Wow very cool :) On Wednesday, March 21, 2012, Karsten Schmidt <i...@toxi.co.uk> wrote: >> For 3D calculations, (verlet) physics and more there's the java library >> toxiclibs (http://toxiclibs.org), whose author is currently porting/wrapping >> to Clojure. It's not really a cut-and-dried solution, but it's pretty >> flexible and has a simple API unlike a lot of 3D projects which focus >> very narrowly on games development. > > Hi guys, > > the Clojure version of toxiclibs is NOT going to be a wrapper of the existing Java version, but a complete re-write & opportunity to re-think the current architecture and benefit from Clojure's qualities (e.g. protocols & concurrency). Also, both the Java and the upcoming Clojure version are actually only focussed on generic operations & data structures for 2d/3d geometry tasks, interpolation, verlet physics simulation, voxels, color theory and related concepts. Neither deals with rendering/displaying the results. > > So far the Clojure version is still very alpha, and only parts of the core library have been implemented (geometry tools, mesh & OBJ export)... > > The repository is here (but lacking any documentation, check the tests, though, for general usage): > http://hg.postspectacular.com/toxiclibs.clj/ > http://hg.postspectacular.com/toxiclibs.clj/src/tip/test/toxi/test/geom.clj > > A recent version is also on Clojars: > > [org.toxiclibs/toxiclibs-clj "0.2.0-SNAPSHOT"] > > As mentioned, am making heavy use of protocols (and defrecords). Here's a slightly outdated map to show the overall structure: > > http://flickr.com/photos/toxi/7002599609 > > To give you a better idea, below is also a little example to generate a 3D cog mesh and export it as OBJ model (e.g. for 3D printing or use with other 3D tools): The fn creates a circle, converts it to a polygon, deforms the perimeter to create teeth based on a user provided profile, then tesselates & extrudes the polygon into a triangle mesh... > > (use 'toxi.geom.core 'toxi.geom.polygon2d 'toxi.geom.mesh.objexport) > > (defn cog > [radius teeth profile depth] > (let[nump (count profile) > parts (-> > (circle radius) > (->polygon2d (* teeth nump)) > :vertices > (->> (partition nump))) > poly (-> > (map (fn[_] (map (fn[v s] (scale-n v s)) _ profile)) parts) > flatten > polygon2d) > mesh (tesselate poly) > mesh (add-meshes mesh > [(-> mesh flip (transform (translate (matrix4x4) 0 0 depth))) > (extrude poly (vec3d 0 0 1) depth)])] > mesh)) > > (spit "cog.obj" (->obj (cog 100 10 [1 1.25 1.25 1] 20))) > > Result: http://flickr.com/photos/toxi/6856447350/ > > Best, > K. > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en
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