www.pudn.com > terrainSimple.rar > terrain.h

////////////////////////////////////////////////////////////////////////////////////////////////// 
//  
// File: terrain.h 
//  
// Author: Frank Luna (C) All Rights Reserved 
// 
// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0  
// 
// Desc: Represents a 3D terrain.        
// 
////////////////////////////////////////////////////////////////////////////////////////////////// 
 
#ifndef __terrainH__ 
#define __terrainH__ 
 
#include "SSZd3d.h" 
#include  
#include  
 
class Terrain 
{ 
public: 
	Terrain( 
		IDirect3DDevice9* device, 
		std::string heightmapFileName,  
		int numVertsPerRow,   
		int numVertsPerCol,  
		int cellSpacing,    // space between cells 
		float heightScale);    
 
	~Terrain(); 
 
	int  getHeightmapEntry(int row, int col); 
	void setHeightmapEntry(int row, int col, int value); 
 
	float getHeight(float x, float z); 
 
	bool  loadTexture(std::string fileName); 
	bool  genTexture(D3DXVECTOR3* directionToLight); 
	bool  draw(D3DXMATRIX* world, bool drawTris); 
 
private: 
	IDirect3DDevice9*       _device; 
	IDirect3DTexture9*      _tex; 
	IDirect3DVertexBuffer9* _vb; 
	IDirect3DIndexBuffer9*  _ib; 
 
	int _numVertsPerRow; 
	int _numVertsPerCol; 
	int _cellSpacing; 
 
	int _numCellsPerRow; 
	int _numCellsPerCol; 
	int _width; 
	int _depth; 
	int _numVertices; 
	int _numTriangles; 
 
	float _heightScale; 
 
	std::vector _heightmap; 
 
	// helper methods 
	bool  readRawFile(std::string fileName); 
	bool  computeVertices(); 
	bool  computeIndices(); 
	bool  lightTerrain(D3DXVECTOR3* directionToLight); 
	float computeShade(int cellRow, int cellCol, D3DXVECTOR3* directionToLight); 
 
	struct TerrainVertex 
	{ 
		TerrainVertex(){} 
		TerrainVertex(float x, float y, float z, float u, float v) 
		{ 
			_x = x; _y = y; _z = z; _u = u; _v = v; 
		} 
		float _x, _y, _z; 
		float _u, _v; 
 
		static const DWORD FVF; 
	}; 
}; 
 
#endif // __terrainH__