def heading_toward(self, to_pixel: Pixel_xy):
""" The heading to face from the from_pixel to the to_pixel """
# Make the default heading 0 if from_pixel == to_pixel.
if self == to_pixel:
return 0
delta_x = to_pixel.x - self.x
delta_y = to_pixel.y - self.y
new_heading = utils.dxdy_to_heading(delta_x, delta_y, default_heading=0)
return new_heading
def average_of_headings(self, agent_set, fn):
"""
fn extracts a heading from an agent. This function returns the average of those headings.
Cannot be static because fn may refer to self.
agent_set may not be all the agents. So it must be passed as an argument.
"""
# dx and dy are the x and y components of traveling one unit in the heading direction.
dx = mean([utils.dx(fn(agent)) for agent in agent_set])
dy = mean([utils.dy(fn(agent)) for agent in agent_set])
return utils.dxdy_to_heading(dx, dy, default_heading=self.heading)