QT+OPenGL绘图例子

glPolygonMode(GL_BACK,GL_FILL);//背景 glPolygonMode(GL_FRONT,GL_FILL);//前景
//灯 glLightfv(GL_LIGHT1,GL_AMBIENT,lightAmbient); glLightfv(GL_LIGHT1,GL_DIFFUSE,lightDiffuse); glLightfv(GL_LIGHT1,GL_POSITION,lightPosition); glEnable(GL_LIGHT1);
void drawSphere();//画球体 int drawGLobject();
void initializeGL();//初始化 QpenGL 窗口部件 void paintGL();//绘制 QPenGL 窗口,有更新发生，函数就会被调用 void resizeGL(int w, int h);//处理窗口大小变化，w 和 h 是新状态下的宽和高，完成后自 动刷新屏幕 //void keyPressEvent(QKeyEvent *e);//鼠标按下事件处理函数 void timerEvent(QTimerEvent *);//实现窗口部件的定时操作 void mousePressEvent(QMouseEvent *e);//鼠标单击事件 void mouseMoveEvent(QMouseEvent *e);//鼠标移动事件 void mouseReleaseEvent(QMouseEvent *e);//鼠标释放事件 void wheelEvent(QWheelEvent *e);//鼠标滚轮事件
//雾 glFogi(GL_FOG_MODE,fogMode[fogFilter]); glFogfv(GL_FOG_COLOR,fogColor); glFogf(GL_FOG_DENSITY,0.1);//雾的浓度 glHint(GL_FOG_HINT,GL_DONT_CARE);// 确 定 雾 的 渲 染 方 式 ， 不 关 心 建 议 值 ， GL_NICEST 极棒的，每一像素渲染，GL_FASTEST 对每一顶点渲染，速度快 glFogf(GL_FOG_START,1.0);//雾离屏幕的距离 glFogf(GL_FOG_END,5.0); //glEnable(GL_FOG);
GLfloat sphere_x,sphere_y;
bool light; bool blend;
float points[45][45][3];//存放网格各顶点独立地（x,y,z）坐标 int wiggle_count;//指定波浪的速度
GLuint fogFilter;//选择雾的类型 GLuint filter;//储存纹理变量 QPoint lastPos; GLUquadric *qobj;//二次方程对象
//雾的设定 GLuint fogMode[3] = {GL_EXP,GL_EXP2,GL_LINEAR};//三种雾的效果,依次递进 GLfloat fogColor[4] = {0.5,0.5,1.0,0.3};
glutttt::glutttt(QWidget *parent) : QGLWidget(parent) {
sphere_x = 2.0; sphere_y = 0;
obj =0;
p1 = 0; p2 = 1; part1 = 0; part2 = 0;
setGeometry(50,50,800,600); if (fullScreen) {
showFullScreen(); } startTimer(5); } void glutttt::initializeGL() { loadGLTextures();//先载入纹理 buildLists();//建立列表 glEnable(GL_TEXTURE_2D);//启用纹理 glShadeModel(GL_SMOOTH);//阴影平滑 glClearColor(0.0,0.0,0.0,0.5);//设置清除屏幕时所使用的颜色 glClearDepth(1.0);//设置深度缓存 glEnable(GL_DEPTH_TEST);//启用深度测试 glDepthFunc(GL_LEQUAL);//所做深度测试的类型 glEnable(GL_COLOR_MATERIAL);//可以用颜色来帖纹理 glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);//投影修正
//第三个 glNormal3f(0.0,0.0,-1.0); glTexCoord2f(1.0,0.0);glVertex3f(-1.0,-1.0,-1.0); glTexCoord2f(1.0,1.0);glVertex3f(-1.0,1.0,-1.0); glTexCoord2f(0.0,1.0);glVertex3f(1.0,1.0,-1.0); glTexCoord2f(0.0,0.0);glVertex3f(1.0,-1.0,-1.0); //第四个 glNormal3f(1.0,0.0,0.0); glTexCoord2f(1.0,0.0);glVertex3f(1.0,-1.0,-1.0); glTexCoord2f(1.0,1.0);glVertex3f(1.0,1.0,-1.0); glTexCoord2f(0.0,1.0);glVertex3f(1.0,1.0,1.0); glTexCoord2f(0.0,0.0);glVertex3f(1.0,-1.0,1.0); //第五个 glNormal3f(-1.0,0.0,0.0); glTexCoord2f(0.0,0.0);glVertex3f(-1.0,-1.0,-1.0); glTexCoord2f(1.0,0.0);glVertex3f(-1.0,-1.0,1.0); glTexCoord2f(1.0,1.0);glVertex3f(-1.0,1.0,1.0); glTexCoord2f(0.0,1.0);glVertex3f(-1.0,1.0,-1.0);
//融合 glColor4f(1.0,1.0,1.0,0.5); glBlendFunc(GL_SRC_ALPHA,GL_ONE);
//初始化网格的点，整数循环可以消除浮点数运算取整造成的脉冲锯齿出现 for (int x=0;x<45;x++) {
for (int y=0;y<45;y++) {
points[x][y][0] = float((x/5.0)-5.0);//使波浪居中【-4.5~4.5】 points[x][y][1] = float((y/5.0)-5.0); points[x][y][2] = float(sin((((x/5.0)*40.0)/360.0)*3.141592654*2.0)); } } }
Q_OBJECT public:
glutttt(QWidget *parent = 0); ~glutttt(); void loadGLTextures();//载入纹理 void buildLists();//创建列表 void drawList();//画列表 void drawFlag();//画旗子
int part1;//圆盘的起始角度 int part2;//圆盘的结束角度 int p1;//增量 int p2;//增量 GLuint obj;//要画的对象
bool sp;//空格键是否按下 };
#endif // glutttt_H
//************** glutttt.cpp
QT OPengl 画图例子源码 by liulihuo
环境：Qt4.7.3 + VS2008 效果图：
//*************** glutttt.h
#ifndef GLUTTTT_H #define GLUTTTT_H #include <QtGui/QWidget> #include <qgl.h> #include <QKeyevent> #include <QtOpenGL/glut> #pragma comment(lib, "glaux.lib") class glutttt : public QGLWidget {
bool fullScreen; GLfloat xrot,yrot,zrot; GLfloat zoom; GLfloat hold;//存放用来对旗光滑的浮点数 GLuint texture[4];//四个纹理 GLuint box,top,tri;//存放显示列表的指针 GLuint xLoop,yLoop;//表示两个立方体位置的变量
glEnd(); glEndList();//完成了一个显示列表 top = box + 1;//上一个显示列表的指针加 1，得到第二个显示列表，列表指针为 top glNewList(top,GL_COMPILE); glBegin(GL_QUADS); glNormal3f(0.0,1.0,0.0); glTexCoord2f(0.0,1.0);glVertex3f(-1.0,1.0,-1.0); glTexCoord2f(0.0,0.0);glVertex3f(-1.0,1.0,1.0); glTexCoord2f(1.0,0.0);glVertex3f(1.0,1.0,1.0); glTexCoord2f(1.0,1.0);glVertex3f(1.0,1.0,-1.0); glEnd(); glEndList();//第二个显示列表完毕
{0.5,0.0,0.0}, {0.5,0.25,0.0}, {0.5,0.5,0.0}, {0.5,0.0,0.0}, {0.0,0.5,0.5} t lightAmbient[4] = {0.5,0.5,0.5,1.0}; GLfloat lightDiffuse[4] = {1.0,1.0,1.0,1.0}; GLfloat lightPosition[4] = {0.0,0.0,2.0,1.0};