Alternatively, run the tight event loop using jconsole. On Sun, Nov 29, 2020, 9:59 AM Raul Miller <rauldmil...@gmail.com> wrote:
> Rather than an explicit polling loop, I would recommend using the > sys_timer mechanism -- > https://code.jsoftware.com/wiki/Guides/Window_Driver/Command_Reference > > -- > Raul > > On Sat, Nov 28, 2020 at 8:52 PM Thomas McGuire <tmcguir...@gmail.com> > wrote: > > > > Have you come up with a way to handle SDL events? > > > > I was able to read events but if I set up a polling loop I ran into > problems with J not getting time for handling > > Its own user events. I made some attempts to use wd ‘msgs’ from the > window driver but was unsuccessful. > > > > Tom McGuire > > > > > On Nov 27, 2020, at 1:36 PM, emacstheviking <obji...@gmail.com> wrote: > > > > > > that took a few seconds to sink in but..yes, I see now. > > > > > > On Fri, 27 Nov 2020 at 16:46, bill lam <bbill....@gmail.com> wrote: > > > > > >> Well done! > > >> > > >> Sometimes I found it easier to read if negative index are used, > > >> > > >> 'rw rh' =. _2 _1 dmva sdl_getrenderoutputsize appr;(_1);(_1) > > >> > > >> On Sat, Nov 28, 2020, 12:19 AM emacstheviking <obji...@gmail.com> > wrote: > > >> > > >>> Final more J-like solution to my problem, thanks bill Iam for the > > >> nudge... > > >>> > > >>> dmva =: 4 : '''''&$ each (x{y)' > > >>> > > >>> This allows me to specify the actual array positions I want > de-arrayed / > > >>> scalerised and feels much more natural in use as I can now specify > any > > >>> number of positions and of course re-order things too. Probably the > only > > >>> improvement now is the name! > > >>> > > >>> 'rw rh' =. 2 3 dmva sdl_getrenderoutputsize appr;(_1);(_1) > > >>> > > >>> I appreciate that ''$ is only producing scales because the first > atom of > > >> my > > >>> array contains a scalar. I think. ! > > >>> Thanks all once again, > > >>> Sean. > > >>> > > >>> > > >>> On Fri, 27 Nov 2020 at 13:05, bill lam <bbill....@gmail.com> wrote: > > >>> > > >>>> probably your width and height are not scalar but singleton array. > you > > >>> can > > >>>> check them with monad $ . > > >>>> > > >>>> On Fri, Nov 27, 2020, 8:00 PM emacstheviking <obji...@gmail.com> > > >> wrote: > > >>>> > > >>>>> Given these working external function declarations: > > >>>>> > > >>>>> SDL_GetWindowSize n x *i *i > > >>>>> SDL_GetRendererOutputSize n x *i *i > > >>>>> SDL_CreateRGBSurface > x i i i i i i i i > > >>>>> > > >>>>> then these two calls: > > >>>>> > > >>>>> 'ww wh'=:2}.sdl_getwindowsize appw;(,_1);(,_1) > > >>>>> 'rw rh'=:2}.sdl_getrendereroutputsize appr;(,_1);(,_1) > > >>>>> > > >>>>> work and produce values of 1024 for ww and rw, and 768 for wh and > rh > > >>>>> respectively, as expected. > > >>>>> However, when creating the rgb surface it raises a domain error > and I > > >>>> have > > >>>>> been tearing my hair out to understand why. > > >>>>> I have posted the full code at the end of this plea for help and > > >>>>> enlightenment. > > >>>>> > > >>>>> args=.0;width;height;32;16bff0000;16bff00;16bff;16bff000000 > > >>>>> smoutput args > > >>>>> sfc=: sdl_creatergbsurface args > > >>>>> > > >>>>> cder'' > > >>>>> 6 1 > > >>>>> > > >>>>> yet calling it with literals or even the extracted 'y' value (a > boxed > > >>>>> dimension): > > >>>>> args=.0;1024;768;32;16bff0000;16bff00;16bff;16bff000000. NB. works > > >>>>> args=.0;width;height;32;16bff0000;16bff00;16bff;16bff000000. NB. > > >> works > > >>>>> > > >>>>> I have used 3!:0 to examine the type, it is 4 (integer) in all > cases > > >>>>> (ww,wh,rw,rh,width,height), ruling out those errors. > > >>>>> Thanks, > > >>>>> Sean. :| > > >>>>> > > >>>>> -- full code --- > > >>>>> > > >>>>> ugo =: 3 : 0 > > >>>>> NB. testing out domain errors around sdl_creatergbsurface... > > >>>>> args =. SCREEN_X_MAX;SCREEN_Y_MAX > > >>>>> scrw =. SCREEN_X_MAX > > >>>>> scrh =. SCREEN_Y_MAX > > >>>>> sdlprep scrw;scrh > > >>>>> cairoprep'' > > >>>>> urun'' > > >>>>> uend^:y '' > > >>>>> ) > > >>>>> > > >>>>> sdlprep =: 3 : 0 > > >>>>> 'width height'=. y > > >>>>> sdl_init SDL_INIT_EVERYTHING > > >>>>> appw=:sdl_createwindow 'test window';0;0 > > >>>>> ;width;height;SDL_WINDOW_SHOWN+SDL_WINDOW_ALLOW_HIGHDPI > > >>>>> appr=:sdl_createrenderer appw;_1 > > >>>>> ;SDL_RENDERER_ACCELERATED+SDL_RENDERER_PRESENTVSYNC > > >>>>> 'ww wh'=:2}.sdl_getwindowsize appw;(,_1);(,_1) > > >>>>> 'rw rh'=:2}.sdl_getrendereroutputsize appr;(,_1);(,_1) > > >>>>> cxm=: rw % ww > > >>>>> cym=: rh % wh > > >>>>> smoutput 'window: ', (":appw), 'renderer:', (":appr) > > >>>>> smoutput 'requested width:',(":width),' height:',(":height) > > >>>>> smoutput 'render width: ',(":rw),' height:',(":rh) > > >>>>> smoutput 'window width: ',(":ww),' height:',(":wh) > > >>>>> smoutput 'x/y multipliers:',(":cxm),'/',(":cym) > > >>>>> NB. This needs to be endian-aware at some point > > >>>>> smoutput (": (width = rw)) > > >>>>> args=.0;width;height;32;16bff0000;16bff00;16bff;16bff000000 > > >>>>> smoutput args > > >>>>> sfc=: sdl_creatergbsurface args > > >>>>> NB. Practice structures. PACKING!!! Show printable format name > > >>>>> pFormat=._3 ic memr (sfc+8),0,8 NB. sdl_surface->format > > >>>>> format=._2 ic memr pFormat,0,4 NB. sdl_surface->format->format > > >>>>> smoutput 'pixel format:',(psz sdl_getpixelformatname format) > > >>>>> EMPTY > > >>>>> ) > > >>>>> > > >> ---------------------------------------------------------------------- > > >>>>> 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 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
