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SPE-2639 Make seam placing tolerate invalid data.

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Even if the seam placer generates invalid scarf seam
that has start_point == end_point, deal with it
gracefully.
This commit is contained in:
Martin Šach 2025-01-13 12:27:16 +01:00 committed by Lukas Matena
parent 944844131c
commit f3d736ab63
1 changed files with 9 additions and 2 deletions
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11
src/libslic3r/GCode.cpp
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@ -2302,13 +2302,20 @@ std::pair<GCode::SmoothPath, std::size_t> split_with_seam(
if (loop.paths.empty() || loop.paths.front().empty()) {
return {SmoothPath{}, 0};
}
if (const auto seam_point{boost::get<Point>(&seam)}; seam_point != nullptr) {
const auto seam_point{boost::get<Point>(&seam)};
const auto scarf{boost::get<Seams::Scarf::Scarf>(&seam)};
if (seam_point != nullptr) {
return {
smooth_path_cache.resolve_or_fit_split_with_seam(
loop, flipped, scaled_resolution, *seam_point, seam_point_merge_distance_threshold
),
0};
} else if (const auto scarf{boost::get<Seams::Scarf::Scarf>(&seam)}; scarf != nullptr) {
} else if (scarf != nullptr && scarf->start_point == scarf->end_point) {
return {smooth_path_cache.resolve_or_fit_split_with_seam(
loop, flipped, scaled_resolution, scarf->start_point, seam_point_merge_distance_threshold
), 0};
} else if (scarf != nullptr) {
ExtrusionPaths paths{loop.paths};
const auto apply_smoothing{[&](tcb::span<const ExtrusionPath> paths){
return smooth_path_cache.resolve_or_fit(paths, false, scaled<double>(0.0015));