//terrainmap.h

#include <d3dx9.h>

//forward declaration
class HeightMap;

struct Vertex
{
	D3DXVECTOR3 pos,n;
};

struct Triangle
{
	Vertex* p0,p1,p2;
	D3DXVECTOR3 n;
};

struct Cell
{
	Triangle t0,t1;
};


class TerrainMap
{
public:
	
	TerrainMap(unsigned int numVerticesWide, unsigned int numVerticesTall);
...
}


//terrainmap.cpp


#include "TerrainMap.h"
#include "HeightMap.h"

TerrainMap::TerrainMap(unsigned int numVerticesWide, unsigned int numVerticesTall)
{
	m_numVerticesWide = numVerticesWide;
	m_numVerticesTall = numVerticesTall;

	m_vertices = new (Vertex*)[m_numVerticesTall];

...
}