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78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
#include "Painter.h"
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namespace Upp {
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void BufferPainter::MakeGradient(RGBA color1, RGBA color2, int n)
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{
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if(n == gradientn && color1 == gradient1 && color2 == gradient2)
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return;
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gradientn = n;
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gradient1 = color1;
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gradient2 = color2;
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ImageBuffer ib(n, 1);
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RGBA *t = ib[0];
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int l = 0;
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RGBA cl = color1;
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for(int i = 0; i <= pathattr.stop.GetCount(); i++) {
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int h;
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RGBA ch;
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if(i < pathattr.stop.GetCount()) {
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h = (int)(pathattr.stop[i] * (n - 1));
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ch = pathattr.stop_color[i];
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}
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else {
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h = n - 1;
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ch = color2;
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}
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int w = h - l;
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for(int j = 0; j < w; j++) {
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t->r = ((w - j) * cl.r + j * ch.r) / w;
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t->g = ((w - j) * cl.g + j * ch.g) / w;
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t->b = ((w - j) * cl.b + j * ch.b) / w;
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t->a = ((w - j) * cl.a + j * ch.a) / w;
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t++;
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}
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cl = ch;
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l = h;
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}
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*t = cl;
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gradient = ib;
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}
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void BufferPainter::Gradient(const RGBA& color1, const RGBA& color2, const Pointf& p1, const Pointf& p2)
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{
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MakeGradient(color1, color2, minmax(int(Distance(p1, p2) * pathattr.mtx.GetScale()), 2, 4096));
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}
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static dword sLinearStyle(int style)
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{
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dword s = style & ~FILL_FAST;
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return FILL_VPAD | (style & FILL_FAST) |
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decode(s, GRADIENT_PAD, FILL_HPAD, GRADIENT_REPEAT, FILL_HREPEAT, FILL_HREFLECT);
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}
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void BufferPainter::FillOp(const Pointf& p1, const RGBA& color1, const Pointf& p2, const RGBA& color2, int style)
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{
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Gradient(color1, color2, p1, p2);
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Fill(gradient, p1, p2, sLinearStyle(style));
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}
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void BufferPainter::FillOp(const RGBA& color1, const RGBA& color2, const Xform2D& transsrc, int style)
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{
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MakeGradient(color1, color2, 500);
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Fill(gradient, Xform2D::Scale(1.0 / 500) * transsrc, sLinearStyle(style));
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}
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void BufferPainter::StrokeOp(double width, const Pointf& p1, const RGBA& color1, const Pointf& p2, const RGBA& color2, int style)
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{
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Gradient(color1, color2, p1, p2);
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Stroke(width, gradient, p1, p2, sLinearStyle(style));
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}
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void BufferPainter::StrokeOp(double width, const RGBA& color1, const RGBA& color2, const Xform2D& transsrc, int style)
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{
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MakeGradient(color1, color2, 500);
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Stroke(width, gradient, Xform2D::Scale(1.0 / 500) * transsrc, sLinearStyle(style));
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}
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}
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