def update_grid(self):
"""
Update the grid axes and numbers if the camera position/rotation has changed.
"""
# Obtain the new camera settings
new_camera_pos = vector(self.__scene.camera.pos)
new_camera_axes = vector(self.__scene.camera.axis)
old_camera_pos = vector(self.camera_pos)
old_camera_axes = vector(self.camera_axes)
# Update old positions
self.camera_pos = new_camera_pos
self.camera_axes = new_camera_axes
distance_from_center = mag(self.__scene.center -
self.__scene.camera.pos)
new_scale = round(distance_from_center / 30.0, 1)
if not new_scale == self.__scale:
self.set_scale(new_scale)
# If camera is different to previous: update
if (not new_camera_axes.equals(old_camera_axes)) or (
not new_camera_pos.equals(old_camera_pos)):
# Update grid
self.__move_grid_objects()
update_grid_numbers(self.__focal_point,
self.grid_object[self.__labels_idx],
self.__num_squares, self.__scale, self.__is_3d,
self.__scene)
def __init_grid(self):
"""
Initialise the grid along the x, y, z axes.
"""
the_grid = self.__create_grid_objects()
self.grid_object[self.__planes_idx] = the_grid
# Update the labels instead of recreating them
update_grid_numbers(self.grid_object[self.__labels_idx], self.__relative_cam, self.__num_squares, self.__scene)
def update_grid(self):
"""
Update the grid axes and numbers if the camera position/rotation has changed.
"""
# Obtain the new camera settings
new_camera_pos = self.__scene.camera.pos
new_camera_axes = self.__scene.camera.axis
old_camera_pos = self.camera_pos
old_camera_axes = self.camera_axes
# If camera is different to previous: update
if (not new_camera_axes.equals(old_camera_axes)) or (
not new_camera_pos.equals(old_camera_pos)):
# Update old positions
self.camera_pos = new_camera_pos
self.camera_axes = new_camera_axes
# Update grid
self.__move_grid_objects()
update_grid_numbers(self.__focal_point,
self.grid_object[self.__labels_idx],
self.__num_squares, self.__scene)