Merge branch 'trisurf-polyel'. It is the most debugged version. True, witho...

Samo Penic

2014-03-06 6705af6d3d02e47a797c53146666a1d168e1aefc

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Original written by Dan Kroll in FORTRAN. Code was then largely adapted and commented by Miha Fosnaric-Fosni. Rewritten into C by Samo Penic-Peni, with help of Miha's extensive explanations.