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/*
**************************************************************************
description
--------------------
copyright : (C) 2000-2001 by Andreas Zehender
email : zehender@kde.org
**************************************************************************
**************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
**************************************************************************/
#ifndef PMVIEWSTRUCTURE_H
#define PMVIEWSTRUCTURE_H
#include "pmface.h"
#include "pmpoint.h"
#include "pmline.h"
#include "pmmatrix.h"
#include "pmobject.h"
#include "pmvector.h"
/**
* Represents the view structure (points, lines, faces) of an object
*
* Faces are not implemented yet but are needed later to calculate the view
* structure of csg objects
*/
class PMViewStructure
{
friend class PMObject;
public:
/**
* Creates an empty view structure
*/
PMViewStructure( );
/**
* Creates a view structure with n points, l lines and f faces.
*/
PMViewStructure( unsigned int n, unsigned int l, unsigned int f = 0 );
/**
* Creates a copy of the view structure. m_points, m_lines and m_faces are shared
*/
PMViewStructure( const PMViewStructure& vs );
/**
* Creates a copy of the view structure. m_points, m_lines anf m_faces are shared
*/
PMViewStructure( const PMViewStructure* vs );
/**
* Returns a reference to the array of points
*/
PMPointArray& points( ) { return m_points; }
/**
* Returns a reference to the array of lines
*/
PMLineArray& lines( ) { return m_lines; }
/**
* Returns a refrence to the array of faces
*/
PMFaceArray& faces( ) { return m_faces; }
/**
* Returns the parameter key
*/
int parameterKey( ) const { return m_parameterKey; }
/**
* Sets the parameter key
*/
void setParameterKey( int k ) { m_parameterKey = k; }
/**
* Assigns the view structure to this view structure.
* The points and lines are shared
*/
PMViewStructure& operator = ( const PMViewStructure& vs );
/**
* Returns true if the view structures share the same points and lines
*/
bool operator == ( const PMViewStructure& vs ) const;
/**
* Returns false if the view structures share the same points and lines
*/
bool operator != ( const PMViewStructure& vs ) const;
protected:
/**
* Not transformed points, can be shared between PMObjects
* of the same type. m_points.data( ) can be used as vertex array.
*
* Optimized for fast rendering.
*/
PMPointArray m_points;
/**
* Lines to display. m_lines.data( ) can be used by glDrawElements.
*
* Optimized for fast rendering.
*/
PMLineArray m_lines;
/**
* Faces to display.
*/
PMFaceArray m_faces;
/**
* View structure parameter key.
*
* Each class can have parameters that modifies the number of lines and
* points of a view structure (detail level).
*
* The framework determines if the view structure is up to date by
* comparing the key with the parameter key of the corresponding class.
*/
int m_parameterKey;
};
/**
* Class for bounding boxes of PMObjects
*/
class PMBoundingBox
{
public:
/**
* Creates a bounding box with min and max vectors
*/
PMBoundingBox( const PMVector& min, const PMVector& max );
/**
* Creates an invalid bounding box. @ref PMObject::boundingBox() returns
* an invalid bounding box, if the object has none.
*/
PMBoundingBox( );
/**
* Returns the minimum coordinates
*/
PMVector min( ) const { return m_min; }
/**
* Returns the maximum coordinates
*/
PMVector max( ) const { return m_max; }
/**
* Returns the minumum x coordinate
*/
double minX( ) const { return m_min.x( ); }
/**
* Returns the minumum y coordinate
*/
double minY( ) const { return m_min.y( ); }
/**
* Returns the minumum z coordinate
*/
double minZ( ) const { return m_min.z( ); }
/**
* Returns the maximum x coordinate
*/
double maxX( ) const { return m_max.x( ); }
/**
* Returns the maximum y coordinate
*/
double maxY( ) const { return m_max.y( ); }
/**
* Returns the maximum z coordinate
*/
double maxZ( ) const { return m_max.z( ); }
/**
* Sets the minimum coordinates
*/
void setMin( const PMVector& min ) { m_min = min; }
/**
* Sets the maximum coordinates
*/
void setMax( const PMVector& max ) { m_max = max; }
/**
* Sets the minimum x coordinate
*/
void setMinX( const double c ) { m_min.setX( c ); }
/**
* Sets the minimum y coordinate
*/
void setMinY( const double c ) { m_min.setY( c ); }
/**
* Sets the minimum z coordinate
*/
void setMinZ( const double c ) { m_min.setZ( c ); }
/**
* Sets the maximum x coordinate
*/
void setMaxX( const double c ) { m_max.setX( c ); }
/**
* Sets the maximum y coordinate
*/
void setMaxY( const double c ) { m_max.setY( c ); }
/**
* Sets the maximum z coordinate
*/
void setMaxZ( const double c ) { m_max.setZ( c ); }
/**
* Returns true, if the bounding box is valid
*/
bool isValid( ) const { return m_bValid; }
/**
* Sets the valid flag to v
*/
void setValid( bool v ) { m_bValid = v; }
/**
* Merges the two bounding boxes
*/
void mergeWith( const PMBoundingBox& box );
private:
bool m_bValid;
PMVector m_min, m_max;
};
#endif
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