::newWirebox()
+{
+    GLBox *gl = new GLBox( workspace, 0, WDestructiveClose );
+    gl->setIcon( QPixmap( "opengl/wirebox.xpm" ) );
+    gl->setCaption( tr( "Wirebox" ) );
+    gl->resize( 320, 240 );
+    gl->show();
+}
+
+void GLWorkspace::newGear()
+{
+    GLGear *gl = new GLGear( workspace, 0, WDestructiveClose );
+    gl->setIcon( QPixmap( "opengl/gear.xpm" ) );
+    gl->setCaption( tr( "Gear" ) );
+    gl->resize( 320, 240 );
+    gl->show();
+}
+
+void GLWorkspace::newTexture()
+{
+    GLTexobj *gl = new GLTexobj( workspace, 0, WDestructiveClose );
+    gl->setIcon( QPixmap( "opengl/texture.xpm" ) );
+    gl->setCaption( tr( "Texture" ) );
+    gl->resize( 320, 240 );
+    gl->show();
+}
+
+void GLWorkspace::newNurbs()
+{
+    GLGear *gl = new GLGear ( workspace, 0, WDestructiveClose );
+    gl->setIcon( QPixmap( "opengl/nurbs.xpm" ) );
+    gl->setCaption( tr( "Nurbs" ) );
+    gl->resize( 320, 240 );
+    gl->show();
+}
+
+void GLWorkspace::filePrint( int x, int y )
+{
+    bool print = printer || filePrintSetup();
+    if ( !print || !printer )
+	return;
+
+    QWidget *widget = workspace->activeWindow();
+    if ( !widget || !widget->inherits( "QGLWidget" ) )
+	return;
+    QGLWidget *gl = (QGLWidget *)widget;
+    QPixmap pm = gl->renderPixmap( x, y );
+
+    PrintPreview view( this );
+    QImage temp = pm.convertToImage();
+    temp = temp.smoothScale( 400, 300 );
+    QPixmap temppix;
+    temppix.convertFromImage( temp );
+    view.setPixmap( temppix );
+    view.setIcon( QPixmap( "opengl/snapshot.xpm" ) );
+    view.setCaption( gl->caption() + " - Print preview" );
+    if ( view.exec() ) {
+	QImage img = pm.convertToImage();
+	if ( view.checkInvert->isChecked() ) {
+	    img.invertPixels();
+	}
+	if ( view.checkMirror->isChecked() ) {
+	    img = img.mirror( TRUE, FALSE );
+	}
+	if ( view.checkFlip->isChecked() ) {
+	    img = img.mirror( FALSE, TRUE );
+	}
+	if ( view.checkLeft->isEnabled() && view.checkLeft->isChecked() ) {
+	}
+	if ( view.checkRight->isEnabled() && view.checkRight->isChecked() ) {
+	}
+	pm.convertFromImage( img );
+
+	QPainter painter;
+	if ( !painter.begin( printer ) )
+	    return;
+
+	painter.drawPixmap( QPoint( 0, 0 ), pm );
+
+	painter.end();
+    }
+}
+
+void GLWorkspace::filePrintWindowRes()
+{
+    filePrint( 0, 0 );
+}
+
+void GLWorkspace::filePrintLowRes()
+{
+    filePrint( 640, 480 );
+}
+
+void GLWorkspace::filePrintMedRes()
+{
+    filePrint( 1024, 768 );
+}
+
+void GLWorkspace::filePrintHighRes()
+{
+    filePrint( 2048, 1536 );
+}
+
+bool GLWorkspace::filePrintSetup()
+{
+    bool newPrinter = !printer;
+
+    if ( !printer )
+	printer = new QPrinter;
+    if ( printer->setup() ) {
+	return TRUE;
+    } else {
+	if ( newPrinter ) {
+	    delete printer;
+	    printer = 0;
+	}
+	return FALSE;
+    }
+}
+
+void GLWorkspace::fileClose()
+{
+    workspace->closeActiveWindow();
+}
diff --git a/examples/demo/opengl/glworkspace.h b/examples/demo/opengl/glworkspace.h
new file mode 100644
index 0000000..36e1a23
--- /dev/null
+++ b/examples/demo/opengl/glworkspace.h
@@ -0,0 +1,37 @@
+#ifndef GLWORKSPACE_H
+#define GLWORKSPACE_H
+
+#include <qmainwindow.h>
+
+class QWorkspace;
+class QPrinter;
+
+class GLWorkspace : public QMainWindow
+{
+    Q_OBJECT
+public:
+    GLWorkspace( QWidget *parent = 0, const char *name = 0, WFlags f = 0 );
+    ~GLWorkspace();
+
+protected:
+    void setupSceneActions();
+
+protected slots:
+    void newWirebox();
+    void newGear();
+    void newTexture();
+    void newNurbs();
+    void filePrint( int x, int y );
+    void filePrintWindowRes();
+    void filePrintLowRes();
+    void filePrintMedRes();
+    void filePrintHighRes();
+    bool filePrintSetup();
+    void fileClose();
+
+private:
+    QWorkspace *workspace;
+    QPrinter *printer;
+};
+
+#endif //GLWORKSPACE_H
diff --git a/examples/demo/opengl/nurbs.xpm b/examples/demo/opengl/nurbs.xpm
new file mode 100644
index 0000000..946d081
--- /dev/null
+++ b/examples/demo/opengl/nurbs.xpm
@@ -0,0 +1,305 @@
+/* XPM */
+static char *nest[] = {
+/* width height num_colors chars_per_pixel */
+"    48    48      202            2",
+/* colors */
+".. c None",
+".# c #1f1000",
+".a c #200800",
+".b c #201000",
+".c c #201700",
+".d c #20170f",
+".e c #201800",
+".f c #201f0f",
+".g c #2f1f00",
+".h c #2f2710",
+".i c #301700",
+".j c #301f00",
+".k c #30200f",
+".l c #302810",
+".m c #3f2000",
+".n c #3f270f",
+".o c #3f2f10",
+".p c #402700",
+".q c #40270f",
+".r c #402f0f",
+".s c #402f10",
+".t c #40371f",
+".u c #403720",
+".v c #40382f",
+".w c #4f3000",
+".x c #4f3010",
+".y c #4f371f",
+".z c #4f3f1f",
+".A c #4f3f3f",
+".B c #4f402f",
+".C c #4f403f",
+".D c #503700",
+".E c #50370f",
+".F c #503f10",
+".G c #50401f",
+".H c #504020",
+".I c #504030",
