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tdegraphics/kpovmodeler/pmrendermanager.h

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//-*-C++-*-
/*
**************************************************************************
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 PMRENDERMANAGER_H
#define PMRENDERMANAGER_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "pmcontrolpoint.h"
#include "pmmatrix.h"
#include "pmobject.h"
#include "pmviewstructure.h"
#include <tqobject.h>
#include <tqptrlist.h>
#include <tqcolor.h>
#include <tqptrstack.h>
#include <tqvaluestack.h>
#include <kstaticdeleter.h>
#include <GL/gl.h>
class PMGLView;
class PMCamera;
class PMPoint;
class KConfig;
class TQString;
/**
* Used internally by PMRenderManager.
*
* This class stores informations for one render task.
*/
class PMRenderTask
{
public:
PMRenderTask( PMGLView* view, PMObject* active, PMObject* top,
PMControlPointList* controlPoints, double aspectRatio,
int visibilityLevel )
{
m_pView = view;
m_pActiveObject = active;
m_pTopLevelObject = top;
m_pControlPoints = controlPoints;
m_aspectRatio = aspectRatio;
m_visibilityLevel = visibilityLevel;
}
~PMRenderTask( ) { };
PMGLView* view( ) const { return m_pView; }
PMObject* activeObject( ) const { return m_pActiveObject; }
PMObject* topLevelObject( ) const { return m_pTopLevelObject; }
PMControlPointList* controlPoints( ) const { return m_pControlPoints; }
double aspectRatio( ) const { return m_aspectRatio; }
int visibilityLevel( ) const { return m_visibilityLevel; }
void setView( PMGLView* view ) { m_pView = view; }
void setActiveObject( PMObject* obj ) { m_pActiveObject = obj; }
void setTopLevelObject( PMObject* obj ) { m_pTopLevelObject = obj; }
void setControlPoints( PMControlPointList* list ) { m_pControlPoints = list; }
void setAspectRatio( double ar ) { m_aspectRatio = ar; }
void setVisibilityLevel( int l ) { m_visibilityLevel = l; }
private:
PMGLView* m_pView;
PMObject* m_pActiveObject;
PMObject* m_pTopLevelObject;
PMControlPointList* m_pControlPoints;
double m_aspectRatio;
int m_visibilityLevel;
};
typedef TQPtrList<PMRenderTask> PMRenderTaskList;
typedef TQPtrListIterator<PMRenderTask> PMRenderTaskListIterator;
/**
* Class that controls the background rendering
*/
class PMRenderManager : public QObject
{
Q_OBJECT
public:
/**
* Returns a pointer to the render manager
*/
static PMRenderManager* theManager( );
/**
* destructor
*/
~PMRenderManager( );
/**
* Adds the @ref PMGLView to the list of views that have to be rendered.
*
* @param view The view
* @param active The active object
* @param top The top level object (normally the scene)
* @param controlPoints A pointer to the list of control points for the
* active object
* @param graphicalChange If true the view will be rendered with higher
* priority
*/
void addView( PMGLView* view, PMObject* active, PMObject* top,
PMControlPointList* controlPoints, double aspectRatio,
int visibilityLevel, bool graphicalChange );
/**
* Removes the view from the list of views that have to be rendered
*/
void removeView( PMGLView* view );
/**
* Call this method if a PMGLView was created
*/
void viewCreated( ) { m_nViews++; }
/**
* Call this method if a PMGLView was deleted
*/
void viewDeleted( ) { m_nViews--; }
/**
* Returns true if the render manager holds a task for the view
*/
bool containsTask( PMGLView* view ) const;
/**
* Returns the color for the control points
*/
TQColor controlPointColor( int i ) const;
/**
* Sets the control point color
*/
void setControlPointColor( int i, const TQColor& c );
/**
* Returns the color for graphical objects
*/
TQColor graphicalObjectColor( int i ) const;
/**
* Sets the graphical object color
*/
void setGraphicalObjectColor( int i, const TQColor& c );
/**
* Returns the color for the coordinate axes
*/
TQColor axesColor( int i ) const;
/**
* Sets the axes color
*/
void setAxesColor( int i, const TQColor& c );
/**
* Returns the background color
*/
TQColor backgroundColor( ) const { return m_backgroundColor; }
/**
* Sets the background color
*/
void setBackgroundColor( const TQColor& c ) { m_backgroundColor = c; }
/**
* Returns the field of view color.
