Implement ViewROI and base classes (#287)

* Implement ViewROI and base classes

* Clean up Orientable header

* Move tgl to tgl subdirectory, and use target_include_directories

* Move classes to submodules

* Fix some missed references

* Fix/match UpdateWorldData

* Renaming / removing MxTypes / refactoring

* Consistent naming for Matrix

* Adjust format action

* Add Vector3/Vector4 to Data vector

* Add TGL comment

* Add a comment about Matrix4Impl

* Add ROI comment

---------

Co-authored-by: Anonymous Maarten <anonymous.maarten@gmail.com>
Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/viewmanager/viewlodlist.h

@@ -0,0 +1,116 @@
+#ifndef VIEWLODLIST_H
+#define VIEWLODLIST_H
+
+#include "../compat.h"
+#include "../realtime/lodlist.h"
+#include "assert.h"
+
+#pragma warning(disable : 4786)
+
+class ViewLOD;
+class ViewLODListManager;
+
+//////////////////////////////////////////////////////////////////////////////
+// ViewLODList
+//
+// An ViewLODList is an LODList that is shared among instances of the "same ROI".
+//
+// ViewLODLists are managed (created and destroyed) by ViewLODListManager.
+//
+
+class ViewLODList : public LODList<ViewLOD> {
+	friend ViewLODListManager;
+
+protected:
+	ViewLODList(size_t capacity);
+	~ViewLODList();
+
+public:
+	inline int AddRef();
+	inline int Release();
+
+#ifdef _DEBUG
+	void Dump(void (*pTracer)(const char*, ...)) const;
+#endif
+
+private:
+	int m_refCount;
+	ViewLODListManager* m_owner;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+//
+
+// ??? for now, until we have symbol management
+typedef const char* ROIName;
+struct ROINameComparator {
+	bool operator()(const ROIName& rName1, const ROIName& rName2) const
+	{
+		return strcmp((const char*) rName1, (const char*) rName2) > 0;
+	}
+};
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// ViewLODListManager
+//
+// ViewLODListManager manages creation and sharing of ViewLODLists.
+// It stores ViewLODLists under a name, the name of the ROI where
+// the ViewLODList belongs.
+
+class ViewLODListManager {
+
+	typedef map<ROIName, ViewLODList*, ROINameComparator> ViewLODListMap;
+
+public:
+	ViewLODListManager();
+	virtual ~ViewLODListManager();
+
+	// ??? should LODList be const
+
+	// creates an LODList with room for lodCount LODs for a named ROI
+	// returned LODList has a refCount of 1, i.e. caller must call Release()
+	// when it no longer holds on to the list
+	ViewLODList* Create(const ROIName&, int lodCount);
+
+	// returns an LODList for a named ROI
+	// returned LODList's refCount is increased, i.e. caller must call Release()
+	// when it no longer holds on to the list
+	ViewLODList* Lookup(const ROIName&) const;
+	void Destroy(ViewLODList* lodList);
+
+#ifdef _DEBUG
+	void Dump(void (*pTracer)(const char*, ...)) const;
+#endif
+
+private:
+	ViewLODListMap m_map;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// ViewLODList implementation
+
+inline ViewLODList::ViewLODList(size_t capacity) : LODList<ViewLOD>(capacity), m_refCount(0)
+{
+}
+
+inline ViewLODList::~ViewLODList()
+{
+	assert(m_refCount == 0);
+}
+
+inline int ViewLODList::AddRef()
+{
+	return ++m_refCount;
+}
+
+inline int ViewLODList::Release()
+{
+	assert(m_refCount > 0);
+	if (!--m_refCount)
+		m_owner->Destroy(this);
+	return m_refCount;
+}
+
+#endif // VIEWLODLIST_H