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FIX: crash when slice model 

Due to accuracy issues, some points are not within the boundingbox.
github: 4615 associated with 3749

Change-Id: Ic2fb359d9779191c8c98660e13275147b0cc09cd
This commit is contained in:
zhimin.zeng 2024-10-18 16:42:12 +08:00 committed by Lane.Wei
parent 3ee4fd55b1
commit 4829d22f8c
1 changed files with 2 additions and 3 deletions
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5
src/libslic3r/MultiMaterialSegmentation.cpp
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@ -2155,7 +2155,7 @@ std::vector<std::vector<ExPolygons>> multi_material_segmentation_by_painting(con
if (layer_idx > 1) bbox.merge(layer_bboxes[layer_idx - 1]);
if (layer_idx < num_layers - 1) bbox.merge(layer_bboxes[layer_idx + 1]);
// Projected triangles may slightly exceed the input polygons.
bbox.offset(20 * SCALED_EPSILON);
bbox.offset(30 * SCALED_EPSILON);
edge_grids[layer_idx].set_bbox(bbox);
edge_grids[layer_idx].create(input_expolygons[layer_idx], coord_t(scale_(10.)));
}
@ -2237,8 +2237,7 @@ std::vector<std::vector<ExPolygons>> multi_material_segmentation_by_painting(con
// be outside EdgeGrid's BoundingBox, for example, when the negative volume is used on the painted area (GH #7618).
// To ensure that the painted line is always inside EdgeGrid's BoundingBox, it is clipped by EdgeGrid's BoundingBox in cases
// when any of the endpoints of the line are outside the EdgeGrid's BoundingBox.
BoundingBox edge_grid_bbox = edge_grids[layer_idx].bbox();
edge_grid_bbox.offset(10 * scale_(EPSILON));
const BoundingBox& edge_grid_bbox = edge_grids[layer_idx].bbox();
if (!edge_grid_bbox.contains(line_to_test.a) || !edge_grid_bbox.contains(line_to_test.b)) {
// If the painted line (line_to_test) is entirely outside EdgeGrid's BoundingBox, skip this painted line.
if (!edge_grid_bbox.overlap(BoundingBox(Points{line_to_test.a, line_to_test.b})) ||