Extend Surface

Hi there,

I found this fantastic (appears simple too) VB component by Fred B ecquelin from this post: http://www.grasshopper3d.com/forum/topics/how-to-extend-a-surface-i...

I have attempted to adapt this component (VB scripting), so that it can extend a surface at more than one direction at once, but have had no luck.

I am wondering if there is a way to extend a surface in GH like you do in Rhino, but in more than one direction at the same time.

Thanks

Matt

Attachments:

Img_1.JPG, 121 KB

Replies to This Discussion

Permalink Reply by Mostapha Sadeghipour Roudsari on June 19, 2013 at 5:08pm

Can't you just apply the extend two times to the surface?

srf = Surface.Extend(Isostatus.North, Length, Smooth)

finalSrf = srf.Extend(Isostatus.South, Length, Smooth)

Permalink Reply by Matthew McFetridge on June 19, 2013 at 6:02pm

Thanks for the reply Mostapha,

I cannot seem to make this work, I have this so far:

    Dim Isostat As IsoStatus

    If Length <= 0 Then

      srf = Surface
      finalSrf = srf

    Else

      Select Case Edge
        Case 0
          Isostat = Isostatus.North
        Case 2
          Isostat = Isostatus.South
        Case 1
          Isostat = Isostatus.East
        Case 3
          Isostat = Isostatus.West
      End Select

      srf = Surface.Extend(Isostatus.North, Length, Smooth)
      finalSrf = srf.Extend(Isostatus.South, Length, Smooth)

    End If

I'm probably doing something simple wrong hopefully..

Permalink Reply by Mostapha Sadeghipour Roudsari on June 19, 2013 at 6:13pm

Hi Matt, I don't know how to write it in VB but attached is the script in Python. Hope it helps. :)

Attachments:

extendSrf.gh, 2 KB

Permalink Reply by Matthew McFetridge on June 19, 2013 at 6:22pm

Thanks that is exactly what I need!! :)

I hate to do this sorry because i'm getting you to do the work for me... But Is there a way to create an input (like the surface) that controls the extend amount? Rather than opening the script and doing this manually?

Permalink Reply by Mostapha Sadeghipour Roudsari on June 19, 2013 at 6:29pm

No problem at all! Attached is the new version. You can change both the direction and the distance.

Attachments:

extendSrf_2.gh, 6 KB

Permalink Reply by Matthew McFetridge on June 19, 2013 at 6:33pm

Awesome! Thank you so much Mostapha!

Best,
Matt

Permalink Reply by Mostapha Sadeghipour Roudsari on April 7, 2014 at 7:54am

Hi mhana, I'm not sure what your surface looks like. Can you upload your file or an image.

Permalink Reply by Matthew McFetridge on April 8, 2014 at 2:44am

Seen as there is no curved surfaces or any automation to be built in (from your example at least) why don't you select the edge curves (or faces) you want and extrude them

Permalink Reply by djordje on April 8, 2014 at 3:16am

Your two roof planes are consisted of a brep (polysurface) not a surface. Explode that polysurface into two surfaces, then attach each of those to Mostapha's component.

Permalink Reply by Daniel on November 16, 2019 at 2:20am

Works for Patch also which is what I need!

Many thanks!

Permalink Reply by Ivan Cholakov on December 10, 2015 at 3:13am

This is great!

But i`d need to make a step back because i need a surface extension in one single direction. The link that Matt gives in the beginning isn`t active anymore (VB component by Fred B ecquelin)

Regards!

Ivan

Permalink Reply by Ivan Cholakov on December 10, 2015 at 3:14am

Hey! The link to VB component by Fred B ecquelin`s one way surface extension would be useful to me, but it isn`t seem to be active anymore :/

I need to extend a surface (a curved one) in one direction.

Thanks!
Ivan