Answers

Exercise A.

def get_position(self):
    position = pygame.Vector3(self.MVM[0, 3], 
                              self.MVM[1, 3], 
                              self.MVM[2, 3])
    return position
def get_scale(self):
    sx = pygame.Vector3(self.MVM[0, 0], self.MVM[1, 0], 
                        self.MVM[2, 0])
    sy = pygame.Vector3(self.MVM[0, 1], self.MVM[1, 1], 
                        self.MVM[2, 1])
    sz = pygame.Vector3(self.MVM[0, 2], self.MVM[1, 2], 
                        self.MVM[2, 2])
    return pygame.Vector3(sx.magnitude(), sy.magnitude(), 
                          sz.magnitude())
def get_rotation(self):
    scale = self.get_scale()
    rotation = np.identity(4)
    rotation[0, 0] = self.MVM[0, 0] / scale.x
    rotation[0, 1] = self.MVM[0, 1] / scale.x
    rotation[0, 2] = self.MVM[0, 2] / scale.x
    rotation[1, 0] = self.MVM[1, 0] / scale.y
    rotation[1, 1] = self.MVM[1, 1] / scale.y
    rotation[1, 2] = self.MVM[1, 2] / scale.y
    rotation[2, 0...