+".J c #50403f",
+".K c #504730",
+".L c #50473f",
+".M c #5f3f10",
+".N c #5f4000",
+".O c #5f401f",
+".P c #5f471f",
+".Q c #5f481f",
+".R c #5f482f",
+".S c #5f5030",
+".T c #5f5040",
+".U c #5f5750",
+".V c #604010",
+".W c #60481f",
+".X c #604830",
+".Y c #604f20",
+".Z c #604f3f",
+".0 c #605730",
+".1 c #60584f",
+".2 c #6f4000",
+".3 c #6f4810",
+".4 c #6f5730",
+".5 c #6f5740",
+".6 c #6f5f30",
+".7 c #6f5f3f",
+".8 c #6f6040",
+".9 c #6f6850",
+"#. c #704f10",
+"## c #70501f",
+"#a c #705020",
+"#b c #705710",
+"#c c #70581f",
+"#d c #705830",
+"#e c #705f2f",
+"#f c #705f3f",
+"#g c #705f4f",
+"#h c #705f50",
+"#i c #70683f",
+"#j c #706840",
+"#k c #70706f",
+"#l c #7f5000",
+"#m c #7f5f2f",
+"#n c #7f6030",
+"#o c #7f673f",
+"#p c #7f6840",
+"#q c #7f685f",
+"#r c #805820",
+"#s c #805f10",
+"#t c #80602f",
+"#u c #80673f",
+"#v c #80684f",
+"#w c #806f40",
+"#x c #806f50",
+"#y c #806f5f",
+"#z c #80704f",
+"#A c #80786f",
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+"#F c #8f7040",
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+"#H c #906010",
+"#I c #906720",
+"#J c #90682f",
+"#K c #906f3f",
+"#L c #90702f",
+"#M c #907060",
+"#N c #90773f",
+"#O c #907840",
+"#P c #90786f",
+"#Q c #907f6f",
+"#R c #908050",
+"#S c #90875f",
+"#T c #90886f",
+"#U c #908f70",
+"#V c #909080",
+"#W c #9f701f",
+"#X c #9f702f",
+"#Y c #9f7840",
+"#Z c #9f804f",
+"#0 c #9f8050",
+"#1 c #a0680f",
+"#2 c #a0783f",
+"#3 c #a0804f",
+"#4 c #a0806f",
+"#5 c #a0874f",
+"#6 c #a0875f",
+"#7 c #a08f50",
+"#8 c #a08f5f",
+"#9 c #a0906f",
+"a. c #a09770",
+"a# c #a0977f",
+"aa c #af701f",
+"ab c #af782f",
+"ac c #af7f3f",
+"ad c #af803f",
+"ae c #af876f",
+"af c #af884f",
+"ag c #af8f5f",
+"ah c #af8f6f",
+"ai c #af8f7f",
+"aj c #af9070",
+"ak c #af907f",
+"al c #af9880",
+"am c #af9f70",
+"an c #afa080",
+"ao c #b06f0f",
+"ap c #b0802f",
+"aq c #b0904f",
+"ar c #b0975f",
+"as c #b09780",
+"at c #b0a06f",
+"au c #b0a890",
+"av c #bf8f3f",
+"aw c #bf907f",
+"ax c #bf974f",
+"ay c #bf977f",
+"az c #bf985f",
+"aA c #bf9860",
+"aB c #bf9f6f",
+"aC c #bfa080",
+"aD c #bfa870",
+"aE c #bfa880",
+"aF c #bfa890",
+"aG c #c09750",
+"aH c #c09f80",
+"aI c #c0a760",
+"aJ c #c0a76f",
+"aK c #c0b080",
+"aL c #c0b790",
+"aM c #cf9740",
+"aN c #cfa78f",
+"aO c #cfa87f",
+"aP c #cfaf6f",
+"aQ c #cfaf90",
+"aR c #d09f80",
+"aS c #d0a860",
+"aT c #d0b770",
+"aU c #d0b88f",
+"aV c #d0b890",
+"aW c #dfa750",
+"aX c #dfaf90",
+"aY c #dfb79f",
+"aZ c #dfb8a0",
+"a0 c #dfc08f",
+"a1 c #e0a780",
+"a2 c #e0b790",
+"a3 c #e0b79f",
+"a4 c #e0b870",
+"a5 c #e0bfa0",
+"a6 c #e0c8a0",
+"a7 c #e0cf9f",
+"a8 c #efb090",
+"a9 c #efbf90",
+"b. c #efd7af",
+"b# c #f0bf9f",
+"ba c #f0c0a0",
+"bb c #f0cfb0",
+"bc c #ffc8af",
+"bd c #ffd7b0",
+"be c #ffd7bf",
+"bf c #ffd8bf",
+"bg c #ffdfc0",
+"bh c #ffe7c0",
+/* pixels */
+"............................#8#8#9.Y..........#8#8#2#2..........................................",
+"..........................au#3#3a.aD#T#8aIa.#8........#8..#8#8..................................",
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+"................aA#8#2#T#7.X.7.7.0.0.6ag#o#R#f.r.0#n#p.#.c.#.c.#.#.c.c.#.c#G#R#S#i#0............",
+"..................aL#8#Zaq#8.0.#.4#n.t.c.##waJ#0.G.z.R.r.o.f.d.c.e.#.4.0#o#8#F.#.o........#U....",
+"......................#8#8#DaDaD.T.h.t#8#z.h#Z.0.R.g.m#G#n.l.h.c.##z.0.##G#j.#.UaS#3#8#T#q......",
+"....................aE......#8aK#N#R#6.O.#.B#0#6#o.7#G.u.d.#.c.c.#.#.h#v#v#j#z#8#S#T#UaD........",
+"......................#Z....#NaL#8#jam#B.6#w.7#i.u#7araT#z#z#p#iaTaPat#p#R.#a....Y..............",
+"..........................#R..aEaja#.1#7#A#0.6.c.c.S#6.f.#.d#R.#.e.c.#.7#T......................",
+"................................#F#8#6........#o#o.c.c#K#n#u.o.Y#v#R#k..aI..a.a.................",
+"..............................#9#9....an#Z............#8#0..#0#RaE....#U#Sa....................."
+};
+SIMPLE  =                    T                                                  
+BITPIX  =                    8                                                  
+NAXIS   =                    2                                                  
+NAXIS1  =                   48                                                  
+NAXIS2  =                   48                                                  
+HISTORY Written by XV 3.10                                                      
+END                                                                             
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
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+                                                                                
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diff --git a/examples/demo/opengl/printpreview.ui b/examples/demo/opengl/printpreview.ui
