Cut WIP: Added "Place o cut"

src/libslic3r/Model.cpp

@@ -1494,19 +1494,9 @@ ModelObjectPtrs ModelObject::cut(size_t instance, const Vec3d& cut_center, const
         instances[instance]->get_mirror()
     );
 
-    const auto cut_matrix = Geometry::assemble_transform(
+    const auto cut_matrix = Geometry::assemble_transform(-cut_center);
-        -cut_center,
-        Vec3d::Zero(),
-        Vec3d::Ones(),
-        Vec3d::Ones()
-    );
 
-    const auto invert_cut_matrix = Geometry::assemble_transform(
+    const auto invert_cut_matrix = Geometry::assemble_transform(cut_center, cut_rotation);
-        cut_center,
-        cut_rotation,
-        Vec3d::Ones(),
-        Vec3d::Ones()
-    );
 
     // Displacement (in instance coordinates) to be applied to place the upper parts
     Vec3d local_displace = Vec3d::Zero();
@@ -1522,11 +1512,22 @@ ModelObjectPtrs ModelObject::cut(size_t instance, const Vec3d& cut_center, const
         if (!volume->is_model_part()) {
             if (volume->source.is_connector) {
                 if (attributes.has(ModelObjectCutAttribute::KeepUpper)) {
+
+                    Transform3d m = attributes.has(ModelObjectCutAttribute::PlaceOnCutUpper) ?
+                        Geometry::rotation_transform(cut_rotation).inverse() * cut_matrix * instance_matrix * volume_matrix :
+                        instance_matrix * volume_matrix;
+                    volume->set_transformation(m);
+
                     ModelVolume* vol = upper->add_volume(*volume);
                     // make a "hole" dipper
                     vol->set_scaling_factor(Z, 1.1 * vol->get_scaling_factor(Z));
                 }
                 if (attributes.has(ModelObjectCutAttribute::KeepLower)) {
+
+                    Transform3d m = attributes.has(ModelObjectCutAttribute::PlaceOnCutLower) ?
+                        Geometry::rotation_transform(Geometry::deg2rad(180.0) * Vec3d::UnitX()) * Geometry::rotation_transform(cut_rotation).inverse() * cut_matrix * instance_matrix * volume_matrix :
+                        instance_matrix * volume_matrix;
+                    volume->set_transformation(m);
                     ModelVolume* vol = lower->add_volume(*volume);
                     if (attributes.has(ModelObjectCutAttribute::CreateDowels))
                         // make a "hole" dipper
@@ -1567,10 +1568,7 @@ ModelObjectPtrs ModelObject::cut(size_t instance, const Vec3d& cut_center, const
             // Transform the mesh by the combined transformation matrix.
             // Flip the triangles in case the composite transformation is left handed.
             TriangleMesh mesh(volume->mesh());
-            mesh.transform(cut_matrix * instance_matrix * volume_matrix, true);
+            mesh.transform(Geometry::rotation_transform(cut_rotation).inverse() * cut_matrix * instance_matrix * volume_matrix, true);
-            mesh.rotate(-cut_rotation.z(), Z);
-            mesh.rotate(-cut_rotation.y(), Y);
-            mesh.rotate(-cut_rotation.x(), X);
 
             volume->reset_mesh();
             // Reset volume transformation except for offset
@@ -1590,6 +1588,7 @@ ModelObjectPtrs ModelObject::cut(size_t instance, const Vec3d& cut_center, const
             }
 
             if (attributes.has(ModelObjectCutAttribute::KeepUpper) && !upper_mesh.empty()) {
+                if (!attributes.has(ModelObjectCutAttribute::PlaceOnCutUpper))
                     upper_mesh.transform(invert_cut_matrix);
 
                 ModelVolume* vol = upper->add_volume(upper_mesh);
@@ -1601,6 +1600,9 @@ ModelObjectPtrs ModelObject::cut(size_t instance, const Vec3d& cut_center, const
                 vol->set_material(volume->material_id(), *volume->material());
             }
             if (attributes.has(ModelObjectCutAttribute::KeepLower) && !lower_mesh.empty()) {
+                if (attributes.has(ModelObjectCutAttribute::PlaceOnCutLower))
+                    lower_mesh.transform(Geometry::assemble_transform(Vec3d::Zero(), Geometry::deg2rad(180.0)*Vec3d::UnitX()));
+                else
                     lower_mesh.transform(invert_cut_matrix);
 
