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Added function to compute the barycenter of the thin shell surface model. E.g. the barycenter of the mesh as if all the mass was concentrated over the surface of the mesh. Useful for computing barycenter of planar figures.

This commit is contained in:
Paolo Cignoni 2010-09-30 23:30:22 +00:00
parent f299a80c7b
commit 92bbd33394
1 changed files with 22 additions and 0 deletions
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22
vcg/complex/trimesh/stat.h
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@ -94,6 +94,28 @@ class Stat
}
return minmax;
}
/**
\short compute the barycenter of the surface thin-shell.
E.g. it assume a 'empty' model where all the mass is located on the surface and compute the barycenter of that thinshell.
Works for any triangulated model (no problem with open, nonmanifold selfintersecting models).
Useful for computing the barycenter of 2D planar figures.
*/
static Point3<ScalarType> ComputeShellBarycenter(MeshType & m)
{
Point3<ScalarType> barycenter(0,0,0);
ScalarType areaSum=0;
FaceIterator fi;
for(fi = m.face.begin(); fi != m.face.end(); ++fi)
if(!(*fi).IsD())
{
ScalarType area=DoubleArea(*fi);
barycenter += Barycenter(*fi)*area;
areaSum+=area;
}
return barycenter/areaSum;
}
static ScalarType ComputeMeshArea(MeshType & m)
{