Prototype of scale to fit print volume command

src/libslic3r/Technologies.hpp

@@ -12,7 +12,7 @@
 // Renders a small sphere in the center of the bounding box of the current selection when no gizmo is active
 #define ENABLE_RENDER_SELECTION_CENTER 0
 // Shows an imgui dialog with render related data
-#define ENABLE_RENDER_STATISTICS 1
+#define ENABLE_RENDER_STATISTICS 0
 
 
 //====================
@@ -47,7 +47,9 @@
 
 
 // Enable saving textures on GPU in compressed format 
-#define ENABLE_COMPRESSED_TEXTURES 1
+#define ENABLE_COMPRESSED_TEXTURES 0
 
+// Enable scale object to fit print volume
+#define ENABLE_SCALE_TO_FIT_PRINT_VOLUME 1
 
 #endif // _technologies_h_

src/slic3r/GUI/Gizmos/GLGizmosManager.cpp

@@ -847,6 +847,19 @@ bool GLGizmosManager::on_char(wxKeyEvent& evt, GLCanvas3D& canvas)
                 
             break;
         }
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+        case 'F':
+        case 'f':
+        {
+            if (m_current == Scale)
+            {
+                wxGetApp().plater()->scale_selection_to_fit_print_volume();
+                processed = true;
+            }
+
+            break;
+        }
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
         }
     }
 

src/slic3r/GUI/Plater.cpp

@@ -1286,6 +1286,9 @@ struct Plater::priv
     void sla_optimize_rotation();
     void split_object();
     void split_volume();
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+    void scale_selection_to_fit_print_volume();
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
     bool background_processing_enabled() const { return this->get_config("background_processing") == "1"; }
     void update_print_volume_state();
     void schedule_background_process();
@@ -2346,6 +2349,13 @@ void Plater::priv::split_volume()
     wxGetApp().obj_list()->split();
 }
 
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+void Plater::priv::scale_selection_to_fit_print_volume()
+{
+    this->view3D->get_canvas3d()->get_selection().scale_to_fit_print_volume(*config);
+}
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+
 void Plater::priv::schedule_background_process()
 {
     delayed_error_message.clear();
@@ -3008,6 +3018,11 @@ bool Plater::priv::init_common_menu(wxMenu* menu, const bool is_part/* = false*/
 
     sidebar->obj_list()->append_menu_item_fix_through_netfabb(menu);
 
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+    append_menu_item(menu, wxID_ANY, _(L("Scale to print volume")), _(L("Scale the selected object to fit the print volume")),
+        [this](wxCommandEvent&) { scale_selection_to_fit_print_volume(); }, "", menu);
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+
     wxMenu* mirror_menu = new wxMenu();
     if (mirror_menu == nullptr)
         return false;
@@ -3447,6 +3462,13 @@ bool Plater::is_selection_empty() const
     return p->get_selection().is_empty() || p->get_selection().is_wipe_tower();
 }
 
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+void Plater::scale_selection_to_fit_print_volume()
+{
+    p->scale_selection_to_fit_print_volume();
+}
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+
 void Plater::cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_upper, bool keep_lower, bool rotate_lower)
 {
     wxCHECK_RET(obj_idx < p->model.objects.size(), "obj_idx out of bounds");

src/slic3r/GUI/Plater.hpp

@@ -162,6 +162,9 @@ public:
     void decrease_instances(size_t num = 1);
     void set_number_of_copies(/*size_t num*/);
     bool is_selection_empty() const;
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+    void scale_selection_to_fit_print_volume();
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
 
     void cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_upper = true, bool keep_lower = true, bool rotate_lower = false);
 