new file mode 100644
index 0000000..559f0cf
--- /dev/null
+++ b/examples/demo/opengl/printpreview.ui
@@ -0,0 +1,277 @@
+<!DOCTYPE UI><UI version="3.0" stdsetdef="1">
+<class>PrintPreview</class>
+<widget class="QDialog">
+    <property name="name">
+        <cstring>PrintPreview</cstring>
+    </property>
+    <property name="geometry">
+        <rect>
+            <x>0</x>
+            <y>0</y>
+            <width>634</width>
+            <height>195</height>
+        </rect>
+    </property>
+    <property name="caption">
+        <string>Print Preview</string>
+    </property>
+    <property name="sizeGripEnabled">
+        <bool>true</bool>
+    </property>
+    <grid>
+        <property name="name">
+            <cstring>unnamed</cstring>
+        </property>
+        <property name="margin">
+            <number>11</number>
+        </property>
+        <property name="spacing">
+            <number>6</number>
+        </property>
+        <widget class="QGroupBox" row="0" column="0">
+            <property name="name">
+                <cstring>GroupBox1</cstring>
+            </property>
+            <property name="sizePolicy">
+                <sizepolicy>
+                    <hsizetype>7</hsizetype>
+                    <vsizetype>7</vsizetype>
+                    <horstretch>0</horstretch>
+                    <verstretch>0</verstretch>
+                </sizepolicy>
+            </property>
+            <property name="title">
+                <string>Preview</string>
+            </property>
+            <hbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>11</number>
+                </property>
+                <property name="spacing">
+                    <number>6</number>
+                </property>
+                <widget class="QLabel">
+                    <property name="name">
+                        <cstring>pixmapLabel</cstring>
+                    </property>
+                    <property name="text">
+                        <string>TextLabel1</string>
+                    </property>
+                </widget>
+            </hbox>
+        </widget>
+        <widget class="QGroupBox" row="0" column="1">
+            <property name="name">
+                <cstring>GroupBox2</cstring>
+            </property>
+            <property name="sizePolicy">
+                <sizepolicy>
+                    <hsizetype>4</hsizetype>
+                    <vsizetype>7</vsizetype>
+                    <horstretch>0</horstretch>
+                    <verstretch>0</verstretch>
+                </sizepolicy>
+            </property>
+            <property name="title">
+                <string>Modify</string>
+            </property>
+            <vbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>11</number>
+                </property>
+                <property name="spacing">
+                    <number>6</number>
+                </property>
+                <widget class="QCheckBox">
+                    <property name="name">
+                        <cstring>checkInvert</cstring>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Invert Colors</string>
+                    </property>
+                </widget>
+                <widget class="QCheckBox">
+                    <property name="name">
+                        <cstring>checkMirror</cstring>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Mirror</string>
+                    </property>
+                </widget>
+                <widget class="QCheckBox">
+                    <property name="name">
+                        <cstring>checkFlip</cstring>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Flip</string>
+                    </property>
+                </widget>
+                <widget class="QCheckBox">
+                    <property name="name">
+                        <cstring>checkLeft</cstring>
+                    </property>
+                    <property name="text">
+                        <string>Rotate 90° &amp;left</string>
+                    </property>
+                </widget>
+                <widget class="QCheckBox">
+                    <property name="name">
+                        <cstring>checkRight</cstring>
+                    </property>
+                    <property name="text">
+                        <string>Rotate 90° &amp;right</string>
+                    </property>
+                </widget>
+            </vbox>
+        </widget>
+        <widget class="QLayoutWidget" row="1" column="0" rowspan="1" colspan="2">
+            <property name="name">
+                <cstring>Layout1</cstring>
+            </property>
+            <hbox>
+                <property name="name">
+                    <cstring>unnamed</cstring>
