simplify RotationItem access

GUI/Model/Sample/RotationItems.h

@@ -30,6 +30,7 @@ public:
     RotMatrix rotation() const;
 
     virtual void serialize(Serializer& s) = 0;
+    virtual DoubleDescriptors rotationValues() const = 0;
 
 protected:
     RotationItem();
@@ -40,6 +41,7 @@ class XRotationItem : public RotationItem {
 public:
     XRotationItem();
     void serialize(Serializer& s) override;
+    DoubleDescriptors rotationValues() const override { return {m_angle}; };
 
     DoubleDescriptor angle() const;
 
@@ -54,6 +56,7 @@ class YRotationItem : public RotationItem {
 public:
     YRotationItem();
     void serialize(Serializer& s) override;
+    DoubleDescriptors rotationValues() const override { return {m_angle}; };
 
     DoubleDescriptor angle() const;
 
@@ -68,6 +71,7 @@ class ZRotationItem : public RotationItem {
 public:
     ZRotationItem();
     void serialize(Serializer& s) override;
+    DoubleDescriptors rotationValues() const override { return {m_angle}; };
 
     DoubleDescriptor angle() const;
 
@@ -82,6 +86,7 @@ class EulerRotationItem : public RotationItem {
 public:
     EulerRotationItem();
     void serialize(Serializer& s) override;
+    DoubleDescriptors rotationValues() const override { return {m_alpha, m_beta, m_gamma}; };
 
     DoubleDescriptor alpha() const;
     DoubleDescriptor beta() const;

GUI/View/SampleDesigner/LayerEditorUtils.cpp

@@ -147,16 +147,7 @@ DoubleDescriptors LayerEditorUtils::doubleDescriptorsOfItem(RotationItem* item)
     if (!item)
         return {};
 
-    if (auto* r = dynamic_cast<XRotationItem*>(item))
-        return {r->angle()};
-    if (auto* r = dynamic_cast<YRotationItem*>(item))
-        return {r->angle()};
-    if (auto* r = dynamic_cast<ZRotationItem*>(item))
-        return {r->angle()};
-    if (auto* r = dynamic_cast<EulerRotationItem*>(item))
-        return {r->alpha(), r->beta(), r->gamma()};
-
-    return {};
+    return item->rotationValues();
 }
 
 DoubleDescriptors LayerEditorUtils::doubleDescriptorsOfItem(FTDistribution2DItem* item)