Implement generic mesh::request_property templated on entity type.

src/OpenVolumeMesh/Core/BaseProperty.hh

@@ -55,9 +55,10 @@ class BaseProperty {
 public:
     friend class ResourceManager;
 
-    explicit BaseProperty(ResourceManager& _resMan) : resMan_(&_resMan) {}
+    explicit BaseProperty(ResourceManager* _resMan) : resMan_(_resMan) {}
 
-    BaseProperty(const BaseProperty& _cpy) : resMan_(_cpy.resMan_) {}
+    BaseProperty(BaseProperty&& _other) = default;
+    BaseProperty(const BaseProperty& _other) = default;
 
     BaseProperty& operator=(const BaseProperty& _cpy) = delete;
 

src/OpenVolumeMesh/Core/PropertyDefines.hh

@@ -84,6 +84,10 @@ template <> const std::string entityTypeName<Entity::Mesh>();
 template<typename T, typename Entity>
 class PropertyTT : public PropertyPtr<OpenVolumeMeshPropertyT<T>, Entity> {
 public:
+    template<typename MeshT>
+    PropertyTT(MeshT *mesh, const std::string& _name, const T _def = T())
+        : PropertyTT(std::move(mesh->template request_property<T, Entity>(_name, _def)))
+    {}
     using PropertyHandleT = OpenVolumeMesh::PropHandleT<Entity>;
     PropertyTT(const std::string& _name, ResourceManager& _resMan, PropertyHandleT _handle, const T _def = T());
     virtual ~PropertyTT() = default;

src/OpenVolumeMesh/Core/PropertyPtr.hh

@@ -69,6 +69,8 @@ public:
 
     using EntityHandleT = HandleT<Entity>;
 
+    /// Constructor
+    PropertyPtr() : BaseProperty(nullptr) {}
     /// Constructor
     PropertyPtr(PropT* _ptr, ResourceManager& _resMan, PropHandleT<Entity> _handle);
 

src/OpenVolumeMesh/Core/PropertyPtrT_impl.hh

@@ -42,7 +42,7 @@ namespace OpenVolumeMesh {
 
 template <class PropT, typename Entity>
 PropertyPtr<PropT,Entity>::PropertyPtr(PropT* _ptr, ResourceManager& _resMan, PropHandleT<Entity> _handle) :
-    ptr::shared_ptr<PropT>(_ptr), BaseProperty(_resMan) {
+    ptr::shared_ptr<PropT>(_ptr), BaseProperty(&_resMan) {
     ptr::shared_ptr<PropT>::get()->set_handle(_handle);
 }
 

src/OpenVolumeMesh/Core/ResourceManager.hh

@@ -132,6 +132,12 @@ public:
     /// Get number of cells in mesh
     virtual size_t n_cells() const = 0;
 
+
+    template<typename T,
+             typename EntityTag
+             >
+    PropertyTT<T, EntityTag> request_property(const std::string& _name = std::string(), const T _def = T());
+
     template<class T> VertexPropertyT<T> request_vertex_property(const std::string& _name = std::string(), const T _def = T());
 
     template<class T> EdgePropertyT<T> request_edge_property(const std::string& _name = std::string(), const T _def = T());
@@ -146,6 +152,7 @@ public:
 
     template<class T> MeshPropertyT<T> request_mesh_property(const std::string& _name = std::string(), const T _def = T());
 
+
 private:
 
     void release_property(VertexPropHandle _handle);
@@ -178,19 +185,8 @@ public:
 
     size_t n_mesh_props() const { return mesh_props_.size(); }
 
-    template<class T> void set_persistent(VertexPropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(EdgePropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(HalfEdgePropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(FacePropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(HalfFacePropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(CellPropertyT<T>& _prop, bool _flag = true);
-
-    template<class T> void set_persistent(MeshPropertyT<T>& _prop, bool _flag = true);
+    template<typename T, class EntityTag>
+    void set_persistent(PropertyTT<T, EntityTag>& _prop, bool _flag = true);
 
     typedef std::vector<BaseProperty*> Properties;
 
