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111 lines
2.5 KiB
C++
111 lines
2.5 KiB
C++
#ifndef _ScanLine_ScanLine_h_
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#define _ScanLine_ScanLine_h_
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#include <CtrlLib/CtrlLib.h>
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using namespace Upp;
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#define PAINTER_TIMING(x) // RTIMING(x)
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inline RGBA Mul7(const RGBA& s, int mul)
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{
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RGBA t;
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t.r = (mul * s.r) >> 7;
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t.g = (mul * s.g) >> 7;
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t.b = (mul * s.b) >> 7;
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t.a = (mul * s.a) >> 7;
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return t;
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}
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inline void AlphaBlend(RGBA& t, const RGBA& c)
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{
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int alpha = 256 - (c.a + (c.a >> 7));
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t.r = c.r + (alpha * t.r >> 8);
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t.g = c.g + (alpha * t.g >> 8);
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t.b = c.b + (alpha * t.b >> 8);
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t.a = c.a + (alpha * t.a >> 8);
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}
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inline void AlphaBlendCover7(RGBA& t, const RGBA& c, byte cover)
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{
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AlphaBlend(t, Mul7(c, cover));
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}
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struct ScanLine {
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int x, len;
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String data;
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String ToString() const;
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};
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void Apply(RGBA *t, int len, const RGBA& color, const ScanLine& s);
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ScanLine And(const ScanLine& a, const ScanLine& b);
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ScanLine Pack(int x, const byte *data, int len);
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#define YLINK
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class Rasterizer {
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struct Cell : Moveable<Cell> {
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int16 x;
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int16 cover;
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int area;
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bool operator<(const Cell& b) const { return x < b.x; }
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};
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#ifdef YLINK
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struct CellY : Cell, Moveable<CellY> {
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int ylink;
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};
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#endif
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Rectf cliprect;
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double x1, y1;
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#ifdef YLINK
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Buffer<int> ylink;
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Vector<CellY> cell;
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Vector<Cell> line;
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#else
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Buffer< Vector<Cell> > cell;
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#endif
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int current_y;
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Cell current;
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int xmax, ymax;
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int min_y;
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int max_y;
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Size sz;
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bool finish;
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void AddCurrent();
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void SetCurrent(int x, int y);
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void RenderHLine(int ey, int x1, int y1, int x2, int y2);
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void LineClip(double x1, double y1, double x2, double y2);
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int CvX(double x);
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int CvY(double y);
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void CvLine(double x1, double y1, double x2, double y2);
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bool BeginRender(int y, const Cell *&c, const Cell *&e);
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public:
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void LineRaw(int x1, int y1, int x2, int y2);
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void Move(double x, double y);
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void Line(double x, double y);
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int MinY() const { return min_y; }
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int MaxY() const { return max_y; }
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void SetClip(const Rectf& rect);
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template <class Target>
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void Render(int y, Target& g);
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void Reset();
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Rasterizer(int cx, int cy);
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};
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#include "Rasterizer.hpp"
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void Render(ImageBuffer& ib, Rasterizer& r, const RGBA& color);
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#endif
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