indexing
	description: "An ellipse figure. See EV_FIGURE_ELLIPTIC"
	status: "See notice at end of class."
	keywords: "figure, ellipse, circle"
	date: "$Date$"
	revision: "$Revision$"

class
	EV_MODEL_ELLIPSE

inherit
	EV_MODEL_CLOSED
		undefine
			point_count,
			default_create,
			bounding_box
		end
		
	EV_MODEL_ELLIPTIC

create
	default_create,
	make_with_positions,
	make_with_points

feature -- Events

	position_on_figure (ax, ay: INTEGER): BOOLEAN is
			-- Is (`ax', `ay') on this figure?
		local
			l_point_array: like point_array
			p0, p1: EV_COORDINATE
			r1, r2, cx, cy, p0x, p0y: DOUBLE	
		do
			l_point_array := point_array
			p0 := l_point_array.item (0)
			p1 := l_point_array.item (1)
			p0x := p0.x_precise
			p0y := p0.y_precise
			cx := (p0x + p1.x_precise) / 2
			cy := (p0y + p1.y_precise) / 2
			
			r1 := (cx - p0x).abs
			r2 := (cy - p0y).abs
			
			Result := point_on_ellipse (ax, ay, cx, cy, r1, r2)	
		end

end -- class EV_MODEL_ELLIPSE

--|----------------------------------------------------------------
--| EiffelVision2: library of reusable components for ISE Eiffel.
--| Copyright (C) 1985-2004 Eiffel Software. All rights reserved.
--| Duplication and distribution prohibited.  May be used only with
--| ISE Eiffel, under terms of user license.
--| Contact Eiffel Software for any other use.
--|
--| Interactive Software Engineering Inc.
--| dba Eiffel Software
--| 356 Storke Road, Goleta, CA 93117 USA
--| Telephone 805-685-1006, Fax 805-685-6869
--| Contact us at: http://www.eiffel.com/general/email.html
--| Customer support: http://support.eiffel.com
--| For latest info on our award winning products, visit:
--|	http://www.eiffel.com
--|----------------------------------------------------------------