OpenGL中創(chuàng)建一個球體動畫,使球體在窗口內(nèi)做自由落體運動

1、計算機圖形學(xué)實驗報告1、實驗?zāi)康暮鸵罄玫谄哒滤鶎W(xué)的知識，試在OpenGL中創(chuàng)建一個球體動畫，使球體在窗口內(nèi)做自由落體運動，并在撞擊地面后能夠反彈回來。并用相應(yīng)的代碼表示出來。2、實驗內(nèi)容利用glutSolidSphere函數(shù)等其它函數(shù)，在OpenGL中創(chuàng)建一個球體動畫，使球體在窗口內(nèi)做自由落體運動，并在撞擊地面后能夠反彈回來3、實驗步驟1）相關(guān)算法及原理描述我們所使用的glut實用工具中，正好就有一個繪制球體的現(xiàn)成函數(shù)：glutSolidSphere，這個函數(shù)在“原點繪制出一個球體。由于坐標是可以通過glTranslate*和glRotate*兩個函數(shù)進行隨意變換的，所以我們就可以在任意位

2、置繪制球體了。2）運行結(jié)果如下圖，程序調(diào)試成功，并且能正常顯示4、實驗總結(jié)通過本次試驗，進一步認識，感覺OpenGL的功能很強大，各種各樣的物理模擬實驗他都不在話下！不得不說，這軟件很好很強大！!由于自己不太擅長編程，所以有些功能還不能完全實現(xiàn)，但我會盡自己最大努力來克服自己的編程不足之處，多加練習(xí)。5、附錄帶注釋的源程序#includeglut.h#include#include#include#include#definePI3.1415926doublemove=20.0;inti=0;intdown=1;intcount=1;doubletimeSpan=0;/下降到底所需時間doub

3、lemovey=0.0;doubleduration=0.0;/持續(xù)時間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;/記下下降所經(jīng)歷的時間move=-20;start=clock();down=0;/向上運動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;/控制小球旋轉(zhuǎn)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