RHINO5 and Curve domain

I don't understand why in Rhino 5 the single span curves (i.e. degree 2 an 3 control points result parametrized in accordance with lenghts and not in accordance with domain).

Tha same curve in rhino 4:

and in Rhino 5

I need some help

thank you

Davide

Replies to This Discussion

Permalink Reply by David Rutten on August 4, 2011 at 3:11pm

Curves can have any domain you want them to have, as long as it's not zero-length. It all depends on how you made the curves and what happened to them afterwards. Did you make these curves in exactly the same way? If so, what way was that?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Davide on August 4, 2011 at 3:46pm

Hi David,

thanks for your reply. I used the same command in Rhino 4 and 5: control point curve and nothing is happened afterwards.

sequence:

1. I selected control point curve (degree:2 persistentclose:no)

2. I picked 3 control points

3. I evaluated domain by details command

thanks

Permalink Reply by David Rutten on August 4, 2011 at 4:47pm

Ok yes, I can repeat that. Rhino4 creates a 0~1 domain while Rhino5 creates a 0~length domain. We must have changed this command, perhaps someone decided that length based domains work better or faster when it comes to intersections or something.

I don't think there's a bug, it looks like a conscious change. Why is this giving you problems? I mean, why do you care what the domain is set to? I don't mean that in a derogatory manner at all, it's just that you can never rely on a curve domain having a specific value so if this is causing you problems, I think there are some deeper faulty assumptions.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Davide on August 5, 2011 at 9:25am

hi David,

thanks for the clarification. No problem at all...just the curiosity to understand if it was my mistake, a bug or a "conscious change".

thanks again

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