Disable slicing when one object crosses the print volume boundary

xs/src/libslic3r/BoundingBox.hpp

@@ -103,6 +103,10 @@ public:
     bool contains(const BoundingBox3Base<PointClass>& other) const {
         return contains(other.min) && contains(other.max);
     }
+
+    bool intersects(const BoundingBox3Base<PointClass>& other) const {
+        return (min.x < other.max.x) && (max.x > other.min.x) && (min.y < other.max.y) && (max.y > other.min.y) && (min.z < other.max.z) && (max.z > other.min.z);
+    }
 };
 
 class BoundingBox : public BoundingBoxBase<Point>

xs/src/libslic3r/Model.cpp

@@ -1235,7 +1235,7 @@ void ModelObject::split(ModelObjectPtrs* new_objects)
     return;
 }
 
-void ModelObject::check_instances_printability(const BoundingBoxf3& print_volume)
+void ModelObject::check_instances_print_volume_state(const BoundingBoxf3& print_volume)
 {
     for (ModelVolume* vol : this->volumes)
     {
@@ -1274,10 +1274,15 @@ void ModelObject::check_instances_printability(const BoundingBoxf3& print_volume
                         p.y += inst->offset.y;
 
                         bb.merge(p);
-
-                        inst->is_printable = print_volume.contains(bb);
                     }
                 }
+
+                if (print_volume.contains(bb))
+                    inst->print_volume_state = ModelInstance::PVS_Inside;
+                else if (print_volume.intersects(bb))
+                    inst->print_volume_state = ModelInstance::PVS_Partly_Outside;
+                else
+                    inst->print_volume_state = ModelInstance::PVS_Fully_Outside;
             }
         }
     }

xs/src/libslic3r/Model.hpp

@@ -131,7 +131,8 @@ public:
     bool needed_repair() const;
     void cut(coordf_t z, Model* model) const;
     void split(ModelObjectPtrs* new_objects);
-    void check_instances_printability(const BoundingBoxf3& print_volume);
+
+    void check_instances_print_volume_state(const BoundingBoxf3& print_volume);
 
     // Print object statistics to console.
     void print_info() const;
@@ -198,14 +199,23 @@ private:
 // Knows the affine transformation of an object.
 class ModelInstance
 {
-    friend class ModelObject;
 public:
+    enum EPrintVolumeState : unsigned char
+    {
+        PVS_Inside,
+        PVS_Partly_Outside,
+        PVS_Fully_Outside,
+        Num_BedStates
+    };
+
+    friend class ModelObject;
+
     double rotation;            // Rotation around the Z axis, in radians around mesh center point
     double scaling_factor;
     Pointf offset;              // in unscaled coordinates
     
-    // whether or not this instance is contained in the print volume (set by Print::validate() using ModelObject::check_instances_printability())
+    // flag showing the position of this instance with respect to the print volume (set by Print::validate() using ModelObject::check_instances_print_volume_state())
-    bool is_printable;
+    EPrintVolumeState print_volume_state;
 
     ModelObject* get_object() const { return this->object; }
 
@@ -218,13 +228,15 @@ public:
     // To be called on an external polygon. It does not translate the polygon, only rotates and scales.
     void transform_polygon(Polygon* polygon) const;
 
+    bool is_printable() const { return print_volume_state == PVS_Inside; }
+
 private:
     // Parent object, owning this instance.
     ModelObject* object;
 
-    ModelInstance(ModelObject *object) : rotation(0), scaling_factor(1), object(object), is_printable(false) {}
+    ModelInstance(ModelObject *object) : rotation(0), scaling_factor(1), object(object), print_volume_state(PVS_Inside) {}
     ModelInstance(ModelObject *object, const ModelInstance &other) :
-        rotation(other.rotation), scaling_factor(other.scaling_factor), offset(other.offset), object(object), is_printable(false) {}
+        rotation(other.rotation), scaling_factor(other.scaling_factor), offset(other.offset), object(object), print_volume_state(PVS_Inside) {}
 };
 
 

xs/src/libslic3r/Print.cpp

@@ -543,7 +543,7 @@ std::string Print::validate() const
     print_volume.min.z = -1e10;
     unsigned int printable_count = 0;
     for (PrintObject *po : this->objects) {
-        po->model_object()->check_instances_printability(print_volume);
+        po->model_object()->check_instances_print_volume_state(print_volume);
         po->reload_model_instances();
         if (po->is_printable())
             ++printable_count;

xs/src/libslic3r/PrintObject.cpp

@@ -103,7 +103,7 @@ bool PrintObject::reload_model_instances()
     copies.reserve(this->_model_object->instances.size());
     for (const ModelInstance *mi : this->_model_object->instances)
     {
-        if (mi->is_printable)
+        if (mi->is_printable())
             copies.emplace_back(Point::new_scale(mi->offset.x, mi->offset.y));
     }
     return this->set_copies(copies);

xs/src/slic3r/GUI/3DScene.cpp

@@ -743,7 +743,7 @@ void GLVolumeCollection::render_legacy() const
     glDisable(GL_BLEND);
 }
 
-bool GLVolumeCollection::check_outside_state(const DynamicPrintConfig* config)
+bool GLVolumeCollection::check_outside_state(const DynamicPrintConfig* config, ModelInstance::EPrintVolumeState* out_state)
 {
     if (config == nullptr)
         return false;
@@ -757,18 +757,31 @@ bool GLVolumeCollection::check_outside_state(const DynamicPrintConfig* config)
     // Allow the objects to protrude below the print bed
     print_volume.min.z = -1e10;
 
