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[Mateus Bellomo <>]

Hello all,

I have a quadrilateral grid as an Arrangement_2. I'm making some operations in it as moving some vertices with degree 4. To make this operations I'm removing the four edges incident to a vertex v, change the v position and putting back the edges in v with its neighbours. After this operations I want to iterate over the arrangement faces in a certain order, as I defined in the beginning extending DCEL faces and attributing an index. I noticed that my face indices are becoming 0 after the moving operations and I think it's right since I'm merging 4 faces into 1 and then splitting this face in another 4.

I'm wondering if there is a way to move a vertex with degree 4 without changing the four faces adjacent to it.

Thanks

Mateus