summaryrefslogtreecommitdiffstats
path: root/tdescreensaver/xsavers/space.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tdescreensaver/xsavers/space.cpp')
-rw-r--r--tdescreensaver/xsavers/space.cpp735
1 files changed, 735 insertions, 0 deletions
diff --git a/tdescreensaver/xsavers/space.cpp b/tdescreensaver/xsavers/space.cpp
new file mode 100644
index 00000000..a15dd171
--- /dev/null
+++ b/tdescreensaver/xsavers/space.cpp
@@ -0,0 +1,735 @@
+/*
+ *
+ * kStart OpenGL screensave for KDE
+ *
+ * $Id$
+ *
+ * Copyright (C) 1998 Bernd Johannes Wuebben
+ * wuebben@math.cornell.edu
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Based on star.c:
+ *
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#define LONG64
+//#define TQT_CLEAN_NAMESPACE
+
+#include <tqslider.h>
+#include <tqlayout.h>
+#include <kglobal.h>
+#include <kconfig.h>
+#include <krandomsequence.h>
+#include <kdebug.h>
+#include "xlock.h"
+#include "helpers.h"
+#ifdef HAVE_CONFIG_H
+#include "../../config.h"
+#endif
+
+#ifdef HAVE_GL
+
+#include <klocale.h>
+
+#undef index
+#include "space.h"
+#include <math.h>
+#include <X11/Intrinsic.h>
+#ifdef HAVE_GL_XMESA_H
+#include <GL/xmesa.h>
+#endif
+#include <GL/gl.h>
+#include <GL/glx.h>
+#ifdef HAVE_GL_GLUT_H
+// We don't need GLUT, but some BROKEN GLU implemenations, such as the one
+// used in SuSE Linux 6.3, do. :(
+#include <GL/glut.h>
+#endif
+#include <GL/glu.h>
+
+#ifndef PI
+#ifdef M_PI
+#define PI M_PI
+#else
+#define PI 3.141592657
+#endif
+#endif
+
+enum {
+ NORMAL = 0,
+ WEIRD = 1
+} flag = NORMAL;
+
+enum {
+ STREAK = 0,
+ CIRCLE = 1
+};
+
+#define MAXSTARS 400
+#define MAXPOS 10000
+#define MAXWARP1 10
+#define MAXANGLES 6000
+
+
+typedef struct _starRec {
+ GLint type;
+ float x[2], y[2], z[2];
+ float offsetX, offsetY, offsetR, rotation;
+} starRec;
+
+
+GLenum doubleBuffer, directRender;
+GLint windW, windH;
+
+GLint starCount = MAXSTARS / 2;
+float speed = 1.0;
+float warpinterval = 30000.0;
+GLint nitro = 0;
+starRec stars[MAXSTARS];
+float sinTable[MAXANGLES];
+
+static GLXContext glx_context;
+static KRandomSequence *rnd = 0;
+
+float Sin(float angle)
+{
+
+ return (sinTable[(GLint)angle]);
+}
+
+float Cos(float angle)
+{
+
+ return (sinTable[((GLint)angle+(MAXANGLES/4))%MAXANGLES]);
+}
+
+void NewStar(GLint n, GLint d)
+{
+
+ if (rnd->getLong(4) == 0) {
+ stars[n].type = CIRCLE;
+ } else {
+ stars[n].type = STREAK;
+ }
+ stars[n].x[0] = rnd->getDouble() * MAXPOS - MAXPOS / 2;
+ stars[n].y[0] = rnd->getDouble() * MAXPOS - MAXPOS / 2;
+ stars[n].z[0] = rnd->getDouble() * MAXPOS + d;
+ if (rnd->getLong(4) == 0 && flag == WEIRD) {
+ stars[n].offsetX = rnd->getDouble()* 100 - 100 / 2;
+ stars[n].offsetY = rnd->getDouble()* 100 - 100 / 2;
+ stars[n].offsetR = rnd->getDouble()* 25 - 25 / 2;
+ } else {
+ stars[n].offsetX = 0.0;
+ stars[n].offsetY = 0.0;
+ stars[n].offsetR = 0.0;
+ }
+}
+
+void RotatePoint(float *x, float *y, float rotation)
+{
+ float tmpX, tmpY;
+
