SupportsClipper implementation

src/slic3r/GUI/Gizmos/GLGizmoHollow.cpp

@@ -119,6 +119,7 @@ void GLGizmoHollow::on_render() const
     m_selection_rectangle.render(m_parent);
     //render_clipping_plane(selection);
     m_c->object_clipper()->render_cut();
+    m_c->supports_clipper()->render_cut();
 
     glsafe(::glDisable(GL_BLEND));
 }
@@ -929,7 +930,8 @@ CommonGizmosDataID GLGizmoHollow::on_get_requirements() const
               | int(CommonGizmosDataID::InstancesHider)
               | int(CommonGizmosDataID::Raycaster)
               | int(CommonGizmosDataID::HollowedMesh)
-              | int(CommonGizmosDataID::ObjectClipper));
+              | int(CommonGizmosDataID::ObjectClipper)
+              | int(CommonGizmosDataID::SupportsClipper));
 }
 
 

src/slic3r/GUI/Gizmos/GLGizmosCommon.cpp

@@ -18,12 +18,12 @@ CommonGizmosDataPool::CommonGizmosDataPool(GLCanvas3D* canvas)
     : m_canvas(canvas)
 {
     using c = CommonGizmosDataID;
-    m_data[c::SelectionInfo].reset(       new SelectionInfo(this));
-    m_data[c::InstancesHider].reset(      new InstancesHider(this));
-    m_data[c::HollowedMesh].reset(        new HollowedMesh(this));
-    m_data[c::Raycaster].reset(           new Raycaster(this));
-    m_data[c::ObjectClipper].reset(new ObjectClipper(this));
-    //m_data[c::SupportsClipper].reset(     new SupportsClipper(this));
+    m_data[c::SelectionInfo].reset(   new SelectionInfo(this));
+    m_data[c::InstancesHider].reset(  new InstancesHider(this));
+    m_data[c::HollowedMesh].reset(    new HollowedMesh(this));
+    m_data[c::Raycaster].reset(       new Raycaster(this));
+    m_data[c::ObjectClipper].reset(   new ObjectClipper(this));
+    m_data[c::SupportsClipper].reset( new SupportsClipper(this));
 
 }
 
@@ -77,6 +77,13 @@ ObjectClipper* CommonGizmosDataPool::object_clipper() const
     return oc->is_valid() ? oc : nullptr;
 }
 
+SupportsClipper* CommonGizmosDataPool::supports_clipper() const
+{
+    SupportsClipper* sc = dynamic_cast<SupportsClipper*>(m_data.at(CommonGizmosDataID::SupportsClipper).get());
+    assert(sc);
+    return sc->is_valid() ? sc : nullptr;
+}
+
 #ifndef NDEBUG
 // Check the required resources one by one and return true if all
 // dependencies are met.
@@ -346,5 +353,98 @@ void ObjectClipper::set_position(double pos, bool keep_normal)
 
 
 
