How do I scale a ofPolyline? or convert `ofPolyline` to `ofPath`?

@batchku wrote:

Hello,

I would like to scale up an ofPolyline that i'm getting from and ofxCv::contourFinder.
I see that ofPath has a scale method but ofPolyline does not.

What would be the best way to convert an ofPolyline to an ofPath and back, so that I can scale?

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