indexing
	description:
		"Abstract class for drawing figures."
	status: "See notice at end of class"
	keywords: "figure, primitives, drawing" 
	date: "$Date$"
	revision: "$Revision$"

deferred class
	EV_MODEL_DRAWING_ROUTINES

inherit
	EV_MODEL_MATH
		export
			{NONE} all
		end

feature -- Figure drawing

	draw_figure_arc (arc: EV_MODEL_ARC) is
			-- Draw standard representation of `arc' to canvas.
		require
			arc_not_void: arc /= Void
		deferred
		end
		
	draw_figure_rotated_arc (arc: EV_MODEL_ROTATED_ARC) is
			-- Draw standard representation of `arc' to canvas.
		require
			arc_not_void: arc /= Void
		deferred
		end


	draw_figure_dot (dot: EV_MODEL_DOT) is
			-- Draw standard representation of `dot' to canvas.
		require
			dot_not_void: dot /= Void
		deferred
		end

	draw_figure_ellipse (ellipse: EV_MODEL_ELLIPSE) is
			-- Draw standard representation of `ellipse' to canvas.
		require
			ellipse_not_void: ellipse /= Void
		deferred
		end
		
	draw_figure_rotated_ellipse (ellipse: EV_MODEL_ROTATED_ELLIPSE) is
			-- Draw standard representation of `ellipse' to canvas.
		require
			ellipse_not_void: ellipse /= Void
		deferred
		end
		
	draw_figure_equilateral (eql: EV_MODEL_EQUILATERAL) is
			-- Draw standard representation of `eql' to canvas.
		require
			eql_not_void: eql /= Void
		deferred
		end

	draw_figure_line (line: EV_MODEL_LINE) is
			-- Draw a standard representation of `line' to the canvas.
		require
			line_not_void: line /= Void
		deferred
		end

	draw_figure_picture (picture: EV_MODEL_PICTURE) is
			-- Draw standard representation of `picture' to canvas.
		require
			picture_not_void: picture /= Void
		deferred
		end

	draw_figure_pie_slice (slice: EV_MODEL_PIE_SLICE) is
			-- Draw standard representation of `slice' to canvas.
		require
			slice_not_void: slice /= Void
		deferred
		end

	draw_figure_rotated_pie_slice (slice: EV_MODEL_ROTATED_PIE_SLICE) is
			-- Draw standard representation of `slice' to canvas.
		require
			slice_not_void: slice /= Void
		deferred
		end

	draw_figure_polygon (polygon: EV_MODEL_POLYGON) is
			-- Draw standard representation of `polygon' to canvas.
		require
			polygon_not_void: polygon /= Void
		deferred
		end

	draw_figure_polyline (line: EV_MODEL_POLYLINE) is
			-- Draw standard representation of `polyline' to canvas.
		require
			line_not_void: line /= Void
		deferred
		end

	draw_figure_rectangle (rectangle: EV_MODEL_RECTANGLE) is
			-- Draw standard representation of `rectangle' to canvas.
		require
			rectangle_not_void: rectangle /= Void
		deferred
		end

	draw_figure_rounded_rectangle (f: EV_MODEL_ROUNDED_RECTANGLE) is
			-- Draw standard representation of `f' to canvas.
		require
			f_not_void: f /= Void
		deferred
		end

	draw_figure_star (star: EV_MODEL_STAR) is
			-- Draw standard representation of `star' to canvas.
		require
			star_not_void: star /= Void
		deferred
		end

	draw_figure_text (text_figure: EV_MODEL_TEXT) is
			-- Draw standard representation of `text_figure' to canvas.
		require
			text_figure_not_void: text_figure /= Void
		deferred
		end
		
	draw_figure_parallelogram (parallelogram: EV_MODEL_PARALLELOGRAM) is
			-- Draw standard representation of `parallelogram' to canvas.
		require
			parallelogram_not_void: parallelogram /= Void
		deferred
		end
		
	draw_figure_rounded_parallelogram (parallelogram: EV_MODEL_ROUNDED_PARALLELOGRAM) is
			-- Draw standard representation of `parallelogram' to canvas.
		require
			parallelogram_not_void: parallelogram /= Void
		deferred
		end
		

end -- class EV_MODEL_DRAWING_ROUTINES

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