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generative modeling for Rhino

brendon_carlin
brendon_carlin
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bug?
5 Replies

Started this discussion. Last reply by David Rutten May 26, 2011.

construct NurbsSurface from control points with weights
8 Replies

Started this discussion. Last reply by Florian Frank Feb 4, 2011.

antonio: remap example
1 Reply

Started this discussion. Last reply by brendon_carlin Oct 2, 2010.

 

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Adam Fenton commented on brendon_carlin's photo
Hi, I can not figure out how the definition works. Is there any chance of you uploading the rhino and gh file? Thanks
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sort rib complex geometry

Aug 28, 2011
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Adam Fenton commented on brendon_carlin's photo
This is great! are you able to share the ghx so I can learn how it is done? Thanks  
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img mesh gh

Aug 28, 2011
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David Rutten replied to brendon_carlin's discussion 'bug?'
If the curves have arc-length parameter spacing then 0.5 on reparameterized curves probably is the midpoint, but not on your regular freeform nurbs curve.   Array.Sort() is not the problem here, the bug or oversight must be elsewhere. Can…
May 26, 2011
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brendon_carlin replied to brendon_carlin's discussion 'bug?'
hmm, thanks david,   I did reparameterize the curves and check that the point was at 0.5..  but it wasn't working.
May 26, 2011
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David Rutten replied to brendon_carlin's discussion 'bug?'
Hi Brendon,   trust me, Sort works fine. If it didn't, .NET would not be usable. I think you are probably not sorting the values you think you are sorting. This line:   crvs[i].PointAt(0.5).X;   is meaningless. The PointAt()…
May 26, 2011
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brendon_carlin replied to brendon_carlin's discussion 'bug?'
thanks steve, yes, you are right about the  -1.  But I've done essentially the exact same thing you did, and the sort is not working properly.
May 25, 2011
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Steve Baer replied to brendon_carlin's discussion 'bug?'
I haven't tried this in Grasshopper, but the following code appears to work just fine.  I also noticed that your for loop is short by one. You shouldn't subtract 1 from crvs.Length.   Random r = new Random(); Curve[] crvs = new…
May 25, 2011
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bug?

Hey Guys,this seemingly simple sort operation doesn't seem to be simply working any longer. Did I miss something ?thanksCurve[] crvs = roads.ToArray();double[] xList = new Double[crvs.Length];for(int i = 0; i < crvs.Length - 1; i++){xList[i] = crvs[i].PointAt(0.5).X;}Array.Sort(xList, crvs);A = crvs;See More
Discussion posted by brendon_carlin May 25, 2011
5 Comments
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Weishun Xu commented on brendon_carlin's photo
Hi Bredon,   lovely work! I believe that the final weaver bird component is just to smooth it out, right? Would you please show a drawing of the status of the model before the mesh Brep, please? I am using some similar strategy to finish up my…
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img mesh gh

Apr 9, 2011
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Tudor Cosmatu liked brendon_carlin's photo
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loop subdivision mesh

Mar 23, 2011
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Djordje Trifunovic liked brendon_carlin's photo
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loop subdivision mesh

Feb 15, 2011
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Florian Frank replied to brendon_carlin's discussion 'construct NurbsSurface from control points with weights'
Thanks Marc, thanks David Multiply the x,y,z might be a solution as a workaround and works pretty good. Once a point is weighted and later on u want to reweight again maths is needed and it shouldn't be like this. For example the control point…
Feb 4, 2011
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David Rutten replied to brendon_carlin's discussion 'construct NurbsSurface from control points with weights'
I just checked in changes to this. The next release of Grasshopper and RhinoCommon for Rhino5 will treat Surface control-points in the same way as Curve control-points. I.e. you will no longer have to worry about adjusting the location based on the…
Feb 4, 2011
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David Rutten replied to brendon_carlin's discussion 'construct NurbsSurface from control points with weights'
This must be a bug, Rhino itself uses different kinds of control-point, but we've been trying to make RhinoCommon work just as the Weight command in Rhino.   -- David Rutten david@mcneel.com Poprad, Slovakia
Feb 4, 2011
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Marc Hoppermann replied to brendon_carlin's discussion 'construct NurbsSurface from control points with weights'
Hi Florian, The Problem lies in the way that Rhinocommon deals with control points. In rhino control points are pre-multiplied whereas in RhinoCommon they are euclidian coordinates. That means that you have to multiply the x,y,z coordinate with the…
Feb 4, 2011
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Florian Frank replied to brendon_carlin's discussion 'construct NurbsSurface from control points with weights'
hi brendon, i previously did some experiments with curve weight in c# with the new RhinoCommon SDK. Its pretty interesting how it works. You can access all the Control Points thru this SDK and modify them how David mentioned it. So i did the same…
Feb 3, 2011

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At 3:45am on September 16, 2009, Ivan KiryakovIvan Kiryakov said…
thanks!
I saw your post, i still don't quite get how you did the right orientation on the ribs..maybe because i'm still newbie in grasshopper :),
but anyway thanks
At 4:18am on May 14, 2009, Howard Jiho KimHoward Jiho Kim said…
hey. yeah i'm in korea ehehe. how's it going? have you started school yet? working at UN? let me know how you are doing.
 
 
 

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