Drawing and Filling Arcs

• pxl-prim-arcs-draw_arc: draw_arc/[7,8]
• pxl-prim-arcs-draw_arcs: draw_arcs/[2,3]
• pxl-prim-arcs-fill_arc: fill_arc/[7,8]
• pxl-prim-arcs-fill_arcs: fill_arcs/[2,3]