Rasterizer.h
上传用户:xjjlds
上传日期:2015-12-05
资源大小:22823k
文件大小:2k
- /*
- * Copyright (C) 2003-2005 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 "..SubPicISubPic.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 border);
- void DeleteOutlines();
- bool Rasterize(int xsub, int ysub, bool fBlur);
- CRect Draw(SubPicDesc& spd, CRect& clipRect, byte* pAlphaMask, int xsub, int ysub, const long* switchpts, bool fBody, bool fBorder);
- };