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Convert a series of connected lines to a smooth spline

bert_drakebert_drake Member Posts: 3
When drawing a sketch, is there any way to convert a series of lines to a smooth spline, or polyline, like in autocad? 

Comments

  • mthiesmeyermthiesmeyer Onshape Employees Posts: 115
    Hi Bert,

    You can use the `Composite Curve` tool to convert multiple curves into one curve when you are using it with other features. You can see the help page here.

    Best,

    Mike
  • billy2billy2 Member, OS Professional, Mentor, Developers, User Group Leader Posts: 2,068 PRO
    edited June 2017
    bert-

    Here's 3 lines in a sketch:


    As Michael says, composite curve:


    I wrote this fit spline with feature script that builds a smooth curve through input geometry & fit parameter:



    Theres also a fit spline in the curves menu drop down, which is driven by vertices & magnitudes:


    So what's the difference in my fit spline & OS's fit spline?

    Different approaches:


    I follow curvature and they follow vertices.

    I follow the input curves based on a tolerance:





    Anyway, yes OS can compose curves in many different ways.



  • david_velozdavid_veloz Member Posts: 4 ✭✭
    If it’s a closed spline contour try exporting the sketch as a DWG (haven’t tried DXF, but may also work) making sure to check off the “Export splined as polylines” option. Create a new part and import the file you just exported.  :/
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