ultimatepp/uppsrc/Painter/OnPath.cpp
mirek-fidler 2d0f19053a
Painter2 (#182)
Painter improvements: Multithreaded rendering improved, new image filter (like Lanczos 3) option, image mapping is now more precise
2023-12-24 15:21:23 +01:00

34 lines
717 B
C++

#include "Painter.h"
namespace Upp {
void BufferPainter::BeginOnPathOp(double q, bool abs)
{
One<SpanSource> none;
if(onpath.GetCount() == 0)
RenderPath(ONPATH, none, RGBAZero());
Begin();
if(pathlen > 0) {
if(!abs)
q *= pathlen;
Pointf pos(0, 0);
for(int i = 0; i < onpath.GetCount(); i++) {
PathLine& l = onpath[i];
if(l.len > 0 && (l.len > q || q >= 1.0 && i == onpath.GetCount() - 1)) {
Pointf v = l.p - pos;
Translate(q / l.len * v + pos);
Rotate(Bearing(v));
break;
}
q -= l.len;
pos = l.p;
}
}
attrstack.Top().onpath = true;
onpathstack.Add() = pick(onpath);
pathlenstack.Add(pathlen);
onpath.Clear();
pathlen = 0;
}
}