OPENGL室内三维效果

#include <windows.h> #include <stdio.h> #include <stdlib.h> #include <gl/Gl.h> #include <gl/Glu.h> #include <gl/glut.h> #define checkImageWidth 64 #define checkImageHeight 64 static GLubyte checkImage[checkImageHeight][checkImageWidth][4]; static GLuint texName; static GLfloat xrot=0; static GLfloat yrot=0; //函数功能：绘制墙壁 void DrawWall(void) { glPushMatrix(); glTranslated(1.0, 0.01, 1.0); glScaled(2.0, 0.02, 2.0); glutSolidCube(1.0); glPopMatrix(); } //函数功能：绘制立方柱体 void DrawPillar(void) { glPushMatrix(); glTranslated(0, 0.15, 0); glScaled(0.02, 0.3, 0.02); glutSolidCube(1.0); glPopMatrix(); } //函数功能：绘制桌子 void DrawTable(void) { glPushMatrix(); glTranslated(0.05, 0.3, 0.05); glScaled(0.6, 0.02, 0.6); glutSolidCube(1.0); //绘制桌面 glPopMatrix(); glPushMatrix(); glTranslated(0.275, 0, 0.275); DrawPillar(); //绘制桌腿 glTranslated(0, 0, -0.45); DrawPillar(); //绘制桌腿 glTranslated(-0.45, 0, 0.45); DrawPillar(); //绘制桌腿 glTranslated(0, 0, -0.45); DrawPillar(); //绘制桌腿 glPopMatrix(); } //函数功能：绘图 void display(void) { glEnable(GL_LIGHTING); //启动光源 glEnable(GL_LIGHT0); //第一个光源 glShadeModel(GL_SMOOTH); glEnable(GL_DEPTH_TEST); //删除隐藏的表面 glEnable(GL_NORMALIZE); //将阴影向量正则化 glClearColor(1.0f, 1.0f, 1.0f, 0.0f); //设置表面材料的属性 GLfloat mat_ambient[] = {0.5f,0.5f,0.5f,1.0f}; GLfloat mat_diffuse[] = {0.7f,0.7f,0.7f,1.0f}; GLfloat mat_specular[] = {1.0f,1.0f,1.0f,1.0f,}; GLfloat mat_shininess[] = {70.0f}; glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient); //指定环境泛光的强度 glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); //漫反射的强度 glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); //镜面反射的强度 glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); //镜面反射光的会聚强度 //绘制地面纹理图案 int i, j, c; for (i = 0; i < checkImageHeight; i++) { for (j = 0; j < checkImageWidth; j++) { c = ((((i&0x5)==0)^((j&0x5))==0))*225; checkImage[i][j][0] = (GLubyte) c; checkImage[i][j][1] = (GLubyte) c; checkImage[i][j][2] = (GLubyte) c; checkImage[i][j][3] = (GLubyte) 255; } } glPixelStorei(GL_UNPACK_ALIGNMENT, 1); //控制像素存储模式 glGenTextures(1, &texName); //用来生成纹理的数量为1 glBindTexture(GL_TEXTURE_2D, texName); //绑定纹理 //纹理滤波，图象从纹理图象空间映射到帧缓冲图象空间 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, checkImage); //设置光源属性 GLfloat light_position[]={2.0f, 6.0f, 3.0f, 0.0f}; //光源位置 glLightfv(GL_LIGHT0,GL_POSITION,light_position); glMatrixMode(GL_PROJECTION);//后继操作都在投影变换范围内 glLoadIdentity(); //设置当前矩阵为单位矩阵 GLfloat h = 1.0; //窗口的一半高度 glOrtho(-h*64/48.0, h*64/48.0, -h, h, 0.1, 100.0); glMatrixMode(GL_MODELVIEW); //选择模型观察矩阵 glLoadIdentity(); gluLookAt(1, 1.6, 2, 0, 0.2, 0, 0, 1, 0); //设置观察坐标系 //开始绘制 glRotatef(xrot, 1.0f, 0.0f, 0.0f); glRotatef(yrot, 0.0f, 1.0f, 0.0f); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); glRotated(-90.0, 0.0, 1.0, 0.0); glBegin(GL_QUADS); //绘制墙面 //绘制四边形并给出当前顶点所对应的纹理坐标 glVertex3f(0.0, 0.0, 0.0); glVertex3f(0.0, 2.0, 0.0); glVertex3f(2.0, 2.0, 0.0); glVertex3f(2.0, 0.0, 0.0); glEnd(); //DrawWall(); //绘制一面墙壁 