[xoreos-devel] KotOR animations

[Bardot Jérôme]

Can you send more code ? (a paste)

what is your b ?



Le 27/08/2017 à 10:26, Vsevolod Kremianskii a écrit :
> Alright, it works. Sort off. Except for that ugly mesh deformation
> issue. I wonder if somebody could set me in the right direction from
> here.
>
> Here's how it's done:
>
> I load position and orientation controllers for every animation node,
> which pretty much does it for the skeleton (also heads, since they're
> attached to the headhook).
> I load bone mapping from skin mesh header and per vertex bone data
> from MDX (as described here
> <https://github.com/xoreos/xoreos-docs/blob/master/specs/kotor_mdl.html>).
> When animation gets updated I iterate through model's skinned nodes
> and for every vertex do the following:
>
> I iterate over nodes (bones) that affect the vertex and create each
> node's global transformation matrix (relative to the root node). Then
> I multiply initial vertex coordinates by the transformation matrix and
> multiply that by the bone weight. Resulting vertex coordinates are
> calculated as a sum of four transformed vertices. There are some
> optimizations in place so it isn't quite as bad as it sounds.
>
>  for (uint32 i = 0; i < vertexCount; ++i) {
>  v[0] = 0;
>  v[1] = 0;
>  v[2] = 0;
>  for (uint8 j = 0; j < 4; ++j) {
>  int index = static_cast<int>(b[4 + j]);
>  if (index != -1) {
>  float rv[3];
>  transform = transArr + (index * 16);
>  transform.multiply(iv, rv);
>  v[0] += rv[0] * b[j];
>  v[1] += rv[1] * b[j];
>  v[2] += rv[2] * b[j];
>  }
>  }
>  v += stride;
>  iv += 3;
>  b += 8;
>  }
>
> Now, the problem is that weird stretching issue. I have no idea what
> could cause that at the moment.
>
> <goog_555208919>
> https://yadi.sk/i/0hnd2a0M3MMYJR
> https://yadi.sk/i/jdiTSrXZ3MMYL3
> https://yadi.sk/i/Vm3kRTVf3MMYKQ
>
>
>
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