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Fix unstable contours from triangulated planar faces (#15313)

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Valerii Bokhan
2026-08-20 23:03:38 +02:00
committed by GitHub
parent aa233a82a5
commit 87ca2bc42e
1 changed files with 7 additions and 0 deletions
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7
src/libslic3r/TriangleMeshSlicer.cpp
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@@ -1461,6 +1461,13 @@ static Polygons make_loops(
chain_open_polylines_close_gaps(open_polylines, loops, max_gap, true); chain_open_polylines_close_gaps(open_polylines, loops, max_gap, true);
#endif #endif
// Orca: A planar quad represented by two triangles contributes a point where the
// slicing plane crosses the shared diagonal. After rounding to coord_t this
// point may be very slightly off the otherwise straight contour edge. Apart
// from being redundant, such points make the subsequent contour
// simplification depend on the slice height (and may move seam candidates).
remove_collinear(loops);
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING #ifdef SLIC3R_DEBUG_SLICE_PROCESSING
{ {
static int iRun = 0; static int iRun = 0;