glPopMatrix(); glPushMatrix(); glRotated(-90.0, 1.0, 0.0, 0.0); DrawWall(); //绘制另一面墙壁 glPopMatrix(); glPushMatrix(); glTranslated(0.8, 0, 0.8); DrawTable(); //绘制桌子 glPopMatrix(); glPushMatrix(); glTranslated(1.4, 0.1, 1.0); glScaled(0.8, 0.8, 1.0); glutSolidCube(0.2); //绘制箱子 glPopMatrix(); glPushMatrix(); glTranslated(0.9, 0.38, 0.9); glRotated(90, 0, 1, 0); glutSolidTeapot(0.1); //绘制茶壶 glPopMatrix(); glPushMatrix(); glTranslated(0.7, 0.1, 1.6); glutSolidSphere(0.1, 30, 50); //绘制球体 glPopMatrix(); /*glPushMatrix(); glTranslated(1.0, 0.35, 0.3); glScaled(0.03, 0.7, 0.03); glutSolidCube(1.0); //绘制灯柱 glPopMatrix();*/ glPushMatrix(); glTranslated(0.2, 0.65, 0.2); glRotated(-90, 1.0, 0.0, 0.0); glutSolidCone(0.20, 0.35f, 30, 50); //绘制圆锥型灯罩 glPopMatrix(); glPushMatrix(); glTranslated(1.75, 0.1, 0.2); glScaled(2.5, 0.8, 1.9); glutSolidCube(0.2); //绘制底座 glPopMatrix(); glPushMatrix(); glTranslated(1.75, 0.2, 0.2); glRotated(-90, 1.0, 0.0, 0.0); glutSolidCone(0.15, 0.3f, 30, 50); //绘制圆锥型装饰 glPopMatrix(); glPushMatrix(); glTranslated(0.65, 0.075, 0.2); glScaled(1.0, 0.15, 0.4); glutSolidCube(1.0); //绘制床身 glPopMatrix(); glPushMatrix(); glTranslated(0.15, 0.18, 0.2); glScaled(0.05, 0.36, 0.4); glutSolidCube(1.0); //绘制床头 glPopMatrix(); //绘制纹理 glEnable(GL_TEXTURE_2D); //开启纹理 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);//映射方式 glBegin(GL_QUADS); //绘制地面 //绘制四边形并给出当前顶点所对应的纹理坐标 glTexCoord2f(0.0, 0.0); glVertex3f(0.0, 0.0, 0.0); glTexCoord2f(0.0, 1.0); glVertex3f(0.0, 0.0, 2.0); glTexCoord2f(1.0, 1.0); glVertex3f(2.0, 0.0, 2.0); glTexCoord2f(1.0, 0.0); glVertex3f(2.0, 0.0, 0.0); glEnd(); glDisable(GL_TEXTURE_2D); //关闭纹理 glFlush(); //绘图结果显示到屏幕上 } //函数功能：处理按键交互信息 void SpecialKeys(int key, int x, int y) { switch (key) { case GLUT_KEY_UP: //上键 xrot += 5.0; break; case GLUT_KEY_DOWN: //下键 xrot -= 5.0; break; case GLUT_KEY_LEFT: //左键 yrot += 5.0; break; case GLUT_KEY_RIGHT: //右键 yrot -= 5.0; break; default: break; } glutPostRedisplay(); //标记当前窗口需要重新绘制 glFlush(); //绘图结果显示到屏幕上 } //函数功能：改变窗口大小 void ChangeSize(int w, int h) { GLfloat lightPos[] = {-50.f, 50.0f, 100.0f, 1.0f}; GLfloat nRange = 1.9f; if (h == 0) h = 1; glViewport(0, 0, w, h); //重新设置屏幕上的窗口大小 glMatrixMode(GL_PROJECTION);//后继操作都在投影变换范围内 glLoadIdentity(); //设置当前矩阵为单位矩阵 //正交投影 if (w <= h) glOrtho (-nRange, nRange, -nRange*h/w, nRange*h/w, -nRange, nRange); else glOrtho (-nRange*w/h, nRange*w/h, -nRange, nRange, -nRange, nRange); glMatrixMode(GL_MODELVIEW); //选择模型观察矩阵 glLoadIdentity(); //设置当前矩阵为单位矩阵 glLightfv(GL_LIGHT0, GL_POSITION, lightPos);//重新定义光源 } void main () { glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH); //双缓存 glutInitWindowSize(700, 500); //窗口大小 glutInitWindowPosition(200, 100); //窗口位置 glutCreateWindow("Distance"); //创建窗口，名为My Indoor glutDisplayFunc(display); //显示回调函数，用于绘图 glutReshapeFunc(ChangeSize); //处理改变窗口大小 glutSpecialFunc(SpecialKeys); //处理按键交互信息 glutMainLoop(); //让GLUT框架开始运行, 处理交互事件 }