+                </property>
+                <property name="margin">
+                    <number>0</number>
+                </property>
+                <property name="spacing">
+                    <number>6</number>
+                </property>
+                <widget class="QPushButton">
+                    <property name="name">
+                        <cstring>buttonHelp</cstring>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Help</string>
+                    </property>
+                    <property name="autoDefault">
+                        <bool>true</bool>
+                    </property>
+                </widget>
+                <spacer>
+                    <property name="name">
+                        <cstring>Horizontal Spacing2</cstring>
+                    </property>
+                    <property name="orientation">
+                        <enum>Horizontal</enum>
+                    </property>
+                    <property name="sizeType">
+                        <enum>Expanding</enum>
+                    </property>
+                </spacer>
+                <widget class="QPushButton">
+                    <property name="name">
+                        <cstring>buttonOk</cstring>
+                    </property>
+                    <property name="caption">
+                        <string></string>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Print</string>
+                    </property>
+                    <property name="autoDefault">
+                        <bool>true</bool>
+                    </property>
+                    <property name="default">
+                        <bool>true</bool>
+                    </property>
+                </widget>
+                <widget class="QPushButton">
+                    <property name="name">
+                        <cstring>buttonCancel</cstring>
+                    </property>
+                    <property name="text">
+                        <string>&amp;Discard</string>
+                    </property>
+                    <property name="autoDefault">
+                        <bool>true</bool>
+                    </property>
+                </widget>
+            </hbox>
+        </widget>
+    </grid>
+</widget>
+<connections>
+    <connection>
+        <sender>buttonOk</sender>
+        <signal>clicked()</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>accept()</slot>
+    </connection>
+    <connection>
+        <sender>buttonCancel</sender>
+        <signal>clicked()</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>reject()</slot>
+    </connection>
+    <connection>
+        <sender>checkLeft</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>checkRight</receiver>
+        <slot>setDisabled(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkRight</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>checkLeft</receiver>
+        <slot>setDisabled(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkInvert</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>invertColors(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkMirror</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>mirror(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkFlip</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>flip(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkLeft</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>rotateLeft(bool)</slot>
+    </connection>
+    <connection>
+        <sender>checkRight</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>PrintPreview</receiver>
+        <slot>rotateRight(bool)</slot>
+    </connection>
+</connections>
+<includes>
+    <include location="global" impldecl="in declaration">qimage.h</include>
+    <include location="global" impldecl="in declaration">qpixmap.h</include>
+    <include location="local" impldecl="in implementation">printpreview.ui.h</include>
+</includes>
+<variables>
+    <variable>QPixmap pix</variable>
+</variables>
+<slots>
+    <slot access="protected">init()</slot>
+    <slot access="protected">destroy()</slot>
+    <slot>updatePreview()</slot>
+    <slot>flip( bool )</slot>
+    <slot>invertColors( bool )</slot>
+    <slot>mirror( bool )</slot>
+    <slot>rotateLeft( bool )</slot>
+    <slot>rotateRight( bool )</slot>
+    <slot>setPixmap( const QPixmap &amp; pm )</slot>
+</slots>
+<layoutdefaults spacing="6" margin="11"/>
+</UI>
diff --git a/examples/demo/opengl/printpreview.ui.h b/examples/demo/opengl/printpreview.ui.h
new file mode 100644
index 0000000..db5dbfb
--- /dev/null
+++ b/examples/demo/opengl/printpreview.ui.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+** ui.h extension file, included from the uic-generated form implementation.
