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Rotate palette

Submitted by Aenima on Tue, 2008-11-18 22:48.

Is it possible to rotate the palette of a flame during animation using flam3-animate? If not, would that be a feature you'd consider adding? I think it could add an interesting dimension when the palette doesn't have too many colors.

Also, spot mentioned a while ago in another thread that add'l animation options were being considered. Any news to report on that front?

As always, thanks for all your collective efforts.

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I don't think palette

Submitted by macbony on Fri, 2008-11-28 15:38.

I don't think palette rotation would be possible unless you used 256 frames - how do you determine the color of index 0.5 when 0 is a bright red and 1 is a bright green?

An interesting method of doing colors on animations could be by cycling the color value of the xforms rather than touching the palette. Here'a small loop with that employed: https://dl.getdropbox.com/u/82350/2008-11-12.avi

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Ralf Fliker has this lua

Submitted by macbony on Mon, 2008-12-01 13:47.

Ralf Fliker has this lua function for use with oxy to rotate a cmap:


-- Color map rotator
function cmap_rot (new_genome,old_cmap,ang)
new_cmap = {}
for i=0,255 do
if ang>=0 then new_ind = math.mod(i+ang,256)
else new_ind = math.mod(256+math.mod(i+ang,256),256) end
x0 = math.floor(new_ind)
x1 = math.mod(x0+1,256)

y0 = old_cmap[x0+1].red
y1 = old_cmap[x1+1].red
new_red = lint(x0,x0+1,y0,y1,new_ind)

y0 = old_cmap[x0+1].green
y1 = old_cmap[x1+1].green
new_green = lint(x0,x0+1,y0,y1,new_ind)

y0 = old_cmap[x0+1].blue
y1 = old_cmap[x1+1].blue
new_blue = lint(x0,x0+1,y0,y1,new_ind)

new_cmap[i+1] = { index = old_cmap[i+1].index,
red = round(new_red),
blue = round(new_blue),
green = round(new_green)}
end
new_genome.colors = new_cmap
end

You could try something like that in Apo. He has a good tutorial up here: http://rampant-mac.com/wp/?p=419

Oxy's easier to script for than Apo as it uses a real scripting language (and a good one at that, Lua rocks) but requires a Mac.

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