Hi,
I think that you can solve your problem by using function PlotLine. You would divide your turbine in to 4 quadrants and drav a plot in each quadrant. For doing that you need some cicode. And if you want i can assist you.
Info about function PlotLine:
PlotLine(hPlot, PenStyle, PenCol, PenWidth, MarkerStyle, MarkerCol, nMarker, Length, pTable,
LoScale, HiScale, Mode). I would yust change the values in pTable, LoHiScale and Mode. With mode you define where is the origin of plot.
P.s. I would also recomend you that you upgrade to latest SP that's SP5A for V7.2.
Kind regard,
Ales Bezeljak