为什么我的OpenGL程序只输出一个白色背景的窗口而没有图形呢?
程序源代码:#include"gl/glut.h"staticintday=200;//day的变化:从0到359voidDisplay(void){glEnable(G...
程序源代码:
#include "gl/glut.h"
static int day = 200; // day 的变化:从 0 到 359
void Display(void)
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(1.0,0.0,0.0,0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(75, 1, 1, 400000000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, -200000000, 200000000, 0, 0, 0, 0,
0, 1);
// 绘制红色的“太阳”
glColor3f(1.0f, 0.0f, 0.0f);
glutSolidSphere(69600000, 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(150000000, 0.0f, 0.0f);
glutSolidSphere(15945000, 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(38000000, 0.0f, 0.0f);
glutSolidSphere(4345000, 20, 20);
glFlush();
}
void main(int argc,char* argv[])
{
glutInit(&argc,argv); //初始化OpenGL
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); //设置显示模式
glutInitWindowSize(600,480);//设置出现的窗口的大小
glutCreateWindow("太阳系");//创建窗口
glutDisplayFunc(Display);//注册一个绘图函数
glutMainLoop(); //进入OpenGL主循环
} 展开
#include "gl/glut.h"
static int day = 200; // day 的变化:从 0 到 359
void Display(void)
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(1.0,0.0,0.0,0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(75, 1, 1, 400000000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0, -200000000, 200000000, 0, 0, 0, 0,
0, 1);
// 绘制红色的“太阳”
glColor3f(1.0f, 0.0f, 0.0f);
glutSolidSphere(69600000, 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(150000000, 0.0f, 0.0f);
glutSolidSphere(15945000, 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(38000000, 0.0f, 0.0f);
glutSolidSphere(4345000, 20, 20);
glFlush();
}
void main(int argc,char* argv[])
{
glutInit(&argc,argv); //初始化OpenGL
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); //设置显示模式
glutInitWindowSize(600,480);//设置出现的窗口的大小
glutCreateWindow("太阳系");//创建窗口
glutDisplayFunc(Display);//注册一个绘图函数
glutMainLoop(); //进入OpenGL主循环
} 展开
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