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extract parametric curve on surface?

adamohernadamohern Member, OS Professional Posts: 216 PRO
Can I extract an isoparametric curve from a surface? Put another a way, a curve that follows the U or V direction of the surface perfectly at a specific parameter? Something like evFaceTangentPlane() except grabbing a curve instead of a plane.


  • Options
    ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 1,185
    Sorry, we don't support this yet.

    Until we do, I can imagine building an approximation by sampling points on the isoparametric curve with evFaceTangentPlane(), building a short line segment that extends in both directions along the normal at each sample point, lofting between them, and intersecting the original surface with the loft surface (say, by splitting the loft surface with the original and using the resulting edge).  That should give a very good approximation with a relatively small number of sample points.
    Ilya Baran \ VP, Architecture and FeatureScript \ Onshape Inc
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    adamohernadamohern Member, OS Professional Posts: 216 PRO
    Thanks, Ilya. The mere thought of that makes me feel dirty. I can't do it, sarge! I just can't!

    I'll work around it.
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