Same as controller_draw_arc(), but connects the end points with a straight line.
controller_draw_chord(arc_list, start_angle, end_angle, image, pixel_width)
chord_list: Two points to define the bounding box. Sequence of [(x0, y0), (x1, y1)], where x1 >= x0 and y1 >= y0. start_angle: Starting angle, in degrees. Angles are measured from 3 o’clock, increasing clockwise. end_angle: Ending angle, in degrees. image: image object created from create_image_canvas() pixel_width: optional parameter that is the line width, in pixels. default value is 1