/*
    This file is part of patharea, a Filter plugin for Adobe Illustrator
    Copyright (C) 1995-2005 Toby Thain, toby@telegraphics.com.au

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by  
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License  
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <stdio.h>

#include "AIBlock.h"
#include "AIFilter.h"
#include "AIMatchingArt.h"
#include "AIFixedMath.h"
#include "AIArt.h"
#include "AIPath.h"
#include "AIMdMemory.h"
#include "ADMBasic.h"
//#include "ADMDialog.h"

// ---- API-version dependent stuff

#ifdef kAIRealMathSuite // AI 8.0 or later
	#include "AIRealMath.h"
	
	typedef AIRealPoint pt;
	typedef AIRealRect AIRECT;

	#define ONECONSTANT kAIRealOne
	#define FLT // convert component of pt to floating point (null op)
	#define LENGTH sRealMath->AIRealLength
	#define POINTCLOSE sRealMath->AIRealPointClose
  #define POINTEQUAL sRealMath->AIRealPointEqual
#else
	typedef AIFixedPoint pt;
	typedef AIFixedRect AIRECT;

	#define ONECONSTANT kFixedOne 
	#define FLT sMath->FixedToFloat 	// convert component of pt to floating point
	#define LENGTH sMath->FixedLength
  #define POINTCLOSE sMath->FixedPointClose
  #define POINTEQUAL sMath->FixedPointEqual
#endif


// CURVE_TOLERANCE is the square of the maximum allowable distance
// from midpoint between curve endpoints (c0-c3),
// and the actual halfway point on Bezier segment (z3).
// Beziers will be subdivided (no more than MAX_STEPS times) until this tolerance is reached 
#define CURVE_TOLERANCE (ONECONSTANT/100)

#define MAX_DEPTH 16 // recursion limit on curve subdivision

// ----- prototypes
AIErr acquire_suites( SPMessageData *m );
AIErr release_suites( SPMessageData *m );
AIErr plugin_startup ( SPInterfaceMessage *im );
AIErr plugin_shutdown( SPInterfaceMessage *im );
AIErr plugin_about( SPInterfaceMessage *im );
void mid(pt *a,pt *b,pt *c);
void divide_curve(pt c[],pt z[]);
void docurve(SPMessageData *m, pt c[],int corner,int depth);
AIErr do_art( SPMessageData *m, AIArtHandle path );
AIErr filter_go( AIFilterMessage *fm );