function scr_inverse_perspective(arg0, arg1, arg2, arg3 = 100)
{
    return scr_inverse_perspective_ext(arg0, arg1, arg2, camerax() + (surface_get_width(application_surface) / 2), cameray() + (surface_get_height(application_surface) / 2), arg3);
}

function scr_inverse_perspective_ext(arg0, arg1, arg2, arg3, arg4, arg5 = 100)
{
    var _vec3 = new Vector3(arg0, arg1, arg2);
    if ((arg5 + arg2) == 0 || arg5 == arg2)
    {
        if ((arg5 + arg2) == 0)
            _vec3.z = 0;
        else
            _vec3.z = arg5 / arg2;
        return _vec3;
    }
    else if (arg2 == 0)
    {
        arg2 = 0.000001;
    }
    _vec3.x = ((arg0 - arg3) / (arg5 / arg2)) + arg3;
    _vec3.y = ((arg1 - arg4) / (arg5 / arg2)) + arg4;
    _vec3.z = arg5 / arg2;
    return _vec3;
}