+**
+** If you wish to add, delete or rename functions respectively slots use
+** Qt Designer which will update this file, preserving your code. Create an
+** init() function in place of a constructor, and a destroy() function in
+** place of a destructor.
+*****************************************************************************/
+
+void PrintPreview::init()
+{
+
+}
+
+void PrintPreview::destroy()
+{
+
+}
+
+void PrintPreview::updatePreview()
+{
+    QImage img = pix.convertToImage();
+    if ( checkInvert->isChecked() ) {
+	img.invertPixels();
+    }
+    if ( checkMirror->isChecked() ) {
+	img = img.mirror( TRUE, FALSE );
+    }
+    if ( checkFlip->isChecked() ) {
+	img = img.mirror( FALSE, TRUE );
+    }
+    if ( checkLeft->isEnabled() && checkLeft->isChecked() ) {
+    }
+    if ( checkRight->isEnabled() && checkRight->isChecked() ) {
+    }
+    QPixmap pm;
+    pm.convertFromImage( img );
+    pixmapLabel->setPixmap( pm );
+}
+
+void PrintPreview::flip( bool )
+{
+    updatePreview();
+}
+
+void PrintPreview::invertColors( bool )
+{
+    updatePreview();
+}
+
+void PrintPreview::mirror( bool )
+{
+    updatePreview();   
+}
+
+void PrintPreview::rotateLeft( bool )
+{
+    updatePreview();
+}
+
+void PrintPreview::rotateRight( bool )
+{
+    updatePreview();
+}
+
+void PrintPreview::setPixmap( const QPixmap & pm )
+{
+    pix = pm;
+    updatePreview();
+}
diff --git a/examples/demo/opengl/qtlogo.bmp b/examples/demo/opengl/qtlogo.bmp
new file mode 100644
index 0000000..b7f9215
--- /dev/null
+++ b/examples/demo/opengl/qtlogo.bmp
diff --git a/examples/demo/opengl/qtlogo.png b/examples/demo/opengl/qtlogo.png
new file mode 100644
index 0000000..e6e3bee
--- /dev/null
+++ b/examples/demo/opengl/qtlogo.png
diff --git a/examples/demo/opengl/snapshot.xpm b/examples/demo/opengl/snapshot.xpm
new file mode 100644
index 0000000..1c7180c
--- /dev/null
+++ b/examples/demo/opengl/snapshot.xpm
@@ -0,0 +1,238 @@
+/* XPM */
+static char *camera[] = {
+/* width height num_colors chars_per_pixel */
+"    32    32      151            2",
+/* colors */
+".. c None",
+".# c #1f1f1f",
+".a c #202020",
+".b c #2f2720",
+".c c #302020",
+".d c #302820",
+".e c #3f2720",
+".f c #3f2820",
+".g c #3f2f2f",
+".h c #3f3730",
+".i c #402820",
+".j c #402f20",
+".k c #403730",
+".l c #4f2820",
+".m c #4f302f",
+".n c #4f403f",
+".o c #4f484f",
+".p c #50302f",
+".q c #50403f",
+".r c #5f2f20",
+".s c #5f3020",
+".t c #5f3830",
+".u c #5f4f30",
+".v c #5f4f50",
+".w c #5f5760",
+".x c #60372f",
+".y c #60382f",
+".z c #60482f",
+".A c #604f40",
+".B c #60504f",
+".C c #60606f",
+".D c #6f4030",
+".E c #6f4730",
+".F c #6f676f",
+".G c #6f7790",
+".H c #70402f",
+".I c #704030",
+".J c #704830",
+".K c #704f3f",
+".L c #705f50",
+".M c #706860",
+".N c #707780",
+".O c #7f6850",
+".P c #7f706f",
+".Q c #804f2f",
+".R c #80573f",
+".S c #805f40",
+".T c #806740",
+".U c #807060",
+".V c #807f80",
+".W c #80808f",
+".X c #8090b0",
+".Y c #80a0d0",
+".Z c #8f5730",
+".0 c #8f5840",
+".1 c #8f7f7f",
+".2 c #8f8f90",
+".3 c #905f40",
+".4 c #906740",
+".5 c #90684f",
+".6 c #907f6f",
+".7 c #908780",
+".8 c #908f8f",
+".9 c #9097a0",
+"#. c #909fb0",
+"## c #90a7cf",
+"#a c #9f5f30",
+"#b c #9f684f",
+"#c c #9f7750",
+"#d c #9f887f",
+"#e c #9f8f80",
+"#f c #9f9790",
+"#g c #9f98a0",
+"#h c #9fa0af",
+"#i c #9fafd0",
+"#j c #9fafdf",
+"#k c #a06f4f",
+"#l c #a0703f",
+"#m c #a07f5f",
+"#n c #a0906f",
