I think someone did a 3D version in APL quite a while ago but I have no idea where it may have gotten to.
On Thu, Feb 18, 2021 at 12:19 PM Ian Clark <earthspo...@gmail.com> wrote: > @ Devon > A hexagonal grid for game of Life sounds really fascinating! Even though > it's been tried (and works fine): > https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life#Variations > Unfortunately the illustration there is a gif, not a svg. Else it might > have given you a flying start with your hexagonal universe. > > …Having said that, there's a hexagonal grid here: > > https://en.wikipedia.org/wiki/Euclidean_tilings_by_convex_regular_polygons#/media/File:1-uniform_n1.svg > …and it looks like there's a row for each hexagon, and they could in > principle be individually filled (or the rows shuffled using J into 2 or > more blocks with a different value of "fill:") > > Keep us informed. 3D next: close-packed spheres. If you can't make it work > pleasingly, how about varying the probability of a stochastic breeding > rule? > > After Conway's Game of Life, the Ising Model ought to be interesting in 3D. > > Plus I'm feeling the need for a hexagonal variant of viewmat (it's just > alternately staggered matrix rows after all)! > > …and I was just wondering what I was going to do this evening! > > Ian > > On Thu, 18 Feb 2021 at 16:28, Ian Clark <earthspo...@gmail.com> wrote: > > > Yes, I'm sorry. Attachments used not to work – and then I thought I saw > > evidence that they did. > > > > I had actually given the link to its wiki page in my first post, but not > > the full path: > > > https://en.wikipedia.org/wiki/SVG_animation#/media/File:Morphing_SMIL.svg > > > > On Thu, 18 Feb 2021 at 15:24, Hauke Rehr <hauke.r...@uni-jena.de> wrote: > > > >> the attachment didn’t make it through > >> I got used to just adding a .txt extension > >> and it usually works with non-binary stuff > >> (or at least txt-like mime types) > >> I even managed to get pdfs through that way, > >> iirc. > >> > >> Am 18.02.21 um 16:15 schrieb Ian Clark: > >> > Glad to find enthusiasts for SVG – I thought mine was a minority > >> interest. > >> > > >> > And thanks Bill for letting me know there's a dedicated SVG widget: > >> svgview. > >> > Long time since I played with isigraph/isidraw. I recall a html widget > >> in > >> > Qt, of limited capability, and didn't expect it to handle SVG too. But > >> > webview, I see, is what addon 'debug/jig' actually uses to display a > >> SVG, > >> > which it builds from the ground up. > >> > > >> > One big advantage of SVG is there's so much sample code, all nicely > >> > catalogued. All SVG pics used in Wikipedia are listed here: > >> > https://commons.wikimedia.org/wiki/Category:SVG_by_subject > >> > > >> > Also most laser-cutting services accept SVG as the customer's spec. > >> > Inkscape seems to be the tool of choice, because AFAICT SVG is its > >> native > >> > format. So laser-cutting templates promise to be a good source of > simple > >> > clip-art for hacking. > >> > > >> > Bob writes > >> >> Inkscape is not bad although the SVG's produced are not always > optimal > >> > (but much quicker to develop than building by hand). > >> > > >> > Inkscape has the worst UX I've ever come across in popular freeware, > but > >> > dedicated hacks get used to anything. One big feature that blinds me > to > >> its > >> > failings is its ability to vectorize a (monochrome) photo, as bitmap > or > >> > jpeg say, into a SVG of little closed bezier curves – and to > >> progessively > >> > coarsen the picture. Some pretty inventive minimalist cartoons can be > >> > produced this way, because this gives you self-adjusting pixels of > >> > arbitrary shape. In the same way it will progressively smooth a > >> hand-drawn > >> > curve, taking curve-fitting to a whole new level. > >> > > >> > I dabbled with this a decade ago, aiming to