started with trisurf scripts

Samo Penic

2014-09-11 39ff57c7adf4fb04fffa2f3093aaa5fafdddaa74

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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.