+ tmpX = *x * Cos(rotation) - *y * Sin(rotation);
+ tmpY = *y * Cos(rotation) + *x * Sin(rotation);
+ *x = tmpX;
+ *y = tmpY;
+}
+
+void MoveStars(void)
+{
+ float offset;
+ GLint n;
+
+ offset = speed * 60.0;
+
+ for (n = 0; n < starCount; n++) {
+ stars[n].x[1] = stars[n].x[0];
+ stars[n].y[1] = stars[n].y[0];
+ stars[n].z[1] = stars[n].z[0];
+ stars[n].x[0] += stars[n].offsetX;
+ stars[n].y[0] += stars[n].offsetY;
+ stars[n].z[0] -= offset;
+ stars[n].rotation += stars[n].offsetR;
+ if (stars[n].rotation > MAXANGLES) {
+ stars[n].rotation = 0.0;
+ }
+ }
+}
+
+GLenum StarPoint(GLint n)
+{
+ float x0, y0, x1, y1, width;
+ GLint i;
+
+ x0 = stars[n].x[0] * windW / stars[n].z[0];
+ y0 = stars[n].y[0] * windH / stars[n].z[0];
+ RotatePoint(&x0, &y0, stars[n].rotation);
+ x0 += windW / 2.0;
+ y0 += windH / 2.0;
+
+ if (x0 >= 0.0 && x0 < windW && y0 >= 0.0 && y0 < windH) {
+ if (stars[n].type == STREAK) {
+ x1 = stars[n].x[1] * windW / stars[n].z[1];
+ y1 = stars[n].y[1] * windH / stars[n].z[1];
+ RotatePoint(&x1, &y1, stars[n].rotation);
+ x1 += windW / 2.0;
+ y1 += windH / 2.0;
+
+ glLineWidth(MAXPOS/100.0/stars[n].z[0]+1.0);
+ glColor3f((MAXWARP1-speed)/MAXWARP1, (MAXWARP1-speed)/MAXWARP1, .9);
+ if (fabs(x0-x1) < 1.0 && fabs(y0-y1) < 1.0) {
+ glBegin(GL_POINTS);
+ glVertex2f(x0, y0);
+ glEnd();
+ } else {
+ glBegin(GL_LINES);
+ glVertex2f(x0, y0);
+ glVertex2f(x1, y1);
+ glEnd();
+ }
+ } else {
+ width = MAXPOS / 10.0 / stars[n].z[0] + 1.0;
+ glColor3f(1.0, 0.0, 0.0);
+ glBegin(GL_POLYGON);
+ for (i = 0; i < 8; i++) {
+ float x = x0 + width * Cos((float)i*MAXANGLES/8.0);
+ float y = y0 + width * Sin((float)i*MAXANGLES/8.0);
+ glVertex2f(x, y);
+ };
+ glEnd();
+ }
+ return GL_TRUE;
+ } else {
+ return GL_FALSE;
+ }
+}
+
+void ShowStars(void)
+{
+ GLint n;
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ for (n = 0; n < starCount; n++) {
+ if (stars[n].z[0] > speed || (stars[n].z[0] > 0.0 && speed < MAXWARP1)) {
+ if (StarPoint(n) == GL_FALSE) {
+ NewStar(n, MAXPOS);
+ }
+ } else {
+ NewStar(n, MAXPOS);
+ }
+ }
+}
+
+static void Init(void)
+{
+ float angle;
+ GLint n;
+
+ for (n = 0; n < MAXSTARS; n++) {
+ NewStar(n, 100);
+ }
+
+ angle = 0.0;
+ for (n = 0; n < MAXANGLES ; n++) {
+ sinTable[n] = sin(angle);
+ angle += PI / (MAXANGLES / 2.0);
+ }
+
+ glClearColor(0.0, 0.0, 0.0, 0.0);
+
+ glDisable(GL_DITHER);
+}
+
+void reshape(int width, int height)
+{
+
+ windW = (GLint)width;
+ windH = (GLint)height;
+
+ glViewport(0, 0, windW, windH);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluOrtho2D(-0.5, windW+0.5, -0.5, windH+0.5);
+ glMatrixMode(GL_MODELVIEW);
+
+}
+
+void Idle(void)
+{
+
+ MoveStars();
+ ShowStars();
+ if (nitro > 0) {
+ speed = (float)(nitro / 10) + 1.0;
+ if (speed > MAXWARP1) {
+ speed = MAXWARP1;
+ }
+ if (++nitro > MAXWARP1*10) {
+ nitro = -nitro;
+ }
+ } else if (nitro < 0) {
+ nitro++;
+ speed = (float)(-nitro / 10) + 1.0;
+ if (speed > MAXWARP1) {
+ speed = MAXWARP1;
+ }
+ }
+
