# Import Curves using Rhynamo

**URL:** <https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946>\
**Category:** Geometry\
**Tags:** revit, rhynamo\
**Created:** [October 26, 2017, 9:30am UTC](https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946 "2017-10-26T09:30:38Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![j.greenV8SX9](https://avatars.discourse-cdn.com/v4/letter/j/e19adc/32.png) [@j.greenV8SX9](https://forum.dynamobim.com/u/j.greenV8SX9)\
**Post date:** [October 26, 2017, 9:30am UTC](https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946/1 "2017-10-26T09:30:38Z")

</div>

Hi all,

I am trying to bring Rhino Arcs into Revit and developed a very simple workflow to do this. This was working fine a month or so ago and I have now returned to update the geometry and the arcs I am bringing in to Dynamo have an inverse sweep angle. For example if I have an arc with an angle of 10 degrees, Dynamo will create an arc with a sweep angle of 350 degrees.

Has anyone had this problem before?

I have been trying for hours to find the issue. I really don’t want to change the script as it was working before. My IT department had installed a new version of Dynamo (1,3) on my machine. Thinking this could be the problem I had them reinstall the original version I had used (1,2,1), but I still have the same problem.

Any help would be much appreciated. As I say I was using Dynamo 1,2,1 on Revit 2016 and Rhino 5.

 ![Dynamo Screenshot](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/2/f262c95ceaab0a7dc1cb778c33d72c5e400a76b3.JPG)

The Rhino and Dynamo files are at the link below  
[https://wetransfer.com/downloads/ac393676627306c13b1e4c5224c35ca620171026121516/4edf03792801e59f3426dc798a8b7fe620171026121516/e4db6b](https://wetransfer.com/downloads/ac393676627306c13b1e4c5224c35ca620171026121516/4edf03792801e59f3426dc798a8b7fe620171026121516/e4db6b)

---

<div class="post-metadata">

**Author:** ![j.greenV8SX9](https://avatars.discourse-cdn.com/v4/letter/j/e19adc/32.png) [@j.greenV8SX9](https://forum.dynamobim.com/u/j.greenV8SX9)\
**Post date:** [October 26, 2017, 10:47am UTC](https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946/2 "2017-10-26T10:47:38Z")

</div>

An update on this, I have the same issue when using Mantis Shrimp

---

<div class="post-metadata">

**Author:** ![visualizor](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/visualizor/32/29555_2.png) [@visualizor](https://forum.dynamobim.com/u/visualizor)\
**Post date:** [October 27, 2017, 5:30pm UTC](https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946/3 "2017-10-27T17:30:41Z")

</div>

a quick fix that has worked for me is to flip your arc direction in the rhino file

I personally think you could try importing three points on the arc and reconstruct it in dynamo. May require a little grasshopper work or even custom script tho

---

<div class="post-metadata">

**Author:** ![j.greenV8SX9](https://avatars.discourse-cdn.com/v4/letter/j/e19adc/32.png) [@j.greenV8SX9](https://forum.dynamobim.com/u/j.greenV8SX9)\
**Post date:** [October 30, 2017, 9:51am UTC](https://forum.dynamobim.com/t/import-curves-using-rhynamo/15946/4 "2017-10-30T09:51:50Z")

</div>

And that is the reason I am a novice, so easy when you know how! Visualizor thank you so much this worked perfectly.