Close Curve

Hey Guys,

Is there any command on grasshopper to 'close curve', as in rhino.

Thank you

Replies to This Discussion

Permalink Reply by kleerkoat on April 11, 2010 at 2:50pm

searched "close curve"

Permalink Reply by Arthur Mamou-Mani on April 12, 2010 at 5:03am

Thanks ryles,
There is a rhino command called "Close Curve" which would close any curves directly.
It d be great if there was a simple tool like that on GH.

Permalink Reply by Danny Boyes on April 12, 2010 at 5:27am

Rhino's CloseCrv simply uses a Line to close it. As it isn't a curve why not just get the End Points Component and attach a Line to them.

If you have a multiple segment curve to close pass it through the Join Curves Component first

Permalink Reply by Danny Boyes on April 12, 2010 at 5:58am

Further to this, there is n easy way to create a curve to close them off similar to the Rhino Command BlendCrv. Use the BzSpan Component to create a curve based on Starting and Ending Points and Tangents. To get a nice blend I used a third of the distance between the two points as a Magnitude for the Vectors. I try and post an example when I get back from Lunch if you need it.

Permalink Reply by Tushar Sharma on April 12, 2010 at 6:46am

hey,
its would be great if u can post an example..
thanks a lot

Permalink Reply by Danny Boyes on April 12, 2010 at 6:58am

Here you go, slightly different in the newer version than what I remembered.

In the older version you could change the amplitude of the vector and influence the amount of tangency to the continuation.

EDIT:

My mistake I've used the wrong component, the one above is a BiArc. Try this instead for the BzSpan

Permalink Reply by Tushar Sharma on April 12, 2010 at 7:34am

thanks a lot danny.. hey can u resend me the image without switching the draw icons.. i am not used to it as i am new to grasshopper..
thank u

Permalink Reply by Danny Boyes on April 12, 2010 at 7:58am

Here's the file (see below)

I personally would recommend the change to Icons as I found that if anyone used a component that I didn't recognise then I could see it in the toolbar as they are the same images.

The Components Used are:
End Points, Curve CP, Evaluate Curve [Curve>Analysis]
Distance [Vector>Point]
Multiplication [Scalar>Operators]
Reverse, Amplitude [Vector>Vector]
Bezier Span [Curve>Spline]

Attachments: