/*
* Weld points, assign new indexes and calculate new TB
* return current number of points (last index +1)
*/
static int weldWithTB(MeshVertex v, int index) {
Vec3f[] nSum = MeshTempState.getInstance().triNormals;
for (; v != null; v = v.next) {
if (v.index < 0) {
int nuLocal = 0;
for (int i = 0; i < 3; i++) {
nSum[i].set(v.norm[i]);
}
for (MeshVertex i = v.next; i != null; i = i.next) {
if (i.index < 0) {
if (okToWeldVertsTB(v, i)) {
i.index = IDX_UNITE;
nuLocal++;
for (int j = 0; j < 3; ++j) {
nSum[j].add(i.norm[j]);
}
}
}
}
if (nuLocal != 0) {
if (MeshUtil.isTangentOK(nSum)) {
MeshUtil.fixTSpace(nSum);
v.index = index;
for (int i = 0; i < 3; ++i) {
v.norm[i].set(nSum[i]);
}
for (MeshVertex i = v.next; i != null; i = i.next) {
if (i.index == IDX_UNITE) {
i.index = index;
i.norm[0].set(0, 0, 0);
}
}
} else {
// roll all back, unite failed
nuLocal = 0;
}
}
if (nuLocal == 0) {
// nothing to join, fix in-place
MeshUtil.fixTSpace(v.norm);
v.index = index;
}
index++;
}
}
return index;
}
static void avgSmNormals(MeshVertex v) {
Vec3f normalSum = MeshTempState.getInstance().vec3f1;
for (; v != null; v = v.next) {
if (v.index == IDX_UNDEFINED) {
normalSum.set(v.norm[0]);
int sm = v.smGroup;
for (MeshVertex i = v.next; i != null; i = i.next) {
if (i.smGroup == sm) {
assert (i.index == IDX_UNDEFINED);
i.index = IDX_SET_SMOOTH;
normalSum.add(i.norm[0]);
}
}
if (MeshUtil.isNormalOkAfterWeld(normalSum)) {
normalSum.normalize();
for (MeshVertex i = v; i != null; i = i.next) {
if (i.smGroup == sm) {
i.norm[0].set(normalSum);
}
}
}
}
}
}