00001 /*************************************************************************** 00002 glview.h - description 00003 ------------------- 00004 begin : Fri Nov 5 2004 00005 copyright : (C) 2004-2006 by Ben Swerts 00006 email : bswerts@users.sourceforge.net 00007 ***************************************************************************/ 00008 00009 /*************************************************************************** 00010 * * 00011 * This program is free software; you can redistribute it and/or modify * 00012 * it under the terms of the GNU General Public License as published by * 00013 * the Free Software Foundation; either version 2 of the License, or * 00014 * (at your option) any later version. * 00015 * * 00016 ***************************************************************************/ 00017 00020 00021 #ifndef GLVIEW_H 00022 #define GLVIEW_H 00023 00025 00026 // Qt forward class declarations 00027 class QPoint; 00028 class QTimer; 00029 00030 // Xbrabo forward class declarations 00031 #include <glbaseparameters.h> // struct GLBaseParameters can't be declared forward 00032 template <class T> class Quaternion; 00033 00034 // Base class header file 00035 #include <qgl.h> 00036 00038 class GLView : public QGLWidget 00039 { 00040 Q_OBJECT 00041 00042 public: 00044 GLView(QWidget *parent=0, const char *name=0);// constructor 00045 virtual ~GLView(); // destructor 00046 00048 bool isModified() const; // returns whether the scene needs to be saved 00049 bool isAnimating() const; // returns whether the scene is animating 00050 unsigned int calculateFPS(); // returns the maximum framerate for the current parameters 00051 00053 static void setParameters(GLBaseParameters params); // sets new OpenGL parameters 00054 00055 signals: 00056 void modified(); // is emitted when the status changes from non-modified to modified 00057 void changed(); // is emitted everytime something changes 00058 00059 public slots: 00060 void setModified(const bool status = true); // sets the 'modified' status of the scene 00061 void toggleAnimation(); // turns animation on/off 00062 void centerView(const bool update = true); // centers the scene (through xPos and yPos) 00063 void resetOrientation(const bool update = true); // resets the orientation 00064 void zoomFit(const bool update = true); // zooms so the scene fits the window 00065 void resetView(const bool update = true); // resets translation/orientation/zoom 00066 void saveImage(); // saves the current view to an image 00067 00068 protected: 00070 void initializeGL(); // called once upon initialization 00071 void resizeGL(int w, int h); // called when the widget is resized 00072 void paintGL(); // called when the widget has to be repainted 00073 void mousePressEvent(QMouseEvent* e); // event which takes place when a mouse button is pressed 00074 void mouseMoveEvent(QMouseEvent* e);// event which takes place when the mouse is moved while a mousebutton is pressed 00075 void mouseReleaseEvent(QMouseEvent* e); // event which takes place when a mouse button was released on the widget 00076 void keyPressEvent(QKeyEvent* e); // event which takes place when a key was pressed 00077 void wheelEvent(QWheelEvent* e); // event which takes place when the scrollwheel of the mouse is used 00078 virtual void drawScene() = 0; // should contain the actual OpenGL drawing code for the scene 00079 void translateZ(const int amount); // handles Z-direction translations 00080 void translateXY(const int amountX, const int amountY); // handles X- and Y-direction translations 00081 virtual void clicked(const QPoint&);// handles left-mouse clicks at position 00082 virtual void updateGLSettings(); // updates the GL View according to parameters 00083 virtual float boundingSphereRadius() = 0; // calculates the radius of the bounding sphere needed for zoomFit 00084 void updateFog(const float radius); // updates the fog parameters 00085 void updateProjection(); // does the necessary updating when the projection type changes 00086 void setPerspective(); // sets the perspective 00087 00089 GLfloat xPos; 00090 GLfloat yPos; 00091 GLfloat zPos; 00092 Quaternion<float>* orientationQuaternion; 00093 //GLfloat aspectRatio; ///< Needed in resizeGL and selectEntity. 00094 QPoint mousePosition; 00095 00097 static const int redrawWait; 00098 static const float fieldOfView; 00099 static GLBaseParameters baseParameters; 00100 00101 private: 00102 00104 GLfloat xRot; 00105 GLfloat yRot; 00106 GLfloat zRot; 00107 QTimer* timer; 00108 bool animation; 00109 int updateIndex; 00110 bool viewModified; 00111 bool startingClick; 00112 float maxRadius; 00113 bool currentPerspectiveProjection; 00114 00116 static int staticUpdateIndex; 00117 }; 00118 00119 #endif 00120
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