public void Render()
{
Gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);
_renderer.DrawSprite(_testSprite); //绘制精灵
Gl.glPushMatrix(); //矩阵压栈
double rdiu = (time_caculate / 1) * angle_speed; //每秒转动角度： angle_speed
Vector vector = _testSprite2.GetCenter();
Gl.glTranslated(vector.X, vector.Y, 0); //坐标移动到目标位置
Gl.glRotated(rdiu - 90, 0, 0, 1); //旋转
Gl.glTranslated(-vector.X, -vector.Y, 0); //坐标原点重置回去
_renderer.DrawSprite(_testSprite2);
int g = _testSprite2.Texture.ID;
Gl.glPopMatrix(); //矩阵出栈
_renderer.DrawSprite(_testSprite3);
_renderer.DrawSprite(_testSprite4);
_renderer.DrawSprite(_testSprite5);
// Gl.glFlush();
Gl.glFinish();
}
