public static void Mask(TransitionsList src, TransitionsList dst, MatrixWorld mask, Noise random, bool invert)
/// Adds masked (or unmasked if invert) objects to dst
{
for (int t = 0; t < src.count; t++)
{
Vector3 pos = src.arr[t].pos;
if (pos.x <= mask.worldPos.x && pos.x >= mask.worldPos.x + mask.worldSize.x &&
pos.z <= mask.worldPos.z && pos.z >= mask.worldPos.x + mask.worldSize.z)
{
continue; //do remove out of range objects?
}
float val = mask.GetWorldValue(pos.x, pos.z);
float rnd = random.Random(src.arr[t].hash);
if (val < rnd && invert)
{
dst.Add(src.arr[t]);
}
if (val >= rnd && !invert)
{
dst.Add(src.arr[t]);
}
}
}
public TransitionsList ToTransitionsList()
{
TransitionsList list = new TransitionsList(); //capacity rect.size.x * rect.size.z
Coord min = rect.Min; Coord max = rect.Max;
for (int x = min.x; x < max.x; x++)
{
for (int z = min.z; z < max.z; z++)
{
Vector3 pos = this[x, z];
//if (pos.y < minHeight) continue;
Transition trs = new Transition(pos.x, pos.z);
trs.hash = x * 2000 + z; //to make hash independent from grid size
list.Add(trs);
}
}
return(list);
}