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[Johan Hake <johan.hake@xxxxxxxxx>]

Hello!

I have created a class, DistanceToBoundaryComputation, similar to 
IntersectionOperator, which takes a Mesh or a FacetFunction and compute 
distances between any point and the closest point to the Boundary or a subset 
of the boundary given by the FacetFunction.

I have published it together with two demos, cpp and python to illustrate some 
of its functions.

   lp:~johan-hake/dolfin/distance-to-boundary

If the distances from each vertex is computed, will the result be similar (not 
always equal) to the signed distance function, or the eikonal equation, but it 
computes faster.

I am not sure how this best can be integrated into the present dolfin. It 
generates some data, like a BoundaryMesh, which it need to store, so it might 
not be something we want to put into the Mesh class? If I use the same lazy 
initialization that Andre used it might be possible.

Please feel free to have alook at one of the demos to see it in action.

Johan