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Fix bilinear stencil tangent computions

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- fix a couple of sneaky typos in the FarstencilTablesFactory

fixes #319
This commit is contained in:
manuelk 2014-06-19 11:34:08 -07:00
parent 3bd2c0aef6
commit 2a181b166a
1 changed files with 5 additions and 3 deletions
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8
opensubdiv/far/stencilTablesFactory.h
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@ -1734,6 +1734,7 @@ FarStencilTablesFactory<T>::Patch::_GetTangentLimitStencils( HbrHalfedge<T> * e,
FarVertexStencil::Subtract(uderiv, v1->GetData().GetStencil(), v2->GetData().GetStencil());
FarVertexStencil::Scale(uderiv, 0.5f, GetStencilSize());
FarVertexStencil::Reset(vderiv, 0.0f, GetStencilSize());
FarVertexStencil::AddScaled(vderiv, v->GetData().GetStencil(), creaseK[n][0]);
FarVertexStencil::AddScaled(vderiv, v1->GetData().GetStencil(), creaseK[n][1]);
FarVertexStencil::AddScaled(vderiv, v2->GetData().GetStencil(), creaseK[n][2]);
@ -1741,10 +1742,11 @@ FarStencilTablesFactory<T>::Patch::_GetTangentLimitStencils( HbrHalfedge<T> * e,
// Math on vertices between the two creases
float d = fabsf(creaseK[n][0]) + fabsf(creaseK[n][1]) + fabsf(creaseK[n][2]);
idx = 3;
if ((vi=++vi)==vertices.end()) {
vi = v1i;
if ((++vi)==vertices.end()) {
vi = vertices.begin();
}
while (vi !=v2i) {
while (vi!=v2i) {
FarVertexStencil::AddScaled(vderiv, (*vi)->GetData().GetStencil(), creaseK[n][idx]);
d += fabsf(creaseK[n][idx]);
++idx;
@ -1753,7 +1755,7 @@ FarStencilTablesFactory<T>::Patch::_GetTangentLimitStencils( HbrHalfedge<T> * e,
}
}
FarVertexStencil::Scale(uderiv, -2.0f/d, GetStencilSize());
FarVertexStencil::Scale(vderiv, -2.0f/d, GetStencilSize());
} break;