+"#o c #a09780",
+"#p c #a09890",
+"#q c #a09f9f",
+"#r c #a0b0c0",
+"#s c #a0b7e0",
+"#t c #af7850",
+"#u c #af875f",
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+"#w c #af9fa0",
+"#x c #afa09f",
+"#y c #afa0a0",
+"#z c #afa7af",
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+"#B c #afa8b0",
+"#C c #afafcf",
+"#D c #afb7d0",
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+"#F c #b07f5f",
+"#G c #b0a08f",
+"#H c #b0a79f",
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+"#K c #b0b0b0",
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+"#M c #bf875f",
+"#N c #bfa89f",
+"#O c #bfaf9f",
+"#P c #bfb0a0",
+"#Q c #bfb0af",
+"#R c #bfb7b0",
+"#S c #bfb8bf",
+"#T c #c0b09f",
+"#U c #c0b7af",
+"#V c #c0b8af",
+"#W c #c0b8bf",
+"#X c #c0bfb0",
+"#Y c #c0c0bf",
+"#Z c #c0d0df",
+"#0 c #cf9f6f",
+"#1 c #cfc0b0",
+"#2 c #cfc0c0",
+"#3 c #cfd7f0",
+"#4 c #d0bfa0",
+"#5 c #d0c8c0",
+"#6 c #d0cfc0",
+"#7 c #d0cfd0",
+"#8 c #d0d7a0",
+"#9 c #dfcfbf",
+"a. c #dfd7cf",
+"a# c #dfd7df",
+"aa c #dfd8df",
+"ab c #dfe0bf",
+"ac c #dfe7ff",
+"ad c #e0d7af",
+"ae c #e0d7d0",
+"af c #e0d8df",
+"ag c #e0e0e0",
+"ah c #efe0e0",
+"ai c #efe7e0",
+"aj c #efe7ef",
+"ak c #efe88f",
+"al c #efe8f0",
+"am c #eff0a0",
+"an c #f0e0c0",
+"ao c #f0e7e0",
+"ap c #f0e8e0",
+"aq c #f0f0ef",
+"ar c #f0f0ff",
+"as c #f0f8ff",
+"at c #fff7ff",
+"au c #fff8f0",
+/* pixels */
+"............................................#o#N#N#v#P..........",
+"........................................#H#U#H#N#U#5ae#Y#H......",
+"......................................#H#v#e#N#U#1aeaeahah#H....",
+"....................................#H#v.1#d#O#Y#5aeahapaqaa#H..",
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+"..................................#1#y.V.7#q#I#S#Ya#agajalalah#O",
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+".......p.l.j.n#d#K#R#R#S#K#K#S#p#Pauauauau#D#8amac#L.Y##auauaual",
+".....p.j.e.p.i.q#d#A#I#W#W#Q#S#S#Pauauauau#D#Zacac#L#j#sauauauag",
+"...m.p.m.f.e.i.l.S#Raaaaagalatal#Xauauatah#K#L#3ac#3#j#3auauau#6",
+"...l.m.m.e.i.y#b.Laiauauauauauau#Pauauahafaf#7#r#r#i#Dauauauauae",
+"...e.f.j.b.e#b.R.haaauauauauauau#Hahaoaf#5#6#7#K#h#Ba#ajauauag#H",
+".D.D.l.b.a.f#M.h.#aaauauauauauau.P#5aeae#1#Y#6#w.2.9#g#z#7#7ae..",
+".p.s.s.b.a.f#F.t.baiaualagahalag.E#dae#1#P#J#Y#y.F.C.N.W.2#f#H..",
+".e.p.p.a.a.f#E.D.calau.F.#.u#n#2.K.f#4#X#x.8#y#A.F.o.w.C.7#H....",
+".t.x.f.a.a.e#E.D.caqau.g.z.A.A#J.R.f.O#Y#U#f#y#P#N.M.v#d#x......",
+"...i.c.b.a.f#E.D.calaq.Bad#G.d#I.E.#.q#o#N#X#P#P#P#v#A#x........",
+"...e.a.a.b.f#t.x.capap.M.L.k.oae.D.#.K.R.f.B#Y#1#1#V............",
+"...e.b.b.b.f#t.t.calau#P.n.n#Qau.y.#.R.R.#.c....................",
+"...i.e.c.b.f#t.x.haqauau#Y#Yaqau.p.#.R.R.c.h....................",
+"...l.c.e.e.j#t.s.tauau#6.q.q#Nau.h.c.T.0.c.j....................",
+"...c.e.i.i.j#F.x.Dauau.U.S.1.q#5.D.c.5.R.c.j....................",
+"...e.i.l.l.y#b.x.taq#5.A#4an.1#9.H.c#c.Z.c.p....................",
+"...e.l.l.l.3.0.r.5auae.U#N#O#e#9.D.c#m.4.r.I....................",
+"...c.r.x.r.0.J#t#0arau#9.6#d#9au.J.c.R.3.s.I....................",
+"...e.x.y.y.3.3.Z#uauauauauauauah.Q.l.D.0.x......................",
+".....l.H.I.Z#k.y#mauauauau#9#v.4.J.r............................",
+".......y.I.J#k.x.3#T#q#m.3.Q.Q.y.s..............................",
+".........y.Z#t#l#a.Z.J.y.H.x....................................",
+"...........y#l.I.x.x.x.........................................."
