opengl_sun.rar_open_open gl地球_模拟 可视化

#include <GL/glut.h> //#include <windows.h> //#include <GL/gl.h> //#include <GL/glaux.h> //#include <math.h> static int day = 200; void myDisplay(void) { glEnable(GL_DEPTH_TEST); glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(75, 1, 1, 40000000);//75 透视度数，1,1,2倍太阳到地球的距离 glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(0, -20000000, 20000000, 0, 0, 0, 0, 0, 1); //绘制红色的太阳 glColor3f(1.0f, 0.0f, 0.0f); glutSolidSphere(6960000, 20, 20); //绘制蓝色的地球 glColor3f(0.0f, 0.0f, 1.0f); glRotatef(day/360.0*360.0, 0.0f, 0.0f, -1.0f); glTranslatef(15000000, 0.0f, 0.0f); glutSolidSphere(1594500, 20, 20); // 绘制黄色的“月亮” glColor3f(1.0f, 1.0f, 0.0f); glRotatef(day/30.0*360.0 - day/360.0*360.0, 0.0f, 0.0f, -1.0f); glTranslatef(3800000, 0.0f, 0.0f); glutSolidSphere(434500, 20, 20); glFlush(); glutSwapBuffers(); } void myIdle(void) { /* 新的函数，在空闲时调用，作用是把日期往后移动一天并重新绘制，达到动画效果 */ ++day; if( day >= 360 ) day = 0; myDisplay(); } int main(int argc, char *argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE); glutInitWindowPosition(100, 100); glutInitWindowSize(800, 800); glutCreateWindow("地球轨道图"); //myDisplay; glutDisplayFunc(&myDisplay); glutIdleFunc(&myIdle); glutMainLoop(); return 0; }