All opengl 3.0 api should be supported in jqt, including webgl. I believe most of programs in the opengl programming book can be run but I have no real knowlegde.
Opengl lab is absent, I wish the J community can contribute. I suspect opengl 1.x is no longer taught. On Mar 8, 2015 3:40 PM, "Raul Miller" <rauldmil...@gmail.com> wrote: > In what way(s) is opengl supported? > > For example, I do not see the opengl labs listed jqt's menus. I do see > some files, but for example if I browse to > addons/labs/labs/graphics/opengl.ijt using labs, I get a "Lab > dependency not an addon" message. > > I do see a webgl demo in the qt demos, but the geometry is hardcoded > into ~addons/ide/qt/js/J3DI.js > > I guess I should be able to do the stringreplace thing - but is this > meant to be a stable interface? > > If it is, I guess I could get to work on translating earlier opengl > demos and tutorials and such to the new system, but I guess I'd also > like something of an idea if that's the right approach. > > Thanks, > > -- > Raul > > > > On Sun, Mar 8, 2015 at 1:26 AM, bill lam <bbill....@gmail.com> wrote: > > Jqt supports opengl 2 or newer. > > On Mar 8, 2015 4:50 AM, "Raul Miller" <rauldmil...@gmail.com> wrote: > > > >> For texture mapping, I think you'd need to abandon plot (at least as > >> it is currently written) and move over to opengl. > >> > >> For opengl, you either need to drop back to earlier versions of J (J6 > >> and J7 both had opengl labs - albeit with differences in the details) > >> or you'll need to explore the webgl capabilities inherent in JHS or > >> you'll need to temporarily abandon J while you learn the ropes > >> (perhaps at shadertoy) and then maybe bring your knowledge back into > >> the community. > >> > >> References: > >> > >> http://www.jsoftware.com/jwiki/OpenGL > >> > >> > >> http://webglplayground.net/documentation > >> > >> https://www.shadertoy.com/results?query=tag%3Dtexture > >> > >> Or, if you are less inclined towards experimentation and prefer some > >> heavy reading: > >> > >> https://www.cse.msu.edu/~cse872/tutorial4.html > >> > >> https://www.opengl.org/archives/resources/faq/technical/texture.htm > >> > >> http://www.glprogramming.com/red/chapter09.html > >> > >> ... > >> > >> Beware though that the opengl standards have drifted over the years > >> and there will be subtle gotchas where some older things no longer > >> work and some newer things don't quite work exactly like they are > >> described to work. > >> > >> What usually works for me is some time spent finding out what the > >> puzzling terms mean, and then some blind experiments based on some > >> working example - go back and forth on that enough and mix in some > >> attempts to create things from scratch (which helps identify blind > >> spots). But I also like to stay close to working examples, as much as > >> I can, to avoid too much time lost on blind alleys (where someone with > >> more self importance than practical sense says something which sounds > >> plausible but which is totally unrelated to what you want to be > >> doing). > >> > >> Thanks, > >> > >> -- > >> Raul > >> > >> On Sat, Mar 7, 2015 at 3:10 PM, Skip Cave <s...@caveconsulting.com> > wrote: > >> > My next challenge is to map a texture (rectangular .jpg image) onto > that > >> > ellipse and plane. Any hints as to how to do that? > >> > > >> > Skip Cave > >> > Cave Consulting LLC > >> > > >> > On Sat, Mar 7, 2015 at 1:35 PM, Skip Cave <s...@caveconsulting.com> > >> wrote: > >> > > >> >> Raul, Thanks for the links! That's what I needed. I didn't think > about > >> >> looking in the Studio Labs for the Plot documentation. The final > secret > >> is > >> >> to throw away the imaginary parts of the ellipse equation so all z > >> outside > >> >> the ellipse is zero: > >> >> > >> >> a =.1 > >> >> > >> >> b=. 1.7 > >> >> > >> >> c =. 1.5 > >> >> > >> >> x =. 5 %~21 21 $ i:10 > >> >> > >> >> y =. |: x > >> >> > >> >> z =. {. |: +. c * ((1 - ((x^2)%(a^2)) + ((y^2)%(b^2))))^0.5 > >> >> > >> >> 'surface' plot z > >> >> > >> >> > >> >> Here's the plot: http://bit.ly/1GbYuy1 > >> >> > >> >> > >> >> The axes should be 1, 1,7 and 1.5, but they are not, so I need to > look > >> at > >> >> that. > >> >> > >> >> > >> >> Skip > >> >> > >> > ---------------------------------------------------------------------- > >> > 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
