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diff --git a/hammer/mapviewlogical.h b/hammer/mapviewlogical.h
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+++ b/hammer/mapviewlogical.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Data and functionality for the logical 2D view
+//
+//===========================================================================//
+
+#ifndef MAPVIEWLOGICAL_H
+#define MAPVIEWLOGICAL_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "MapView2DBase.h"
+#include "tier1/utlrbtree.h"
+#include "tier1/utlstack.h"
+
+class CWnd;
+class CView;
+class CMapAtom;
+class CMapClass;
+class CMapDoc;
+class CCamera;
+class CTitleWnd;
+class CEntityConnection;
+
+
+class CMapViewLogical : public CMapView2DBase
+{
+public:
+	// Other public methods
+	virtual void Render();
+
+protected:
+	CMapViewLogical();           // protected constructor used by dynamic creation
+	virtual ~CMapViewLogical();
+	DECLARE_DYNCREATE(CMapViewLogical)
+
+	virtual bool IsLogical() { return true; }
+	virtual void OnRenderListDirty();
+
+	// convert client view space to map world coordinates (2D versions for convenience) 
+	void WorldToClient( Vector2D &ptClient, const Vector2D &vWorld );
+	void ClientToWorld( Vector2D &vWorld, const Vector2D &vClient );
+	virtual void WorldToClient( Vector2D &ptClient, const Vector &vWorld );
+	virtual void ClientToWorld( Vector &vWorld, const Vector2D &vClient );
+
+	// Performs a selection which selects an object at the point as well as entities connected to outputs.
+	bool SelectAtCascading( const Vector2D &ptClient, bool bMakeFirst );
+
+private:
+	// timer IDs:
+	enum 
+	{ 
+		TIMER_CONNECTIONUPDATE = 2, 
+	};
+
+	typedef CUtlRBTree<CMapClass*, unsigned short> MapClassDict_t;
+
+	// Purpose: Builds up list of mapclasses to render
+	void AddToRenderLists( CMapClass *pObject );
+	void PopulateConnectionList( );
+
+	// Purpose: 
+	void RenderConnections(const bool bDrawSelected, const bool bAnySelected);
+
+	// Draws a wire from a particular point to a target
+	const color32 & GetWireColor(const char *pszName, const bool bSelected, const bool bBroken, const bool bAnySelected );
+	void DrawConnectingWire( float x, float y, CMapEntity *pSource, CEntityConnection *pConnection, CMapEntity *pTarget );
+
+	bool	m_bUpdateRenderObjects;	// Should I build a list of things to render?
+	CUtlVector<CMapClass *> m_RenderList;	// list of current rendered objects
+	CUtlVector<CMapClass *> m_ConnectionList;	// list of all objects which are in the render list of have connections to something in the renderlist
+	CUtlStack<CMapClass *> m_ConnectionUpdate;	// for iteratively determining connectivity
+	MapClassDict_t m_RenderDict;
+
+	// Overrides
+	// ClassWizard generated virtual function overrides
+	//{{AFX_VIRTUAL(CMapView2D)
+	protected:
+	virtual void OnInitialUpdate();     // first time after construct
+	//}}AFX_VIRTUAL
+
+	// Generated message map functions
+	//{{AFX_MSG(CMapView2D)
+	afx_msg void OnTimer(UINT nIDEvent);
+	//}}AFX_MSG
+
+	DECLARE_MESSAGE_MAP()
+};
+
+
+#endif // MAPVIEWLOGICAL_H