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)$0
L=:|:T
R=:|:|.T
WOW1=:(R,.(|.F),.L),((|:|.(N^2)+F),.((2*N^2)+F),.|.T)
WOW2=:WOW1,(T,.((3*N^2)+F),.|:|.|:(4*N^2)+F)
WOW3=:WOW2,(R,.(|.(5*N^2)+F),.L),"2,N(#"0) 0, (6*N^2), 0
ALL=:BACK,LEFT,TOP,FRONT,RIGHT,BASE(,"2)0 0 0
ALL viewmat WOW3;'Color Cube'
)
ColorCube 30
I think only one line wrapped. Another email follows
With Raul's style which I can't generalize to nxn squares.
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of David Lambert
Sent: Tuesday, July 28, 2015 1:09 PM
To: programming <[email protected]>
Subject: Re: [Jprogramming] Trouble making patter for a color cube
This delightful color cube! I rotated one of the arms so the pattern won't
look like a cross, which is beside the point.
Has anyone yet virtually folded the image for display in perspective on
opengl? I need a color chooser and this looks more fun than a flat display.
With 5% probability I'll undertake the task but as it happens my
understanding of homogeneous coordinates doesn't translate directly to
"knowing how to use opengl".
boxdraw_j_ 1
4 3$<' ' NB. with simple editing, fixed width font please
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