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engine/dispnode.h

@@ -0,0 +1,195 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef DISPNODE_H
+#define DISPNODE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+//=========== (C) Copyright 2000 Valve, L.L.C. All rights reserved. ===========
+//
+// The copyright to the contents herein is the property of Valve, L.L.C.
+// The contents may be used and/or copied only with the written permission of
+// Valve, L.L.C., or in accordance with the terms and conditions stipulated in
+// the agreement/contract under which the contents have been supplied.
+//
+// $Revision: $
+// $NoKeywords: $
+//=============================================================================
+
+
+//=============================================================================
+//
+// Displacement Node Class
+//
+//  "Neighbor Nodes"     "Node Vert Indices"
+//         1                 6----1----7    
+//         |                 | \  |  / |
+//     0 --+-- 2             |   \|/   |    "Corner {SW, SE, NW, NE} : {4, 5, 6, 7}"
+//         |                 0 -Orig-- 2   
+//         3                 |   /|\   |    "Edge {W, N, E, S} : {0, 1, 2, 3}"
+//                           | /  |  \ |
+//                           4----3----5
+//
+
+class CDispNode
+{
+public:
+
+    enum{ W = 0, N, E, S, SW, SE, NW, NE };    
+
+    //=========================================================================
+    //
+    // Construction/Decontruction
+    //
+    CDispNode() {};
+    ~CDispNode() {};
+
+    //=========================================================================
+    //
+    // 
+    //
+    inline void SetBoundingBox( const Vector& bbMin, const Vector& bbMax );
+    inline void GetBoundingBox( Vector& bbMin, Vector& bbMax );
+    inline void SetErrorTerm( float error );
+    inline float GetErrorTerm( void );
+    inline void SetNeighborNodeIndex( int direction, int nodeIndex );
+    inline int GetNeighborNodeIndex( int direction );
+    inline void SetOrigVertexIndex( int vertIndex );
+    inline int GetOrigVertexIndex( void );
+    inline void SetVertexIndex( int direction, int vertIndex );
+    inline int GetVertexIndex( int direction );
+    inline void SetTouched( bool bTouched );
+    inline bool IsTouched( void );
+    inline void SetActivity( bool bActive );
+    inline bool IsActive( void );
+
+private:
+
+    Vector  m_BBox[2];                      // axial-aligned bounding box
+    float   m_ErrorTerm;                    // LOD error term
+    int     m_NeighborNodeIndices[4];       // neighbor node indices
+    int     m_OrigVertIndex;                // origin vertex index
+    int     m_VertIndices[8];               // neighboring vertex indices
+    bool    m_bTouched;                     // "touched" flag
+    bool    m_bActive;                      // "active" flag -- rendering
+};
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetBoundingBox( const Vector& bbMin, const Vector& bbMax )
+{
+	VectorCopy( bbMin, m_BBox[0] );
+	VectorCopy( bbMax, m_BBox[1] );
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::GetBoundingBox( Vector& bbMin, Vector& bbMax )
+{
+	VectorCopy( m_BBox[0], bbMin );
+	VectorCopy( m_BBox[1], bbMax );
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetErrorTerm( float error )
+{
+    m_ErrorTerm = error;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline float CDispNode::GetErrorTerm( void )
+{
+    return m_ErrorTerm;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetNeighborNodeIndex( int direction, int nodeIndex )
+{
+    m_NeighborNodeIndices[direction] = nodeIndex;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline int CDispNode::GetNeighborNodeIndex( int direction )
+{
+    return m_NeighborNodeIndices[direction];
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetOrigVertexIndex( int vertIndex )
+{
+    m_OrigVertIndex = vertIndex;
+}
+
+    
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline int CDispNode::GetOrigVertexIndex( void )
+{
+    return m_OrigVertIndex;
+}
+
+    
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetVertexIndex( int direction, int vertIndex )
+{
+    m_VertIndices[direction] = vertIndex;
+}
+
+    
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline int CDispNode::GetVertexIndex( int direction )
+{
+    return m_VertIndices[direction];
+}
+
+    
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetTouched( bool bTouched )
+{
+    m_bTouched = bTouched;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline bool CDispNode::IsTouched( void )
+{
+    return m_bTouched;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline void CDispNode::SetActivity( bool bActive )
+{
+    m_bActive = bActive;
+}
+
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline bool CDispNode::IsActive( void )
+{
+    return m_bActive;
+}
+#endif // DISPNODE_H