OK, I'm such a noob here, that I'm not quite sure how to ask my question...
I have a "dwell file" -an array of values generated by a Mandelbrot Set
application, one per pixel, with arbitrary values between 1 and
xxxxxxxxxxx (currently less than 2 billion, and right now far less than
1,000,000)- and I would like to use them, suitably tweaked, as indices
into a ColorMap. The ColorMap need not have 1,000,000 entries. No-one
can see that many color differences in a Mandelbrot set anyway.
I can generate an array of Color (ColorArray?) but I'm not sure how to
use them to create the ColorMap, and I'm not sure how to use the
ColorMap to speedily change what is drawn in the first place.
Right now, I'm creating a color dictionary and drawing via:
1 to: 800 do: [:y|
1 to: 800 do: [:x| |i|
i := x+ ((y-1) *800). aForm colorAt: x@y put:( myDictColors
at: (myArray at: i )).]
].
where myDictColors is a dictionary whose keys are the dwells listed in
the dwell array file and whose values are Color objects from my array of
colors.
Drawing the above takes about 1.5 seconds, which is a bit slow. I'd like
realtime-ish updating as I play with colors in the palette. Can this be
done, at least up to the 4096 color limit that BitBlt has for ColorMaps?
If so, how? I've been trying to figure out the various classes and I'm
stumped.
Thanks
--
Squeak from the very start (introduction to Squeak and Pharo Smalltalk for the (almost) complete and compleate beginner).
https://www.youtube.com/playlist?list=PL6601A198DF14788D&feature=view_all_______________________________________________
Beginners mailing list
[hidden email]
http://lists.squeakfoundation.org/mailman/listinfo/beginners
Locked