+ glFlush();
+
+ /* if (doubleBuffer) {
+ tkSwapBuffers();
+ }*/
+}
+
+
+void
+drawSpace(Window /*window*/)
+{
+
+ /*
+ Display *display = dsp;
+ //glXMakeCurrent(display, window, mp->glx_context);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glFlush();
+ glXSwapBuffers(display, window);
+ */
+
+ Idle();
+
+}
+
+
+void release_Space(){
+
+ glXDestroyContext(dsp, glx_context);
+
+}
+
+static XVisualInfo *glVis[MAXSCREENS];
+
+int
+getVisual(XVisualInfo * wantVis, int visual_count)
+{
+ Display *display = dsp;
+ static int first;
+ int i;
+
+ if (first) {
+ for (screen = 0; screen < MAXSCREENS; screen++)
+ glVis[screen] = NULL;
+ }
+
+ if (!glVis[screen]) {
+ if (mono) {
+ /* Monochrome display - use color index mode */
+ int attribList[] = {GLX_DOUBLEBUFFER, None};
+
+ glVis[screen] = glXChooseVisual(display, screen, attribList);
+ } else {
+ int attribList[] =
+ {GLX_RGBA, GLX_DOUBLEBUFFER, GLX_DEPTH_SIZE, 1, None};
+
+ glVis[screen] = glXChooseVisual(display, screen, attribList);
+ }
+ }
+ // Make sure we have a visual
+ if (!glVis[screen]) {
+ return (0);
+ }
+
+ /* check if GL can render into root window. */
+ for(i=0;i<visual_count;i++)
+ if ( (glVis[screen]->visual == (wantVis+i)->visual) )
+ return (1); // success
+
+ // The visual we received did not match one we asked for
+ return (0);
+}
+
+void
+initSpace(Window window)
+{
+ Display *display = dsp;
+ XWindowAttributes xwa;
+
+
+ (void) XGetWindowAttributes(dsp, window, &xwa);
+ int n;
+ XVisualInfo *wantVis, vTemplate;
+ int VisualClassWanted=-1;
+
+ vTemplate.screen = screen;
+ vTemplate.depth = xwa.depth;
+
+ if (VisualClassWanted == -1) {
+ vTemplate.c_class = DefaultVisual(display, screen)->c_class;
+ } else {
+ vTemplate.c_class = VisualClassWanted;
+ }
+
+ wantVis = XGetVisualInfo(display,
+ VisualScreenMask | VisualDepthMask | VisualClassMask,
+ &vTemplate, &n);
+
+ if (VisualClassWanted != -1 && n == 0) {
+ /* Wanted visual not found so use default */
+
+ vTemplate.c_class = DefaultVisual(display, screen)->c_class;
+
+ wantVis = XGetVisualInfo(display,
+ VisualScreenMask | VisualDepthMask | VisualClassMask,
+ &vTemplate, &n);
+ }
+ /* if User asked for color, try that first, then try mono */
+ /* if User asked for mono. Might fail on 16/24 bit displays,
+ so fall back on color, but keep the mono "look & feel". */
+
+ if (!getVisual(wantVis, n)) {
+ if (!getVisual(wantVis, n)) {
+ kdError() << i18n("GL can not render with root visual\n") << endl;
+ return;
+ }
+ }
+
+ /* PURIFY 3.0a on SunOS4 reports a 104 byte memory leak on the next line each
+ * time that morph3d mode is run in random mode. */
+
+ glx_context = glXCreateContext(display, wantVis, 0, True);
+
+ XFree((char *) wantVis);
+
+
+ glXMakeCurrent(display, window, glx_context);
+ glDrawBuffer(GL_FRONT);
+
+ if (mono) {
+ glIndexi(WhitePixel(display, screen));
+ glClearIndex(BlackPixel(display, screen));
+ }
+
+ reshape(xwa.width, xwa.height);
+ Init();
+}
+
+
+
+
+#endif
