    deferred class
    	EV_PROJECTION_ROUTINES

    General
    	cluster: interface
    	description: "Abstract class for figure projection routines."
    	keywords: "projector, events, routines"

    Ancestors
    	EV_FIGURE_DRAWING_ROUTINES*

    Queries
    	is_projecting: BOOLEAN

    Commands
    	draw_figure_arc (arc: EV_FIGURE_ARC)
    	draw_figure_dot (dot: EV_FIGURE_DOT)
    	draw_figure_ellipse (ellipse: EV_FIGURE_ELLIPSE)
    	draw_figure_equilateral (eql: EV_FIGURE_EQUILATERAL)
    	draw_figure_line (line: EV_FIGURE_LINE)
    	draw_figure_picture (picture: EV_FIGURE_PICTURE)
    	draw_figure_pie_slice (slice: EV_FIGURE_PIE_SLICE)
    	draw_figure_polygon (polygon: EV_FIGURE_POLYGON)
    	draw_figure_polyline (line: EV_FIGURE_POLYLINE)
    	draw_figure_rectangle (rectangle: EV_FIGURE_RECTANGLE)
    	draw_figure_rounded_rectangle (f: EV_FIGURE_ROUNDED_RECTANGLE)
    	draw_figure_star (star: EV_FIGURE_STAR)
    	draw_figure_text (text_figure: EV_FIGURE_TEXT)
    	project
    	register_figure (a_figure: EV_FIGURE; a_routine: PROCEDURE [ANY, TUPLE [EV_FIGURE]])