图形学试验报告四

本文格式为Word版，下载可任意编辑——图形学试验报告四

《计算机图形学》试验报告

详细代码：3414028995@.com

一、试验目的1，使用opengl函数完成一个图形动画程序，显示太阳、地球、月亮之间的运行关系。2，采用opengl材质、光照技术完成一个在小盒内的运动小球，要求小球作为移动光源，观测运行效果。二、试验要求1.把握Window图形编程的基本方法；2.把握如何进行简单动画制作3.把握如何采用opengl材质、光照技术三、试验设备（环境）Windows系统,vs2023四、试验步骤与结果1.使用opengl函数完成一个图形动画程序，显示太阳、地球、月亮之间的运行关系。使用的一些函数：glShadeModel(GL_FLAT);GL_FLAT则只是以指定的某一点的单一色绘制其他所有点glPushMatrix();//进栈gluLookAt(0.0,0.0,5,0.0,0.0,0.0,0.0,1.0,0.0);//观测角度glRotatef((GLfloat)year,0.0,1.0,0.0);//旋转，(GLfloat)year角度设置，0.0,1.0,0.0坐标设置glTranslatef(2.0,0.0,0.0);//平移，后面代表坐标，沿着x正方向平移glPopMatrix();//出栈glutSwapBuffers();//实现双缓冲glViewport(0,0,(GLsizei)w,(GLsizei)h);//矩形大小的调整运行截图：完整代码：#include\#include#defineGLUT_DISABLE_ATEXIT_HACK#includestaticfloatyear=0,day=0;voidinit(void){glClearColor(0.0,0.0,0.0,0.0);glShadeModel(GL_FLAT);//设定着色模式，使用图元中某个顶点的颜色来渲染整个图元。}voiddisplay(void){glClear(GL_COLOR_BUFFER_BIT);glColor3f(0.0,1.0,0.0);glLoadIdentity();glPushMatrix();gluLookAt(0.0,0.0,5,0.0,0.0,0.0,0.0,1.0,0.0);//绘制太阳glRotatef((GLfloat)year,0.0,1.0,0.0);glutWireSphere(0.8,25,25);//绘制地球glRotatef((GLfloat)year,0.0,1.0,0.0);glTranslatef(2.0,0.0,0.0);glRotatef((GLfloat)day,0.0,1.0,0.0);glutWireSphere(0.2,20,20);//绘制月球glRotatef((GLfloat)year,0.0,1.0,0.0);glTranslatef(0.4,0.0,0.0);glRotatef((GLfloat)day,0.0,1.0,0.0);glutWireSphere(0.1,15,15);//glutWireCube(2.0);glPopMatrix();glutSwapBuffers();}voidspinDisplay(void){year=year+0.03;if(year>360.0){year=year-360.0;}}day=day+0.06;if(day>360.0){day=day-360.0;}glutPostRedisplay();voidreshape(intw,inth){glViewport(0,0,(GLsizei)w,(GLsizei)h);//函数作用：用一个视景体截取图像//glFrustum(-1.0,1.0,-1.0,1.0,-1.0,1.0);glMatrixMode(GL_PROJECTION);//mode指定哪一个矩阵堆栈是下一个矩阵操作的目标,参数表示接下来要进行投影相关的操作glLoadIdentity();//设置当前变化矩阵为单位矩阵；单位矩阵就是对角线上都是1，其余元素皆为0的矩阵。然后复位//glOrtho(-3.0,3.0,-3.0,3.0,-3.0,3.0);glFrustum(-1.0,1.0,-1.0,1.0,1.5,20);glMatrixMode(GL_MODELVIEW);//进行视景相关的操作//glLoadIdentity();}intmain(intargc,char**argv){

}glutInit(glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);glutInitWindowSize(600,600);glutInitWindowPosition(50,50);glutCreateWindow(argv[0]);init();glutDisplayFunc(display);glutReshapeFunc(reshape);glutIdleFunc(spinDisplay);glutMainLoop();return0;2，采用opengl材质、光照技术完成一个在小盒内的运动小球，要求小球作为移动光源，观测运行效果。代码：staticintspin=0;voidinit(void){}voiddisplay(void){glPushMatrix();//光源与WireCube模型glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);glPushMatrix();gluLookAt(0.0,0.0,5.0,0.0,0.0,0.0,0.0,1.0,0.0);//效果和glTranslatef(0.0,GLfloatposition[]={0.0,0.0,1.5,1.0};glEnable(GL_DEPTH_TEST);glClearColor(0.0,0.0,0.0,0.0);glShadeModel(GL_SMOOTH);glEnable(GL_LIGHTING);glEnable(GL_LIGHT0);//这里使用了LIGHT0的默认值0.0,-5.0);一样}glRotated((GLdouble)spin,1.0,0.0,0.0);//同时旋转光源以及WireCubeglLightfv(GL_LIGHT0,GL_POSITION,position);//光源是几何物体，通过ModelView变换可以移动旋转它glTranslated(0.0,0.0,1.5);glDisable(GL_LIGHTING);glColor3f(0.0,1.0,1.0);glutSolidSphere(0.1,40,40);//WireCube模拟代表光源的位置glEnable(GL_LIGHTING);glPopMatrix();glutSolidTorus(0.28,1.5,8,60);glPopMatrix();glFlush();voidreshape(intw,inth){}voidmouse(intbutton,intstate,intx,inty){switch(button){caseGLUT_LEFT_BUTTON:}if(state==GLUT_DOWN){}break;break;spin=(spin+5)%360;glutPostRedisplay();glViewport(0,0,(GLsizei)w,(GLsizei)h);glMatrixMode(GL_PROJECTION);glLoadIdentity();gluPerspective(40.0,(GLfloat)w/(GLfloat)h,1.0,20.0);glMatrixMode(GL_MODELVIEW);glLoadIdentity();default:}voidIdle(){}voidkeyboard(unsignedcharkey,intx,inty){}圆环代替箱子，小球上下运动作为光源switch(key){case27:}exit(0);break;s