On 11/25/2016 06:46 PM, Jerome Duriez wrote:
Hi,
In pkg/pfg/FlowEngine.ipp.in, why do volumeCell() return directly a
"volume" value [1], whereas other volumeCell*Fictious() functions
return the std::abs() of "volume" [2] ?
Volume [1] is a signed volume and theoreticaly - at least - the sign can
change over time (if one vertex go across a facet). For volume[2] the
author (Ema or me I don't remember) apparently speculated that those
ones would not change sign in a normal situation, which is maybe true
but it doesn't have to be assumed, it could be a signed volume as well
with a mechanism to keep the sign in memory (what [1] does).
Bruno
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