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utils/vrad/vrad_dispcoll.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef VRAD_DISPCOLL_H
+#define VRAD_DISPCOLL_H
+#pragma once
+
+#include <assert.h>
+#include "DispColl_Common.h"
+
+//=============================================================================
+//
+// VRAD specific collision
+//
+#define VRAD_QUAD_SIZE			4
+
+struct CPatch;
+
+class CVRADDispColl : public CDispCollTree
+{
+public:
+
+	// Creation/Destruction Functions
+	CVRADDispColl();
+	~CVRADDispColl();
+	bool Create( CCoreDispInfo *pDisp );
+
+	// Patches.
+	bool InitPatch( int iPatch, int iParentPatch, int iChild, Vector *pPoints, int *pIndices, float &flArea );
+	bool InitParentPatch( int iPatch, Vector *pPoints, float &flArea );
+	float CreateParentPatches( void );
+	void CreateChildPatches( int iParentPatch, int nLevel );
+	void CreateChildPatchesFromRoot( int iParentPatch, int *pChildPatch );
+	void CreateChildPatchesSub( int iParentPatch );
+
+	// Operations Functions
+	void BaseFacePlaneToDispUV( Vector const &vecPlanePt, Vector2D &dispUV );
+	void DispUVToSurfPoint( Vector2D const &dispUV, Vector &vecPoint, float flPushEps );
+	void DispUVToSurfNormal( Vector2D const &dispUV, Vector &vecNormal );
+
+	// Data.
+	inline float GetSampleRadius2( void )								{ return m_flSampleRadius2; }
+	inline float GetPatchSampleRadius2( void )							{ return m_flPatchSampleRadius2; }
+
+	inline int GetParentIndex( void )									{ return m_iParent; }		
+	inline void GetParentFaceNormal( Vector &vecNormal )				{ vecNormal = m_vecStabDir; }
+
+	inline void GetVert( int iVert, Vector &vecVert )					{ Assert( ( iVert >= 0 ) && ( iVert < GetSize() ) ); vecVert = m_aVerts[iVert]; }
+	inline void GetVertNormal( int iVert, Vector &vecNormal )			{ Assert( ( iVert >= 0 ) && ( iVert < GetSize() ) ); vecNormal = m_aVertNormals[iVert]; }
+	inline Vector2D const& GetLuxelCoord( int iLuxel )					{ Assert( ( iLuxel >= 0 ) && ( iLuxel < GetSize() ) ); return m_aLuxelCoords[iLuxel]; }
+
+	// Raytracing
+	void AddPolysForRayTrace( void );
+
+protected:
+
+	void CalcSampleRadius2AndBox( dface_t *pFace );
+
+	// Utility.
+	void DispUVToSurf_TriTLToBR( Vector &vecPoint, float flPushEps, float flU, float flV, int nSnapU, int nSnapV, int nWidth, int nHeight );
+	void DispUVToSurf_TriBLToTR( Vector &vecPoint, float flPushEps, float flU, float flV, int nSnapU, int nSnapV, int nWidth, int nHeight );
+	void GetSurfaceMinMax( Vector &boxMin, Vector &boxMax );
+	void GetMinorAxes( Vector const &vecNormal, int &nAxis0, int &nAxis1 );
+
+protected:
+
+	int						m_iParent;								// Parent index
+	float					m_flSampleRadius2;						// Sampling radius
+	float					m_flPatchSampleRadius2;					// Patch sampling radius (max bound)
+	float					m_flSampleWidth;
+	float					m_flSampleHeight;
+	CUtlVector<Vector2D>	m_aLuxelCoords;							// Lightmap coordinates.
+	CUtlVector<Vector>		m_aVertNormals;							// Displacement vertex normals
+};
+
+#endif // VRAD_DISPCOLL_H