This is still the most convincing argument for changing RGB to GrB. The values from dark to light are correct.
Linda -----Original Message----- From: programming-boun...@forums.jsoftware.com [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Linda Alvord Sent: Wednesday, July 29, 2015 1:35 AM To: programm...@jsoftware.com Subject: Re: [Jprogramming] Trouble making patter for a color cube Here's what I got from your first cube patern using colors. 12 9$256 256 256 #."1 colors 0 0 0 0 0 16711680 16711743 16711807 16711871 16711935 0 0 0 0 0 0 0 0 0 0 12517376 12517439 12517503 12517567 12517631 0 0 0 0 0 0 0 0 0 0 8323072 8323135 8323199 8323263 8323327 0 0 0 0 0 0 0 0 0 0 4128768 4128831 4128895 4128959 4129023 0 0 0 0 0 0 0 0 0 0 0 63 127 191 255 0 0 0 0 0 16711680 12517376 8323072 4128768 0 0 63 127 191 255 255 4129023 8323327 12517631 16711935 16727808 12533504 8339200 4144896 16128 16128 16191 16255 16319 16383 16383 4145151 8339455 12533759 16728063 16744192 12549888 8355584 The top portion of the image is all very dark, but there are some very large numbers in the top portion of the data. The first column (red) is the more valuable than the second column (green) so the pattern does not preserve value (light and dark) Linda -----Original Message----- From: programming-boun...@forums.jsoftware.com [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul Miller Sent: Tuesday, July 28, 2015 11:17 PM To: Programming forum <programm...@jsoftware.com> Subject: Re: [Jprogramming] Trouble making patter for a color cube White will be the biggest number. -- Raul On Tue, Jul 28, 2015 at 10:12 PM, Linda Alvord <lindaalv...@verizon.net> wrote: > Raul, After using this code with cube 3 try this. > > 12 9$256 256 256 #."1 paint > 0 0 0 16711935 16711807 16711680 0 0 0 > 0 0 0 16744447 16744319 16744192 0 0 0 > 0 0 0 16777215 16777087 16776960 0 0 0 > 16711935 16744447 16777215 16777215 16777087 16776960 0 0 0 > 8323327 8355839 8388607 8388607 8388479 8388352 0 0 0 > 255 32767 65535 65535 65407 65280 0 0 0 > 0 0 0 65535 65407 65280 65280 8388352 16776960 > 0 0 0 32767 32639 32512 32512 8355584 16744192 > 0 0 0 255 127 0 0 8323072 16711680 > 0 0 0 255 127 0 0 0 0 > 0 0 0 8323327 8323199 8323072 0 0 0 > 0 0 0 16711935 16711807 16711680 0 0 0 > > When I interchange rgb for grb I can tell where the biggest numbers in a > viewmat are. Can you using rgb? All I have done here is take each color > triple in thecube pattern viewmat and converted it to its :real countsing > number in the 256^3 position in the more than 16 million numbers. The white > area can be spoted pretty easily. > > Linda > > -----Original Message----- > From: programming-boun...@forums.jsoftware.com > [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul Miller > Sent: Tuesday, July 28, 2015 4:12 PM > To: Programming forum <programm...@jsoftware.com> > Subject: Re: [Jprogramming] Trouble making patter for a color cube > > I think this is what you are asking for: > > load 'viewmat' > > 'E B G C R M Y W'=:#:i.8 > V=:<E;E;E > FRONT=:<M;R;W > LEFT=:<M;W;B > TOP=:<W;Y;C > BACK=:<C;G;B > RIGHT=:<G;Y;E > BASE=:<B;E;M > > face=: 4 :0 > 'O X Y'=.y > brush=.D=: <.255*O+"1](%x-1)*((i.x)*/Y-"1 O)+"1/(i.x)*/X-"1 O > ) > > cube=: 3 :0 > plan=: 4 3$V,FRONT,V,LEFT,TOP,V,V,BACK,RIGHT,V,BASE,V > paint=:,/,/>,"_1 each/"1 C=:y face each plan > paint viewmat i.4 3*y > ) > > cube 5 > > Personally, I prefer ('rgb' viewmat image), but your approach can certainly > be made to work. > > Thanks, > > -- > Raul > > > On Tue, Jul 28, 2015 at 3:25 PM, Linda Alvord <lindaalv...