X-opengl立方体的简单三维交互式几何变换实验报告+代码

./立方体的简单三维交互式几何变换立方体的简单三维交互式几何变换。功能：键盘的方向键实现立方体的上下左右平移；A键,S键分别实现向前,向后旋转；J键,K键分别实现放大,缩小；C键退出。程序模块：1.重绘回调函数,在窗口首次创建或用户改变窗口尺寸时被调用。voidreshape<intw,inth>{ glViewport<0,0,w,h>;//指定视口的位置和大小 glMatrixMode<GL_PROJECTION>; glLoadIdentity<>; //glFrustum<-1.0,1.0,-1.0,1.0,3.1,10.0>; //gluPerspective<45,1,0.1,10.0>;glOrtho<-2.0,2.0,-2.0,2.0,2.0,10.0>;}2.绘制一个立方体。voidDrawBox<>{glBegin<GL_QUADS>; //前面 glColor3f<1,0,0>;glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的左下glVertex3f<1.0f,-1.0f,1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,1.0f>;//四边形的右上glVertex3f<-1.0f,1.0f,1.0f>;//四边形的左上//后面glColor3f<0,1,0>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的右下glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,1.0f,-1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的左下//顶面glColor3f<0,0,1>;glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的左上glVertex3f<-1.0f,1.0f,1.0f>;//四边形的左下glVertex3f<1.0f,1.0f,1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,-1.0f>;//四边形的右上//底面glColor3f<1,1,0>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,1.0f>;//四边形的左下glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的右下//右面glColor3f<0,1,1>;glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,1.0f,1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,1.0f>;//四边形的左下//左面glColor3f<1,0,1>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的左下glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的右下glVertex3f<-1.0f,1.0f,1.0f>;//四边形的右上glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的左上glEnd<>;}3．该模块设置屏幕颜色和深度缓存,设置立方体的平移,缩放,旋转变换。voiddisplay<>{ glClear<GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT>;//清空颜色和深度缓存 glMatrixMode<GL_MODELVIEW>; glLoadIdentity<>; //gluLookAt<2.0,2.0,2.0,0.0,0.0,0.0,0.0,1.0,0.0>; glTranslatef<0.0f+tx,0.0f+ty,-4.0f>;//平移变换 glScalef<1+sf,1+sf,1+sf>;//缩放变换 glRotatef<ratX,1.0f,0.0f,0.0f>;//绕X轴的旋转变换glRotatef<ratY,0.0f,1.0f,0.0f>;//绕Y轴的旋转变换glRotatef<ratZ,0.0f,0.0f,1.0f>;//绕Z轴的旋转变换 DrawBox<>;glFlush<>; glutSwapBuffers<>; }4.该模块为设置深度缓存和启动深度测试模式。voidinit<>{ glClearColor<1.0,1.0,1.0,1.0>; glEnable<GL_DEPTH_TEST>;//启动深度测试模式}5.该模块为设置键盘的交互式操作。voidmyKeyboard<unsignedcharkey,intx,inty>{ if<key=='a'||key=='A'>ratX+=2;ratY+=2;ratZ+=2;if<key=='s'||key=='S'>ratX-=2;ratY-=2;ratZ-=2;if<key=='j'||key=='J'>sf+=0.1;if<key=='k'||key=='K'>sf-=0.1;if<key=='c'||key=='C'> exit<0>;glutPostRedisplay<>;//重新调用绘制函数}6.该模块为设置键盘方向键的交互式操作。voidmyspecialKeyboard<intkey,intx,inty>{ if<key==GLUT_KEY_UP>ty+=0.1;if<key==GLUT_KEY_DOWN>ty-=0.1;if<key==GLUT_KEY_LEFT>tx-=0.1;if<key==GLUT_KEY_RIGHT>tx+=0.1;glutPostRedisplay<>;}7.主函数模块,实现设置显示模式〔窗口大小,位置,调用函数操作。