>And finally, there are some undocumented dither params you might
>want to handle (from the engineer who did the imaging work):
Thanx Roy, and WOW. they work indeed even better with custom
palettes... ever tried using grayscale palette with dither set
true....?
here is the second version of the SetMemberDepth handler, now with
support for palette, dither and all other built-in copyPixels options:
------ ver 1.0 Yariv Alter Fin / Marcel van der Drift ------
on SetMemberDepth mem,dep,opts
if opts.ilk=#integer then opts=[#dither:opts]
if opts.ilk=#proplist then pal=symbol(getaprop(opts,#palette))
else pal=symbol(opts)
targ=image(mem.width,mem.height,dep,pal)
targ.copyPixels(mem.image,mem.rect,mem.rect,opts)
mem.image=targ
return targ
end
------ www.nobodyHere.com / www.alterFin.com ------
opts can be a proplist with palette/dither/bgcolor and such, a string
or symbol for the palette or an integer for the dither code:
SetMemberDepth member("myMem"),2
SetMemberDepth member("theirMem"),4,"Grayscale"
SetMemberDepth
member("yourMem"),8,[#bgcolor:rgb(255,0,0),#dither:true,#palette:"rainbow"]
img=SetMemberDepth member("roysMem"),16,1215...
sending strange values for the object palette or copy options does
not seems to cause any problems.
the handler is now also a function returning the new image object.
this might speed up further operations with the object, yet beware:
"This operation cannot be undone."
btw, anyone prepared for writing a loop to run with the dither value
of a copyPixels command from 1 to the maxinteger, getting pixel
changes in sample areas and returning some more of these secret
'dither eggs' ....?
thanks again Roy,
enjoy all,
Yariv Alter Fin / Marcel van der Drift
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