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Fix mesh transformation logic PrintObject::contour_z to handle off center cases

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This commit is contained in:
Aleksandr Dobkin
2026-03-16 00:56:52 -07:00
parent ba5b06196a
commit 29e35d77b1
1 changed files with 9 additions and 2 deletions
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11
src/libslic3r/PrintObject.cpp
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@@ -1,4 +1,6 @@
#include "Exception.hpp"
#include "Model.hpp"
#include "Point.hpp"
#include "Print.hpp"
#include "BoundingBox.hpp"
#include "ClipperUtils.hpp"
@@ -728,9 +730,14 @@ void PrintObject::contour_z()
throw RuntimeError("ContourZ: unexpected number of instances");
}
m_model_object->instances.front()->transform_mesh(&mesh, true);
sla::IndexedMesh imesh(mesh);
ModelInstance *inst = m_model_object->instances.front();
Point center_offset = this->center_offset();
Geometry::Transformation trans = inst->get_transformation();
trans.set_offset(Vec3d(-unscale<double>(center_offset.x()), -unscale<double>(center_offset.y()), 0));
mesh.transform(trans.get_matrix());
sla::IndexedMesh imesh(mesh);
std::mutex mtx;
size_t completed = 0;
tbb::parallel_for(