+};
+SIMPLE  =                    T                                                  
+BITPIX  =                    8                                                  
+NAXIS   =                    2                                                  
+NAXIS1  =                   32                                                  
+NAXIS2  =                   32                                                  
+HISTORY Written by XV 3.10                                                      
+END                                                                             
+                                                                                
+                                                                                
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diff --git a/examples/demo/opengl/texture.xpm b/examples/demo/opengl/texture.xpm
new file mode 100644
index 0000000..3c423e9
--- /dev/null
+++ b/examples/demo/opengl/texture.xpm
@@ -0,0 +1,130 @@
+/* XPM */
+static char *Monalisa[] = {
+/* width height num_colors chars_per_pixel */
+"    48    48       27            1",
+/* colors */
+". c #000000",
+"# c #281808",
+"a c #38240c",
+"b c #492c10",
+"c c #553414",
+"d c #593818",
+"e c #5a5a5a",
+"f c #65411c",
+"g c #794d24",
+"h c #7d5124",
+"i c #86592c",
+"j c #966534",
+"k c #9a6938",
+"l c #aa7545",
+"m c #ae7949",
+"n c #b68251",
+"o c #be8a59",
+"p c #c79665",
+"q c #cf9e6d",
+"r c #d3a275",
+"s c #d7aa7d",
+"t c #dfb28a",
+"u c #e3ba92",
+"v c #ebc7a6",
+"w c #ebcbae",
+"x c #ffffff",
+"y c None",
+/* pixels */
+"eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
+"e..............................................x",
+"e.oppqnnoononoonnoonpppooqpooonopppqppoonnpoopox",
+"e.oloonpnoonpooooopnpolljjllnpnqoopooopnnnnpoopx",
+"e.looooopnoonpoppoplifbbbbccdgloppppoqpoooopoqqx",
+"e.ooopqppqpoopopppibbdcababbddcdloppqoolpnppppqx",
+"e.pporpppppqppqoogbcdgabbbbbaccdckppqqpoopoqrrrx",
+"e.rpqqqooppoprrrgbccgdbcbbaababccbjppqqppopoqrrx",
+"e.pqppqsqpppqrrkbbdilkigcbabbabbdcclpqpqopppqqqx",
+"e.oqqqppqpqqrtpcgnrstrrnmifbbbbccccdnpqrqqqoqqqx",
+"e.qpqpqpqpqstrjdnruwwwusrnigcbabccdchrrsrqrqqprx",
+"e.oqqpqqpqrttoajrvwwwwwwrrlhdbbaacdcborqrrrrqrrx",
+"e.qqqrrtrstwtfdntwvvwvwwuqmjgcbbbacbbirqpqrrrrsx",
+"e.qrrrrrrrtvofdntwvwwvwutpmkidcbaaababpnopppprrx",
+"e.srprrrprspidhouwwvvwvtsrpnkjfbbaaaabjknnmnpprx",
+"e.rrsrrssssoddiruvvvvwvwttrrokgccbbabagjkkkmpnpx",
+"e.stwrwrwrvkddipuuvvvvtssrrpnkfdcbbaaafiijkllmnx",
+"e.lnrsrwrvpjddfppoqutslllmmkjifcddbbbbffhiklknmx",
+"e.kjjrsrwrmfddffkkjpslfilifdbhgcccbbbbcfgghjkkkx",
+"e.ijjrwrrrofdddblafmtiimmahfklhbccbabacfffgjjjhx",
+"e.hjjppklonddakoonlrtilrrnkornicccbbaacgfggfihfx",
+"e.fhfkiidjkdbakttrsrtmosstttrmhddddcbcbdffhkfghx",
+"e.dffafhfffhaairuutusqmwuwurplhdfddcdccggggghffx",
+"e.dddddfdddaddhruututnrswutrlkfcdfdfdcchjjkkmmkx",
+"e.daffdadaddaadrstrutomustsokffddddcdccddfhihjkx",
+"e.fgddddabadddalrsotpiktutpmkidcddfddcdddddghfgx",
+"e.fcddddbabbdbainrsnfairspnkigdcdfccdcccdddddfdx",
+"e.ddddbbddbbbadfmlsrkmmmmomkjgddfdfgdccdfffffffx",
+"e.ddcdadbbabddahlnlnmiiioonlffdbfdccddddfffffffx",
+"e.cdbbdbdcbcdbdakorrmmkmopniifdcddddcddddffgfgfx",
+"e.cddcbdddcabddadkrqmlmmnlkfhdbccccddcccdfdfgfgx",
+"e.dgffffhhcfadbddalsvtonkjffddcdccddcdccdggfgggx",
+"e.dcdddffgdadddbadaoqomkffffdbbbcbdddcbccfffgfgx",
+"e.cdddgilkfbcdbdaaaaiffffdfdbddbccddccbbcffdfgfx",
