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hammer/ToolClipper.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef CLIPPER3D_H
+#define CLIPPER3D_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "MapClass.h"		// For CMapObjectList
+#include "Tool3D.h"
+#include "ToolInterface.h"
+#include "Render2D.h"
+#include "MapFace.h"
+
+
+class CMapSolid;
+
+
+//=============================================================================
+//
+// CClipGroup
+//
+
+class CClipGroup
+{
+public:
+    
+    enum { FRONT = 0, BACK };
+    
+    inline CClipGroup();
+    ~CClipGroup();
+
+    inline void SetOrigSolid( CMapSolid *pSolid );
+    inline CMapSolid *GetOrigSolid( void );
+
+    inline void SetClipSolid( CMapSolid *pSolid, int side );
+    inline CMapSolid *GetClipSolid( int side );
+
+private:
+
+    CMapSolid   *m_pOrigSolid;
+    CMapSolid   *m_pClipSolids[2];      // front, back
+};
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline CClipGroup::CClipGroup()
+{
+    m_pOrigSolid = NULL;
+    m_pClipSolids[0] = NULL;
+    m_pClipSolids[1] = NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CClipGroup::SetOrigSolid( CMapSolid *pSolid )
+{
+    m_pOrigSolid = pSolid;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline CMapSolid *CClipGroup::GetOrigSolid( void )
+{
+    return m_pOrigSolid;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CClipGroup::SetClipSolid( CMapSolid *pSolid, int side )
+{
+    m_pClipSolids[side] = pSolid;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline CMapSolid *CClipGroup::GetClipSolid( int side )
+{
+    return m_pClipSolids[side];
+}
+
+
+class Clipper3D : public Tool3D
+{
+    friend BOOL AddToClipList( CMapSolid *pSolid, Clipper3D *pClipper );
+
+public:
+
+    enum { FRONT = 0, BACK, BOTH };
+    
+    Clipper3D();
+	~Clipper3D();
+
+    void IterateClipMode( void );
+
+	inline void ToggleMeasurements( void );
+
+    //
+    // Tool3D implementation.
+    //
+	virtual int HitTest( CMapView *pView, const Vector2D &vPoint, bool bTestHandles = false );
+	virtual unsigned int GetConstraints(unsigned int nKeyFlags);
+
+    //
+    // CBaseTool implementation.
+    //
+	virtual void OnActivate();
+	virtual void OnDeactivate();
+	virtual ToolID_t GetToolID(void) { return TOOL_CLIPPER; }
+
+	virtual void RenderTool2D(CRender2D *pRender);
+	virtual void RenderTool3D(CRender3D *pRender);
+
+	virtual bool OnKeyDown2D(CMapView2D *pView, UINT nChar, UINT nRepCnt, UINT nFlags);
+	virtual bool OnKeyDown3D(CMapView3D *pView, UINT nChar, UINT nRepCnt, UINT nFlags);
+
+	virtual bool OnLMouseDown2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint);
+	virtual bool OnLMouseUp2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint);
+	virtual bool OnMouseMove2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint);
+
+	
+	
+protected:
+
+    //
+	// Tool3D implementation.
+	//
+	virtual bool UpdateTranslation( const Vector &vUpdate, UINT uFlags = 0 );
+	virtual void FinishTranslation( bool bSave );
+
+private:
+
+	void OnEscape(void);
+
+	void SetClipObjects( const CMapObjectList *pList );
+    void SetClipPlane( PLANE *pPlane );
+	void BuildClipPlane( void );
+
+    void SaveClipResults( void );
+    void GetClipResults( void );
+    void CalcClipResults( void );
+    void ResetClipResults( void );
+
+	void RemoveOrigSolid( CMapSolid *pOrigSolid );
+	void SaveClipSolid( CMapSolid *pSolid, CMapSolid *pOrigSolid );
+
+    void DrawBrushExtents(CRender2D *pRender, CMapSolid *pSolid, int nFlags);
+
+    int             m_Mode;                 // current clipping mode { back, front, both }
+    
+    PLANE           m_ClipPlane;            // the clipping plane -- front/back is uneccesary
+    Vector          m_ClipPoints[2];        // 2D clipping points -- used to create the clip plane
+    int             m_ClipPointHit;         // the clipping that was "hit" {0, 1, -1}
+	Vector			m_vOrgPos;
+
+    const CMapObjectList  *m_pOrigObjects;        // list of the initial objects to clip
+    CUtlVector<CClipGroup*> m_ClipResults;          // list of clipped objects
+
+	bool            m_bDrawMeasurements;	// Whether to draw brush dimensions in the 2D view.
+
+	CRender2D		m_Render2D;				// 2d renderer
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Toggles the clipper's rendering of brush measurements in the 2D view.
+//-----------------------------------------------------------------------------
+inline void Clipper3D::ToggleMeasurements( void )
+{
+	m_bDrawMeasurements = !m_bDrawMeasurements;
+	m_pDocument->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+}
+
+
+#endif // CLIPPER3D_H