Computational design = using computational approaches to design problems, for anything from analysis, implementation to representation...
CSG is indeed only for meshes since it's based on BSP partitioning and because of that also has a few edge cases (due to float precision) where it breaks down and can cause small holes to appear (but these can be fixed with Meshlab/Blender etc). Does OpenSCAD *not* use tessellated geometry for boolean ops? I always was under the impression it does too... need to double check! The other way to do it (and actually easier) is via voxels. There's a really old iso surface implementation in [1], but that needs a complete rewrite and is therefore not bundled with any current releases... Again, I wish there would be more activity in Clojureland underway in these non-web-tech related fields (we have dozens of server & dom libs, but not that much for design, modelling, architecture, fabrication). That's not trying to be defensive in any way, but a single person can only do that much and all the features & tools provided so far were purely developed on a need to have basis (obviously with a priority to be as re-usable as possible). Hth! K. On 25 February 2015 at 23:21, Jason Felice <jason.m.fel...@gmail.com> wrote: > So... what is "computational design"? > > I've been using OpenSCAD to make models for 3D printing, and I keep wishing > for a Clojure syntax and real functions and things. Is this it? > > (It doesn't seem to have constructive solid geometry for things which aren't > meshes.) > > -Jason > > On Wed, Feb 25, 2015 at 4:13 PM, Karsten Schmidt <i...@toxi.co.uk> wrote: >> >> That's a good point, Bruce! To be honest, I don't know anymore, but it >> makes complete sense to change it. Consider it done! :) >> >> As for your mapping question, yes, of course! I've done a few of them. >> E.g. the first pic on the website [1] was a project for The ODI in >> 2013 and is a map of different council/borough stats of London (here >> knife crime). The shape files were first retrieved & processed with >> the thi.ng/trio lib directly from the UK statistics office's SPARQL >> endpoint [2], then projected to Mercator, converted to 2d polygons, >> smoothed them and then extruded as 3D walled meshes and exported as >> STL files using geom. To create that rendered image, another function >> then combined all borough meshes into a complete render scene for >> Luxrender (using the luxor lib). Since this all was for a 60sec >> animation, I also wrote the tweeny lib for that project to allow me to >> define the timeline for the various camera, mesh, light & shader >> changes. The whole bundle was then sent to EC2 and rendered on 340+ >> CPUs... basically, spawned a private render farm. >> >> Alternatively with < 30 lines of code you could query any UK >> constituency (or use similar endpoints for other countries), do those >> initial shape transformations and send the resulting STL mesh file >> straight to a 3D printer... For online use, of course the SVG or WebGL >> modules would be more interesting, but these really would just deal >> with that last transformation/visualization step, i.e. turning a >> thi.ng.geom.Polygon2 into an SVG <polygon> node or tesselate it and >> stuff it into WebGL buffer to display... >> >> For more flexible mapping, it'd be great to port some/all of the >> projections from [3] in its own clj lib for easier (and non-JS >> related) access... >> >> [1] http://thi.ng/img/04.jpg >> [2] http://statistics.data.gov.uk/doc/statistical-geography >> [3] https://github.com/d3/d3-geo-projection/ >> >> Hth! >> >> On 25 February 2015 at 22:34, Bruce Durling <b...@otfrom.com> wrote: >> > Karsten, >> > >> > Is there a reason why you went with a README.md and then an index.org >> > rather than a plain README.org? >> > >> > (love all the rest of it and loved your use of it at The Barbican. I >> > need to get my head around it all. I'm wondering if I can use it for >> > some of the geographic and other charting things I do a lot of). >> > >> > cheers, >> > Bruce >> > >> > On Wed, Feb 25, 2015 at 5:06 AM, Karsten Schmidt <i...