def compute_matrices(self):
rotation_matrix = quaternion_to_rotation_matrix(self.orientation)
dp = np.linalg.norm(self.position - self.focus) * rotation_matrix[2]
self.position = dp + self.focus
self.up = rotation_matrix[1]
self.view_matrix = get_lookat_matrix(self.position, self.focus,
self.up)
self.projection_matrix = self.proj_func(self.fov, self.aspect_ratio,
self.near_plane,
self.far_plane)
def update_orientation(self, start_x, start_y, end_x, end_y):
self.orientation = update_orientation(self.orientation, start_x,
start_y, end_x, end_y)
rotation_matrix = quaternion_to_rotation_matrix(self.orientation)
dp = np.linalg.norm(self.position - self.focus) * rotation_matrix[2]
self.position = dp + self.focus
self.up = rotation_matrix[1]
self.view_matrix = get_lookat_matrix(self.position, self.focus,
self.up)
self.projection_matrix = self.proj_func(self.fov, self.aspect_ratio,
self.near_plane,
self.far_plane)