opengl项目一实验报告

Opengl项目一学院1计算机班级:0421002日期:10-31学号2010212010姓名陈烨烽成绩一、题目分析利用OpenGL绘制一个简单的场景–包含球、正方形、网格数据–交互操作：平移、缩放、旋转–可以使用不同的灯光•项目1作业上交内容项目作交内容–代码–报告•简要介绍项目的开发情况•场景介绍，不同的场景要有不同的图支持•操作介绍，不同的操作要有操作后的图支持•灯光介绍，不同的灯光要有不同灯光下的图支持对GL的理解二、场景介绍开始：开灯：旋转：移动：放大：缩小：三、代码#include"stdafx.h"int_tmain(intargc,_TCHAR*argv[]){ return0;}#include<windows.h>#include<GL/glut.h> floatm_xRotation; floatm_yRotation; floatm_xTranslation; floatm_yTranslation; floatm_zTranslation; floatm_xScaling; floatm_yScaling; floatm_zScaling; staticintcpt1=45;//定义自转角度staticintcpt2=45;//定义公转的?度 BOOLbColorMaterial=FALSE;//颜色跟踪Á模式voidInitGeometry(){ m_xRotation=0.0;//初始时不旋转也不平移除了沿轴也不缩放 m_yRotation=0.0; m_xTranslation=3.0; m_yTranslation=4.0; m_zTranslation=-1.0; m_xScaling=1.0; m_yScaling=1.0; m_zScaling=1.0;}voidSetupRC(void){ //全局光照系数GLfloatglobel_ambient[]={0.1,0.1,0.2,0.0};//打开全局光照?glLightModelfv(GL_LIGHT_MODEL_AMBIENT,globel_ambient); glEnable(GL_LIGHTING); glEnable(GL_DEPTH_TEST); glClearColor(0.0f,0.0f,0.0f,1.0f); }voidChangeSize(GLsizeiw,GLsizeih){ if(h==0) h=1; glViewport(0,0,w,h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if(w<=h) glOrtho(-1.5,1.5,-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-10.0,10.0); else glOrtho(-1.5*(GLfloat)w/(GLfloat)h,1.5*(GLfloat)w/(GLfloat)h,-1.5,1.5,-10.0,10.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity();gluPerspective(60.0,(GLfloat)w/(GLfloat)h,1.0,20.0);//重置坐标系统使投影变换复位?glMatrixMode(GL_MODELVIEW);glLoadIdentity();//定义视景转换前3个参数表示视点的空间位置中间个参数表示参考点的空间位置最后//个参数表示向上向量的方向gluLookAt(0.0,0.0,5.0,0.0,0.0,0.0,0.0,1.0,0.0);}voidRenderScene(void){ floati; glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); //glLoadIdentity(); glPushMatrix(); glTranslatef(0.0,0.0,0.0); glRotatef((GLfloat)cpt1,-1.0,1.0,1.0);//ball自转轴的偏转角度 glutSolidSphere(0.6,40,40); glPopMatrix(); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE); glRectf(-1.0,-1.0,1.0,1.0);//正方形 for(i=-100.0f;i<=100.0f;i=i+0.2f) { glBegin(GL_LINES); glVertex2f(i,-100.0f); glVertex2f(i,100.0f); glEnd(); glBegin(GL_LINES); glVertex2f(-100.0f,i); glVertex2f(100.0f,i); glEnd(); } //开启双面光照? glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);glutSwapBuffers();//刷新命令缓冲区 glFlush();} voiddisplay(intvalue){ switch(value) { case1:{ GLfloatmat_ambient[]={0.2f,0.2f,0.2f,1.0f}; GLfloatmat_diffuse[]={1.0f,0.6f,1.0f,1.0f}; GLfloatmat_specular[]={0.8f,1.0f,1.0f,1.0f}; GLfloatmat_shininess[]={50.0f}; GLfloatmat_emission[]={0.3f,0.2f,0.1f,0.0f}; GLfloatlight0_diffuse[]={0.8f,0.1f,0.4f,1.0f}; GLfloatlight0_position[]={1.0f,0.8f,0.5f,0.0f}; GLfloatlight0_ambient[]={0.2f,0.2f,0.2f,1.0f}; GLfloatlight0_specular[]={1.0f,0.6f,0.6f,1.0f}; GLfloatlight1_ambient[]={0.2f,0.5f,0.2f,1.0f}; GLfloatlight1_specular[]={1.0f,0.6f,0.6f,1.0f}; GLfloatlight1_diffuse[]={0.3f,1.0f,0.1f,1.0f}; GLfloatlight1_position[]={-3.0f,-3.0f,3.0f,1.0f}; GLfloatspot_direction[]={1.0f,1.0f,-2.0f}; //定义材质属性? glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient); glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse); glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular); glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess); glMaterialfv(GL_FRONT,GL_EMISSION,mat_emission); //light0为漫反射的READ色点光源 glLightfv(GL_LIGHT0,GL_DIFFUSE,light0_diffuse); glLightfv(GL_LIGHT0,GL_POSITION,light0_position); glLightfv(GL_LIGHT0,GL_AMBIENT,light0_ambient); glLightfv(GL_LIGHT0,GL_SPECULAR,light0_specular); //light1为BLUE聚光光源 glLightfv(GL_LIGHT1,GL_AMBIENT,light1_ambient); glLightfv(GL_LIGHT1,GL_SPECULAR,light1_specular); glLightfv(GL_LIGHT1,GL_DIFFUSE,light1_diffuse); glLightfv(GL_LIGHT1,GL_POSITION,light1_position); glLightf(GL_LIGHT1,GL_SPOT_CUTOFF,30.0); glLightfv(GL_LIGHT1,GL_SPOT_DIRECTION,spot_direction); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_LIGHT1); glEnable(GL_DEPTH_TEST); break;} //开灯 case2:{glEnable(GL_LIGHTING); glDisable(GL_LIGHT0); glDisable(GL_LIGHT1); glEnable(GL_DEPTH_TEST); break;} //关灯 case3:{ glTranslatef(2.0,1.0,1.0); break; //移动 } case4:{ glScalef(2.0,2.0,2.0); break; } //放大 case5:{ glScalef(0.1,0.1,0.1); break; } //缩小}}voidright_menu(intid){switch(id){ case1:display(1); break; case2:display(2); break; case3: display(3); break; case4: display(4); break; case5: display(5); break; default: break; } glutPostRedisplay();}voidmain(void){ glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB); glutInitWindowSize(600,400); glutInitWindowPosition(300,300); glutCreateWindow("opengl项目一"); glutDisplayFunc(RenderScene);glutReshapeFunc(ChangeSize); glutCreateMenu(right_menu);glutAddMenuEntry("开灯",1);glutAddMenuEntry("灯",2); glutAddMenuEntry("移动",3); glutAddMenuEntry("放大",4);