QT + OPenGL 绘图

#include "glutttt.h" #include <math.h> #include <QImage> #include <GLAUX> static GLfloat boxcol[5][3] = { {1.0,0.0,0.0}, {1.0,0.5,0.0}, {1.0,1.0,0.0}, {0.0,1.0,0.0}, {0.0,1.0,1.0} }; static GLfloat topcol[5][3] = { {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} };//两个颜色数组 //设置光源 GLfloat 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}; //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) { xrot = yrot = zrot = 0; zoom = -10.0; hold = 0.0; box = top = tri = 0; xLoop = yLoop = 0; fogFilter = 3; wiggle_count = 0; filter = 0; light = false; blend = false; fullScreen = false; 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 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); //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); //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)); } } } void glutttt::buildLists() { box = glGenLists(3);//建立两个显示列表，box指向第一个列表 glNewList(box,GL_COMPILE);//把列表存储到box所指空间，第二个参数预先在内存中构造这个列表,COMPILE相当于编程，调用的是已经变异好的盒子 glBegin(GL_QUADS); //第一个 glNormal3f(0.0,-1.0,0.0); 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); glTexCoord2f(1.0,0.0);glVertex3f(-1.0,-1.0,1.0); //第二个 glNormal3f(0.0,0.0,1.0); 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); glTexCoord2f(0.0,1.0);glVertex3f(-1.0,1.0,1.0); //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); 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 tri = top +1; glNewList(tri,GL_COMPILE); glBegin(GL_TRIANGLES); //第一面 glNormal3f(0.0,1.0,0.0); glColor3f(1.0,0.0,0.0);glVertex3f(0.0,1.0,0.0); glColor3f(0.0,1.0,0.0);glVertex3f(-1.0,-1.0,1.0); glColor3f(1.0,0.0,1.0);glVertex3f(1.0,-1.0,1.0); //第二面 glNormal3f(0.0,1.0,0.0); glColor3f(1.0,0.0,0.0);glVertex3f(0.0,1.0,0.0); glColor3f(0.0,0.0,1.0);glVertex3f(1.0,-1.0,1.0); glColor3f(0.0,1.0,0.0);glVertex3f(1.0,-1.0,-1.0); //第三面 glNormal3f(0.0,1.0,0.0); glColor3f(1.0,0.0,0.0);glVertex3f(0.0,1.0,0.0); glColor3f(0.0,1.0,0.0);glVertex3f(1.0,-1.0,-1.0); glColor3f(0.0,0.0,1.0);glVertex3f(-1.0,-1.0,-1.0); //第四面 glNormal3f(0.0,1.0,0.0); glColor3f(1.0,0.0,0.0);glVertex3f(0.0,1.0,0.0); glColor3f(0.0,0.0,1.0);glVertex3f(-1.0,-1.0,-1.0); glColor3f(0.0,1.0,0.0);glVertex3f(-1.0,-1.0,1.0); glEnd(); glEndList(); } void glutttt::paintGL() { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);//清除屏幕和深度缓存 glBindTexture(GL_TEXTURE_2D,texture[filter]);//绑定纹理 qobj = gluNewQuadric(); gluQuadricDrawStyle(qobj,GLU_LINE); gluQuadricNormals(qobj,GLU_SMOOTH); switch(obj) { case 0: drawFlag();//旗 break; case 1: drawList();//盒子列表 break; case 2: glLoadIdentity(); glTranslatef(0,0,zoom);// glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); auxWireDodecahedron(2.0); break; case 3: glLoadIdentity(); glTranslatef(0,0,zoom);//球 glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); glutSolidSphere(2,64,64);//实心 break; case 4: glLoadIdentity(); glTranslatef(0,0,zoom);//球 glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); glutWireSphere(2,64,64);//网状 break; case 5: glLoadIdentity(); glTranslatef(0,0,zoom); glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); gluCylinder(qobj,2.0,2.0,4.0,100,5);//圆柱 break; case 6: glLoadIdentity(); glTranslatef(0,0,zoom); glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); gluCylinder(qobj,2.0,0.0,4.0,100,5);//圆锥 break; case 7: glLoadIdentity(); glTranslatef(0,0,zoom);//圆盘 glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); gluDisk(qobj,1.0,2.0,1000,1); break; case 8: glLoadIdentity(); glTranslatef(0,0,zoom);//绘制部分圆盘 glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); part1 += p1; part2 += p2; if (part1>359) { p1 = 0; part1 = 0; p2 = 1; part2 = 0; } if (part2>359) { p1 = 1; p2 =0; } gluPartialDisk(qobj,1.0,3.0,1000,1,part1,part2-part1); break; case 9: //网状茶壶 glLoadIdentity(); glTranslatef(0,0,zoom); glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); glutWireTeapot(3.0); break; case 10: //实心茶壶 glLoadIdentity(); glTranslatef(1.5,-2.5,zoom); glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); glutSolidTeapot(3.0); break; case 11: glLoadIdentity(); glTranslatef(0,0,zoom); glRotatef(xrot,1.0,0.0,0.0); glRotatef(yrot,0.0,1.0,0.0); glRotatef(zrot,0.0,0.0,1.0); glutSolidCone(2,4,64,64);//实心圆锥 break; case 12: glLoadIdentity(); glTranslatef(0,0,zoom); gl