Add Rendering wire frame when simplify

src/slic3r/GUI/Gizmos/GLGizmoPainterBase.hpp

@@ -57,30 +57,32 @@ private:
     std::array<GLIndexedVertexArray, 3> m_varrays;
 };
 
+class GLGizmoTransparentRender 
+{
+public:
+    // Following function renders the triangles and cursor. Having this separated
+    // from usual on_render method allows to render them before transparent
+    // objects, so they can be seen inside them. The usual on_render is called
+    // after all volumes (including transparent ones) are rendered.
+    virtual void render_painter_gizmo() const = 0;
+};
 
 // Following class is a base class for a gizmo with ability to paint on mesh
 // using circular blush (such as FDM supports gizmo and seam painting gizmo).
 // The purpose is not to duplicate code related to mesh painting.
-class GLGizmoPainterBase : public GLGizmoBase
+class GLGizmoPainterBase : public GLGizmoTransparentRender, public GLGizmoBase
 {
 private:
     ObjectID m_old_mo_id;
     size_t m_old_volumes_size = 0;
     void on_render() override {}
     void on_render_for_picking() override {}
-
 public:
     GLGizmoPainterBase(GLCanvas3D& parent, const std::string& icon_filename, unsigned int sprite_id);
     ~GLGizmoPainterBase() override = default;
     virtual void set_painter_gizmo_data(const Selection& selection);
     virtual bool gizmo_event(SLAGizmoEventType action, const Vec2d& mouse_position, bool shift_down, bool alt_down, bool control_down);
 
-    // Following function renders the triangles and cursor. Having this separated
-    // from usual on_render method allows to render them before transparent objects,
-    // so they can be seen inside them. The usual on_render is called after all
-    // volumes (including transparent ones) are rendered.
-    virtual void render_painter_gizmo() const = 0;
-
 protected:
     void render_triangles(const Selection& selection, const bool use_polygon_offset_fill = true) const;
     void render_cursor() const;

src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp

@@ -15,7 +15,7 @@ namespace Slic3r::GUI {
 GLGizmoSimplify::GLGizmoSimplify(GLCanvas3D &       parent,
                                  const std::string &icon_filename,
                                  unsigned int       sprite_id)
-    : GLGizmoPainterBase(parent, icon_filename, -1)
+    : GLGizmoBase(parent, icon_filename, -1)
     , m_state(State::settings)
     , m_is_valid_result(false)
     , m_exist_preview(false)
@@ -29,6 +29,9 @@ GLGizmoSimplify::GLGizmoSimplify(GLCanvas3D &       parent,
     , tr_preview(_u8L("Preview"))
     , tr_detail_level(_u8L("Detail level"))
     , tr_decimate_ratio(_u8L("Decimate ratio"))
+
+    , m_wireframe_VBO_id(0)
+    , m_wireframe_IBO_id(0)
 {}
 
 GLGizmoSimplify::~GLGizmoSimplify() { 
@@ -59,7 +62,11 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
     int obj_index;
     ModelVolume *act_volume = get_selected_volume(&obj_index);
     if (act_volume == nullptr) {
-        close(); 
+        switch (m_state) {
+        case State::settings: close(); break;
+        case State::canceling: break;
+        default: m_state = State::canceling;
+        }
         return;
     }
 
@@ -79,6 +86,7 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
         m_configuration.fix_count_by_ratio(m_volume->mesh().its.indices.size());
         m_is_valid_result = false;
         m_exist_preview   = false;
+        init_wireframe(m_volume->mesh().its);
 
         if (change_window_position) {
             ImVec2 pos = ImGui::GetMousePos();
@@ -240,7 +248,7 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
         // set m_state must be before close() !!!
         m_state = State::settings;
         if (close_on_end) after_apply();
-        
+        else init_wireframe(m_volume->mesh().its);
         // Fix warning icon in object list
         wxGetApp().obj_list()->update_item_error_icon(m_obj_index, -1);
     }
@@ -317,7 +325,6 @@ void GLGizmoSimplify::process()
 }
 
