opengl 行星系统

#include <gl/glut.h>static int year=0,day=0;void init(){glClearColor(0.0f,0.0f,0.0f,0.0f);glShadeModel(GL_FLAT);}void display(){glClear(GL_COLOR_BUFFER_BIT);glColor3f(1.0f,1.0f,1.0f);glPushMatrix();glutWireSphere(1.0,20,16);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(0.2,10,8);glTranslatef(1.0,0.0,0.0);glRotatef((GLfloat)day,0.0,2.0,0.0);//此处添加了一个行星glutWireSphere(0.2,10,8);glPopMatrix();glutSwapBuffers();}void reshape(int w,int h){glViewport(0,0,(GLsizei)w,(GLsizei)h);glMatrixMode(GL_PROJECTION);glLoadIdentity();gluPerspective(60.0,(GLfloat)w/(GLfloat)h,1.0,20.0);glMatrixMode(GL_MODELVIEW);glLoadIdentity();gluLookAt(0.0,0.0,5.0,0.0,0.0,0.0,0.0,5.0,0.0);}void keyboard(unsigned char key,int x,int y){switch(key){case 'd':day=(day+10)%360;glutPostRedisplay();break;case 'D':day=(day-10)%360;glutPostRedisplay();break;case 'y':year=(year+5)%360;glutPostRedisplay();break;case 'Y':year=(year-5)%360;glutPostRedisplay();break;}}void timer(int value){year=(year+5)%360;glutPostRedisplay();glutTimerFunc(33,timer,value);//注意必须再次调用，否则此函数只会出发一次。}int main(int argc,char** argv){glutInit(&argc,argv);glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);glutInitWindowSize(500,500);glutInitWindowPosition(100,100);glutCreateWindow("planet");init();glutDisplayFunc(display);glutReshapeFunc(reshape);glutKeyboardFunc(keyboard);glutTimerFunc(33,timer,1);//自己添加了一个timer用于使行星旋转glutMainLoop();return 0;}

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发布自:http://blog.csdn.net/weinyzhou/article/details/7765238