Matrix();
glLoadIdentity();
gluOrtho2D(0, w, 0, h);
glScalef(1, -1, 1);
glTranslatef(0, -h, 0);
glMatrixMode(GL_MODELVIEW);
}
void resetPerspectiveProjection()
{
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
//光源的坐标变化
void SpecialKeys(int key, int x, int y)
{
if(key == GLUT_KEY_UP)
xRot-= 5.0f;
if(key == GLUT_KEY_DOWN)
xRot += 5.0f;
if(key == GLUT_KEY_LEFT)
yRot -= 5.0f;
if(key == GLUT_KEY_RIGHT)
yRot += 5.0f;
if(key > 356.0f)
xRot = 0.0f;
if(key < -1.0f)
xRot = 355.0f;
if(key > 356.0f)
yRot = 0.0f;
if(key < -1.0f)
yRot = 355.0f;
glutPostRedisplay();
}
//鼠标事件
void Mouse(int button,int state, int x, int y)
{
if (state == GLUT_DOWN)//鼠标按下
{
if (x<0)
{
//向左旋转
yRot -= 5.0f;
}else if (x>=0)
{
//向右旋转
yRot += 5.0f;
}else if (y>=0)
{
//向上旋转
xRot-= 5.0f;
}else if (y<0)
{
//向下旋转
xRot += 5.0f;
}
if(xRot> 356.0f)
xRot = 0.0f;
if(xRot < -1.0f)
xRot = 355.0f;
if(yRot > 356.0f)
yRot = 0.0f;
if(yRot < -1.0f)
yRot = 355.0f;
glutPostRedisplay();
}
}
//时间函数,定时刷新
void TimerFunction(int value)
{
display();
glutPostRedisplay();
glutTimerFunc(33,TimerFunction, 1);
}
//主函数
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (800, 600);
glutInitWindowPosition (100, 100);
glutCreateWindow("机器人 按W向前走 按s向后走 按a向左转 按d向右转 按p可以自行转动");
SetupRC();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutSpecialFunc(SpecialKeys);
glutMouseFunc(Mouse);
glutTimerFunc(33, TimerFunction, 1);
// glutIdleFunc(display);
glutMainLoop();
return 0;
}
|