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