public uint DrawToTexture(Map map, CustomVertex.TransformedTextured[] pV, float cogX, float cogY)
{
const float CellSize = 16.0f;
const uint uChars = 16;
const uint vChars = 2;
const float uScale = 1.0f / uChars;
const float vScale = 1.0f / vChars;
uint startX = 0;
uint endX = 0;
uint startY = 0;
uint endY = 0;
map.GetActive(ref cogX, ref cogY, ref startX, ref startY, ref endX, ref endY);
float xBase = -cogX * 16.0f - 0.5f;
float yBase = -cogY * 16.0f - 0.5f;
uint dwNumTris = 0;
uint index = 0;
for(uint x = startX; x < endX; x++)
{
for(uint y = startY; y < endY; y ++)
{
byte b = (byte) map.Get(x, y);
float uLow = (b % uChars) * uScale;
float uHigh = uLow + uScale;
float vLow = (b / uChars) * vScale;
float vHigh = vLow + vScale;
float xLow = xBase + x * CellSize;
float xHigh = xLow + CellSize;
float yLow = yBase + y * CellSize;
float yHigh = yLow + CellSize;
// Set the two triangles
// First triangle
pV[index].X = xLow;
pV[index].Y = yLow;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uLow;
pV[index].Tv = vLow;
index++;
pV[index].X = xHigh;
pV[index].Y = yLow;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uHigh;
pV[index].Tv = vLow;
index++;
pV[index].X = xLow;
pV[index].Y = yHigh;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uLow;
pV[index].Tv = vHigh;
// Second triangle
index++;
pV[index].X = xLow;
pV[index].Y = yHigh;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uLow;
pV[index].Tv = vHigh;
index++;
pV[index].X = xHigh;
pV[index].Y = yLow;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uHigh;
pV[index].Tv = vLow;
index++;
pV[index].X = xHigh;
pV[index].Y = yHigh;
pV[index].Z = 0.0f;
pV[index].Rhw = 1.0f;
pV[index].Tu = uHigh;
pV[index].Tv = vHigh;
index++;
dwNumTris += 2;
}
}
return dwNumTris;
}