+void SupportsClipper::on_update()
+{
+    const ModelObject* mo = get_pool()->selection_info()->model_object();
+    if (! mo)
+        return;
+
+    const GLCanvas3D* canvas = get_pool()->get_canvas();
+    const PrintObjects& print_objects = canvas->sla_print()->objects();
+    const SLAPrintObject* print_object = m_print_object_idx != -1
+            ? print_objects[m_print_object_idx]
+            : nullptr;
+
+    // Find the respective SLAPrintObject.
+    if (m_print_object_idx < 0 || m_print_objects_count != int(print_objects.size())) {
+        m_print_objects_count = print_objects.size();
+        m_print_object_idx = -1;
+        for (const SLAPrintObject* po : print_objects) {
+            ++m_print_object_idx;
+            if (po->model_object()->id() == mo->id()) {
+                print_object = po;
+                break;
+            }
+        }
+    }
+
+    if (print_object
+     && print_object->is_step_done(slaposSupportTree)
+     && ! print_object->support_mesh().empty())
+    {
+        // If the supports are already calculated, save the timestamp of the respective step
+        // so we can later tell they were recalculated.
+        size_t timestamp = print_object->step_state_with_timestamp(slaposSupportTree).timestamp;
+        if (! m_clipper || timestamp != m_old_timestamp) {
+            // The timestamp has changed.
+            m_clipper.reset(new MeshClipper);
+            // The mesh should already have the shared vertices calculated.
+            m_clipper->set_mesh(print_object->support_mesh());
+            m_old_timestamp = timestamp;
+        }
+    }
+    else
+        // The supports are not valid. We better dump the cached data.
+        m_clipper.reset();
+}
+
+
+void SupportsClipper::on_release()
+{
+    m_clipper.reset();
+    m_old_timestamp = 0;
+    m_print_object_idx = -1;
+}
+
+void SupportsClipper::render_cut() const
+{
+    const CommonGizmosDataObjects::ObjectClipper* ocl = get_pool()->object_clipper();
+    if (ocl->get_position() == 0.
+     || ! get_pool()->instances_hider()->are_supports_shown()
+     || ! m_clipper)
+        return;
+
+    const SelectionInfo* sel_info = get_pool()->selection_info();
+    const ModelObject* mo = sel_info->model_object();
+    Geometry::Transformation inst_trafo = mo->instances[sel_info->get_active_instance()]->get_transformation();
+    Geometry::Transformation vol_trafo  = mo->volumes.front()->get_transformation();
+    Geometry::Transformation trafo = inst_trafo;// * vol_trafo;
+    trafo.set_offset(trafo.get_offset() + Vec3d(0., 0., sel_info->get_sla_shift()));
+
+
+    // Get transformation of supports
+    Geometry::Transformation supports_trafo = trafo;
+    supports_trafo.set_offset(Vec3d(trafo.get_offset()(0), trafo.get_offset()(1), sel_info->get_sla_shift()));
+    supports_trafo.set_rotation(Vec3d(0., 0., trafo.get_rotation()(2)));
+    // I don't know why, but following seems to be correct.
+    supports_trafo.set_mirror(Vec3d(trafo.get_mirror()(0) * trafo.get_mirror()(1) * trafo.get_mirror()(2),
+                                    1,
+                                    1.));
+
+    m_clipper->set_plane(*ocl->get_clipping_plane());
+    m_clipper->set_transformation(supports_trafo);
+
+    if (! m_clipper->get_triangles().empty()) {
+        ::glPushMatrix();
+        ::glColor3f(1.0f, 0.f, 0.37f);
+        ::glBegin(GL_TRIANGLES);
+        for (const Vec3f& point : m_clipper->get_triangles())
+            ::glVertex3f(point(0), point(1), point(2));
+        ::glEnd();
+        ::glPopMatrix();
+    }
+}
+
+
 } // namespace GUI
 } // namespace Slic3r

src/slic3r/GUI/Gizmos/GLGizmosCommon.hpp

@@ -26,6 +26,7 @@ namespace CommonGizmosDataObjects {
     class HollowedMesh;
     class Raycaster;
     class ObjectClipper;
+    class SupportsClipper;
 }
 
 // Some of the gizmos use the same data that need to be updated ocassionally.
@@ -65,6 +66,7 @@ public:
     CommonGizmosDataObjects::HollowedMesh* hollowed_mesh() const;
     CommonGizmosDataObjects::Raycaster* raycaster() const;
     CommonGizmosDataObjects::ObjectClipper* object_clipper() const;
+    CommonGizmosDataObjects::SupportsClipper* supports_clipper() const;
 
 
     GLCanvas3D* get_canvas() const { return m_canvas; }
@@ -226,7 +228,6 @@ public:
     CommonGizmosDataID get_dependencies() const override { return CommonGizmosDataID::SelectionInfo; }
 #endif // NDEBUG
 
-    MeshClipper* get_clipper() const { return m_clipper.get(); }
     void set_position(double pos, bool keep_normal);
     double get_position() const { return m_clp_ratio; }
     ClippingPlane* get_clipping_plane() const { return m_clp.get(); }
@@ -243,17 +244,6 @@ private:
     std::unique_ptr<ClippingPlane> m_clp;
     double m_clp_ratio = 0.;
     double m_active_inst_bb_radius = 0.;
-
-};
-
-/*
-
-class ClippingPlaneWrapper : public CommonGizmosDataBase
-{
-public:
-    explicit ClippingPlaneWrapper(CommonGizmosDataPool* cgdp)
-        : CommonGizmosDataBase(cgdp) {}
-    void update(bool required) override;
 };
 
 
@@ -263,10 +253,28 @@ class SupportsClipper : public CommonGizmosDataBase
 public:
     explicit SupportsClipper(CommonGizmosDataPool* cgdp)
         : CommonGizmosDataBase(cgdp) {}
-    void update(bool required) override;
-};
+#ifndef NDEBUG
+    CommonGizmosDataID get_dependencies() const override {
+        return CommonGizmosDataID(
+                    int(CommonGizmosDataID::SelectionInfo)
+                  | int(CommonGizmosDataID::ObjectClipper)
+               );
+    }
+#endif // NDEBUG
 
-*/
+    void render_cut() const;
+
+
+protected:
+    void on_update() override;
+    void on_release() override;
+
+private:
+    size_t m_old_timestamp = 0;
+    int m_print_object_idx = -1;
+    int m_print_objects_count = 0;
+    std::unique_ptr<MeshClipper> m_clipper;
+};
 
 } // namespace CommonGizmosDataObjects