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deferred class
	EV_PROJECTION_ROUTINES

General
	obsolete: "Use EV_MODEL_PROJECTION_ROUTINES instead. [2017-05-31]"
	cluster: interface
	description: "Abstract class for figure projection routines."
	keywords: "projector, events, routines"

Ancestors
	EV_FIGURE_DRAWING_ROUTINES*

Queries
	arc_cosine (v: REAL_64): REAL_64
	arc_sine (v: REAL_64): REAL_64
	arc_tangent (v: REAL_64): REAL_64
	between (n, a, b: INTEGER_32): BOOLEAN
	ceiling (v: REAL_64): REAL_64
	cosine (v: REAL_64): REAL_64
	dabs (v: REAL_64): REAL_64
	delta_x (angle: REAL_64; length: INTEGER_32): INTEGER_32
	delta_y (angle: REAL_64; length: INTEGER_32): INTEGER_32
	distance (x1, y1, x2, y2: INTEGER_32): INTEGER_32
	distance_from_line (x, y, x1, y1, x2, y2: INTEGER_32): INTEGER_32
	Euler: REAL_64
	exp (x: REAL_64): REAL_64
	floor (v: REAL_64): REAL_64
	is_projecting: BOOLEAN
	line_angle (x1, y1, x2, y2: INTEGER_32): REAL_64
	log (v: REAL_64): REAL_64
	log10 (v: REAL_64): REAL_64
	log_2 (v: REAL_64): REAL_64
	modulo (a, b: REAL_64): REAL_64
	Pi: REAL_64
	Pi_2: REAL_64
	Pi_4: REAL_64
	Pi_half: REAL_64
	Pi_half_times_three: REAL_64
	Pi_quater: REAL_64
	Pi_times_three: REAL_64
	Pi_times_two: REAL_64
	point_on_ellipse (x, y, xc, yc, r1, r2: INTEGER_32): BOOLEAN
	point_on_ellipse_boundary (x, y, xc, yc, r1, r2, width: INTEGER_32): BOOLEAN
	point_on_line (x, y, x1, y1, x2, y2, width: INTEGER_32): BOOLEAN
	point_on_polygon (x, y: INTEGER_32; points: ARRAY [EV_COORDINATE]): BOOLEAN
	point_on_rectangle (x, y, x1, y1, x2, y2: INTEGER_32): BOOLEAN
	point_on_segment (x, y, x1, y1, x2, y2, width: INTEGER_32): BOOLEAN
	sine (v: REAL_64): REAL_64
	sqrt (v: REAL_64): REAL_64
	Sqrt2: REAL_64
	tangent (v: REAL_64): REAL_64

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 [EV_FIGURE])



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