[vtkusers] Get normal vector of the closest polydata cell to a given test point

David Doria daviddoria at gmail.com
Wed Jan 11 12:25:38 EST 2017

> Hello,
> i have a test point p[x,y,z] and a polydata.
> I use vtkCellLocator to get the closest cell of the polydata to this
> point.
> I get:
> - the closest point
> - the squared distance to the closest point
> - cell ID
> Now I want to get the normal vector of the cell. I know the cell ID but I
> don't know how to get the
> normal vector from it.
> Thank you!

This example shows how to retrieve cell normals:


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