"""

Plot the same event in two camera displays showing the

different coordinate frames for camera coordinates.

"""

from ctapipe.instrument import CameraGeometry

from ctapipe.visualization import CameraDisplay

import matplotlib.pyplot as plt

from ctapipe.coordinates import EngineeringCameraFrame

from ctapipe.image.toymodel import Gaussian

import astropy.units as u

def main():

fig, axs = plt.subplots(1, 2, constrained_layout=True, figsize=(6, 3))

model = Gaussian(0 * u.m, 0.1 * u.m, 0.3 * u.m, 0.05 * u.m, 25 * u.deg)

cam = CameraGeometry.from_name("FlashCam")

image, *_ = model.generate_image(cam, 2500)

CameraDisplay(cam, ax=axs[0], image=image)

CameraDisplay(

cam.transform_to(EngineeringCameraFrame()), ax=axs[1], image=image,

)

axs[0].set_title("CameraFrame")

axs[1].set_title("EngineeringCameraFrame")

plt.show()

if __name__ == "__main__":

main()