/**
* computes opposite halfEdge for the given half edge.
*
* @param halfEdge the halfEdge to compute the opposite for.
* @return the opposite HalfEdge to the given one.
*/
private HalfEdge computeOppositeHalfEdge(HalfEdge halfEdge) {
Vertex destination = halfEdge.getNext().getStartVertex();
for (HalfEdge opposite : halfEdges) {
if (!halfEdge.equals(opposite) && opposite.getStartVertex().equals(destination)) {
if (opposite.getNext().getStartVertex().equals(halfEdge.getStartVertex())) {
return opposite;
}
}
}
return null;
}
public void computeVertexNormals() {
for (HalfEdge first : halfEdges) {
HalfEdge cur = first;
Vector3 sum = cur.getFacet().getNormal();
do {
cur = cur.getOpposite().getNext();
sum.add(cur.getFacet().getNormal());
} while (cur != first);
first.getStartVertex().setNormal(sum.getNormalized());
}
}