if (leaves.size() > bu_treshold) {
DbvtAabbMm vol = bounds(leaves);
Vector3f org = vol.Center(Stack.alloc(Vector3f.class));
ObjectArrayList[] sets = new ObjectArrayList[2];
for (int i=0; i<sets.length; i++) {
sets[i] = new ObjectArrayList();
}
int bestaxis = -1;
int bestmidp = leaves.size();
int[][] splitcount = new int[/*3*/][/*2*/]{{0, 0}, {0, 0}, {0, 0}};