src/slic3r/GUI/Selection.cpp

@@ -662,14 +662,34 @@ void Selection::scale(const Vec3d& scale, TransformationType transformation_type
     {
         GLVolume &volume = *(*m_volumes)[i];
         if (is_single_full_instance()) {
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+            if (transformation_type.relative())
+            {
+                Transform3d m = Geometry::assemble_transform(Vec3d::Zero(), Vec3d::Zero(), scale);
+                Eigen::Matrix<double, 3, 3, Eigen::DontAlign> new_matrix = (m * m_cache.volumes_data[i].get_instance_scale_matrix()).matrix().block(0, 0, 3, 3);
+                // extracts scaling factors from the composed transformation
+                Vec3d new_scale(new_matrix.col(0).norm(), new_matrix.col(1).norm(), new_matrix.col(2).norm());
+                if (transformation_type.joint())
+                    volume.set_instance_offset(m_cache.dragging_center + m * (m_cache.volumes_data[i].get_instance_position() - m_cache.dragging_center));
+
+                volume.set_instance_scaling_factor(new_scale);
+            }
+            else
+            {
+#else
                 assert(transformation_type.absolute());
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
                 if (transformation_type.world() && (std::abs(scale.x() - scale.y()) > EPSILON || std::abs(scale.x() - scale.z()) > EPSILON)) {
                     // Non-uniform scaling. Transform the scaling factors into the local coordinate system.
                     // This is only possible, if the instance rotation is mulitples of ninety degrees.
                     assert(Geometry::is_rotation_ninety_degrees(volume.get_instance_rotation()));
                     volume.set_instance_scaling_factor((volume.get_instance_transformation().get_matrix(true, false, true, true).matrix().block<3, 3>(0, 0).transpose() * scale).cwiseAbs());
-            } else
+                }
+                else
                     volume.set_instance_scaling_factor(scale);
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+            }
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
         }
         else if (is_single_volume() || is_single_modifier())
             volume.set_volume_scaling_factor(scale);
@@ -713,6 +733,51 @@ void Selection::scale(const Vec3d& scale, TransformationType transformation_type
     this->set_bounding_boxes_dirty();
 }
 
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+void Selection::scale_to_fit_print_volume(const DynamicPrintConfig& config)
+{
+    if (is_empty() || (m_mode == Volume))
+        return;
+
+    // adds 1/100th of a mm on all sides to avoid false out of print volume detections due to floating-point roundings
+    Vec3d box_size = get_bounding_box().size() + 0.01 * Vec3d::Ones();
+
+    const ConfigOptionPoints* opt = dynamic_cast<const ConfigOptionPoints*>(config.option("bed_shape"));
+    if (opt != nullptr)
+    {
+        BoundingBox bed_box_2D = get_extents(Polygon::new_scale(opt->values));
+        BoundingBoxf3 print_volume(Vec3d(unscale<double>(bed_box_2D.min(0)), unscale<double>(bed_box_2D.min(1)), 0.0), Vec3d(unscale<double>(bed_box_2D.max(0)), unscale<double>(bed_box_2D.max(1)), config.opt_float("max_print_height")));
+        Vec3d print_volume_size = print_volume.size();
+        double sx = (box_size(0) != 0.0) ? print_volume_size(0) / box_size(0) : 0.0;
+        double sy = (box_size(1) != 0.0) ? print_volume_size(1) / box_size(1) : 0.0;
+        double sz = (box_size(2) != 0.0) ? print_volume_size(2) / box_size(2) : 0.0;
+        if ((sx != 0.0) && (sy != 0.0) && (sz != 0.0))
+        {
+            double s = std::min(sx, std::min(sy, sz));
+            if (s != 1.0)
+            {
+                TransformationType type;
+                type.set_world();
+                type.set_relative();
+                type.set_joint();
+
+                // apply scale
+                start_dragging();
+                scale(s * Vec3d::Ones(), type);
+                wxGetApp().plater()->canvas3D()->do_scale();
+
+                // center selection on print bed
+                start_dragging();
+                translate(print_volume.center() - get_bounding_box().center());
+                wxGetApp().plater()->canvas3D()->do_move();
+
+                wxGetApp().obj_manipul()->set_dirty();
+            }
+        }
+    }
+}
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+
 void Selection::mirror(Axis axis)
 {
     if (!m_valid)

src/slic3r/GUI/Selection.hpp

@@ -287,6 +287,9 @@ public:
     void rotate(const Vec3d& rotation, TransformationType transformation_type);
     void flattening_rotate(const Vec3d& normal);
     void scale(const Vec3d& scale, TransformationType transformation_type);
+#if ENABLE_SCALE_TO_FIT_PRINT_VOLUME
+    void scale_to_fit_print_volume(const DynamicPrintConfig& config);
+#endif // ENABLE_SCALE_TO_FIT_PRINT_VOLUME
     void mirror(Axis axis);
 
     void translate(unsigned int object_idx, const Vec3d& displacement);