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Fix of the last clipperutil safety_offset modification. Handle safety

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offset of holes separately, don't forget to reverse them before / after.
This commit is contained in:
bubnikv 2016-11-29 19:26:26 +01:00
parent 792856a505
commit 85aa802d4b
1 changed files with 10 additions and 1 deletions
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11
xs/src/libslic3r/ClipperUtils.cpp
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@ -1062,8 +1062,12 @@ void safety_offset(ClipperLib::Paths* paths)
#endif /* CLIPPER_UTILS_DEBUG */
ClipperLib::Paths out;
for (size_t i = 0; i < paths->size(); ++ i) {
ClipperLib::Path &path = (*paths)[i];
co.Clear();
co.MiterLimit = 2;
bool ccw = ClipperLib::Orientation(path);
if (! ccw)
std::reverse(path.begin(), path.end());
{
PROFILE_BLOCK(safety_offset_AddPaths);
co.AddPath((*paths)[i], ClipperLib::jtMiter, ClipperLib::etClosedPolygon);
@ -1072,7 +1076,12 @@ void safety_offset(ClipperLib::Paths* paths)
PROFILE_BLOCK(safety_offset_Execute);
// offset outside by 10um
ClipperLib::Paths out_this;
co.Execute(out_this, 10.f * float(CLIPPER_OFFSET_SCALE));
co.Execute(out_this, ccw ? 10.f * float(CLIPPER_OFFSET_SCALE) : -10.f * float(CLIPPER_OFFSET_SCALE));
if (! ccw) {
// Reverse the resulting contours once again.
for (ClipperLib::Paths::iterator it = out_this.begin(); it != out_this.end(); ++ it)
std::reverse(it->begin(), it->end());
}
if (out.empty())
out = std::move(out_this);
else