Roel van de Straat's Page

Roel van de Straat joined Giulio Piacentino's group

Weaverbird - Topological Mesh Editor

Weaverbird is a topological modeler that contains many of the known subdivision and transformation operators, readily usable by designers. Instead of doing the work repeatedly, or sometimes using complicated scripts, this plug-in helps reconstructing shapes as meshes, subdivides and refines even polyline lists, and helps preparing the model for fabrication. Weaverbird is the first released addon for Grasshopper but the group is new, so please join it to participate in discussions, ask questions…See More

Nov 10, 2012

Spyros replied to Roel van de Straat's discussion Visibility of points on an edge - occlusion

"Well, it seems to me that the number of rays that are occluded is the same as the total number of rays, so no problem... Or maybe I didn't understand well what you are asking. "

Jan 25, 2012

Roel van de Straat replied to Roel van de Straat's discussion creating a coloured mesh

"Great! Thank you. Roel."

Feb 10, 2011

David Rutten replied to Roel van de Straat's discussion creating a coloured mesh

"Yes, if you supply a mesh with VertexColors then Grasshopper will draw it like that. But you need to make sure you supply the exact same number of colours as there are vertices, otherwise the colours will be ignored. -- David…"

Feb 10, 2011

Roel van de Straat replied to Roel van de Straat's discussion creating a coloured mesh

"Thank you David, to -hopefully- be a bit more clear, I am creating a mesh in the custom component and I would like to assign colours to the vertices. This in order to get a similar output when using for instance the Gaussian curvature…"

Feb 9, 2011

David Rutten replied to Roel van de Straat's discussion creating a coloured mesh

"Hi Roel, I don't get it, are you creating meshes or requesting them as an input parameter? Basically Mesh Vertex Colours need to be applied for every vertex. The easiest way is to create a monotone mesh (the same colour for all…"

Feb 9, 2011

Roel van de Straat posted a discussion

creating a coloured mesh

Hi all, I'm trying to develop a custom component which adds a colour gradient to a mesh created from a Brep (inputBrep), however I can't get the hang of working with the MeshVertexColorList collection. The (summarised) code below (just adding the colour red to all vertices in this example) leaves me with an error unfortunately. Could someone give an explanation on1) how to work with the MeshVertexColorList to output it as a collection of colours so I could use this as an input for the GH MCol…See More

Feb 9, 2011

4 Comments

Roel van de Straat replied to Roel van de Straat's discussion Invalid cast: surface input

"Thanks again David. I will go through the documentation at http://wiki.mcneel.com/developer/rhinocommon and try to update the code. Regards, Roel."

Jan 20, 2011

David Rutten replied to Roel van de Straat's discussion Invalid cast: surface input

"Yes. "it cannot be OnSurface, classes that start with "IOn", "On", "MRhino" and "IRhino" are part of the old SDK. GH 0.8 uses RhinoCommon which has different class and interface names. You…"

Jan 20, 2011

Roel van de Straat replied to Roel van de Straat's discussion Invalid cast: surface input

"Thanks David, that indeed solves one problem. The other is then; I can't use the SDK class and interface names, such as OnSurface in GH 0.8? Does that mean that 1) I have to rewrite the code following the RhinoCommon naming, remove…"

Jan 20, 2011

David Rutten replied to Roel van de Straat's discussion Invalid cast: surface input

"Hi Roel, it cannot be OnSurface, classes that start with "IOn", "On", "MRhino" and "IRhino" are part of the old SDK. GH 0.8 uses RhinoCommon which has different class and interface names. But…"

Jan 20, 2011

Roel van de Straat posted discussions

Jan 20, 2011

Roel van de Straat replied to YJ's discussion Exposure and Occlusion components exemple?

" Hi Andrew, I am working on a definition that should provide me with the number of points on a curve that can be seen from a distant point while being obstructed by a surface. I am using the occlusion component for this, but…"

Jan 20, 2011

Roel van de Straat replied to Roel van de Straat's discussion Plane definition

"Thanks guys, my curiosity has been answered :)"

Aug 19, 2010