#include
float fEarth = 2.0f; //地球绕太阳的旋转角度
float fMoon = 24.0; //月球绕地球的旋转角度
void Init ()
{
glEnable (GL_DEPTH_TEST); //启用深度测试
glClearColor(0.0f,0.0f,0.0f,0.8f); //背景为黑色
}
void Reshape (int w, int h)
{
if (0==h)
h=1;
glViewport (0, 0, w, h); //设置视区尺寸
glMatrixMode (GL_PROJECTION); //指定当前操作投影矩阵堆栈
glLoadIdentity (); //重置投影矩阵
//指定透视投影的观察空间
gluPerspective (45.0f, (float)w / (float)h, 1.0, 1000.0f);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
}
void Display (void)
{
//清除颜色和深度缓冲区
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_MODELVIEW); //指定当前操作模型视图矩阵堆栈
glLoadIdentity (); //重置模型视图矩阵
glTranslatef (0.0f, 0.0f, -500.0f); //将图形沿着z轴负方向移动
glColor3f (1.0f, 0.0f, 0.0f); //画太阳
glutSolidSphere (50.0f, 20, 20);
glColor3f (0.0f, 0.0f, 1.0f);
glRotatef (23.27, 0.0, 0.0, 1.0); //地球与太阳的黄赤夹角
glRotatef (fEarth, 0.0f, 1.0f, 0.0f);
glTranslatef (200.0f, 0.0f, 0.0f);
glutSolidSphere (20.0f, 20, 20); //画地球
glPopMatrix ();
glPopMatrix ();
glRotatef (6.0f, 1.0f, 1.0f, 1.0f);
glRotatef (fMoon, 0.0f, 1.0f, 0.0f);
glColor3f (1.0f, 1.0f, 0.0f);
glTranslatef (30.0f, 0.0f, 0.0f);
glutSolidSphere (5.0f, 20, 20); //画月球
glLoadIdentity ();
glFlush ();
glutSwapBuffers ();
}
void myIdle (void) //在闲暇的时间里调用，达到动画的效果
{
fEarth += 0.03f; //增加旋转步长，产生动画效果
if (fEarth > 360.0f)
fEarth = 2.0f;
fMoon += 0.24f;
if (fMoon > 360.0f)
fMoon = 24.0f;
Display ();
}
int main (int argc, char *argv[])
{
glutInit(&argc, argv);
//窗口使用RGB颜色，双缓存和深度缓存
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowPosition (100,100);
glutInitWindowSize (600,400);
glutCreateWindow ("太阳系动画");
glutReshapeFunc (Reshape);
glutDisplayFunc (Display);
glutIdleFunc (&myIdle);
Init ();
glutMainLoop ();
return 0;
}
#include
float fEarth = 2.0f; //地球绕太阳的旋转角度
float fMoon = 24.0; //月球绕地球的旋转角度
void Init ()
{
glEnable (GL_DEPTH_TEST); //启用深度测试
glClearColor(0.0f,0.0f,0.0f,0.8f); //背景为黑色
}
void Reshape (int w, int h)
{
if (0==h)
h=1;
glViewport (0, 0, w, h); //设置视区尺寸
glMatrixMode (GL_PROJECTION); //指定当前操作投影矩阵堆栈
glLoadIdentity (); //重置投影矩阵
//指定透视投影的观察空间
gluPerspective (45.0f, (float)w / (float)h, 1.0, 1000.0f);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
}
void Display (void)
{
//清除颜色和深度缓冲区
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode (GL_MODELVIEW); //指定当前操作模型视图矩阵堆栈
glLoadIdentity (); //重置模型视图矩阵
glTranslatef (0.0f, 0.0f, -500.0f); //将图形沿着z轴负方向移动
glColor3f (1.0f, 0.0f, 0.0f); //画太阳
glutSolidSphere (50.0f, 20, 20);
glColor3f (0.0f, 0.0f, 1.0f);
glRotatef (23.27, 0.0, 0.0, 1.0); //地球与太阳的黄赤夹角
glRotatef (fEarth, 0.0f, 1.0f, 0.0f);
glTranslatef (200.0f, 0.0f, 0.0f);
glutSolidSphere (20.0f, 20, 20); //画地球
glPopMatrix ();
glPopMatrix ();
glRotatef (6.0f, 1.0f, 1.0f, 1.0f);
glRotatef (fMoon, 0.0f, 1.0f, 0.0f);
glColor3f (1.0f, 1.0f, 0.0f);
glTranslatef (30.0f, 0.0f, 0.0f);
glutSolidSphere (5.0f, 20, 20); //画月球
glLoadIdentity ();
glFlush ();
glutSwapBuffers ();
}
void myIdle (void) //在闲暇的时间里调用，达到动画的效果
{
fEarth += 0.03f; //增加旋转步长，产生动画效果
if (fEarth > 360.0f)
fEarth = 2.0f;
fMoon += 0.24f;
if (fMoon > 360.0f)
fMoon = 24.0f;
Display ();
}
int main (int argc, char *argv[])
{
glutInit(&argc, argv);
//窗口使用RGB颜色，双缓存和深度缓存
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowPosition (100,100);
glutInitWindowSize (600,400);
glutCreateWindow ("太阳系动画");
glutReshapeFunc (Reshape);
glutDisplayFunc (Display);
glutIdleFunc (&myIdle);
Init ();
glutMainLoop ();
return 0;
}