jccf@ihlpg.UUCP (01/26/87)
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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