*/
TQColor fieldOfViewColor( ) const { return m_fieldOfViewColor; }
/**
* Sets the field of view color
*/
void setFieldOfViewColor( const TQColor& c ) { m_fieldOfViewColor = c; }
/**
* Sets the grid color
*/
void setGridColor( const TQColor& c ) { m_gridColor = c; }
/**
* Returns the grid color
*/
TQColor gridColor( ) { return m_gridColor; }
/**
* Sets the grid distance
*/
void setGridDistance( int d );
/**
* Returns the grid distance
*/
int gridDistance( ) { return m_gridDistance; }
/**
* Returns true if the camera views with complex projections
* are rendered with high detail
*/
bool highDetailCameraViews( ) const { return m_highDetailCameraView; }
/**
* Sets the highDetailCameraView flag
*/
void setHighDetailCameraViews( bool yes ) { m_highDetailCameraView = yes; }
/**
* Sets the gl drawing color
*/
static void setGLColor( const TQColor& c );
/**
* Saves the configuration
*/
void saveConfig( KConfig* cfg );
/**
* Restores the configuration
*/
void restoreConfig( KConfig* cfg );
/**
* Returns true if the glx extension is available
*/
static bool hasOpenGL( );
/**
* Disables OpenGL rendering
*/
static void disableOpenGL( );
public slots:
/**
* Stops rendering
*/
void slotStopRendering( );
/**
* Call this when rendering settings have been changed
*/
void slotRenderingSettingsChanged( );
signals:
/**
* Emitted when rendering starts for the view v
*/
void renderingStarted( PMGLView* v );
/**
* Emitted just before the view is updated
*/
void aboutToUpdate( PMGLView* v );
/**
* Emitted when rendering has been finished for the view v
*/
void renderingFinished( PMGLView* v );
/**
* Emitted when rendering settings (colors ...) have been changed
*/
void renderingSettingsChanged( );
/**
* Emitted when rendering has started
*/
void renderingStarted( );
/**
* Emitted when rendering has finished
*/
void renderingFinished( );
protected:
virtual void timerEvent( TQTimerEvent* );
private:
/**
* constructor
*/
PMRenderManager( );
/**
* Restarts rendering
*/
void restartRendering( );
/**
* The background task for rendering
*/
void renderTask( );
/**
* Renders one object
*/
void renderObject( PMObject* obj );
/**
* Renders the view structure, subdivides the lines in high
detail camera views */
void renderViewStructure( PMViewStructure& vs );
/**
* Renders the view structure without subdivisions
*/
void renderViewStructureSimple( PMPointArray& points, PMLineArray& lines,
int numberOfLines = -1 );
/**
* Renders the control points
*/
void renderControlPoints( );
/**
* Draws the grid
*/
void renderGrid( );
/**
* Draws the coordinate axis
*/
void renderAxes( );
/**
* Draws the field of view for camera views
*/
void renderFieldOfView( );
/**
* Draws the view descriptions
*/
void renderDescription( );
/**
* Renders the string
*/
void renderString( const TQString& str, double x, double y );
/**
* Transforms and renders the view structure for special
* camera projection types.
*/
void transformProjection( PMPoint* points, int size, PMCamera* camera );
/**
* Sets the projection for the current view
*/
void setProjection( );
/**
* Sets the projection for a camera view
*/
void setCameraProjection( );
/**
* Calculates the view transformation for the camera c
*/
PMMatrix viewTransformation( PMCamera* c ) const;
/**
* List of render tasks. The first has the highest priority
*/
TQPtrList<PMRenderTask> m_renderTasks;
/**
* Flag for background rendering
*/
bool m_bStopTask, m_bStartTask, m_bTaskIsRunning;
/**
* The color for view structures of graphical objects.
*
* index 0: normal color, 1: selected
*/
TQColor m_graphicalObjectColor[2];
/**
* The color for view structures of textures
*/
TQColor m_textureColor[2];
/**
* The color for the coordinate axes
*/
TQColor m_axesColor[3];
/**
* The background color
*/
TQColor m_backgroundColor;
/**
* color for control points
*
* index 0: normal color, 1: selected
*/
TQColor m_controlPointColor[2];
/**
* Color for the field of view box
*/
TQColor m_fieldOfViewColor;
/**
* Grid distance and color
*/
int m_gridDistance;
TQColor m_gridColor;
/**
* If true, lines are subdivided in camera views with complex
* projections
*/
bool m_highDetailCameraView;
/**
* Number of rendered lines between calls of processEvents( )
*/
unsigned int m_nMaxRenderedLines;
/**
* Number of gl views
*/
unsigned int m_nViews;
/**
* The render manager (singleton pattern)
*/
static PMRenderManager* s_pManager;
static KStaticDeleter<PMRenderManager> s_staticDeleter;
// Member variables to save stack space during rendering
PMRenderTask* m_pCurrentTask;
PMGLView* m_pCurrentGlView;
TQPtrStack<PMMatrix> m_matrixStack; // I don't know if the build in gl matrix stack is deep enough
bool m_selected;
PMObject* m_pDeselectObject;
PMObjectList m_objectToRenderStack;
TQPtrStack<PMObject> m_quickColorObjects;
TQPtrStack<TQColor> m_quickColors;
TQColor m_currentColor;
TQValueStack<int> m_visibilityStack;
int m_currentVisibility;
unsigned int m_renderedLines;
PMMatrix m_controlPointTransformation;
// for transformProjection
bool m_specialCameraMode;
PMMatrix m_viewTransformation;
double m_upLength, m_rightLength, m_directionLength;
double m_anglex, m_angley;
PMViewStructure m_subdivisionViewStructure;
PMViewStructure m_axesViewStructure[3];
bool m_axesViewStructureCreated;
static bool s_hasOpenGL;
static bool s_hasOpenGLChecked;
};
#endif