实验三 观察三维物体

实验三实验三 观察三维物体观察三维物体 姓名 叶传军 学号 E11414103 得分 一一 实验题目实验题目 1 阅读 arraycube c 掌握彩色立方体的建模方法 为程序加注释 2 修改 arraycube c 实现交互式地移动照相机来观察已经建模好的彩色立方体 即用鼠标 或键盘来改变 gluLookAt eyex eyey eyez atx aty atz upx upy upz 函数的 9 个参数 以此 来观察立方体 要求 1 交互时采用的鼠标和键盘按键自定 2 分别在正投影和透视投影下实现题目中的功能 3 可增加菜单功能 将正投影和透视投影下的观察功能融合到一个程序中 可参考交互 式教程 Projection c 的功能 3 在 arraycube c 的基础上编写一个交互式程序 实现立方体的旋转 具体要求如下 1 立方体的旋转方式由鼠标和键盘按键来控制 按下鼠标左键 立方体绕 x 轴连续旋转 按下鼠标左键 ctrl 键 立方体绕 y 轴连续旋转 按下鼠标右键 立方体绕 z 轴连续旋转 注意 旋转的不动点在原点 正好是立方体的中心 2 如果旋转的不动点不在原点 而改为点 P 1 1 1 如何实现立方体绕 3 个坐标轴 轴的旋转 3 如果要求每按下一次鼠标按键或键盘按键 立方体旋转的角度增加 5 度 应如何修改 程序 4 自学教材 4 2 7 节 编写一个交互式程序 使其可以通过鼠标 或键盘 和菜单实现一 些 glu 和 glut 对象的旋转 平移和比例缩放 加自己的创意 二二 设计思想设计思想 本次试验主要是用户交互与三维物体观察的结合 主要用到的函数有 gluPerspective fovy aspect near far glOrtho left right bottom top near far gluLookAt eyex eyey eyez atx aty atz upx upy upz 通过这些函数的调用可以分别在正投影和透视投影下从不同的角度来观察三维物体 三三 程序清单程序清单 1 include stdafx h include include GLdouble vertices 8 3 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 GLdouble colors 8 3 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 0 0 1 0 1 0 定义顶点和颜色的全局数组 void polygon int a int b int c int d 根据索引列表绘制多边形 draw a polygon via list of vertices glBegin GL QUADS glColor3dv colors a glVertex3dv vertices a glColor3dv colors b glVertex3dv vertices b glColor3dv colors c glVertex3dv vertices c glColor3dv colors d glVertex3dv vertices d glEnd void colorcube map vertices to faces 利用表面绘制立方体 polygon 0 3 2 1 polygon 2 3 7 6 polygon 0 4 7 3 polygon 1 2 6 5 polygon 4 5 6 7 polygon 0 1 5 4 void display display callback clear frame buffer and z buffer and draw swap buffers 显示回调函数 glClear GL COLOR BUFFER BIT GL DEPTH BUFFER BIT glMatrixMode GL MODELVIEW glLoadIdentity gluLookAt 1 0 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 colorcube glutSwapBuffers void myReshape int w int h 设置投影方式 glViewport 0 0 w h glMatrixMode GL PROJECTION glLoadIdentity if w h glOrtho 2 0 2 0 2 0 GLfloat h GLfloat w 2 0 GLfloat h GLfloat w 10 0 10 0 else glOrtho 2 0 GLfloat w GLfloat h 2 0 GLfloat w GLfloat h 2 0 2 0 10 0 10 0 glMatrixMode GL MODELVIEW void main int argc char argv glutInit glutInitDisplayMode GLUT DOUBLE GLUT RGB GLUT DEPTH 设置窗口的显 示模式 glutInitWindowSize 500 500 指定窗口大小 glutCreateWindow E11414103叶传军 创建一个名为E11414103叶传军的窗口 glClearColor 0 0 0 0 0 0 0 0 指定窗口的背景色为黑色 glShadeModel GL SMOOTH glShadeModel GL FLAT glutReshapeFunc myReshape glutDisplayFunc display 设置当前窗口的显示回调函数 glEnable GL DEPTH TEST Enable hidden surface removal glutMainLoop 启动主GLUT事件处理循环 2 1 include stdafx h include include GLdouble vertices 8 3 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 GLdouble colors 8 3 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 0 0 1 0 1 0 定义顶点和颜色的全局数组 int x1 1 y1 1 z1 1 x2 0 y2 0 z2 0 x3 0 y3 1 z3 0 void polygon int a int b int c int d 根据索引列表绘制多边形 draw a polygon via list of vertices glBegin GL QUADS glColor3dv colors a glVertex3dv vertices a glColor3dv colors b glVertex3dv vertices b glColor3dv colors c glVertex3dv vertices c glColor3dv colors d glVertex3dv vertices d glEnd void colorcube 利用表面绘制立方体 map vertices to faces polygon 0 3 2 1 polygon 2 3 7 6 polygon 0 4 7 3 polygon 1 2 6 5 polygon 4 5 6 7 polygon 0 1 5 4 void display 显示回调函数 display callback clear frame