+
+#define MINSPEED 1
+#define MAXSPEED 100
+#define DEFSPEED 50
+#define MINWARP 1
+#define MAXWARP 30
+#define DEFWARP 2
+#define WARPFACTOR 100
+//-----------------------------------------------------------------------------
+
+#include <tqpushbutton.h>
+#include <tqcheckbox.h>
+#include <tqlabel.h>
+#include <tqcolor.h>
+
+#include <kmessagebox.h>
+
+#include "space.moc"
+
+#undef Below
+
+static kSpaceSaver *saver = NULL;
+
+void startScreenSaver( Drawable d )
+{
+ if ( saver )
+ return;
+ saver = new kSpaceSaver( d );
+}
+
+void stopScreenSaver()
+{
+ if ( saver )
+ delete saver;
+ saver = NULL;
+}
+
+int setupScreenSaver()
+{
+ kSpaceSetup dlg;
+
+ return dlg.exec();
+}
+
+//-----------------------------------------------------------------------------
+
+kSpaceSaver::kSpaceSaver( Drawable drawable ) : kScreenSaver( drawable )
+{
+ rnd = new KRandomSequence();
+ readSettings();
+ counter = (int)warpinterval *WARPFACTOR;
+
+ colorContext = TQColor::enterAllocContext();
+
+ initXLock( mGc );
+ initSpace( mDrawable );
+
+ timer.start( speed );
+ connect( &timer, TQT_SIGNAL( timeout() ), TQT_SLOT( slotTimeout() ) );
+}
+
+kSpaceSaver::~kSpaceSaver()
+{
+ timer.stop();
+ release_Space();
+ TQColor::leaveAllocContext();
+ TQColor::destroyAllocContext( colorContext );
+ delete rnd; rnd = 0;
+}
+
+void kSpaceSaver::setSpeed( int spd )
+{
+ timer.stop();
+ speed = MAXSPEED - spd ;
+ // printf("speed %d\n",speed);
+ timer.stop();
+ timer.start( speed );
+}
+
+void kSpaceSaver::setWarp( int w )
+{
+ warpinterval = w;
+ counter = (int)warpinterval;
+ initSpace( mDrawable );
+}
+
+void kSpaceSaver::readSettings()
+{
+ TDEConfig *config = klock_config();
+ config->setGroup( "Settings" );
+
+ TQString str;
+
+ str = config->readEntry( "Speed" );
+ if ( !str.isNull() )
+ speed = MAXSPEED - str.toInt();
+ else
+ speed = DEFSPEED;
+
+ warpinterval = config->readNumEntry( "WarpInterval", 15 );
+ delete config;
+}
+
+void kSpaceSaver::slotTimeout()
+{
+ //printf("%d %d \n",(int)warpinterval, MAXWARP);
+ if(warpinterval != MAXWARP){
+ if(nitro == 0)
+ counter -= speed +1;
+
+ if(counter <= 0){
+ nitro = 1;
+ counter = (int) warpinterval *WARPFACTOR;
+ }
+ }
+ else
+ nitro = 0;
+
+ drawSpace( mDrawable );
+}
+
+//-----------------------------------------------------------------------------
+
+kSpaceSetup::kSpaceSetup( TQWidget *parent, const char *name )
+ : KDialogBase( parent, name, true, i18n("Setup Space Screen Saver"),
+ Ok|Cancel|Help, Ok, true )
+{
+ setButtonText( Help, i18n( "A&bout" ) );
+ readSettings();
+
+ TQWidget *page = new TQWidget( this );
+ setMainWidget( page );
+ TQHBoxLayout *hb = new TQHBoxLayout( page, 0, spacingHint() );
+ TQVBoxLayout *vb = new TQVBoxLayout( hb, spacingHint() );
+
+ TQLabel *label;
+ TQSlider *slider;
+
+ label = new TQLabel( i18n("Speed:"), page );
+ vb->addWidget( label );
+
+ slider = new TQSlider(MINSPEED, MAXSPEED, 10, speed, Qt::Horizontal,
+ page );
+ vb->addWidget( slider );
