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| author | bubnikv <bubnikv@gmail.com> | 2017-12-14 15:26:44 +0300 |
|---|---|---|
| committer | bubnikv <bubnikv@gmail.com> | 2017-12-14 15:26:44 +0300 |
| commit | d65835f89b2d7138e5225bc1ddb4931f09ad4f73 (patch) | |
| tree | 294a2bee0ccac5dc3091f548ceedb72169ee8049 /xs/src/libslic3r | |
| parent | eaaac8b2a4161148b0bbb4267bc866a0d80ab8e1 (diff) | |
Improvement of region classification numerical stability.
The Clipper library is not stable when calcuating offsets of contours
with holes. Replaced a single call of offset2 with offset_ex(offset_ex()).
This is not the most efficient solution, but it fixes this problem.
Fixes https://github.com/prusa3d/Slic3r/issues/456
Diffstat (limited to 'xs/src/libslic3r')
| -rw-r--r-- | xs/src/libslic3r/PrintObject.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xs/src/libslic3r/PrintObject.cpp b/xs/src/libslic3r/PrintObject.cpp index fc2979c20..c61fc102b 100644 --- a/xs/src/libslic3r/PrintObject.cpp +++ b/xs/src/libslic3r/PrintObject.cpp @@ -447,7 +447,8 @@ void PrintObject::detect_surfaces_type() to_polygons(upper_layer->get_region(idx_region)->slices.surfaces) : to_polygons(upper_layer->slices); surfaces_append(top, - offset2_ex(diff(layerm_slices_surfaces, upper_slices, true), -offset, offset), + //FIXME implement offset2_ex working over ExPolygons, that should be a bit more efficient than calling offset_ex twice. + offset_ex(offset_ex(diff_ex(layerm_slices_surfaces, upper_slices, true), -offset), offset), stTop); } else { // if no upper layer, all surfaces of this one are solid |