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Fixed crash in reworked infill anchoring due to numeric issues.

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Added some more asserts to EdgeGrid.
This commit is contained in:
Vojtech Bubnik 2020-11-20 18:46:39 +01:00
parent b7abe7dfa9
commit 54a5c1da1e
2 changed files with 27 additions and 12 deletions
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15
src/libslic3r/Fill/FillBase.cpp
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@ -841,7 +841,7 @@ void mark_boundary_segments_touching_infill(
EdgeGrid::Grid grid;
// Make sure that the the grid is big enough for queries against the thick segment.
grid.set_bbox(boundary_bbox.inflated(distance_colliding + SCALED_EPSILON));
grid.set_bbox(boundary_bbox.inflated(distance_colliding * 1.43));
// Inflate the bounding box by a thick line width.
grid.create(boundary, std::max(clip_distance, distance_colliding) + scale_(10.));
@ -961,9 +961,6 @@ void mark_boundary_segments_touching_infill(
#endif // INFILL_DEBUG_OUTPUT
} visitor(grid, boundary, boundary_parameters, boundary_intersections, distance_colliding);
BoundingBoxf bboxf(boundary_bbox.min.cast<double>(), boundary_bbox.max.cast<double>());
bboxf.offset(- SCALED_EPSILON);
for (const Polyline &polyline : infill) {
#ifdef INFILL_DEBUG_OUTPUT
++ iStep;
@ -1019,12 +1016,14 @@ void mark_boundary_segments_touching_infill(
Vec2d vperp = perp(v);
Vec2d a = pt1 - v - vperp;
Vec2d b = pt2 + v - vperp;
if (Geometry::liang_barsky_line_clipping(a, b, bboxf))
grid.visit_cells_intersecting_line(a.cast<coord_t>(), b.cast<coord_t>(), visitor);
assert(grid.bbox().contains(a.cast<coord_t>()));
assert(grid.bbox().contains(b.cast<coord_t>()));
grid.visit_cells_intersecting_line(a.cast<coord_t>(), b.cast<coord_t>(), visitor);
a = pt1 - v + vperp;
b = pt2 + v + vperp;
if (Geometry::liang_barsky_line_clipping(a, b, bboxf))
grid.visit_cells_intersecting_line(a.cast<coord_t>(), b.cast<coord_t>(), visitor);
assert(grid.bbox().contains(a.cast<coord_t>()));
assert(grid.bbox().contains(b.cast<coord_t>()));
grid.visit_cells_intersecting_line(a.cast<coord_t>(), b.cast<coord_t>(), visitor);
#endif
#ifdef INFILL_DEBUG_OUTPUT
// export_infill_to_svg(boundary, boundary_parameters, boundary_intersections, infill, distance_colliding * 2, debug_out_path("%s-%03d-%03d-%03d.svg", "FillBase-mark_boundary_segments_touching_infill-step", iRun, iStep, int(point_idx)), { polyline });