private void makeCursorLODVB(ref VertexBuffer vb, ref uint numVerts, BTerrainVisual.eLODLevel lod)
{
VertexTypes.Pos[] verts = null;
uint width = BTerrainQuadNode.getMaxNodeWidth();
uint vd = width * 2;
uint tw = width;
uint td = width;
int counter = 0;
switch (lod)
{
case BTerrainVisual.eLODLevel.cLOD0:
{
numVerts = (width + 1) * (width + 1);
verts = new VertexTypes.Pos[numVerts];
vd = width * 2;
tw = width;
td = width;
for (int z = 0; z < td; z++)
{
for (int x = 0; x < tw; x++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
}
}
}
break;
case BTerrainVisual.eLODLevel.cLOD1:
{
numVerts = (1 + (width >> 1)) * (1 + (width >> 1));
verts = new VertexTypes.Pos[numVerts];
tw = width >> 1;
td = width >> 1;
vd = 2 * (width >> 1);
for (int x = 0; x < tw; x++)
{
for (int z = 0; z < td; z++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
}
}
}
break;
case BTerrainVisual.eLODLevel.cLOD2:
{
numVerts = (1 + (width >> 2)) * (1 + (width >> 2));
verts = new VertexTypes.Pos[numVerts];
tw = width >> 2;
td = width >> 2;
vd = 2 * (width >> 2);
for (int x = 0; x < tw; x++)
{
for (int z = 0; z < td; z++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
}
}
}
break;
case BTerrainVisual.eLODLevel.cLOD3:
{
numVerts = (1 + (width >> 3)) * (1 + (width >> 3));
verts = new VertexTypes.Pos[numVerts];
tw = width >> 3;
td = width >> 3;
vd = 2 * (width >> 3);
for (int x = 0; x < tw; x++)
{
for (int z = 0; z < td; z++)
{
int k = z + (int)(x * vd);
verts[counter++].x = (k);
}
}
}
break;
default:
return;
}
vb = new VertexBuffer(typeof(VertexTypes.Pos), (int)numVerts, BRenderDevice.getDevice(), Usage.None, VertexFormats.Position, Pool.Managed);
GraphicsStream stream = vb.Lock(0, (int)numVerts * sizeof(float) * 3, LockFlags.None);
stream.Write(verts);
vb.Unlock();
verts = null;
}
public void getCursorLODVB(ref VertexBuffer vb, ref uint numVerts, BTerrainVisual.eLODLevel lod)
{
vb = mCursorVertexBuffers[(int)lod];
numVerts = mNumCursorVerts[(int)lod];
}