@verizon.net> > wrote: >> Here's how far I got translating it to Raul's method. I can't generalize > to >> nxn squares. >> >> load 'viewmat' >> >> 'E B G C R M Y W'=:#:i.8 >> V=:<E;E;E >> FRONT=:<M;R;W >> LEFT=:<M;W;B >> TOP=:<W;Y;C >> BACK=:<C;G;B >> RIGHT=:<G;Y;E >> BASE=:<B;E;M >> >> face=: 3 :0 >> 'O X Y'=.y >> brush=.D=: <.255*O+"1]0.5*((i.3)*/Y-"1 O)+"1/(i.3)*/X-"1 O >> ) >> >> cube=: 3 :0 >> plan=:4 3$V,FRONT,V,LEFT,TOP,V,V,BACK,RIGHT,V,BASE,V >> paint=:,/,/>,"_1 each/"1 C=:face each plan >> paint viewmat i.12 9 >> ) >> >> cube '' >> >> Linda >> >> -----Original Message----- >> From: programming-boun...@forums.jsoftware.com >> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Linda > Alvord >> Sent: Tuesday, July 28, 2015 3:05 PM >> To: programm...@jsoftware.com >> Subject: Re: [Jprogramming] Trouble making patter for a color cube >> >> Here's my latest which folds so the base has blue riht, red forward and >> green up. Then the upper right front corner is white. >> >> load 'viewmat' >> ColorCube=: 3 : 0 >> N=:y >> G=:<.(i.N)*255%<: N >> A=:#:i.8 >> B=:(((<:N)#0),G),.G,(<:N)#255 >> BIGBOX=:<"2(|."2)1 0 2{"1(|:"2)(8 3 ,<:2*N)$,|:(,A){"1 B 'BLACK BLUE RED >> MAGENTA GREEN CYAN YELLOW WHITE'=:>BIGBOX >> LYELLOW=:(i.N){"2 YELLOW >> LCYAN=:(i.N){"2 CYAN >> LMAGENTA=:(i.N){"2 MAGENTA >> GREEN=:((<:N)+i.N){"2 GREEN >> RED=:((<:N)+i.N){"2 RED >> BLUE=:((<:N)+i.N){"2 BLUE >> BACK=:((*:N), 3)$,LMAGENTA<."1/LYELLOW >> TOP=:((*:N), 3)$,LCYAN<."1/LYELLOW >> LEFT=:((*:N), 3)$,LMAGENTA<."1/LCYAN >> FRONT=:((*:N), 3)$,GREEN+"1/BLUE >> RIGHT=:((*:N), 3)$,GREEN+"1/RED >> BASE=:((*:N), 3)$,RED+"1/BLUE >> F=:i.2#N >> T=:(<:6*N^2),((<:N),N)$0 >> L=:|:T >> R=:|:|.T >> WOW1=:(R,.(|.F),.L),((|:|.(N^2)+F),.((2*N^2)+F),.|.T) >> >> WOW2=:WOW1,(T,.((3*N^2)+F),.|:|.|:(4*N^2)+F) >> WOW3=:WOW2,(R,.(|.(5*N^2)+F),.L),"2,N(#"0) 0, (6*N^2), 0 >> ALL=:BACK,LEFT,TOP,FRONT,RIGHT,BASE(,"2)0 0 0 ALL viewmat WOW3;'Color > Cube' >> ) >> >> ColorCube 30 >> >> I think only one line wrapped. Another email follows With Raul's style >> which I can't generalize to nxn squares. >> >> Linda >> -----Original Message----- >> From: programming-boun...@forums.jsoftware.com >> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of David > Lambert >> Sent: Tuesday, July 28, 2015 1:09 PM >> To: programming <programm...@jsoftware.com> >> Subject: Re: [Jprogramming] Trouble making patter for a color cube >> >> This delightful color cube! I rotated one of the arms so the pattern > won't >> look like a cross, which is beside the point. >> >> Has anyone yet virtually folded the image for display in perspective on >> opengl? I need a color chooser and this looks more fun than a flat > display. >> With 5% probability I'll undertake the task but as it happens my >> understanding of homogeneous coordinates doesn't translate directly to >> "knowing how to use opengl". >> >> boxdraw_j_ 1 >> >> 4 3$<' ' NB. with simple editing, fixed width font please >> +--+ >> | | >> +--+--+ >> | | | >> +--+--+--+ >> | | | >> +--+--+ >> | | >> +--+ >> >> ---------------------------------------------------------------------- >> 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
