void PtexTriangleFilter::splitAndApply(PtexTriangleKernel& k, int faceid, const Ptex::FaceInfo& f)
{
// do we need to split? if so, split kernel and apply across edge(s)
if (k.u1 < 0 && f.adjface(2) >= 0) {
PtexTriangleKernel ka;
k.splitU(ka);
applyAcrossEdge(ka, f, 2);
}
if (k.v1 < 0 && f.adjface(0) >= 0) {
PtexTriangleKernel ka;
k.splitV(ka);
applyAcrossEdge(ka, f, 0);
}
if (k.w1 < 0 && f.adjface(1) >= 0) {
PtexTriangleKernel ka;
k.splitW(ka);
applyAcrossEdge(ka, f, 1);
}
// apply to local face
apply(k, faceid, f);
}
void PtexSeparableFilter::splitAndApply(PtexSeparableKernel& k, int faceid, const Ptex::FaceInfo& f)
{
// do we need to split? (i.e. does kernel span an edge?)
bool splitR = (k.u+k.uw > k.res.u()), splitL = (k.u < 0);
bool splitT = (k.v+k.vw > k.res.v()), splitB = (k.v < 0);
#ifdef NOEDGEBLEND
// for debugging only
if (splitR) k.mergeR(_uMode);
if (splitL) k.mergeL(_uMode);
if (splitT) k.mergeT(_vMode);
if (splitB) k.mergeB(_vMode);
#else
if (splitR || splitL || splitT || splitB) {
PtexSeparableKernel ka, kc;
if (splitR) {
if (f.adjface(e_right) >= 0) {
k.splitR(ka);
if (splitT) {
if (f.adjface(e_top) >= 0) {
ka.splitT(kc);
applyToCorner(kc, faceid, f, e_top);
}
else ka.mergeT(_vMode);
}
if (splitB) {
if (f.adjface(e_bottom) >= 0) {
ka.splitB(kc);
applyToCorner(kc, faceid, f, e_right);
}
else ka.mergeB(_vMode);
}
applyAcrossEdge(ka, faceid, f, e_right);
}
else k.mergeR(_uMode);
}
if (splitL) {
if (f.adjface(e_left) >= 0) {
k.splitL(ka);
if (splitT) {
if (f.adjface(e_top) >= 0) {
ka.splitT(kc);
applyToCorner(kc, faceid, f, e_left);
}
else ka.mergeT(_vMode);
}
if (splitB) {
if (f.adjface(e_bottom) >= 0) {
ka.splitB(kc);
applyToCorner(kc, faceid, f, e_bottom);
}
else ka.mergeB(_vMode);
}
applyAcrossEdge(ka, faceid, f, e_left);
}
else k.mergeL(_uMode);
}
if (splitT) {
if (f.adjface(e_top) >= 0) {
k.splitT(ka);
applyAcrossEdge(ka, faceid, f, e_top);
}
else k.mergeT(_vMode);
}
if (splitB) {
if (f.adjface(e_bottom) >= 0) {
k.splitB(ka);
applyAcrossEdge(ka, faceid, f, e_bottom);
}
else k.mergeB(_vMode);
}
}
#endif
// do local face
apply(k, faceid, f);
}