/*
* Check for normals in one smoothing group and remove points from the group
* if they are opposite looking in order to prevent a normal to be zero in
* one SM group. Opposite looking normals are normals which angle is more
* than 110 degrees.
*/
static void correctSmNormals(MeshVertex n) {
// remove opposite looking normals from one smoothing group
for (MeshVertex l = n; l != null; l = l.next) {
if (l.smGroup != 0) {
for (MeshVertex i = l.next; i != null; i = i.next) {
if (((i.smGroup & l.smGroup) != 0) && MeshUtil.isOppositeLookingNormals(i.norm, l.norm)) {
l.smGroup = 0;
i.smGroup = 0;
break;
}
}
}
}
}
static void mergeSmIndexes(MeshVertex n) {
for (MeshVertex l = n; l != null; ) {
boolean change = false;
for (MeshVertex i = l.next; i != null; i = i.next) {
if (((l.smGroup & i.smGroup) != 0) && (l.smGroup != i.smGroup)) {
l.smGroup = i.smGroup | l.smGroup;
i.smGroup = l.smGroup;
change = true;
}
}
if (!change) {
l = l.next;
}
}
}