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
