# Select model to use
model = Models.triangle
model_details = MODEL_DETAILS[model]
file_path = model_details[FileDetails.FILE_PATH]
camera_pos = model_details[FileDetails.CAMERA_POS]
light_source_pos = model_details[FileDetails.LIGHT_SOURCE_POS]
camera_direction = [0, 0, -1]
# Create model object
obj = Object(*read_off_file(file_path).values())
# Get camera coordinates
obj.get_camera_coords(camera_pos)
# Get face normals
obj.get_face_normals()
# Get View frustum
obj.get_view_frustum(camera_pos)
# Get Normalized Coords
obj.get_normalized_coords()
# Backface Detection
obj.backface_detection(camera_direction)
# Display some values
print(f"World Coords: {obj.vertices[Coords.WORLD][:3]}")
print(f"Camera Coords: {obj.vertices[Coords.CAMERA][:3]}")
print("---Face 1---")
for vertex_index, i in enumerate(obj.faces[Face.INDICES][0]):
