Hi, I write a little DOTNet Component (CA_2_5.ghx). See link below
http://grasshopper3d.googlegroups.com/web/CA_2_5.ghx?hl=en&gda=g-xnSzwAAAC19Ve3i4OoV9kZmG4Q4mscB9jxHmc4WMBIV2rmTKK94gORp8t5mCLhzSDCcbjC-7P9Wm-ajmzVoAFUlE7c_fAt&gsc=VCP2igsAAABN1UfiIOuJWTdf_nAQhPXd I am interested in continious CA. So I took the New kind of Science, Wolfram, page 156ff. The CA Component gives you a number between 0 and 1 for each cell. You can change the grid of numbers of cells and time steps. So the given value could be the height of a point or the radius of a circle. The information could be linked to any geometry. But still the time of calculation is very big. Dan, I have seen your work. I like it. Jörg On Feb 8, 8:06 pm, Dan <[email protected]> wrote: > Cool stuff guys > > Another option would be to use a 2D continuouscellularautomata- so > rather than just being on or off, each cell has a value between say, 1 > and 100. Then at each iteration, each cell updates to some new value > based on an equation of its previous value and those of its > neighbours. > I was playing around with this in Processing a while ago, > > take a look at the videos here:http://vimeo.com/album/41270 > there's links to source code there too > > I love how such simple code with just slight changes in the constants > of the equations can give such radically varied results. > > In those animations the cell value is determining a colour, but what > would be really interesting would be to make it control Z > displacement. I didnt try this yet, because I havent learned any 3D > stuff in processing, but it might be easier in Grasshopper. > > (I did try linking the cell value to a musical note - and it sounds > awful ! > :http://createdigitalmusic.com/2008/11/14/help-im-trapped-in-an-acid-c... > ) > > On Feb 7, 12:21 pm, visose <[email protected]> wrote: > > > > > I problem i see with 3dcellularautomatais how you visualize the > > growth. A camera outside the 3d grid will have visibility quickly > > blocked by the outer cubes. But you can also project a 2d grid in a 3d > > surface and use 3d geometry for the cells like in the video i posted > > above. For the initial generation i used two lists of numbers, one for > > the x values and one with y values, but this is not very intuitive. > > The method David suggests about placing points on the grid and then > > finding out with cells correspond to the points would be the best > > approach for ease of use, i think. > > > On Feb 7, 12:31 pm, David Rutten <[email protected]> wrote: > > > > Hi cg, > > > > in theory it doesn't really matter how many dimensions you use for a > > >cellularautomata, but there are physical constraints that you should > > > ponder. The amount of memory and processing time needed for an extra > > > dimension is not insignificant and may well prove too much. Typically, > > > algorithms that deal with CA store data in exceptionally efficient > > > ways, but data in Grasshopper has a larger memory footprint than data > > > inside pure DotNET or C++ environments and it also requires a lot of > > > type-testing. There's no way for the user to optimise the memory usage > > > of a Grasshopper network. > > > > Initial conditions can be set up through a number of ways. You could > > > create geometry in Rhino which set initial conditions (for example, > > > put point objects inside each cell that you want to enable), or you > > > generate a list of numbers that identify the 'on' and 'off' state of > > > cells. You can then easily import this text using the 'Manage > > > Collection' feature on the Integer parameter. > > > > -- > > > David Rutten > > > [email protected] > > > Robert McNeel & Associates > > > > On Feb 6, 9:50 pm, cgkahler <[email protected]> wrote: > > > > > hi, i am an architecture student and I am very interested in exploring > > > >cellularautomatawith grasshopper. I had alot of luck with the > > > > definition posted above but was wondering if it is possible to... > > > > > (1) create a three dimensionalcellularautomata > > > > > (2) specify the initial generation (which cells are on/off) > > > > > unfortunately i am just beginning to become familiar with these topics > > > > and any help would be greatly appreciated
