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50
51#ifndef MAINWIDGET_H
52#define MAINWIDGET_H
53
54#include "geometryengine.h"
55
56#include <QOpenGLWidget>
57#include <QOpenGLFunctions>
58#include <QMatrix4x4>
59#include <QQuaternion>
60#include <QVector2D>
61#include <QBasicTimer>
62#include <QOpenGLShaderProgram>
63#include <QOpenGLTexture>
64
65class GeometryEngine;
66
67class MainWidget : public QOpenGLWidget, protected QOpenGLFunctions
68{
69 Q_OBJECT
70
71public:
72 using QOpenGLWidget::QOpenGLWidget;
73 ~MainWidget();
74
75protected:
76 void mousePressEvent(QMouseEvent *e) override;
77 void mouseReleaseEvent(QMouseEvent *e) override;
78 void timerEvent(QTimerEvent *e) override;
79
80 void initializeGL() override;
81 void resizeGL(int w, int h) override;
82 void paintGL() override;
83
84 void initShaders();
85 void initTextures();
86
87private:
88 QBasicTimer timer;
89 QOpenGLShaderProgram program;
90 GeometryEngine *geometries = nullptr;
91
92 QOpenGLTexture *texture = nullptr;
93
94 QMatrix4x4 projection;
95
96 QVector2D mousePressPosition;
97 QVector3D rotationAxis;
98 qreal angularSpeed = 0;
99 QQuaternion rotation;
100};
101
102#endif // MAINWIDGET_H
103

source code of qtbase/examples/opengl/cube/mainwidget.h