Yes, exactly. -- Raul
On Sat, Feb 22, 2014 at 11:08 AM, bill lam <bbill....@gmail.com> wrote: > Old OpengGL (1.x) is still supported on J8 if viedo card OpenGL driver > is opengl 1.x or it provides compatibility profile. Some minor code > modification is needed, please see jwiki and various opengl demos in > qt demo and wd demo. OTOH webgl must use shader language IIRC. > > > Сб, 22 фев 2014, Raul Miller писал(а): >> Talking about issues (as opposed to coding itself) probably belongs in chat >> forum, not programming. >> >> We should try to make sure that programming forum messages always includes >> some J expressions. >> >> And not just "sarcastic" expressions like =i.9 >> >> Ideally, in programming forum, we should also try to invite people to be >> responding with code. >> >> I think we can tolerate minor deviations from this rule, but I think we >> should also get in the habit of moving topics between forums as >> appropriate. And (as a courtesy, since not everyone will want to subscribe >> to all forums) I think we should often make the effort to Cc the person we >> are responding to. >> >> That said, note that wd exists in j8. It has not been abandoned. The J8 >> version could use some more work - there are wd commands that worked in J6 >> which no longer make sense, and we need to do something to help people >> trying J6 code on J8, so they have a way forward. >> >> My ideal would be that we could do complete backwards compatibility in user >> space (some addon script). It's not just wd though, that has changed from >> J6 to J8. Consider, for example, this entry from >> http://rosettacode.org/wiki/OpenGL#J >> >> coclass 'example' >> >> (coinsert[require) 'jzopengl' >> >> >> >> create=:3 :0 >> >> ogl=: ''conew'jzopengl' >> >> wd 'pc p;cc c isigraph opengl rightmove bottommove;pas 0 0;pshow;' >> >> ) >> >> >> >> p_close=: destroy=:3 :0 >> >> destroy__ogl'' >> >> wd'pclose' >> >> codestroy'' >> >> ) >> >> >> >> corner=:4 :0 >> >> glColor3d x >> >> glVertex2d y >> >> ) >> >> >> >> p_c_paint=:3 :0 >> >> rc__ogl'' >> >> glClear GL_COLOR_BUFFER_BIT >> >> glBegin GL_TRIANGLES >> >> 1 0 0 corner 0 0-0.5 >> >> 0 1 0 corner 1 0-0.5 >> >> 0 0 1 corner 0 1-0.5 >> >> glEnd'' >> >> show__ogl'' >> >> ) >> >> >> >> conew~'example' >> >> >> That works fine, for me, in J6 (though on windows 64 I had to work around a >> problem where windows does not have a "64 bit" opengl implementation and >> J64 needs to use the "32 bit" implementation). >> >> >> It fails in J8 because the require statement does not work. >> >> >> I (or someone) should probably go back in and do a j8 jqt version and a j8 >> jhs (webgl) version. >> >> >> But rosettacode is offline right now. I do not know if they are being >> subjected to a denial of service attack from the internet or if it's a >> funding issue or if they are about to shut down. Experience suggests that >> whatever problem currently being experienced there is temporary. But anyone >> who deals with computers knows that it's important to have backups because >> we will have occasional catastrophic failures. Redundancy is important and >> a necessary aspect of technological advance. >> >> >> Thanks, >> >> >> -- >> >> Raul >> >> >> >> >> >> >> On Sat, Feb 22, 2014 at 8:47 AM, Björn Helgason <gos...@gmail.com> wrote: >> >> > One of the issues I have with J recent years is dropping the excelent wd >> > from J6. >> > >> > I loved how easy it was to create screens etc. >> > >> > Dropping it for an uncertain future was a really bold move. >> > >> > I did not like it much but went with the flow. >> > >> > I do like JHS and all the new things it brings. >> > >> > Now the new JQT seems to give us wd back and better if anything. >> > >> > If you want to get people interested in J in 5 minutes it is by showing >> > some of the plot demos and show how easy the definitions are to use with >> > your code and also how easy it is to create guis to your apps with wd >> > commands. >> > >> > Working with data is fine. >> > >> > Being able to work with them and present them easy is great. >> > >> > Grid and plots mixed with wd is brilliant. >> > >> > Showing helps, demos and labs in 5 minutes gives good ideas. >> > >> > - >> > Björn Helgason >> > gsm:6985532 >> > skype:gosiminn >> > On 22.2.2014 13:26, "Don Guinn" <dongu...@gmail.com> wrote: >> > >> > > There are so many "what ifs" in investing, managing a home and family. At >> > > least J makes it a lot easier to try different strategies. >> > > >> > > >> > > On Sat, Feb 22, 2014 at 12:08 AM, Björn Helgason <gos...@gmail.com> >> > wrote: >> > > >> > > > Talking about present value or getting a promise of something in the >> > > > future. >> > > > >> > > > It is not just interest rate but also inflation you need to think >> > about. >> > > > >> > > > Not to mention broken promises and not paying back in the future. >> > > > >> > > > Bring in the value of a hamburger now or in the future or a painting or >> > > > gold. >> > > > >> > > > It sure gets more complex. >> > > > >> > > > What about getting a hamburger now and keeping it for a few years? >> > > > >> > > > It is always difficult to get people interested in something >> > > > >> > > > I saw a short demo recently of how to get the bones out of a chicken >> > > with a >> > > > minimum damage to the skin. >> > > > >> > > > It is pretty easy now that I know how to do it and I have done it a few >> > > > times. >> > > > >> > > > I am wondering why I did not start doing it years ago. >> > > > >> > > > - >> > > > Björn Helgason >> > > > gsm:6985532 >> > > > skype:gosiminn >> > > > On 22.2.2014 01:42, "Don Guinn" <dongu...@gmail.com> wrote: >> > > > >> > > > > Years ago I was in a class where the day's topic was the present >> > value >> > > > and >> > > > > future value of money. The teacher asked for a volunteer. As you >> > know, >> > > > kids >> > > > > are reluctant to volunteer. He finally got a volunteer. The student >> > > came >> > > > > up, he gave the student a dollar and said thanks for volunteering and >> > > he >> > > > > could sit back down. Then he asked for another volunteer. Now lots of >> > > > > volunteers. He picked one. He gave the student a business card which >> > he >> > > > > wrote on the back that he could redeem it for a dollar one year from >> > > that >> > > > > date. The student sat back down. >> > > > > >> > > > > Then the instructor asked the first volunteer if he wanted to trade, >> > > > which >> > > > > he didn't. The instructor asked him "Why not trade? They're both >> > worth >> > > a >> > > > > dollar. Well, how much would you charge to trade?" Needless to say, >> > the >> > > > > following discussion made the differences between present value and >> > > > future >> > > > > value and risks in future investments become crystal clear. And he >> > > never >> > > > > had to resort to any arithmetic. >> > > > > >> > > > > That really taught me the importance of present value of investments >> > > that >> > > > > mature in the future. So I think of for example, a dollar three years >> > > > from >> > > > > now is only worth a little over $0.86 today at 5% interest. A >> > different >> > > > way >> > > > > to look at it, but easier to explain to kids. >> > > > > >> > > > > I had that business card stuck on my bulletin board in my office for >> > > > years. >> > > > > Don't know what ever happened to it. >> > > > > >> > > > > >> > ---------------------------------------------------------------------- >> > > > > 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 > > -- > regards, > ==================================================== > GPG key 1024D/4434BAB3 2008-08-24 > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