+ slider->setTickmarks(TQSlider::Below);
+ slider->setTickInterval(10);
+ connect( slider, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotSpeed( int ) ) );
+
+ label = new TQLabel( i18n("Warp interval:"), page );
+ vb->addWidget( label );
+
+ slider = new TQSlider(MINWARP, MAXWARP, 3, warpinterval,Qt::Horizontal, page );
+ vb->addWidget( slider );
+ slider->setTickmarks(TQSlider::Below);
+ slider->setTickInterval(3);
+ connect( slider, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotWarp( int ) ) );
+
+ vb->addStrut( 150 );
+ vb->addStretch();
+
+ preview = new TQWidget( page );
+ hb->addWidget( preview );
+ preview->setFixedSize( 220, 170 );
+ preview->setBackgroundColor( black );
+ preview->show(); // otherwise saver does not get correct size
+ saver = new kSpaceSaver( preview->winId() );
+}
+
+void kSpaceSetup::readSettings()
+{
+ TDEConfig *config = klock_config();
+ config->setGroup( "Settings" );
+
+ speed = config->readNumEntry( "Speed", speed );
+
+ if ( speed > MAXSPEED )
+ speed = MAXSPEED;
+ else if ( speed < MINSPEED )
+ speed = MINSPEED;
+
+ warpinterval = config->readNumEntry( "WarpInterval", 15 );
+
+ delete config;
+}
+
+void kSpaceSetup::slotSpeed( int num )
+{
+ speed = num ;
+
+ if ( saver )
+ saver->setSpeed( speed );
+}
+
+void kSpaceSetup::slotWarp( int num )
+{
+ warpinterval = num;
+ if ( saver )
+ saver->setWarp( warpinterval );
+}
+
+void kSpaceSetup::slotOk()
+{
+ TDEConfig *config = klock_config();
+ config->setGroup( "Settings" );
+
+ TQString sspeed;
+ sspeed.setNum( speed );
+ config->writeEntry( "Speed", sspeed );
+
+ TQString interval;
+ interval.setNum( (int)warpinterval );
+ config->writeEntry( "WarpInterval", interval );
+
+ config->sync();
+ delete config;
+ accept();
+}
+
+void kSpaceSetup::slotHelp()
+{
+ KMessageBox::about(this,
+ i18n("KSpace\nCopyright (c) 1998\n"
+ "Bernd Johannes Wuebben <wuebben@kde.org>"));
+}
+
+
+/*
+static GLenum Args(int argc, char **argv)
+{
+ GLint i;
+
+ doubleBuffer = GL_FALSE;
+ directRender = GL_TRUE;
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "-sb") == 0) {
+ doubleBuffer = GL_FALSE;
+ } else if (strcmp(argv[i], "-db") == 0) {
+ doubleBuffer = GL_TRUE;
+ } else if (strcmp(argv[i], "-dr") == 0) {
+ directRender = GL_TRUE;
+ } else if (strcmp(argv[i], "-ir") == 0) {
+ directRender = GL_FALSE;
+ }
+ }
+ return GL_TRUE;
+}
+
+
+
+void main(int argc, char **argv)
+{
+ GLenum type;
+
+ if (Args(argc, argv) == GL_FALSE) {
+ tkQuit();
+ }
+
+ windW = 300;
+ windH = 300;
+ tkInitPosition(0, 0, 300, 300);
+
+ type = TK_RGB;
+ type |= (doubleBuffer) ? TK_DOUBLE : TK_SINGLE;
+ type |= (directRender) ? TK_DIRECT : TK_INDIRECT;
+ tkInitDisplayMode(type);
+
+ if (tkInitWindow("Stars") == GL_FALSE) {
+ tkQuit();
+ }
+
+ Init();
+
+ tkExposeFunc(Reshape);
+ tkReshapeFunc(Reshape);
+ tkKeyDownFunc(Key);
+ tkIdleFunc(Idle);
+ tkExec();
+}
+
+*/
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-26 02:26:07 +0000