DOOM-3-BFG/neo/swf/SWF_ShapeParser.h

/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code 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 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/
#ifndef __SWF_SHAPEPARSER_H__
#define __SWF_SHAPEPARSER_H__

/*
================================================
This class handles parsing and triangulating a shape
================================================
*/
class idSWFShapeParser {
public:
	idSWFShapeParser() { }
	void Parse( idSWFBitStream & bitstream, idSWFShape & shape, int recordType );
	void ParseMorph( idSWFBitStream & bitstream, idSWFShape & shape );
	void ParseFont( idSWFBitStream & bitstream, idSWFFontGlyph & shape );

private:
	bool extendedCount;
	bool rgba;
	bool morph;
	bool lineStyle2;

	struct swfSPEdge_t {
		uint16 v0;
		uint16 v1;
		uint16 cp;	// control point if this is a curve, 0xFFFF otherwise
	};
	struct swfSPMorphEdge_t {
		swfSPEdge_t start;
		swfSPEdge_t end;
	};
	struct swfSPLineLoop_t {
		bool hole;
		idList< uint16, TAG_SWF > vindex1;
		idList< uint16, TAG_SWF > vindex2;
	};
	struct swfSPDrawFill_t {
		swfFillStyle_t style;
		idList< swfSPMorphEdge_t, TAG_SWF > edges;
		idList< swfSPLineLoop_t, TAG_SWF > loops;
	};
	struct swfSPDrawLine_t {
		swfLineStyle_t style;
		idList< swfSPMorphEdge_t, TAG_SWF > edges;
	};
	idList< idVec2, TAG_SWF > verts;
	idList< swfSPDrawFill_t, TAG_SWF > fillDraws;
	idList< swfSPDrawLine_t, TAG_SWF > lineDraws;


private:
	void ParseShapes( idSWFBitStream & bitstream1, idSWFBitStream * bitstream2, bool swap );
	void ReadFillStyle( idSWFBitStream & bitstream );
	void ParseEdge( idSWFBitStream & bitstream, int32 & penX, int32 & penY, swfSPEdge_t & edge );
	void MakeLoops();
	void TriangulateSoup( idSWFShape & shape );
	void TriangulateSoup( idSWFFontGlyph & shape );
	int FindEarVert( const swfSPLineLoop_t & loop );
	void AddUniqueVert( idSWFShapeDrawFill & drawFill, const idVec2 & start, const idVec2 & end );

};

#endif // !__SWF_SHAPEPARSER_H__