I see what you mean I was completly wrong about the teatragon. So in this case all the panels used in fosters porject are flat and perpedicular to the curvature. Is that Right?
Thank you again On Apr 1, 3:41 pm, David Rutten <da...@mcneel.com> wrote: > Tetragonal doesn't mean a square base. A tetragon is what you get when > you deform a rectangle. A 'regular tetragon' is what you get when you > skew a rectangle.http://www.mathopenref.com/tetragon.html > > The angles and dimensions of each panel may still be different. > > I think the main reason Foster picked this solution is because all the > panels are flat, which makes them cheaper (actually, I know that's why > they did it, because I spoke to them about it). > > -- > David Rutten > da...@mcneel.com > Robert McNeel & Associates > > On Apr 1, 5:59 am, Claudio <claudioarch...@gmail.com> wrote: > > > Hello David. > > > Glad you"ve answered. > > > I dont really know if the panels are really identical. The only fact > > that makes me think of that is an article in the detail magazine (an > > architectural german magazine) they explain that the panels are > > Tetragonal, Which means that they have a square base (a ; a) and a > > different height (c). So iI'm guessing that at least the panels are > > identical y the x & y axis. Otherwise as architect my self, I know > > that curved surface are very difficult to populate with a single panel > > solution, but is this solution that we all try to acheive. > > > Anyway I'll continue my research. If you have any more ideas on how to > > acheive this just keep me posted plz. > > > Thank you > > > On Mar 31, 4:03 pm, David Rutten <da...@mcneel.com> wrote: > > > > Hi Claudio, > > > > how do you know the panels in the Foster design are all identical? > > > > Panelling with identical panels is a very complicated area of > > > geometry. There are a number of obvious solutions: > > > > - rectangular, triangular and hexagonal planar grids) > > > - icosahedrons and other platonic solids > > > - singly-curved surfaces with rectangular panels (this one only works > > > for identical panel shape, not joint-angle) > > > - special cases where the underlying surface is a direct emergent > > > result of the panel geometry (for example penrose tilings) > > > > And then there are weird special cases. > > > > I found that many architects/engineers who face a facade-panelling > > > problem don't even try and come up with a single panel solution. > > > Instead, they try and minimize the number of different panels they > > > need to build the whole shape more or less accurately. This is always > > > a per-project problem that requires a per-project solution. Sometimes > > > they'll even design the panel and the underlying surface at the same > > > time, which gives you much more possibilities for solutions. > > > > -- > > > David Rutten > > > da...@mcneel.com > > > Robert McNeel & Associates > > > > On Mar 31, 12:23 pm, Claudio <claudioarch...@gmail.com> wrote: > > > > > Hi David, > > > > > Can you please be more specific, In which cases this can be possible? > > > > I'm also iterested in diving a surface with identical panels. Please > > > > refer to this article for an exemple > > > > :http://www.detail.de/rw_5_Archive_En_HoleArtikel_5990_Artikel.htm > > > > And the architects website > > > > :http://www.fosterandpartners.com/Projects/1276/Default.aspx > > > > > In this case the roof has been divided with a glass pane responding to > > > > a very simple rule called Tetragonal crystal system. (http:// > > > > en.wikipedia.org/wiki/Tetragonal_crystal_system). I guess the > > > > curvature of the surface is a critical parameter in this case. > > > > > I'll be more then happy to continue this subject > > > > > Thank you all > > > > > On Mar 30, 4:06 pm, David Rutten <da...@mcneel.com> wrote: > > > > > > Hi Steve, > > > > > > creating a filling pattern with identical panels is only possible in a > > > > > very small subset of cases. > > > > > It's also impossible to create a closed pattern of hexagons on a > > > > > freeform surface, unless you allow the hexagons to be non-symmetrical. > > > > > > -- > > > > > David Rutten > > > > > da...@mcneel.com > > > > > Robert McNeel & Associates > > > > > > On Mar 30, 2:35 am, Steve Townsend <stownsend_...@hotmail.com> wrote: > > > > > > > Hi, I am very new to grasshopper and beginning to get my head around > > > > > > how to do things. > > > > > > > The main thing I am trying to achieve is a curving surface made up > > > > > > of > > > > > > a hexagonal grid (or even better equillateral triangles) that > > > > > > redefines itself when the surface changes shape. > > > > > > > An example of the sort of thing i wish to > > > > > > achieve:http://3.bp.blogspot.com/_pYWndsXyWeQ/Sb3_MS2utmI/AAAAAAAAChw/Z7dZW1y... > > > > > > > I have followed the diagrid and panelling tutorials in the primer > > > > > > but > > > > > > I need to create a grid where all panels are of identical size. > > > > > > > Please could someone point me in the right direction of a way in > > > > > > which > > > > > > I might achieve this? Does anyone know of any tutorials along these > > > > > > lines? > > > > > > > Many thanks, > > > > > > > Steve Townsend
