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Add Precise Seam placement feature (#12974)

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Co-authored-by: Ioannis Giannakas <59056762+igiannakas@users.noreply.github.com>
Co-authored-by: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>
Co-authored-by: Ian Bassi <ian.bassi@outlook.com>
This commit is contained in:
Damir GaleevIoannis GiannakasRodrigo FaselliIan Bassi
 authored and GitHub committed 2026-09-28 14:40:55 -03:00
1 parent 08f086daf3
commit 1846407e93
47 files changed
+3745 -126
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src/libslic3r/PrintObjectSlice.cpp
+29 -23
View File
@@ -1551,12 +1551,19 @@ ExPolygons PrintObject::_shrink_contour_holes(double contour_delta, double hole_
std::vector<Polygons> PrintObject::slice_support_volumes(const ModelVolumeType model_volume_type) const
{
auto it_volume = this->model_object()->volumes.begin();
auto it_volume_end = this->model_object()->volumes.end();
for (; it_volume != it_volume_end && (*it_volume)->type() != model_volume_type; ++ it_volume) ;
// Supports merge every matching volume; Precise Seam calls the shared slicer one volume at a time.
std::vector<const ModelVolume*> volumes;
for (const ModelVolume *volume : this->model_object()->volumes)
if (volume->type() == model_volume_type)
volumes.push_back(volume);
return this->slice_modifier_volumes(volumes);
}
std::vector<Polygons> PrintObject::slice_modifier_volumes(const std::vector<const ModelVolume*> &volumes) const
{
std::vector<Polygons> slices;
if (it_volume != it_volume_end) {
// Found at least a single support volume of model_volume_type.
if (!volumes.empty()) {
// Share layer heights, transforms and cancellation handling across the selected volumes.
std::vector<float> zs = zs_from_layers(this->layers());
std::vector<char> merge_layers;
bool merge = false;
@@ -1564,27 +1571,26 @@ std::vector<Polygons> PrintObject::slice_support_volumes(const ModelVolumeType m
auto throw_on_cancel_callback = std::function<void()>([print](){ print->throw_if_canceled(); });
MeshSlicingParamsEx params;
params.trafo = this->trafo_centered();
for (; it_volume != it_volume_end; ++ it_volume)
if ((*it_volume)->type() == model_volume_type) {
std::vector<ExPolygons> slices2 = slice_volume(*(*it_volume), zs, params, throw_on_cancel_callback);
if (slices.empty()) {
slices.reserve(slices2.size());
for (ExPolygons &src : slices2)
slices.emplace_back(to_polygons(std::move(src)));
} else if (!slices2.empty()) {
if (merge_layers.empty())
merge_layers.assign(zs.size(), false);
for (size_t i = 0; i < zs.size(); ++ i) {
if (slices[i].empty())
slices[i] = to_polygons(std::move(slices2[i]));
else if (! slices2[i].empty()) {
append(slices[i], to_polygons(std::move(slices2[i])));
merge_layers[i] = true;
merge = true;
}
for (const ModelVolume *volume : volumes) {
std::vector<ExPolygons> slices2 = slice_volume(*volume, zs, params, throw_on_cancel_callback);
if (slices.empty()) {
slices.reserve(slices2.size());
for (ExPolygons &src : slices2)
slices.emplace_back(to_polygons(std::move(src)));
} else if (!slices2.empty()) {
if (merge_layers.empty())
merge_layers.assign(zs.size(), false);
for (size_t i = 0; i < zs.size(); ++ i) {
if (slices[i].empty())
slices[i] = to_polygons(std::move(slices2[i]));
else if (! slices2[i].empty()) {
append(slices[i], to_polygons(std::move(slices2[i])));
merge_layers[i] = true;
merge = true;
}
}
}
}
if (merge) {
std::vector<Polygons*> to_merge;
to_merge.reserve(zs.size());