def gluPerspective(fovY, aspect, zNear, zFar):
    """Set up a perspective projection matrix. 

    :param fovY: Specifies the field of view angle, in degrees, in the y direction. 
    :param aspect: Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height). 
    :param zNear: Specifies the distance from the viewer to the near clipping plane (always positive). 
    :param zFar: Specifies the distance from the viewer to the far clipping plane (always positive). 
    """
    pass
