78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Heightfield class
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//
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// $Revision: $
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// $NoKeywords: $
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//===========================================================================//
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#ifndef HEIGHTFIELD_H
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#define HEIGHTFIELD_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "materialsystem/MaterialSystemUtil.h"
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class CMeshBuilder;
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//-----------------------------------------------------------------------------
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// Definition of a heightfield
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//-----------------------------------------------------------------------------
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class CHeightField
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{
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public:
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CHeightField( int nPowX, int nPowY, int nPowScale );
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~CHeightField();
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// Loads the heights from a file
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bool LoadHeightFromFile( const char *pFileName );
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// Returns the max range of x, y
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int GetWidth();
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int GetHeight();
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// Returns the height of the field at a paticular (x,y)
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float GetHeight( float x, float y );
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float GetHeightAndSlope( float x, float y, float *dx, float *dy );
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// Draws the heightfield
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void Draw( );
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private:
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int m_nPowX;
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int m_nPowY;
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int m_nWidth;
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int m_nHeight;
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int m_nScale;
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int m_nPowScale;
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float m_flOOScale;
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float *m_pHeightField;
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CMaterialReference m_Material;
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CTextureReference m_Texture;
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};
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//-----------------------------------------------------------------------------
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// Returns the max range of x, y (for use in GetHeight)
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//-----------------------------------------------------------------------------
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inline int CHeightField::GetWidth()
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{
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return m_nWidth << m_nPowScale;
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}
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inline int CHeightField::GetHeight()
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{
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return m_nHeight << m_nPowScale;
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}
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#endif // HEIGHTFIELD_H
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