animate mathematical > models > >> for > >> > educational purposes, and to get pleasing flexible graphics with the > >> least > >> > effort. I was led to it from book cover design, in which SVG has a big > >> part > >> > to play. Here's my fav SVG from Wikipedia showing the technique's > power > >> > (attached). To view the XML contents, edit the .svg (in jqt). To > display > >> > it, drop it onto your web-browser. > >> > > >> > All this reminds me of the illustrators' saying that if it works as a > >> > tattoo, it will work as a Kindle illustration. (Now there's another > >> fund of > >> > clip-art for manageable SVGs: tats!) > >> > > >> > HTML5 is another human-readable format with a lot in common with SVG > (in > >> > principle). But I fancy there are far fewer code-samples available > free > >> on > >> > the web, with an unknowable number of websites actually using it. So > it > >> > looks like I'd have to slog through the manual to get anything done: a > >> > ball-and-chain to creative use. > >> > > >> > But if anyone knows better, and can point me to a fund of free HTML5 > >> > samples, do let me know. I'd like a reason to spend time on HTML5. > >> > Rotatable 3D images would be an inducement – but then I'd certainly > >> want a > >> > library of 3D images to hack. Planes, spaceships, land vehicles, > >> geography: > >> > forget the witchy fantasy figures. > >> > > >> > Ian Clark > >> > > >> > On Wed, 17 Feb 2021 at 23:28, 'robert therriault' via Programming < > >> > programm...@jsoftware.com> wrote: > >> > > >> >> The Jig debug addon is based on SVG and I think that the results look > >> >> pretty good, if I do say so myself. Jig is presented in a webview > >> container > >> >> in jqt. > >> >> > >> >> JHS is very compatible with SVG because it is already browser based. > As > >> >> Ian points out, SVG is compact and readable. > >> >> > >> >> Inkscape is not bad although the SVG's produced are not always > optimal > >> >> (but much quicker to develop than building by hand). > >> >> > >> >> Cheers, bob > >> >> > >> >>> On Feb 17, 2021, at 15:02, Ian Clark <earthspo...@gmail.com> wrote: > >> >>> > >> >>> (IMHO) jgl2 is clunky and hard to debug, as bad as turtle graphics, > >> and > >> >> the > >> >>> results look like "business graphics" from the 1980s. > >> >>> Probably better to use the *plot* addon instead, which is > >> well-integrated > >> >>> with J and has a similar feel to it when you use it at the pd level, > >> but > >> >>> not so clunky and low-level. > >> >>> > >> >>> Don't overlook the humble SVG format (file ext: .svg). It's > supported > >> by > >> >>> all the main browsers, and doesn't need any special add-ons. The > >> results > >> >>> typically look richer and more professional than jgl2 (for the same > >> time > >> >>> spent). > >> >>> Sadly though, it doesn't seem to be supported by > Qt/isidraw/isigraph. > >> >>> It's an XML file format, which means it's human-readable text which > >> can > >> >> be > >> >>> massaged in J as a byte string using rplc. > >> >>> It's not that hard to read and edit by hand, either, and there are > >> plenty > >> >>> of samples on the web to raid. Many of them are surprisingly brief, > >> >>> considering what they do. > >> >>> > >> >>> Suggest you get started with the sample pics in > >> >>> https://en.wikipedia.org/wiki/SVG_animation > >> >>> which lets you build up a recipe book of handy shapes. Alternatively > >> use > >> >>> *Inkscape* (freeware from www.inkscape.org) to generate a prototype > >> >>> picture, and customize it using J to text-process the XML – mostly a > >> >> matter > >> >>> of substituting numerals. You can make respectable animations in > SVG. > >> >>> > >> >>> Ian > >> >>> > >> >>> On Wed, 17 Feb 2021 at 07:10, Raoul Schorer < > raoul.scho...