algorithmic modeling for Rhino

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Brep CP bug?
7 Replies

Dear people¡I'm experimenting what seems to be a bug getting Brep CP.In the attached image you will see the evaluated vertex cloud and the displacement vector to what I expected to be the Brep CP,…Continue

Started this discussion. Last reply by Roig Aug 23, 2012.

iges export

dear people,I've been looking for an export IGES command unsuccessfuly so, does any one knows where can I consult a library of commands or even better, does any one knows an export command already in…Continue

Started Aug 18, 2012

Bake and export component

Hello all¡ Absolute scripting newbie, please patience¡¡Is possible to create a component to bake and export to Iges a definition?I've got Piacentino's bake component, so if it is possible to create a…Continue

Started Aug 15, 2012

7 Replies

Hi all,I'm trying a solid diference between a prism and a set of little 'pipes inside of it.The thing is that the difference only computes those pipes touching the prism boundaries but those pipes…Continue

Tags: difference, solid

Started this discussion. Last reply by Roig Aug 15, 2012.


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Bilyana Savova replied to Roig's discussion Set point/lines from Rhino
"I had this problem of setting a point from Rhino as well. The thing is that 1st you need to draw the point in rhino and then add a component of a point in grasshopper >right click and set one point. Dont use point component you have used…"
Nov 27, 2015
Roig replied to Ethan's discussion ecotect , geco, and galapagos
"Dont see the point in focus in the 'colours' as long as they represent 'values' from the solar analysis. Just need to see the range of values you got from the analysis and try to fit in the middle..but numerically not…"
Nov 19, 2014
Roig replied to dvdrbls's discussion flatten surface help
"Try kangaroo. Only one thing to consider, by definitiion, double curvature sur face cant be flattened, not without aproximation/deviation. The example video that you provide isn't rigorous at all... Search the web for kangaroo...developable…"
Nov 19, 2014
Roig added a discussion to the group Hoopsnake

how to use last every iteration as input for the next one

Dear all:I´m trying to subtract a set of spagueti style cilinders from a box. Boolean solid difference only works if I only try to subtract a single cilinder but it returns nothing if I try with the whole set of cilinders (some kind of bug), so I thought, desperately, that it could be possible with HS, making a solid difference one by one.The thing is the I can't make my mind on how can I use the last solution as the input for the next solid difference in a cumulative way. maybe the images…See More
Sep 27, 2013
Roig commented on Daniel Piker's photo

Discrete Costa Surface

"awesome¡¡ thanks4sharing"
Oct 5, 2012
Roig joined Giulio Piacentino's group

Weaverbird - Topological Mesh Tools

Weaverbird brings mesh editing, subdivision and mesh transformations to Rhino and Grasshopper users.See More
Sep 16, 2012
Roig commented on miro straka's photo


Sep 10, 2012
Roig liked miro straka's photo
Sep 10, 2012
Roig replied to to]'s discussion Geco - UserProblems in the group [uto] tools Plug-ins
"dear uto] Amazing work¡¡¡  It happens the same to me, or similiar with the example file. There is a component, EcoLightCal, that becomes orange if 3d grid is On, it says: Connection with ecotec instance unsuccessful, are you…"
Sep 1, 2012
Roig joined to]'s group

[uto] tools Plug-ins

- Geco- MeshEdit- FlowLines See More
Sep 1, 2012
Roig replied to Roig's discussion Brep CP bug?
"Thank you so much. I was mad about it. Best wishes Antonio"
Aug 23, 2012
David Rutten replied to Roig's discussion Brep CP bug?
"Hi Antonio, I was hoping you'd remove more components still, but I reduced the file to the bare minimum (attached the files). You're right, the Brep CP result is indeed erroneous and it's a bug in the Rhino4 Brep Closest Point…"
Aug 23, 2012
Roig replied to Roig's discussion Brep CP bug?
"Dear David, I'm the grateful one here. thanks¡ I did cut the components that slower down the definition, and isolated the problem origin. The thing is, if I use the original brep to produce the displacement vectors, it fails, but if I…"
Aug 23, 2012
Roig liked ilona darmon's photo
Aug 23, 2012
David Rutten replied to Roig's discussion Brep CP bug?
"Hi Antonio, that's a pretty big file. I would be very grateful if you could reduce the problem to just those components that generate the supposed wrong results? -- David Rutten Poprad, Slovakia"
Aug 23, 2012
Roig replied to Roig's discussion Brep CP bug?
"Dear David, I realize that you must be a really busy person, so sorry for bothering you. I'd improve the definition (attached) but the problem still is there¡ I'll explain the def for you, it might facilitate your work towards detect…"
Aug 23, 2012

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At 1:56am on January 23, 2012, Giulio Piacentino said…

Hi Antonio,

it was more than 4 years ago, so my memory is a little vague. I think I constructed the buildings as polysurfaces, and then meshed them. This added the irregularities in the joining parts. Then I relaxed the mesh (think Kangaroo, even though it did not exist back then) and extracted the wireframe. While relaxing, the top and the bottom were fixed. They originally already had that circular form. Does this explain enough?

- Giulio

At 4:25pm on December 5, 2011, David Del Valle said…

Muchas gracias por sus palabras :) !!!

At 11:55am on September 8, 2011, Jon Mirtschin said…

Hey Antonio,


The geometry gym group is probably best place to ask questions, then I can attach files etc.  might help you with orienting a profile to a surcace (surface normal closest to path curve mid point).  I can add mesh if needed, but I'm sure in your case you can generate the underlying cylinder.


Let me know if it doesn't help.



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