Sadly, glpaint_jgl2_'' does not change anything. Does it work for you?
(In other words, is this a problem specific to my machine, or my type of machine?) Thanks, -- Raul On Wed, Jan 26, 2022 at 12:04 PM bill lam <bbill....@gmail.com> wrote: > > Try put an glpaint'' after the last gllines... > > Untested > > On Thu, 27 Jan 2022 at 12:59 AM Raul Miller <rauldmil...@gmail.com> wrote: > > > http://www.rosettacode.org/wiki/Fractal_tree#J > > > > I had updated the fractal tree implementation to work with j903. (The > > previous code did not work with any implementation of J which I have > > installed on my mac -- apparently Apple's changes mean that j504 and > > j602 no longer function on this machine.) > > > > However, I noticed that the window is slow to come up, and I cannot resize > > it, > > > > So, I changed the implementation: > > > > require'gl2' > > > > L0=: 50 NB. initial length > > A0=: 1r8p1 NB. initial angle: pi divided by 8 > > dL=: 0.9 NB. shrink factor for length > > dA=: 0.75 NB. shrink factor for angle > > N=: 14 NB. number of branches > > > > L=: L0*dL^1+i.N NB. lengths of line segments > > > > NB. relative angles of successive line segments > > A=: A0*(dA^i.N) +/\@:*("1) _1 ^ #:i.2 ^ N > > > > NB. end points for each line segment > > P=: 0 0+/\@,"2 +.*.inv (L0,0),"2 L,"0"1 A > > > > wd {{)n > > pc P closeok; > > setp wh 480 640; > > cc C isidraw; > > pshow; > > }} > > > > glclear_jgl2_'' > > gllines_jgl2_ <.@(10 + ,/"2 P-"1<./,/P) > > > > But this version does not draw the fractal tree. > > > > Has anyone been able to get gllines to work in an isidraw? > > > > Thanks, > > > > -- > > Raul > > ---------------------------------------------------------------------- > > 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