@gmail.com> > >> >> wrote: > >> >>> > >> >>>> There is also graphics/fvj4 with the companion books, depending on > >> what > >> >>>> you're doing. > >> >>>> > >> >>>> Le mer. 17 févr. 2021 à 00:30, bill lam <bbill....@gmail.com> a > >> écrit : > >> >>>> > >> >>>>> there is an addon demos/isigraph. > >> >>>>> and IIRC there is also a lab for it. > >> >>>>> > >> >>>>> On Wed, Feb 17, 2021, 6:49 AM Devon McCormick <devon...@gmail.com > > > >> >>>> wrote: > >> >>>>> > >> >>>>>> Thanks! This is exactly what I was looking for. I vaguely > >> remembered > >> >>>>> the > >> >>>>>> isigraph package but could not find documentation on the > Jsoftware > >> >>>> site. > >> >>>>>> > >> >>>>>> On Tue, Feb 16, 2021 at 5:39 PM Michal Wallace < > >> >>>> michal.wall...@gmail.com > >> >>>>>> > >> >>>>>> wrote: > >> >>>>>> > >> >>>>>>> you can use an isidraw / isigraph component to draw arbitrary > >> lines, > >> >>>>>>> curves, etc. > >> >>>>>>> Here's an example to get you started: > >> >>>>>>> > >> >>>>>>> > >> >>>>>>> > >> >>>>>> > >> >>>>> > >> >>>> > >> >> > >> > https://code.jsoftware.com/wiki/Guides/Window_Driver/Animation/Animated_JGL2 > >> >>>>>>> > >> >>>>>>> and the drawing commands: > >> >>>>>>> > >> >>>>>>> > >> >>>>>> > >> >>>>> > >> >>>> > >> >> > >> > https://code.jsoftware.com/wiki/Guides/Window_Driver/gl2_Command_Reference > >> >>>>>>> > >> >>>>>>> > >> >>>>>>> On Tue, Feb 16, 2021 at 5:21 PM Devon McCormick < > >> devon...@gmail.com> > >> >>>>>>> wrote: > >> >>>>>>> > >> >>>>>>>> Is there anything in J to allow me to draw arbitrary pictures? > >> I'm > >> >>>>>>> looking > >> >>>>>>>> for something that has commands to draw a line and fill a > defined > >> >>>>> area > >> >>>>>>> with > >> >>>>>>>> a color. I have also considered possibly using Jsh and > >> Javascript > >> >>>> or > >> >>>>>>> HTML5 > >> >>>>>>>> but would prefer something where I could work in J and have > basic > >> >>>>>> drawing > >> >>>>>>>> primitives defined. > >> >>>>>>>> > >> >>>>>>>> Thanks, > >> >>>>>>>> > >> >>>>>>>> -- > >> >>>>>>>> > >> >>>>>>>> Devon McCormick, CFA > >> >>>>>>>> > >> >>>>>>>> Quantitative Consultant > >> >>>>>>>> > >> >>>>> > >> ---------------------------------------------------------------------- > >> >>>>>>>> For information about J forums see > >> >>>>> http://www.jsoftware.com/forums.htm > >> >>>>>>>> > >> >>>>>>> > >> >>>> > >> ---------------------------------------------------------------------- > >> >>>>>>> For information about J forums see > >> >>>> http://www.jsoftware.com/forums.htm > >> >>>>>>> > >> >>>>>> > >> >>>>>> > >> >>>>>> -- > >> >>>>>> > >> >>>>>> Devon McCormick, CFA > >> >>>>>> > >> >>>>>> Quantitative Consultant > >> >>>>>> > >> ---------------------------------------------------------------------- > >> >>>>>> For information about J forums see > >> >> http://www.jsoftware.com/forums.htm > >> >>>>>> > >> >>>>> > >> ---------------------------------------------------------------------- > >> >>>>> For information about J forums see > >> http://www.jsoftware.com/forums.htm > >> >>>>> > >> >>>> > >> ---------------------------------------------------------------------- > >> >>>> For information about J forums see > >> http://www.jsoftware.com/forums.htm > >> >>>> > >> >>> > ---------------------------------------------------------------------- > >> >>> For information about J forums see > >> http://www.jsoftware.com/forums.htm > >> >> > >> >> > ---------------------------------------------------------------------- > >> >> For information about J forums see > http://www.jsoftware.com/forums.htm > >> >> > >> > ---------------------------------------------------------------------- > >> > For information about J forums see > http://www.jsoftware.com/forums.htm > >> > > >> > >> -- > >> ---------------------- > >> mail written using NEO > >> neo-layout.org > >> > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA Quantitative Consultant ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
