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58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
#include "Painter.h"
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NAMESPACE_UPP
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void BufferPainter::MakeGradient(RGBA *t, RGBA color1, RGBA color2, int cx)
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{
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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] * (cx - 1));
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ch = pathattr.stop_color[i];
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}
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else {
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h = cx - 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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}
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Image BufferPainter::GetGradient(const RGBA& color1, const RGBA& color2, const Pointf& p1, const Pointf& p2)
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{
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int n = minmax(int(Distance(p1, p2) * pathattr.mtx.GetScale()), 2, 4096);
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ImageBuffer ib(n, 1);
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MakeGradient(ib, color1, color2, n);
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return ib;
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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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Fill(GetGradient(color1, color2, p1, p2), p1, p2,
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FILL_VPAD | FILL_FAST |
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(style == GRADIENT_PAD ? FILL_HPAD : style == GRADIENT_REPEAT
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? FILL_HREPEAT : FILL_HREFLECT));
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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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Stroke(width, GetGradient(color1, color2, p1, p2), p1, p2,
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FILL_VPAD | FILL_FAST |
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(style == GRADIENT_PAD ? FILL_HPAD : style == GRADIENT_REPEAT
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? FILL_HREPEAT : FILL_HREFLECT));
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}
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END_UPP_NAMESPACE
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