-    bool contained = true;
+    ModelInstance::EPrintVolumeState state = ModelInstance::PVS_Inside;
+    bool all_contained = true;
+
     for (GLVolume* volume : this->volumes)
     {
         if ((volume != nullptr) && !volume->is_modifier)
         {
-            bool state = print_volume.contains(volume->transformed_bounding_box());
+            const BoundingBoxf3& bb = volume->transformed_bounding_box();
-            contained &= state;
+            bool contained = print_volume.contains(bb);
-            volume->is_outside = !state;
+            all_contained &= contained;
+
+            volume->is_outside = !contained;
+
+            if ((state == ModelInstance::PVS_Inside) && volume->is_outside)
+                state = ModelInstance::PVS_Fully_Outside;
+
+            if ((state == ModelInstance::PVS_Fully_Outside) && volume->is_outside && print_volume.intersects(bb))
+                state = ModelInstance::PVS_Partly_Outside;
         }
     }
 
-    return contained;
+    if (out_state != nullptr)
+        *out_state = state;
+
+    return all_contained;
 }
 
 void GLVolumeCollection::reset_outside_state()

xs/src/slic3r/GUI/3DScene.hpp

@@ -6,6 +6,7 @@
 #include "../../libslic3r/Line.hpp"
 #include "../../libslic3r/TriangleMesh.hpp"
 #include "../../libslic3r/Utils.hpp"
+#include "../../libslic3r/Model.hpp"
 #include "../../slic3r/GUI/GLCanvas3DManager.hpp"
 
 class wxBitmap;
@@ -422,7 +423,9 @@ public:
         print_box_max[0] = max_x; print_box_max[1] = max_y; print_box_max[2] = max_z;
     }
 
-    bool check_outside_state(const DynamicPrintConfig* config);
+    // returns true if all the volumes are completely contained in the print volume
+    // returns the containment state in the given out_state, if non-null
+    bool check_outside_state(const DynamicPrintConfig* config, ModelInstance::EPrintVolumeState* out_state);
     void reset_outside_state();
 
     void update_colors_by_extruder(const DynamicPrintConfig* config);

xs/src/slic3r/GUI/GLCanvas3D.cpp

@@ -1381,7 +1381,8 @@ void GLCanvas3D::Gizmos::render(const GLCanvas3D& canvas, const BoundingBoxf3& b
 
     ::glDisable(GL_DEPTH_TEST);
 
-    _render_current_gizmo(box);
+    if (box.radius() > 0.0)
+        _render_current_gizmo(box);
 
     ::glPushMatrix();
     ::glLoadIdentity();
@@ -1657,7 +1658,7 @@ void GLCanvas3D::update_volumes_selection(const std::vector<int>& selections)
 
 bool GLCanvas3D::check_volumes_outside_state(const DynamicPrintConfig* config) const
 {
-    return m_volumes.check_outside_state(config);
+    return m_volumes.check_outside_state(config, nullptr);
 }
 
 bool GLCanvas3D::move_volume_up(unsigned int id)
@@ -2082,19 +2083,22 @@ void GLCanvas3D::reload_scene(bool force)
     // checks for geometry outside the print volume to render it accordingly
     if (!m_volumes.empty())
     {
-        bool contained = m_volumes.check_outside_state(m_config);
+        ModelInstance::EPrintVolumeState state;
+        bool contained = m_volumes.check_outside_state(m_config, &state);
+
         if (!contained)
         {
             enable_warning_texture(true);
             _3DScene::generate_warning_texture(L("Detected object outside print volume"));
+            m_on_enable_action_buttons_callback.call(state == ModelInstance::PVS_Fully_Outside);
         }
         else
         {
             enable_warning_texture(false);
             m_volumes.reset_outside_state();
             _3DScene::reset_warning_texture();
+            m_on_enable_action_buttons_callback.call(!m_model->objects.empty());
         }
-        m_on_enable_action_buttons_callback.call(!m_model->objects.empty());
     }
     else
     {
@@ -3130,6 +3134,7 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
         m_mouse.set_start_position_3D_as_invalid();
         m_mouse.set_start_position_2D_as_invalid();
         m_mouse.dragging = false;
+        m_dirty = true;
     }
     else if (evt.Moving())
     {
@@ -3272,7 +3277,7 @@ BoundingBoxf3 GLCanvas3D::_selected_volumes_bounding_box() const
     BoundingBoxf3 bb;
     for (const GLVolume* volume : m_volumes.volumes)
     {
-        if ((volume != nullptr) && volume->selected)
+        if ((volume != nullptr) && !volume->is_wipe_tower && volume->selected)
             bb.merge(volume->transformed_bounding_box());
     }
     return bb;
@@ -3549,7 +3554,7 @@ void GLCanvas3D::_render_objects() const
             {
                 const BoundingBoxf3& bed_bb = m_bed.get_bounding_box();
                 m_volumes.set_print_box((float)bed_bb.min.x, (float)bed_bb.min.y, 0.0f, (float)bed_bb.max.x, (float)bed_bb.max.y, (float)m_config->opt_float("max_print_height"));
-                m_volumes.check_outside_state(m_config);
+                m_volumes.check_outside_state(m_config, nullptr);
             }
             // do not cull backfaces to show broken geometry, if any
             ::glDisable(GL_CULL_FACE);

xs/xsp/GUI_3DScene.xsp

@@ -105,10 +105,6 @@
     void release_geometry();
 
     void set_print_box(float min_x, float min_y, float min_z, float max_x, float max_y, float max_z);
-    bool check_outside_state(DynamicPrintConfig* config)
-        %code%{ 
-                RETVAL = THIS->check_outside_state(config);
-        %};
     
     void reset_outside_state();    
     void update_colors_by_extruder(DynamicPrintConfig* config);