 void GLGizmoSimplify::set_its(indexed_triangle_set &its) {
-    //init_contours(its);
     m_volume->set_mesh(its);
     m_volume->calculate_convex_hull();
     m_volume->set_new_unique_id();
@@ -334,10 +341,18 @@ void GLGizmoSimplify::on_set_state()
 {
     // Closing gizmo. e.g. selecting another one
     if (GLGizmoBase::m_state == GLGizmoBase::Off) {
-        bool exist_selected_object = is_selected_object();
+        // can appear when delete objects
+        bool empty_selection = m_parent.get_selection().is_empty();
+
+        // cancel processing
+        if (empty_selection && 
+            m_state != State::settings &&
+            m_state != State::canceling)  
+            m_state = State::canceling;
+
         // refuse outgoing during simlification
         // object is not selected when it is deleted(cancel and close gizmo)
-        if (m_state != State::settings && exist_selected_object) {
+        if (m_state != State::settings && !empty_selection) {
             GLGizmoBase::m_state = GLGizmoBase::On;
             auto notification_manager = wxGetApp().plater()->get_notification_manager();
             notification_manager->push_notification(
@@ -348,11 +363,14 @@ void GLGizmoSimplify::on_set_state()
         }
 
         // revert preview
-        if (m_exist_preview && exist_selected_object) {
+        if (m_exist_preview) {
+            m_exist_preview = false;
+            if (exist_volume(m_volume)) {
                 set_its(*m_original_its);
-            m_parent.reload_scene(true);
+                m_parent.reload_scene(false);
                 m_need_reload = false;
             }
+        }
 
         // invalidate selected model
         m_volume = nullptr;
@@ -389,20 +407,27 @@ void GLGizmoSimplify::request_rerender() {
     });
 }
 
-bool GLGizmoSimplify::is_selected_object(int *object_idx)
+bool GLGizmoSimplify::exist_volume(ModelVolume *volume) {
-{
+    auto objs = wxGetApp().plater()->model().objects;
-    int index = (object_idx != nullptr) ? *object_idx :
+    for (const auto &obj : objs) {
-        m_parent.get_selection().get_object_idx();
+        const auto &vlms = obj->volumes;
-    // no selected object --> can appear after delete model
+        auto        item = std::find(vlms.begin(), vlms.end(), volume);
-    if (index < 0) {
+        if (item != vlms.end()) return true;
-        switch (m_state) {
-        case State::settings: close(); break;
-        case State::canceling: break;
-        default: m_state = State::canceling;
     }
     return false;
 }
-    return true;
+
+ModelVolume *GLGizmoSimplify::get_selected_volume(int *object_idx_ptr) const
+{
+    const Selection &selection  = m_parent.get_selection();
+    int object_idx = selection.get_object_idx();
+    if (object_idx_ptr != nullptr) *object_idx_ptr = object_idx;
+    if (object_idx < 0) return nullptr;
+    ModelObjectPtrs &objs = wxGetApp().plater()->model().objects;
+    if (objs.size() <= object_idx) return nullptr;
+    ModelObject *obj = objs[object_idx];
+    if (obj->volumes.empty()) return nullptr;
+    return obj->volumes.front();
 }
 
 void GLGizmoSimplify::init_wireframe(const indexed_triangle_set &its)
@@ -436,21 +461,16 @@ void GLGizmoSimplify::init_wireframe(const indexed_triangle_set &its)
     glsafe(::glBindBuffer(GL_ARRAY_BUFFER, 0));
 }
 
-void GLGizmoSimplify::render_wireframe()
+void GLGizmoSimplify::render_wireframe() const
 {
-    const Selection &selection  = m_parent.get_selection();
+    // is initialized?
-    int              object_idx = selection.get_object_idx();
+    if (m_wireframe_VBO_id == 0 || m_wireframe_IBO_id == 0) return;
-    if (!is_selected_object(&object_idx)) return;
-
-    const GLVolume* vol = selection.get_volume(*selection.get_instance_idxs().begin());
-    GLuint vbo_id = vol->indexed_vertex_array.vertices_and_normals_interleaved_VBO_id;
-    ModelObject *obj = wxGetApp().plater()->model().objects[object_idx];
-    ModelVolume *act_volume = obj->volumes.front();
-
-    init_wireframe(act_volume->mesh().its);
 
+    ModelVolume *act_volume = get_selected_volume();
+    if (act_volume == nullptr) return;    
     const Transform3d trafo_matrix = 
-        obj->instances[selection.get_instance_idx()]->get_transformation().get_matrix() *
+        act_volume->get_object()->instances[m_parent.get_selection().get_instance_idx()]
+        ->get_transformation().get_matrix() *
         act_volume->get_matrix();
 
     glsafe(::glPushMatrix());
@@ -461,14 +481,8 @@ void GLGizmoSimplify::render_wireframe()
     glsafe(::glDepthFunc(GL_LEQUAL));
     glsafe(::glLineWidth(1.0f));
 
