Set required vertex moved after remeshing

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#1

Hello,
before remeshing a volume mesh I set some vertices as requires, using the API function. I noticed that in the resulting mesh the required vertices have been moved by a very small amount, of the order of 1e-15/1e-14.

I stored the coordinates of the required vertices before remeshing,
P_b_i {x_before_i,y_before_i,z_before_i}, then i compare them with the values after remesing P_a_i {x_after_i,y_after_i,z_after_i }. They are not exactly the same: || P_a_i - P_b_i || != 0.0 but || P_a_i - P_b_i || ~ 1e-16/1e-15 (double), for several indices i.

Is it normal?

Grazie mille
Giovanni

#2

Dear Giovanni,

Thank you for your question. Would you be able to provide me with some minimal working example showcasing your problem ? This looks like a typical rounding error that can occur anytime a floating point is employed. With your example, I will be able to investigate whether this is something we have control upon or not.

Thank you very much in advance,
Corentin