🚀 go-pugleaf

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At the moment I am writing an application for plotting complex functions on
the mac screen. (Mandelbrot functions, 320x320 pixels, language is Megamax C).
Two problems I ran in at the moment;

1) How to plot a single pixel. I couldn't find a routine in IM like 
      plotpixel(h,v);
   and the current sollution
      moveto(h,v);
      lineto(h,v);
   ( pensize = 1,1 ) is too timeconsuming.

2) How to save the bit image in a clean fast way, since a rect (in which I am 
   drawing) only consist of 4 integers specifying the boundaries of the 
   rectangle.
   Also related to this problem, how do I update the window or rect after 
   another window (e.g. a DA) has been writen over the figure, and then
   this frontmost window is closed, so the figure has to reapear again.
   I have seen there's a routine teupdate(), but is the also something like
   grafupdate() or rectupdate().


e-mail or post any help,
Thanks in advance.

Piter Jonker, Hilversum, Holland

ihnp4!ihlpg!hvlpa!pjonker