Netlogo shapes how to#
Netlogo shapes Patch#
Netlogo shapes code#

So you might want to something like like generating n random points and then keeping the m points that are farthest from the center, without regard to convexity.) Once you've got the random polygon, apply some smoothing function to turn it into a curvy blob. (You could take the convex hull, but then you'll always get a convex shape, which might not be 'blobby' enough for you. Generate a random polygon by scattering points around the world, then discarding some or all points in the middle. You'll need some trick to avoid a discontinuity where theta = 0, perhaps by using a smoothing function that wraps. In order to force the blob to have the desired area, first generate the whole curve, then scale it as needed. You'll need a way to get smooth random variation in the radius, perhaps by generating random numbers and then applying a smoothing function to them. To get the desired area, vary the threshold until the target is reached.ĭraw a curve around the center point using polar coordinates, where theta goes from 0 to 360 and 4 varies randomly.

Netlogo shapes code#

(See the Diffusion Graphics model, in the Art section of NetLogo's Models Library, for code for this you'll want to turn world wrapping off, though.) Then select only those patches where the 'elevation' exceeds some threshold. To make a smooth landscape around these peaks. Scatter random points around the world, use But just off the top of my head, I have three ideas:

Netlogo shapes how to#

You'll need to pick an approach, then try to figure out how to express that approach in NetLogo code.Īs for what approach to pick, I imagine there's literature on this if you search. Fixing the area of the blob makes it even harder. Generating random blobs is a hard problem with no obvious solution. Set border (patch-set border neighbors4) with Let border patch-set of blob-makerĪsk min-one-of border [ I noticed that my answer runs quite slowly when you have a gigantic number of patches. Making it bigger results in thinner, more sporadic blobs (though you run the risk of getting disconnected patches). Making the turtle's step size smaller makes the blob more circle-y. This naturally produces nicely curved blobs. The turtle does this a number of times equal to the desired area.Īsk min-one-of patches with

Netlogo shapes Patch#

After each step, they set the uncolored patch closest to them to the desired color. This section could contain a reference to the model's URL on the web if it has one, as well as any other necessary credits or references.Įvery 0.I found a really simple approach that produces pretty nice results.Ĭreate a turtle. This section could give the names of models in the NetLogo Models Library or elsewhere which are of related interest. It might also point out places where workarounds were needed because of missing features.

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