                 ModelVolume* vol = lower->add_volume(lower_mesh);

src/libslic3r/Model.hpp

@@ -304,7 +304,7 @@ enum class ModelVolumeType : int {
     SUPPORT_ENFORCER,
 };
 
-enum class ModelObjectCutAttribute : int { KeepUpper, KeepLower, FlipUpper, FlipLower, CreateDowels }; 
+enum class ModelObjectCutAttribute : int { KeepUpper, KeepLower, FlipUpper, FlipLower, PlaceOnCutUpper, PlaceOnCutLower, CreateDowels };
 using ModelObjectCutAttributes = enum_bitmask<ModelObjectCutAttribute>;
 ENABLE_ENUM_BITMASK_OPERATORS(ModelObjectCutAttribute);
 

src/slic3r/GUI/Gizmos/GLGizmoCut.cpp

@@ -1121,10 +1121,17 @@ void GLGizmoCut3D::on_render_input_window(float x, float y, float bottom_limit)
             m_imgui->disabled_begin(!connectors.empty());
             m_imgui->checkbox(_L("Keep") + "##upper", connectors.empty() ? m_keep_upper : keep);
             m_imgui->disabled_end();
-            ImGui::SameLine();
+            ImGui::SameLine(3 * m_label_width);
+
             m_imgui->disabled_begin(!m_keep_upper);
             m_imgui->disabled_begin(is_approx(Geometry::Transformation(m_rotation_m).get_rotation().x(), 0.) && is_approx(Geometry::Transformation(m_rotation_m).get_rotation().y(), 0.));
-            m_imgui->checkbox(_L("Place on cut") + "##upper", m_rotate_upper); // #ysTODO implement place on cut instead of Flip?
+
+            if (m_imgui->checkbox(_L("Place on cut") + "##upper", m_place_on_cut_upper))
+                m_rotate_upper = false;
+            ImGui::SameLine();
+            if (m_imgui->checkbox(_L("Flip") + "##upper", m_rotate_upper))
+                m_place_on_cut_upper = false;
+
             m_imgui->disabled_end();
             m_imgui->disabled_end();
 
@@ -1134,11 +1141,18 @@ void GLGizmoCut3D::on_render_input_window(float x, float y, float bottom_limit)
             ImGui::SameLine(2 * m_label_width);
 
             m_imgui->disabled_begin(!connectors.empty());
+
             m_imgui->checkbox(_L("Keep") + "##lower", connectors.empty() ? m_keep_lower : keep);
             m_imgui->disabled_end();
-            ImGui::SameLine();
+            ImGui::SameLine(3 * m_label_width);
             m_imgui->disabled_begin(!m_keep_lower);
-            m_imgui->checkbox(_L("Place on cut") + "##lower", m_rotate_lower); // #ysTODO implement place on cut instead of Flip?
+
+            if (m_imgui->checkbox(_L("Place on cut") + "##lower", m_place_on_cut_lower)) 
+                m_rotate_lower = false;
+            ImGui::SameLine();
+            if (m_imgui->checkbox(_L("Flip") + "##lower", m_rotate_lower))
+                m_place_on_cut_lower = false;
+
             m_imgui->disabled_end();
         }
 
@@ -1451,6 +1465,8 @@ void GLGizmoCut3D::perform_cut(const Selection& selection)
         plater->cut(object_idx, instance_idx, cut_center_offset, rotation,
             only_if(has_connectors ? true : m_keep_upper, ModelObjectCutAttribute::KeepUpper) |
             only_if(has_connectors ? true : m_keep_lower, ModelObjectCutAttribute::KeepLower) |
+            only_if(m_place_on_cut_upper, ModelObjectCutAttribute::PlaceOnCutUpper) | 
+            only_if(m_place_on_cut_lower, ModelObjectCutAttribute::PlaceOnCutLower) | 
             only_if(m_rotate_upper, ModelObjectCutAttribute::FlipUpper) | 
             only_if(m_rotate_lower, ModelObjectCutAttribute::FlipLower) | 
             only_if(create_dowels_as_separate_object, ModelObjectCutAttribute::CreateDowels));

src/slic3r/GUI/Gizmos/GLGizmoCut.hpp

@@ -61,6 +61,8 @@ class GLGizmoCut3D : public GLGizmoBase
 
     bool m_keep_upper{ true };
     bool m_keep_lower{ true };
+    bool m_place_on_cut_upper{ true };
+    bool m_place_on_cut_lower{ true };
     bool m_rotate_upper{ false };
     bool m_rotate_lower{ false };