-    /*
-    // bad indices
-    glsafe(::glBindBuffer(GL_ARRAY_BUFFER, vbo_id));
-    glsafe(::glVertexPointer(3, GL_FLOAT, 6 * sizeof(float), (const void*)(3 * sizeof(float))));
-    /*/
     glsafe(::glBindBuffer(GL_ARRAY_BUFFER, m_wireframe_VBO_id));
     glsafe(::glVertexPointer(3, GL_FLOAT, 3 * sizeof(float), nullptr));
-    //*/
     glsafe(::glEnableClientState(GL_VERTEX_ARRAY));
 
     glsafe(::glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_wireframe_IBO_id));
@@ -497,17 +511,4 @@ void GLGizmoSimplify::free_gpu()
     }
 }
 
-ModelVolume *GLGizmoSimplify::get_selected_volume(int *object_idx_ptr)
-{
-    const Selection &selection  = m_parent.get_selection();
-    int object_idx = selection.get_object_idx();
-    if (object_idx_ptr != nullptr) *object_idx_ptr = object_idx;
-    if (!is_selected_object(&object_idx)) return nullptr;
-    ModelObjectPtrs &objs = wxGetApp().plater()->model().objects;
-    if (objs.size() <= object_idx) return nullptr;
-    ModelObject *obj = objs[object_idx];
-    if (obj->volumes.empty()) return nullptr;
-    return obj->volumes.front();    
-}
-
 } // namespace Slic3r::GUI

src/slic3r/GUI/Gizmos/GLGizmoSimplify.hpp

@@ -19,7 +19,7 @@ class ModelVolume;
 namespace GUI {
 
 
-class GLGizmoSimplify : public GLGizmoPainterBase // GLGizmoBase
+class GLGizmoSimplify: public GLGizmoBase, public GLGizmoTransparentRender // GLGizmoBase
 {    
 public:
     GLGizmoSimplify(GLCanvas3D& parent, const std::string& icon_filename, unsigned int sprite_id);
@@ -35,7 +35,7 @@ protected:
     virtual void on_set_state() override;
 
     // GLGizmoPainterBase
-    virtual void render_painter_gizmo() const override{ const_cast<GLGizmoSimplify*>(this)->render_wireframe(); }
+    virtual void render_painter_gizmo() const override{ render_wireframe(); }
 private:
     void after_apply();
     void close();
@@ -43,8 +43,10 @@ private:
     void set_its(indexed_triangle_set &its);
     void create_gui_cfg();
     void request_rerender();
-    bool is_selected_object(int *object_idx_ptr = nullptr);
+    ModelVolume *get_selected_volume(int *object_idx = nullptr) const;
-    ModelVolume *get_selected_volume(int *object_idx = nullptr);
+
+    // return false when volume was deleted
+    static bool exist_volume(ModelVolume *volume);
 
     std::atomic_bool m_is_valid_result; // differ what to do in apply
     std::atomic_bool m_exist_preview;   // set when process end
@@ -108,7 +110,7 @@ private:
     const std::string tr_decimate_ratio;
 
     // rendering wireframe
-    void render_wireframe();
+    void render_wireframe() const;
     void init_wireframe(const indexed_triangle_set &its);
     void free_gpu();
     GLuint m_wireframe_VBO_id, m_wireframe_IBO_id;

src/slic3r/GUI/Gizmos/GLGizmosManager.cpp

@@ -52,8 +52,6 @@ std::vector<size_t> GLGizmosManager::get_selectable_idxs() const
     return out;
 }
 
-
-
 size_t GLGizmosManager::get_gizmo_idx_from_mouse(const Vec2d& mouse_pos) const
 {
     if (! m_enabled)
@@ -485,7 +483,7 @@ void GLGizmosManager::render_painter_gizmo() const
     if (!m_enabled || m_current == Undefined)
         return;
 
-    auto* gizmo = dynamic_cast<GLGizmoPainterBase*>(get_current());
+    auto *gizmo = dynamic_cast<GLGizmoTransparentRender*>(get_current());
     assert(gizmo); // check the precondition
     gizmo->render_painter_gizmo();
 }