Comments by Pramslam (Top 2 by date)

Thanks for the timely response!
pGrid is called within the main function before the main loop within winmain.cpp
<pre lang="midl">pGrid = new Grid(11, 11, &v0, &v1, &v2, &v3);

pGrid->CreateDirectXMesh(pd3dDevice);

D3DXCreateSphere(pd3dDevice, 2, 20, 20, &pBallMesh, NULL);

// Main message loop:</pre>

This is the grid constructor I am using.

<pre>
struct GRIDVERTEX
{
D3DXVECTOR3 p; // The untransformed, 3D position for the vertex
D3DXVECTOR3 n; // normalized normal
DWORD color; // color for this vertex
float u, v;
};
#define D3DFVF_GRIDVERTEX (D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_DIFFUSE | D3DFVF_TEX1)
class Grid {
private:
int maxWidthVertices; // width in vertices
int maxHeightVertices; // height in vertices
int widthVertices; // width in vertices
int heightVertices; // height in vertices
int widthFaces; // widht in faces
int heightFaces; // height in faces
unsigned long maxNumVertices;
unsigned long numVertices;
int numFaces;
D3DXVECTOR3 v0, v1, v2, v3; // in D3D face order
D3DXVECTOR3 dv; // delta v from 0 to 2
GRIDVERTEX *vertices;
WORD *indexData;
LPD3DXMESH mesh;
public:
Grid(
int maxWidthVerticesP,
int maxHeightVerticesP,
D3DXVECTOR3 *v0P,
D3DXVECTOR3 *v1P,
D3DXVECTOR3 *v2P,
D3DXVECTOR3 *v3P
);
</pre>

<pre lang="cs">Grid::Grid(
int maxWidthVerticesP,
int maxHeightVerticesP,
D3DXVECTOR3 *v0P,
D3DXVECTOR3 *v1P,
D3DXVECTOR3 *v2P,
D3DXVECTOR3 *v3P
) {
int i, j, k;

maxWidthVertices = maxWidthVerticesP;
maxHeightVertices = maxHeightVerticesP;
widthVertices = maxWidthVertices;
heightVertices = maxHeightVertices;

numVertices = widthVertices * heightVertices;
widthFaces = widthVertices - 1;
heightFaces = heightVertices - 1;
numFaces = widthFaces * heightFaces * 2; // 2 triangles in each grid cell
v0 = *v0P;
v1 = *v1P;
v2 = *v2P;
v3 = *v3P;
dv = v2 - v0;
dv.x /= float(widthVertices - 1);
dv.y /= 1;
dv.z /= float(heightVertices - 1);

// set up the vertex and normal and texture data
vertices = new GRIDVERTEX[numVertices];

for (j=0, k=0; j<heightVertices; j++) {
for (i=0; i<widthVertices; i++, k++) {
GetGridPoint(&(vertices[k].p), float(v0.x + i * dv.x), float(v0.z + j * dv.z));
GetGridNormal(&(vertices[k].n), &(vertices[k].p));
vertices[k].color = D3DCOLOR_ARGB(255,0,255,255);
vertices[k].u = vertices[k].p.x;
vertices[k].v = vertices[k].p.z;
}
}</pre>