bool_isInitialized;// indicates if the polygon and refpoint etc. are initialized, prevents reinitialisation from gui and execution of _rebuildTransectsPhase1 during init from gui
bool_reverseOnly;// if this is true _rebuildTransectsPhase1() will reverse the path only, _rebuildTransectsPhase1() resets _reverseOnly
bool_doFastRecalc;// fast recalc of transects if set, see _rebuildTransectsPhase1 for furhter explanation