@@ -314,9 +310,6 @@ private:
     template<class StdVecT, class PropT, class HandleT, class T>
     PropT request_property(StdVecT& _vec, const std::string& _name, size_t _size, const T _def = T());
 
-    template<class PropT>
-    void set_persistentT(PropT& _prop, bool _flag);
-
     template<class StdVecT>
     void clearVec(StdVecT& _vec);
 

src/OpenVolumeMesh/Core/ResourceManagerT_impl.hh

@@ -117,53 +117,55 @@ PropT ResourceManager::request_property(StdVecT& _vec, const std::string& _name,
     return *prop;
 }
 
-template<class T>
-void ResourceManager::set_persistent(VertexPropertyT<T>& _prop, bool _flag) {
+// request_property: work around C++ currently now allowing partial specialisation on functions by using structs:
 
-    set_persistentT(_prop, _flag);
-}
+template<class T, typename EntityTag>
+struct request_property_impl {
+    static PropertyTT<T, EntityTag> _(ResourceManager* /*resman*/, const std::string& /*_name*/, const T /*_def*/);
+};
 
 template<class T>
-void ResourceManager::set_persistent(EdgePropertyT<T>& _prop, bool _flag) {
-
-    set_persistentT(_prop, _flag);
-}
-
-template<class T>
-void ResourceManager::set_persistent(HalfEdgePropertyT<T>& _prop, bool _flag) {
-
-    set_persistentT(_prop, _flag);
-}
-
+struct request_property_impl<T, Entity::Edge>{
+    static PropertyTT<T, Entity::Edge> _(ResourceManager *resman, const std::string &_name, const T _def) {
+        return resman->request_edge_property<T>(_name, _def);
+    }
+};
 template<class T>
-void ResourceManager::set_persistent(FacePropertyT<T>& _prop, bool _flag) {
-
-    set_persistentT(_prop, _flag);
-}
-
+struct request_property_impl<T, Entity::HalfEdge>{
+    static PropertyTT<T, Entity::HalfEdge> _(ResourceManager *resman, const std::string &_name, const T _def) {
+        return resman->request_halfedge_property<T>(_name, _def);
+    }
+};
 template<class T>
-void ResourceManager::set_persistent(HalfFacePropertyT<T>& _prop, bool _flag) {
-
-    set_persistentT(_prop, _flag);
-}
-
+struct request_property_impl<T, Entity::Face>{
+    static PropertyTT<T, Entity::Face> _(ResourceManager *resman, const std::string &_name, const T _def) {
+        return resman->request_face_property<T>(_name, _def);
+    }
+};
 template<class T>
-void ResourceManager::set_persistent(CellPropertyT<T>& _prop, bool _flag) {
-
-    set_persistentT(_prop, _flag);
-}
-
+struct request_property_impl<T, Entity::HalfFace>{
+    static PropertyTT<T, Entity::HalfFace> _(ResourceManager *resman, const std::string &_name, const T _def) {
+        return resman->request_halfface_property<T>(_name, _def);
+    }
+};
 template<class T>
-void ResourceManager::set_persistent(MeshPropertyT<T>& _prop, bool _flag) {
+struct request_property_impl<T, Entity::Cell>{
+    static PropertyTT<T, Entity::Cell> _(ResourceManager *resman, const std::string &_name, const T _def) {
+        return resman->request_cell_property<T>(_name, _def);
+    }
+};
 
-    set_persistentT(_prop, _flag);
+template<typename T, typename EntityTag>
+PropertyTT<T, EntityTag> ResourceManager::request_property(const std::string& _name, const T _def)
+{
+    return request_property_impl<T, EntityTag>::_(this, _name, _def);
 }
 
-template<class PropT>
-void ResourceManager::set_persistentT(PropT& _prop, bool _flag) {
 
+template<typename T, class EntityTag>
+void ResourceManager::set_persistent(PropertyTT<T, EntityTag>& _prop, bool _flag)
+{
     if(_flag == _prop->persistent()) return;
-
     _prop->set_persistent(_flag);
 }