@toxi.co.uk> >> > wrote: >> >> Hi guys, >> >> >> >> thi.ng is a collection of over a dozen largely x-platform Clojure & >> >> Clojurescript libs for computational/generative design & data >> >> visualization tasks. >> >> >> >> I just wanted to give a little heads up that this project has recently >> >> seen a number of releases and, as a whole, by now is generally quite >> >> stable and usable (*is used*) for realworld projects (although most >> >> libs remain in constant parallel development to make them more feature >> >> complete). I've collated a number of images of projects and links to >> >> the most important libs here: >> >> >> >> http://thi.ng/ >> >> >> >> Most notably of those: >> >> >> >> http://thi.ng/geom >> >> By far the largest sub-project and backbone for most others: A 2D/3D >> >> geometry package w/ comprehensive vector algebra, swizzling, >> >> intersections, matrix types & helpers, quaternions, pure shape >> >> primitives with ~50 protocols for polymorphic enquiry & manipulation, >> >> meshes (incl. I/O), mesh subdivisions, CSG mesh ops, Verlet physics >> >> engine (only particles, springs, behaviors)... Most of this lib is >> >> pure geometry w/ no rendering specifics, although there're separate >> >> modules for SVG rendering w/ shader support & decorators [1], WebGL >> >> wrapper and converters from shapes/meshes to VBOs and various shader >> >> presets/utils. >> >> >> >> http://thi.ng/shadergraph >> >> GLSL (WebGL) pure function library & dependency graph (based on >> >> com.stuartsierra/dependency), GLSL minification during CLJS compile >> >> time >> >> >> >> http://thi.ng/color >> >> RGB, HSV, CMYK, CSS conversions, color presets (incl. D3 category >> >> schemes) >> >> >> >> http://thi.ng/luxor >> >> Complete scene compiler DSL for http://luxrender.net, based around >> >> thi.ng/geom >> >> >> >> http://thi.ng/morphogen >> >> Declarative 3D form evolution through tree-based transformations, >> >> basically an AST generator of geometric operations to transform a >> >> single seed node into complex 3D objects >> >> >> >> http://thi.ng/tweeny >> >> Interpolation of nested (presumably animation related) data >> >> structures. Allows tweening of deeply nested maps/vectors with >> >> completely flexible tween fns/targets and hence easy definition of >> >> complex timelines >> >> >> >> http://thi.ng/validate >> >> Purely functional, composable data validation & optional corrections >> >> for nested data. Supports both maps & vectors, wildcards, comes with >> >> many predefined validators, but extensible... >> >> >> >> http://thi.ng/trio >> >> A generic, non-RDF specific triple store API and feature rich >> >> SPARQL-like query engine >> >> (and my prime example of using the literate programming approach with >> >> org-mode[2][3]) >> >> >> >> Last but not least: Super special thanks are due to the following >> >> people: >> >> >> >> Rich, Alex + rest of clojure.core >> >> David (+everyone else involved) for the immense effort on making CLJS >> >> proper useful, >> >> Chas, Kevin and anyone else working on CLJX... >> >> none of this would have been possible without these amazing tools! >> >> >> >> Best, K. >> >> >> >> Ps. There're a number of other libs in this collection which are in >> >> dire need of updating (last touched spring 2013) - these are related >> >> to general OpenCL functionality and voxel rendering. Some of the >> >> example images on the above site were created with these... >> >> >> >> [1] >> >> https://github.com/thi-ng/geom/blob/master/geom-svg/src/examples.org >> >> [2] https://github.com/thi-ng/trio/blob/master/src/query.org >> >> [3] http://orgmode.org/ >> >> >> >> -- >> >> Karsten Schmidt >> >> http://postspectacular.com | http://thi.ng/ >> >> >> >> -- >> >> Note that posts from new members are moderated - please be patient with >> >> your first post. >> >> --- >> >> You received this message because you are subscribed to the Google >> >> Groups "ClojureScript" group. >> >> To unsubscribe from this group and stop receiving emails from it, send >> >> an email to clojurescript+unsubscr...@googlegroups.com. >> >> To post to this group, send email to clojurescr...@googlegroups.com. >> >> Visit this group at http://groups.google.com/group/clojurescript. >> > >> > -- >> > Note that posts from new members are moderated - please be patient with >> > your first post. >> > --- >> > You received this message because you are subscribed to the Google >> > Groups "ClojureScript" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an email to clojurescript+unsubscr...@googlegroups.com. >> > To post to this group, send email to clojurescr...@googlegroups.com. >> > Visit this group at http://groups.google.com/group/clojurescript. >> >> >> >> -- >> Karsten Schmidt >> http://postspectacular.com | http://toxiclibs.org | http://toxi.co.uk >> >> -- >> 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 >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > > -- > 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 > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- Karsten Schmidt http://postspectacular.com | http://toxiclibs.org | http://toxi.co.uk -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
