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Forum: Geometry
Re: Question Precision of GetMass() (Ioannis Sechopoulos)
Re: None Re: Precision of GetMass() (Vladimir Grichine)
Date: 27 Aug, 2014
From: Kareem Kazkaz <Kareem Kazkaz>

I just ran into this issue about accuracy of the GetMass() calculation.

Sampling over 1e6 points does NOT provide 0.001-level accuracy. You get approximately that accuracy only if 1e6 of your sampled points fall inside the volume you're calculating the mass of. If your volume is hollow (say, a vacuum vessel with a large interior), sampling over just 1e6 points can easily get you accuracy worse than 10%. I just learned this the hard way.

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