buffer and z buffer and draw swap buffers glClear GL COLOR BUFFER BIT GL DEPTH BUFFER BIT glMatrixMode GL MODELVIEW glLoadIdentity gluLookAt x1 y1 z1 x2 y2 z2 x3 y3 z3 colorcube glutSwapBuffers void myReshape int w int h 设置投影方式正投影 glViewport 0 0 w h glMatrixMode GL PROJECTION glLoadIdentity if w h glOrtho 2 0 2 0 2 0 GLfloat h GLfloat w 2 0 GLfloat h GLfloat w 10 0 10 0 else glOrtho 2 0 GLfloat w GLfloat h 2 0 GLfloat w GLfloat h 2 0 2 0 10 0 10 0 glMatrixMode GL MODELVIEW void keyboard unsigned char key int x int y if key q x1 glutPostRedisplay else if key Q x1 glutPostRedisplay else if key w y1 glutPostRedisplay else if key W y1 glutPostRedisplay else if key e z1 glutPostRedisplay else if key E z1 glutPostRedisplay else if key a x2 glutPostRedisplay else if key A x2 glutPostRedisplay else if key s y2 glutPostRedisplay else if key S y2 glutPostRedisplay else if key d z2 glutPostRedisplay else if key D z2 glutPostRedisplay else if key z x3 glutPostRedisplay else if key Z z3 glutPostRedisplay else if key x y3 glutPostRedisplay else if key X y3 glutPostRedisplay else if key c z3 glutPostRedisplay else if key C z3 glutPostRedisplay void main int argc char argv glutInit glutInitDisplayMode GLUT DOUBLE GLUT RGB GLUT DEPTH 设置窗口的显示模 式 glutInitWindowSize 500 500 指定窗口大小 glutCreateWindow E11414103叶传军 创建一个名为E11414103叶传军的 窗口 glClearColor 0 0 0 0 0 0 0 0 指定窗口的背景色为黑色 glShadeModel GL SMOOTH glShadeModel GL FLAT glutReshapeFunc myReshape glutDisplayFunc display 设置当前窗口的显示回调函数 glutKeyboardFunc keyboard glEnable GL DEPTH TEST Enable hidden surface removal glutMainLoop 启动主GLUT事件处理循环 2 include stdafx h include include GLdouble vertices 8 3 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 GLdouble colors 8 3 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 0 0 1 0 1 0 定义顶点和颜色的全局数组 int x1 1 y1 1 z1 1 x2 0 y2 0 z2 0 x3 0 y3 1 z3 0 void polygon int a int b int c int d 根据索引列表绘制多边形 draw a polygon via list of vertices glBegin GL QUADS glColor3dv colors a glVertex3dv vertices a glColor3dv colors b glVertex3dv vertices b glColor3dv colors c glVertex3dv vertices c glColor3dv colors d glVertex3dv vertices d glEnd void colorcube 利用表面绘制立方体 map vertices to faces polygon 0 3 2 1 polygon 2 3 7 6 polygon 0 4 7 3 polygon 1 2 6 5 polygon 4 5 6 7 polygon 0 1 5 4 void display 显示回调函数 display callback clear frame buffer and z buffer and draw swap buffers glClear GL COLOR BUFFER BIT GL DEPTH BUFFER BIT glMatrixMode GL MODELVIEW glLoadIdentity gluLookAt x1 y1 z1 x2 y2 z2 x3 y3 z3 colorcube glutSwapBuffers void myReshape int w int h 设置投影方式透视投影 glViewport 0 0 w h glMatrixMode GL PROJECTION glLoadIdentity if w h glFrustum 2 0 2 0 2 0 GLfloat h GLfloat w 2 0 GLfloat h GLfloat w 10 0 10 0 else glFrustum 2 0 GLfloat w GLfloat h 2 0 GLfloat w GLfloat h 2 0 2 0 10 0 10 0 glMatrixMode GL MODELVIEW void keyboard unsigned char key int x int y if key q x1 glutPostRedisplay else if key Q x1 glutPostRedisplay else if key w y1 glutPostRedisplay else if key W y1 glutPostRedisplay else if key e z1 glutPostRedisplay else if key E z1 glutPostRedisplay else if key a x2 glutPostRedisplay else if key A x2 glutPostRedisplay else if key s y2 glutPostRedisplay else if key S y2 glutPostRedisplay else if key d z2 glutPostRed