@Override
public void setKnownSites(Collection<VectorXYZ> sites) {
AxisAlignedBoundingBoxXZ boundingBox = new AxisAlignedBoundingBoxXZ(sites);
boundingBox = boundingBox.pad(100);
triangulation = new DelaunayTriangulation(boundingBox);
for (VectorXYZ site : sites) {
triangulation.insert(site);