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static L onePathToPolarIntervals_v1(OnePath path, int nIntervals) {
if (path == null) null;
L out = emptyList(nIntervals);
int iPath = 0, lPath = path.size();
double step = lPath/nIntervals;
var it = path.pointIterator();
Pt p = it.next(), lastPoint = p;
for i to nIntervals: {
int iPath2 = iround((i+1)*step);
while (iPath < iPath2) {
p = it.next();
iPath++;
}
out.add(PolarPt(p.minus(lastPoint)));
lastPoint = p;
}
ret out;
}