Catenary Curve Bug When using Non Metric Units

Replies to This Discussion

Permalink Reply by David Rutten on October 20, 2011 at 9:43am

Hi Duck,

 

it's more probable that certain distances between the end-points cause the algorithm to puke. Units don't really exist in the code, they are only used to format distances in the UI.

 

Can you post a file that fails to compute?

 

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David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Danny Boyes on October 20, 2011 at 9:46am

It doesn't like large numbers 1000+

Permalink Reply by Steve Lewis on October 21, 2011 at 11:17am

Attached example files and screen shots. I have non-dimensionalized the value for the catenary length. You can see for the case when you change units to in and allow rhino to scale the model correctly from m, we get an incorrect faceted profile for the catenary. I have experienced this issue every time i have used the catenary component in imperial units.

 

 

Attachments:

• Catenary Example 112011.gh, 3 KB
• Catenary Example 112011.3dm, 27 KB

Permalink Reply by Jack Zeng on October 22, 2011 at 3:49am

I have a same problem, but mine catenary works when units is inches and units is mm I can only get lines

Permalink Reply by Steve Lewis on October 23, 2011 at 11:58pm

Hey David did the attached help illustrate the problem?

Permalink Reply by David Rutten on October 24, 2011 at 1:12am

Yes it did. Giulio suggested a fix and it seems to work now on large distances.

 

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David Rutten

david@mcneel.com

Poprad, Slovakia