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[Mateus Bellomo <>]

Hello,

I'm using Arrangement_2 and trying to modify a vertex point but I think the structure it's not updating information correctly.

I have a quadrilateral grid and I want to move some vertices in this grid to make a distortion. After I move the vertex I have to check if some of it's edges have crossed another edge. For that I have checked the circular order of edges of it's neighbours. But even when I made a movement that created crossing edges this circular order is not changing as it would.

Do you know if after using modify_vertex() function the hole Arrangement_2 structure is updated (including circular order of edges in all vertices) accordingly?

Thanks.