OpenGL中创建一个球体动画,使球体在窗口内做自由落体运动

1、计算机图形学实验报告1、实验目的和要求利用第七章所学的知识，试在OpenGL中创建一个球体动画，使球体在窗口内做自由落体运动，并在撞击地面后能够反弹回来。并用相应的代码表示出来。2、实验内容利用glutSolidSphere函数等其它函数，在OpenGL中创建一个球体动画，使球体在窗口内做自由落体运动，并在撞击地面后能够反弹回来3、实验步骤1）相关算法及原理描述我们所使用的glut实用工具中，正好就有一个绘制球体的现成函数：glutSolidSphere，这个函数在“原点绘制出一个球体。由于坐标是可以通过glTranslate*和glRotate*两个函数进行随意变换的，所以我们就可以在任意位

2、置绘制球体了。2）运行结果如下图，程序调试成功，并且能正常显示4、实验总结通过本次试验，进一步认识，感觉OpenGL的功能很强大，各种各样的物理模拟实验他都不在话下！不得不说，这软件很好很强大！!由于自己不太擅长编程，所以有些功能还不能完全实现，但我会尽自己最大努力来克服自己的编程不足之处，多加练习。5、附录带注释的源程序#includeglut.h#include#include#include#include#definePI3.1415926doublemove=20.0;inti=0;intdown=1;intcount=1;doubletimeSpan=0;/下降到底所需时间doub

3、lemovey=0.0;doubleduration=0.0;/持续时间doublelength=0.0;clock_tstart,end;voidinit(void)GLfloatmat_specular=220.220,220.0,220.0,220.0;GLfloatmat_shininess=100.0;GLfloatlight_position=0.0,0.0,0.0,-2.0;/r-lu-df-bGLfloatambientLight=0.2f,0.2f,0.2f,1.0f;GLfloatdiffuseLight=0.6f,0.6f,0.6f,1.0f;GLfloatspecula

4、r=1.0f,1.0f,1.0f,1.0f;glClearColor(0.2,0.2,1.5,2.0);/bgcglColor3ub(100,100,215);glShadeModel(GL_SMOOTH);glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);glLightfv(GL_LIGHT0,GL_AMBIENT,ambientLight);glLightfv(GL_LIGHT0,GL_DIFFUSE,diffuseLight);glLightf

5、v(GL_LIGHT0,GL_SPECULAR,specular);glLightfv(GL_LIGHT0,GL_POSITION,light_position);glEnable(GL_LIGHTING);glEnable(GL_LIGHT0);glEnable(GL_DEPTH_TEST);voidreshape(intw,inth)glViewport(0,0,(GLsizei)w,(GLsizei)h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if(w19.932)move=20;down=1;printf(%i,down);start

6、=clock();display();glLoadIdentity();voidMoveSphereDown()if(count=1)start=clock();count=0;end=clock();duration=(double)(end-start)/CLOCKS_PER_SEC;length=5*duration*duration;move=20-length;if(move-20)timeSpan=duration;/记下下降所经历的时间move=-20;start=clock();down=0;/向上运动display();glLoadIdentity();voidTimerFu

7、nc2(intvalue)if(i=0)/leftGLfloatlight_position=2.0,0.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=1)/left-upGLfloatlight_position=2.0,2.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=2)/upGLfloatlight_position=0.0,2.0,0.0,0.0;/r-lu-df-bglLightfv(

8、GL_LIGHT0,GL_POSITION,light_position);if(i=3)/up-rightGLfloatlight_position=-2.0,2.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=4)/rightGLfloatlight_position=-2.0,0.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=5)/right-downGLfloatlight_position

9、=-2.0,-2.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=6)/downGLfloatlight_position=0.0,-2.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);if(i=7)/down-leftGLfloatlight_position=2.0,-2.0,0.0,0.0;/r-lu-df-bglLightfv(GL_LIGHT0,GL_POSITION,light_position);

10、i=(+i)%8;/控制小球旋转的glutTimerFunc(60,TimerFunc2,1);voidTimerFunc1(intvalue)if(down=1)MoveSphereDown();if(down=0)MoveSphereUp();glutTimerFunc(10,TimerFunc1,0);intmain(intargc,char*argv)glutInit(&argc,argv);glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);glutInitWindowSize(400,740);glutInitWindowPosition(300,20);glutCreateWindow(arg