// 范例P140.cpp : Defines the entry point for the console application.// #include "stdafx.h"#include <gl/glut.h> void display(){ glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);     //清除所有像素  //材质设置  //四列之间的镜面反射色不同 GLfloat mat_specular[][4]={1.0,1.0,1.0,1.0, 0.0,0.0,0.0,1.0}; //四列之间的光洁度不同 GLfloat mat_shininess[3]={0,5,100}; //三行之间的环境光反射不同 GLfloat mat_ambient[][4]={0.0,0.0,0.0,1.0, 0.7,0.7,0.7,1.0, 0.8,0.8,0.2,1.0}; //散射光颜色全部相同 GLfloat mat_diffuse[]={0.1,0.5,0.8,1.0}; //第四列能够发光 GLfloat mat_emission[][4]={0.3,0.2,0.2,0.0, 0.0,0.0,0.0,1.0};  glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse); for(int i=0;i<3;i++) {  glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient[i]);  for(int j=0;j<4;j++)  {   if(j==0||j==4)    glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular[1]);   else    glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular[0]);   if(j==4)    glMaterialfv(GL_FRONT,GL_EMISSION,mat_emission[0]);   else    glMaterialfv(GL_FRONT,GL_EMISSION,mat_emission[1]);   glMaterialf(GL_FRONT,GL_SHININESS,mat_shininess[j%3]);   glPushMatrix();   glTranslatef(-3.75+j*2.5,3.0-i*2.5,0.0);   glutSolidSphere(1.0,16,16);   glPopMatrix();  } } glFlush();          //立即显示出来} void init(){ glClearColor(0.0,0.0,0.0,0.0);     //用黑色清除背景  GLfloat light_position[]={2.0,2.0,2.0,0.0}; GLfloat white_light[]={1.0,1.0,1.0,1.0}; GLfloat lmodel_ambient[]={0.1,0.1,0.1,1.0};  glShadeModel(GL_SMOOTH);  glPushMatrix(); glLightfv(GL_LIGHT0,GL_POSITION,light_position); glPopMatrix(); glLightfv(GL_LIGHT0,GL_DIFFUSE,white_light); glLightfv(GL_LIGHT0,GL_SPECULAR,white_light); //glLightModelfv(GL_LIGHT_MODEL_AMBIENT,lmodel_ambient);  glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST);}void reshape(int w,int h){ glViewport(0,0,(GLsizei)w,(GLsizei)h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if(w<=h)  glOrtho(-9,9,-9*(GLfloat)h/(GLfloat)w,9*(GLfloat)h/(GLfloat)w,-20.0,20.0); else  glOrtho(-9*(GLfloat)w/(GLfloat)h,9*(GLfloat)w/(GLfloat)h,-9,9,-20.0,20.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); }int main(int argc,char ** argv){ glutInit(&argc,argv); glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB); glutInitWindowSize(500,500);     //初始化窗口大小 glutInitWindowPosition(0,0);    //初始化窗口位置 glutCreateWindow("hello");      //创建标题为“hello”的窗口 init();           //调用初始化函数 glutDisplayFunc(display);      //注册回调函数 glutReshapeFunc(reshape); glutMainLoop();         //进入主循环处理事件 return 0;}

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