question about trimming curves

hi everyone!

I hadn´t tried the trimming tools until now and I made a mess of them.

I´d like to trim a curve the way you can see in the image below and I found that the trim with regions tool doesn´t work the way I thought: splitting the curve with each line not with each pair of lines.

any help?

cheers

Attachments:

trimming.jpg, 150 KB

Replies to This Discussion

Permalink Reply by David Rutten on April 23, 2010 at 5:26am

Hi Miguel,

the Region components all require closed curves because there needs to be an unambiguous inside/outside condition. It seems to me you want to split (not trim) the curve at the intersection points. Is that correct?

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Miguel Vidal on April 23, 2010 at 5:40am

hi David,

that´s correct, I´d like to split the curve. I didn´t know how to translate it to BReps

Permalink Reply by David Rutten on April 23, 2010 at 6:28am

Breps? What Breps?

Splitting a curve at a number of points is best achieved with the Shatter Curve component I think. You'll have to create a list of splitting parameters, then you'll be able to get all the segments in one go.

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Miguel Vidal on April 23, 2010 at 9:11am

I meant the"BReps" in "split with BReps". I just tried the shatter command and that was exactly what I needed!

the "t" input has to do with the domain of the curve, isn´t it?

Permalink Reply by David Rutten on April 23, 2010 at 9:43am

Yes, you almost always need curve parameters (typically denoted "t") when you're dealing with curve evaluation. You can get curve parameters with the CurveCP component, or with the EvaluateLength component, or using any of the Curve Intersection components or, or, or...

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Miguel Vidal on April 23, 2010 at 10:17am

thanks, david

cheers!

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