+"e.fhggghkkhddbdbaaaaadfafddbfbddccccbcbbcfddfgdx",
+"e.hkhmllkkidabdbbaaaafdfadbddffdcbabbbbabdffdfgx",
+"e.imlllhliifddbbb#baakjffddfhhhfcbdbbbbbbfdfiffx",
+"e.hljhllhjhfbdbbaaadafmlkihhhiihdbbbbabbbdfgghgx",
+"e.dhlggiiigdccdbaa#abgmlmkkjkklkhdbdbbdaabbccccx",
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+"e.gbbabbbabbbcbbbbbinrppoonppppojfdffddcbbabcbcx",
+"e.dba#abcbabcbcbdhknrtrtrrrrrrroliffidccccbdcghx",
+"e.fbab#acbbcbbccinsrtttssttwssrpkfigifcbbcbbbcfx",
+"e.daacbbdcbbbbdborpwttwwttwswsrpmigfgdbbdbbbbcdx",
+"e.dcccbcddcbddfirtuwwwswswswrwprlfigfdcddccbacdx",
+"e.fdcdcddbbcddgmrswwwuwtswwtwsrpjiiffccbcfddcbcx",
+"e.fdfhccbbbbfhiowwswwwtwutwttwrpjfiggbcdhgdfcbbx",
+"exxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+};
+SIMPLE  =                    T                                                  
+BITPIX  =                    8                                                  
+NAXIS   =                    2                                                  
+NAXIS1  =                   48                                                  
+NAXIS2  =                   48                                                  
+HISTORY Written by XV 3.10                                                      
+COMMENT the GIMP was here                                                       
+END                                                                             
+                                                                                
+                                                                                
+                                                                                
+                                                                                
+                                                                                
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diff --git a/examples/demo/opengl/wirebox.xpm b/examples/demo/opengl/wirebox.xpm
new file mode 100644
index 0000000..77ca534
--- /dev/null
+++ b/examples/demo/opengl/wirebox.xpm
@@ -0,0 +1,155 @@
+/* XPM */
+static char * EscherCube_xpm[] = {
+"48 48 104 2",
+"  	c None",
+". 	c #30C230C22081",
+"X 	c #30C230C230C2",
+"o 	c #30C2410330C2",
+"O 	c #410330C24103",
+"+ 	c #410341034103",
+"@ 	c #514451445144",
+"# 	c #514461855144",
+"$ 	c #618551446185",
+"% 	c #618561856185",
+"& 	c #71C671C671C6",
+"* 	c #71C6820771C6",
+"= 	c #965882078617",
+"- 	c #861792488617",
+"; 	c #965892489658",
+": 	c #9658A2899658",
+"> 	c #9E79A2899E79",
+", 	c #AEBAAEBA9E79",
+"< 	c #AEBAAEBAAEBA",
+"1 	c #AEBABEFBAEBA",
+"2 	c #BEFBBEFBBEFB",
+"3 	c #CF3CBEFBCF3C",
+"4 	c #CF3CCF3CCF3C",
+"5 	c #DF7DCF3CCF3C",
+"6 	c #DF7DDF7DCF3C",
+"7 	c #DF7DDF7DDF7D",
+"8 	c #EFBEDF7DDF7D",
+"9 	c #DF7DEFBEDF7D",
+"0 	c #EFBEDF7DEFBE",
+"q 	c #EFBEEFBEDF7D",
+"w 	c #208130C22081",
+"e 	c #410351445144",
+"r 	c #514451446185",
+"t 	c #71C6618571C6",
+"y 	c #861771C68617",
+"u 	c #9E7992489E79",
+"i 	c #9E79AEBA9E79",
+"p 	c #BEFBAEBABEFB",
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author	Timothy Pearson <kb9vqf@pearsoncomputing.net>	2011-07-10 15:24:15 -0500
committer	Timothy Pearson <kb9vqf@pearsoncomputing.net>	2011-07-10 15:24:15 -0500
commit	bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch)
tree	7a520322212d48ebcb9fbe1087e7fca28b76185c /examples/demo/opengl
download	qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip