/***********************************************************************

Copyright (C) 1991 Dean Rubine

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License. See ../COPYING for
the full agreement.

**********************************************************************/

/*
	$Disclaimer: 
 * Permission to use, copy, modify, and distribute this software and its 
 * documentation for any purpose is hereby granted without fee, 
 * provided that the above copyright notice appear in all copies and that 
 * both that copyright notice, this permission notice, and the following 
 * disclaimer appear in supporting documentation, and that the names of 
 * IBM, Carnegie Mellon University, and other copyright holders, not be 
 * used in advertising or publicity pertaining to distribution of the software 
 * without specific, written prior permission.
 * 
 * IBM, CARNEGIE MELLON UNIVERSITY, AND THE OTHER COPYRIGHT HOLDERS 
 * DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT 
 * SHALL IBM, CARNEGIE MELLON UNIVERSITY, OR ANY OTHER COPYRIGHT HOLDER 
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 *  $
*/


#define	MAXPOINTS	3
#define	NOT_A_POINT	(-9999)

typedef struct {
	int	x, y;
} Point;

struct object {
	ObjectType	type;
	int		state;
	Point		point[MAXPOINTS];
	char		*text;
	Set		subobjects;
	char		highlight;
};

void	Erase(), Draw();
void	EraseOn(), EraseOff();

void	LineDraw();
void	LineTransform();
int	LineDistance();

void	RectDraw();
void	RectTransform();
int	RectDistance();

void	TextDraw();
void	TextTransform();
int	TextDistance();

void	CircleDraw();
void	CircleTransform();
int	CircleDistance();

void	SetDraw();
void	SetTransform();
int	SetDistance();

Bool	AlwaysOK(), AlwaysBad(), VlinePoint();

extern struct dope {
	ObjectType	type;
	char		*name;
	int		npoints;
	Bool		(*point)();
	void		(*draw)();
	void		(*transform)();
	int		(*distance)();  /* actually distance squared */
} dope[];