Assignment operators for Material

Redmine: #1858

Core/Material/Material.cpp

@@ -12,6 +12,12 @@ Material::Material(std::unique_ptr<BaseMaterialImpl> material_impl)
     : m_material_impl(std::move(material_impl))
 {}
 
+Material& Material::operator=(const Material& other)
+{
+    m_material_impl.reset(other.m_material_impl->clone());
+    return *this;
+}
+
 Material Material::inverted() const
 {
     std::unique_ptr<BaseMaterialImpl> material_impl(m_material_impl->inverted());

Core/Material/Material.h

@@ -43,6 +43,12 @@ public:
     Material(std::unique_ptr<BaseMaterialImpl> material_impl);
 #endif //SWIG
 
+    //! Material copy assignment
+    Material& operator=(const Material& other);
+
+    //! Material move assignment
+    Material& operator=(Material&& other) = default;
+
     //! Constructs a material with inverted magnetization
     Material inverted() const;