www.pudn.com > roam.rar > Landscape.h

// Landscape.h: interface for the Landscape class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#ifndef LANDSCAPE_H 
#define LANDSCAPE_H 
 
#include "Patch.h" 
 
// 定义地形图及其对应子块图大小: 
#define MAP_1024 
 
#ifdef MAP_2048 
// ------- 2048x2048 MAP ------- 
#define MAP_SIZE (2048) 
#define NUM_PATCHES_PER_SIDE (32) 
 
#else 
#ifdef MAP_1024 
// ------- 1024x1024 MAP ------- 
#define MAP_SIZE (1024) 
#define NUM_PATCHES_PER_SIDE (16) 
 
#else 
// ------- 512x512 MAP ------- 
#define MAP_SIZE (512) 
#define NUM_PATCHES_PER_SIDE (8) 
 
#endif 
#endif 
 
 
// How many TriTreeNodes should be allocated? 
#define POOL_SIZE (85000) 
 
// 每块子网格中含有的网格数 
#define PATCH_SIZE (MAP_SIZE/NUM_PATCHES_PER_SIDE) 
 
#define SQR(x) ((x) * (x)) 
#define MAX(a,b) ((a < b) ? (b) : (a)) 
#define DEG2RAD(a) (((a) * M_PI) / 180.0f) 
#define M_PI (3.14159265358979323846f) 
 
 
class Landscape   
{ 
public: 
	virtual void Tessellate(); 
	virtual void Render(); 
	static TriTreeNode * AllocateTri(); 
 
	virtual void Reset(int viewPosX,int viewPosY); 
	virtual void Init(double *hMap); 
 
	Landscape(); 
	virtual ~Landscape(); 
 
	static int GetNextTriNode() { return m_NextTriNode; } 
	static void SetNextTriNode( int nNextNode ) { m_NextTriNode = nNextNode; } 
 
protected: 
	Patch m_Patches[NUM_PATCHES_PER_SIDE][NUM_PATCHES_PER_SIDE];	// 地形子块数组 
	static int	m_NextTriNode;										// Index to next free TriTreeNode 
	static TriTreeNode m_TriPool[POOL_SIZE];						// Pool of TriTree nodes for splitting 
 
}; 
 
#endif