Hi Eduardo, Thanks for your reply.
>So you can preprocess the parts of the body, and with a uv or world
position relation,
I have already defined this data structure
class VertexIndexMap// Map driver vertex index to driven vertex index
{
std::vector<int> m_vi;//
}
class Part
{
VertexIndexMap m_vim;// vertex index mapping
}
And I built the map. (Assuming that the driven mesh has 7 vertex, and the
driven mesh is seperated to two parts, part0 and part1.)
Part part0;// drive the driven mesh's vtx[0:2]
...
part0.m_vim.m_vi[0] = 1;// It means part0(the driver mesh)'s vtx[0] is
mapped to driven mesh's vtx[1]. So driven mesh's vtx[1] is deformed
according to part0's vtx[0]
part0.m_vim.m_vi[1] = 2;
part0.m_vim.m_vi[2] = 0;
Part part1;// drive the driven mesh's vtx[3:6]
part1.m_vim.m_vi[0] = 3;
part1.m_vim.m_vi[1] = 4;// It means part1(the driver mesh)'s vtx[1] is
mapped to driven mesh's vtx[4]. So driven mesh's vtx[4] is deformed
according to part1's vtx[1]
part1.m_vim.m_vi[3] = 5;
part1.m_vim.m_vi[4] = 6;
> and then you can rebuild the blendshape on a full mesh.
How to rebuild the blendshape on a full mesh?
Do you mean you can re-use the UI of Maya Paint BlendShape Weights Tool?
> When adding it to the blendshape node as target, paint the weights only
to the affected vertices only
How to add it to the blendshape node as target? Because I defined my deform
node by inheriting MPxDeformerNode, my deform node is not a blendshape node
at all.
This is my deform node:
class MyDeform : public MPxDeformerNode
{
...
static MObject aDrivers;// it is an array, compound attribute, and it has
child attribute aMesh, aVtxIdx
static MObject aMesh; // it is a mesh type attribute, and is linked from
the driver mesh
static MObject aVtxIdx; // it is an array attribute, and contains the
vertex index mapping
...
}
Cheers
yao
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