Split off lots of editor functionality into new abstract INodeEditor class and viewport functionality into CBasicViewport class; added viewport subclasses and undo/redo system in the World Editor

UI/undo/CScaleNodeCommand.h

@@ -0,0 +1,34 @@
+#ifndef CSCALENODECOMMAND_H
+#define CSCALENODECOMMAND_H
+
+#include <QUndoCommand>
+#include <QList>
+#include <Scene/CSceneNode.h>
+#include "../INodeEditor.h"
+
+class CScaleNodeCommand : public QUndoCommand
+{
+    struct SNodeScale
+    {
+        CSceneNode *pNode;
+        CVector3f initialPos;
+        CVector3f initialScale;
+        CVector3f newPos;
+        CVector3f newScale;
+    };
+    QList<SNodeScale> mNodeList;
+    INodeEditor *mpEditor;
+    bool mCommandEnded;
+
+public:
+    CScaleNodeCommand();
+    CScaleNodeCommand(INodeEditor *pEditor, const QList<CSceneNode*>& nodes, const CVector3f& pivot, const CVector3f& delta);
+    ~CScaleNodeCommand();
+    int id() const;
+    bool mergeWith(const QUndoCommand *other);
+    void undo();
+    void redo();
+    static CScaleNodeCommand* End();
+};
+
+#endif // CScaleNODECOMMAND_H