intmain<intargc,char**argv>{ glutInit<&argc,argv>;//初始GLUT. glutInitDisplayMode<GLUT_DEPTH|GLUT_DOUBLE|GLUT_RGB>;//设定显示模式 glutInitWindowSize<400,400>;//设定窗口大小 glutInitWindowPosition<50,100>;//设定窗口位置 glutCreateWindow<"立方体的简单三维交互式几何变换">;//用前面指定参数创建 glutReshapeFunc<reshape>;//指定重绘回调函数 glutDisplayFunc<display>;//进行一些初始化工作 glutKeyboardFunc<myKeyboard>;//指定键盘回调函数glutSpecialFunc<myspecialKeyboard>;//指定键盘回调函数 init<>; glutMainLoop<>;//进入无穷循环,等待事件处理}功能截图:立方体的平移：上平移下平移：左平移：右平移：放大：缩小：旋转：源程序：#include<stdlib.h>#include<GL/glut.h>#include<windows.h>floatratX=60;floatratY=60;floatratZ=60;floattx=0;floatty=0;floatsf=0;voidDrawBox<>{glBegin<GL_QUADS>;//前面 glColor3f<1,0,0>;glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的左下glVertex3f<1.0f,-1.0f,1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,1.0f>;//四边形的右上glVertex3f<-1.0f,1.0f,1.0f>;//四边形的左上//后面glColor3f<0,1,0>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的右下glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,1.0f,-1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的左下//顶面glColor3f<0,0,1>;glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的左上glVertex3f<-1.0f,1.0f,1.0f>;//四边形的左下glVertex3f<1.0f,1.0f,1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,-1.0f>;//四边形的右上//底面glColor3f<1,1,0>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,1.0f>;//四边形的左下glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的右下//右面glColor3f<0,1,1>;glVertex3f<1.0f,-1.0f,-1.0f>;//四边形的右下glVertex3f<1.0f,1.0f,-1.0f>;//四边形的右上glVertex3f<1.0f,1.0f,1.0f>;//四边形的左上glVertex3f<1.0f,-1.0f,1.0f>;//四边形的左下//左面glColor3f<1,0,1>;glVertex3f<-1.0f,-1.0f,-1.0f>;//四边形的左下glVertex3f<-1.0f,-1.0f,1.0f>;//四边形的右下glVertex3f<-1.0f,1.0f,1.0f>;//四边形的右上glVertex3f<-1.0f,1.0f,-1.0f>;//四边形的左上glEnd<>;}voiddisplay<>{ glClear<GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT>;//清空颜色和深度缓存 glMatrixMode<GL_MODELVIEW>; glLoadIdentity<>; //gluLookAt<2.0,2.0,2.0,0.0,0.0,0.0,0.0,1.0,0.0>; glTranslatef<0.0f+tx,0.0f+ty,-4.0f>;//平移变换 glScalef<1+sf,1+sf,1+sf>;//缩放变换 glRotatef<ratX,1.0f,0.0f,0.0f>;//绕X轴的旋转变换glRotatef<ratY,0.0f,1.0f,0.0f>;//绕Y轴的旋转变换glRotatef<ratZ,0.0f,0.0f,1.0f>;//绕Z轴的旋转变换 DrawBox<>;glFlush<>; glutSwapBuffers<>;}voidreshape<intw,inth>//重绘回调函数,在窗口首次创建或用户改变窗口尺寸时被调用{ glViewport<0,0,w,h>;//指定视口的位置和大小 glMatrixMode<GL_PROJECTION>; glLoadIdentity<>; //glFrustum<-1.0,1.0,-1.0,1.0,3.1,10.0>; //gluPerspective<45,1,0.1,10.0>;glOrtho<-2.0,2.0,-2.0,2.0,2.0,10.0>;}voidinit<>{ glClearColor<1.0,1.0,1.0,1.0>; glEnable<GL_DEPTH_TEST>;//启动深度测试模式}voidmyKeyboard<unsignedcharkey,intx,inty>{ if<key=='a'||key=='A'>ratX+=2;ratY+=2;ratZ+=2;if<key=='s'||key=='S'>ratX-=2;ratY-=2;ratZ-=2;if<key=='j'||key=='J'>sf+=0.1;if<key=='k'||key=='K'>sf-=0.1;if<key=='c'||key=='C'> exit<0>;glutPost