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/*
* Copyright (C) 2003-2006 Gabest
* http://www.gabest.org
*
* 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, 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#pragma once
#include <vector>
#include "../SubPic/ISubPic.h"
#define PT_MOVETONC 0xfe
#define PT_BSPLINETO 0xfc
#define PT_BSPLINEPATCHTO 0xfa
class Rasterizer
{
bool fFirstSet;
CPoint firstp, lastp;
protected:
BYTE* mpPathTypes;
POINT* mpPathPoints;
int mPathPoints;
private:
int mWidth, mHeight;
typedef std::pair<unsigned __int64, unsigned __int64> tSpan;
typedef std::vector<tSpan> tSpanBuffer;
tSpanBuffer mOutline;
tSpanBuffer mWideOutline;
int mWideBorder;
struct Edge {
int next;
int posandflag;
} *mpEdgeBuffer;
unsigned mEdgeHeapSize;
unsigned mEdgeNext;
unsigned int* mpScanBuffer;
typedef unsigned char byte;
protected:
byte *mpOverlayBuffer;
int mOverlayWidth, mOverlayHeight;
int mPathOffsetX, mPathOffsetY;
int mOffsetX, mOffsetY;
private:
void _TrashPath();
void _TrashOverlay();
void _ReallocEdgeBuffer(int edges);
void _EvaluateBezier(int ptbase, bool fBSpline);
void _EvaluateLine(int pt1idx, int pt2idx);
void _EvaluateLine(int x0, int y0, int x1, int y1);
static void _OverlapRegion(tSpanBuffer& dst, tSpanBuffer& src, int dx, int dy);
public:
Rasterizer();
virtual ~Rasterizer();
bool BeginPath(HDC hdc);
bool EndPath(HDC hdc);
bool PartialBeginPath(HDC hdc, bool bClearPath);
bool PartialEndPath(HDC hdc, long dx, long dy);
bool ScanConvert();
bool CreateWidenedRegion(int borderX, int borderY);
void DeleteOutlines();
bool Rasterize(int xsub, int ysub, int fBlur, double fGaussianBlur);
CRect Draw(SubPicDesc& spd, CRect& clipRect, byte* pAlphaMask, int xsub, int ysub, const long* switchpts, bool fBody, bool fBorder);
void FillSolidRect(SubPicDesc& spd, int x, int y, int nWidth, int nHeight, DWORD lColor);
};
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