void InsertIntoChunkMaybe(StabilityChunk[,] ary, int x, int y, IceStabilityTriangle tri, Rectangle box)
{
if (x >= 0 && y >= 0 && x < ary.GetLength(0) && y < ary.GetLength(1))
{
var chunk = ary[x, y];
if (box.IntersectsWith(chunk.BoundingBox))
{
chunk.Triangles.Add(tri);
}
}
}
void InsertIntoChunks(StabilityChunk[,] ary, int x, int y, IceStabilityTriangle tri, Rectangle box)
{
InsertIntoChunkMaybe(ary, x, y, tri, box);
InsertIntoChunkMaybe(ary, x - 1, y, tri, box);
InsertIntoChunkMaybe(ary, x + 1, y, tri, box);
InsertIntoChunkMaybe(ary, x, y - 1, tri, box);
InsertIntoChunkMaybe(ary, x - 1, y - 1, tri, box);
InsertIntoChunkMaybe(ary, x + 1, y - 1, tri, box);
InsertIntoChunkMaybe(ary, x, y + 1, tri, box);
InsertIntoChunkMaybe(ary, x - 1, y + 1, tri, box);
InsertIntoChunkMaybe(ary, x + 1, y + 1, tri, box);
}
