# face area

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 August 10, 2002, 16:57 face area #1 John Guest   Posts: n/a Perhaps I'm blind but I can't find how to get the area of a face in the UDF manual. I see F_AREA(A,f,t) but this gives the face normal. I hope I don't have to calculate it using: Area = F_FLUX/F_R/(F_U^2+F_V^2+F_W^2)^0.5! Have I missed the obvious?

 August 13, 2002, 04:12 Re: face area #2 Anthony Wachs Guest   Posts: n/a Hi John, The face area corresponds to the magnitude of the face normal vector. Therefore, you have : face normal vector = F_AREA(A,f,t) face area = magnitude of face normal vector = NV_MAG(A) and it yields in your code source : /* Face area */ F_AREA(A,f,t); At=NV_MAG(A); where At stands for the face area Hope it could help, Anthony

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