Make MesoCrystalItem::P_VECTOR_(A|B|C) private

GUI/Models/GUIDomainSampleVisitor.cpp

@@ -152,20 +152,21 @@ void GUIDomainSampleVisitor::visit(const MesoCrystal* sample)
 
 void GUIDomainSampleVisitor::visit(const Crystal* sample)
 {
-    SessionItem* mesocrystal_item = m_levelToParentItem[depth() - 1];
-    ASSERT(mesocrystal_item);
-    if (!mesocrystal_item->hasModelType<MesoCrystalItem>()) {
+    SessionItem* item = m_levelToParentItem[depth() - 1];
+    ASSERT(item);
+    if (!item->hasModelType<MesoCrystalItem>()) {
         throw Error("GUI::Model::ObjectBuilder::visit(const Crystal*) "
                     "-> Error. Parent is not a MesoCrystal");
     }
+    MesoCrystalItem* mesocrystal_item = polymorphic_cast<MesoCrystalItem*>(item);
     auto lattice = sample->transformedLattice();
     auto vector_a = lattice.getBasisVectorA();
     auto vector_b = lattice.getBasisVectorB();
     auto vector_c = lattice.getBasisVectorC();
 
-    mesocrystal_item->item<VectorItem>(MesoCrystalItem::P_VECTOR_A)->setVector(vector_a);
-    mesocrystal_item->item<VectorItem>(MesoCrystalItem::P_VECTOR_B)->setVector(vector_b);
-    mesocrystal_item->item<VectorItem>(MesoCrystalItem::P_VECTOR_C)->setVector(vector_c);
+    mesocrystal_item->setVectorA(vector_a);
+    mesocrystal_item->setVectorB(vector_b);
+    mesocrystal_item->setVectorC(vector_c);
 
     // Since there is no CrystalItem, set the parent map to the MesoCrystalItem
     m_levelToParentItem[depth()] = mesocrystal_item;

GUI/Models/MesoCrystalItem.cpp

@@ -135,3 +135,18 @@ ItemWithParticles* MesoCrystalItem::basisParticle() const
 {
     return dynamic_cast<ItemWithParticles*>(getItem(T_BASIS_PARTICLE));
 }
+
+void MesoCrystalItem::setVectorA(const kvector_t& vector_a)
+{
+    item<VectorItem>(P_VECTOR_A)->setVector(vector_a);
+}
+
+void MesoCrystalItem::setVectorB(const kvector_t& vector_b)
+{
+    item<VectorItem>(P_VECTOR_B)->setVector(vector_b);
+}
+
+void MesoCrystalItem::setVectorC(const kvector_t& vector_c)
+{
+    item<VectorItem>(P_VECTOR_C)->setVector(vector_c);
+}

GUI/Models/MesoCrystalItem.h

@@ -16,6 +16,7 @@
 #define BORNAGAIN_GUI_MODELS_MESOCRYSTALITEM_H
 
 #include "GUI/Models/ItemWithParticles.h"
+#include "Base/Vector/Vectors3D.h"
 #include "Sample/Lattice/Lattice3D.h"
 
 class FormFactorItem;
@@ -28,12 +29,11 @@ class BA_CORE_API_ MesoCrystalItem : public ItemWithParticles {
 private:
     static const QString P_OUTER_SHAPE;
     static const QString T_BASIS_PARTICLE;
-
-public:
     static const QString P_VECTOR_A;
     static const QString P_VECTOR_B;
     static const QString P_VECTOR_C;
 
+public:
     static const QString M_TYPE;
 
     MesoCrystalItem();
@@ -47,6 +47,10 @@ public:
     template <typename T> T* setOuterShapeType();
 
     ItemWithParticles* basisParticle() const;
+
+    void setVectorA(const kvector_t& vector_a);
+    void setVectorB(const kvector_t& vector_b);
+    void setVectorC(const kvector_t& vector_c);
 };
 
 template <typename T> T* MesoCrystalItem::setOuterShapeType()