Tech ENABLE_TRANSFORMATIONS_BY_MATRICES - Reoworked calculation of volume matrix for newly added modifiers and parts

Fixed conflicts during rebase with master

src/libslic3r/Geometry.cpp

@@ -764,6 +764,7 @@ Transformation Transformation::operator * (const Transformation& other) const
     return Transformation(get_matrix() * other.get_matrix());
 }
 
+#if !ENABLE_TRANSFORMATIONS_BY_MATRICES
 Transformation Transformation::volume_to_bed_transformation(const Transformation& instance_transformation, const BoundingBoxf3& bbox)
 {
     Transformation out;
@@ -771,11 +772,7 @@ Transformation Transformation::volume_to_bed_transformation(const Transformation
     if (instance_transformation.is_scaling_uniform()) {
         // No need to run the non-linear least squares fitting for uniform scaling.
         // Just set the inverse.
-#if ENABLE_TRANSFORMATIONS_BY_MATRICES
-        out.set_matrix(instance_transformation.get_matrix_no_offset().inverse());
-#else
         out.set_from_transform(instance_transformation.get_matrix(true).inverse());
-#endif // ENABLE_TRANSFORMATIONS_BY_MATRICES
     }
     else if (is_rotation_ninety_degrees(instance_transformation.get_rotation())) {
         // Anisotropic scaling, rotation by multiples of ninety degrees.
@@ -823,6 +820,7 @@ Transformation Transformation::volume_to_bed_transformation(const Transformation
 
     return out;
 }
+#endif // !ENABLE_TRANSFORMATIONS_BY_MATRICES
 
 // For parsing a transformation matrix from 3MF / AMF.
 Transform3d transform3d_from_string(const std::string& transform_str)

src/libslic3r/Geometry.hpp

@@ -509,10 +509,12 @@ public:
 
     Transformation operator * (const Transformation& other) const;
 
+#if !ENABLE_TRANSFORMATIONS_BY_MATRICES
     // Find volume transformation, so that the chained (instance_trafo * volume_trafo) will be as close to identity
     // as possible in least squares norm in regard to the 8 corners of bbox.
     // Bounding box is expected to be centered around zero in all axes.
     static Transformation volume_to_bed_transformation(const Transformation& instance_transformation, const BoundingBoxf3& bbox);
+#endif // !ENABLE_TRANSFORMATIONS_BY_MATRICES
 
 private:
     friend class cereal::access;

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -1584,9 +1584,15 @@ void ObjectList::load_modifier(const wxArrayString& input_files, ModelObject& mo
             new_volume->source.mesh_offset = model.objects.front()->volumes.front()->source.mesh_offset;
 
         if (from_galery) {
+#if ENABLE_TRANSFORMATIONS_BY_MATRICES
+            new_volume->set_transformation(v->get_instance_transformation().get_matrix_no_offset().inverse());
+            // Transform the new modifier to be aligned with the print bed.
+            const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
+#else
             // Transform the new modifier to be aligned with the print bed.
             const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
             new_volume->set_transformation(Geometry::Transformation::volume_to_bed_transformation(inst_transform, mesh_bb));
+#endif // ENABLE_TRANSFORMATIONS_BY_MATRICES
             // Set the modifier position.
             // Translate the new modifier to be pickable: move to the left front corner of the instance's bounding box, lift to print bed.
             const Vec3d offset = Vec3d(instance_bb.max.x(), instance_bb.min.y(), instance_bb.min.z()) + 0.5 * mesh_bb.size() - instance_offset;
@@ -1655,9 +1661,15 @@ void ObjectList::load_generic_subobject(const std::string& type_name, const Mode
 
     // First (any) GLVolume of the selected instance. They all share the same instance matrix.
     const GLVolume* v = selection.get_first_volume();
+#if ENABLE_TRANSFORMATIONS_BY_MATRICES
+    new_volume->set_transformation(v->get_instance_transformation().get_matrix_no_offset().inverse());
     // Transform the new modifier to be aligned with the print bed.
-	const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
+    const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
+#else
+    // Transform the new modifier to be aligned with the print bed.
+    const BoundingBoxf3 mesh_bb = new_volume->mesh().bounding_box();
     new_volume->set_transformation(Geometry::Transformation::volume_to_bed_transformation(v->get_instance_transformation(), mesh_bb));
+#endif // ENABLE_TRANSFORMATIONS_BY_MATRICES
     // Set the modifier position.
     auto offset = (type_name == "Slab") ?
         // Slab: Lift to print bed