Randomize color

[Dan Ebberts]

This should work:

seedRandom(index,true);
random([1,1,1,1])

Dan

[Jason Jantzen]

This is great, Dan. Is there a way to keep the random seed range within a color hue?

Jason Jantzen
vimeo.com/jasonj

[Dan Ebberts]

You can limit the range by passing two arrays to random. For example, this will give you different variations of red:

seedRandom(index,true);
random([.25,0,0,1],[1,0,0,1])

Dan

[Jason Jantzen]

ok, this is pretty awesome 🙂 I’m trying to understand the color system though. Are those 32 bit values?

Jason Jantzen
vimeo.com/jasonj

[Dan Ebberts]

They’re floating point, with individual channel values between 0.0 and 1.0.

Dan

[Daniel Sánchez de miguel]

would there be a way to call for say, four specific colors? then have it so, each time you duplicate the solid it creates another one with one of the 4 defined colors?

Also, to define such colors in floating point mode… would I have to divide RGBA values by 255 in order to get the floating point color values?

Thanks,
Dani

[Dan Ebberts]

This should give you the idea:

color0 = [255,0,0,255]/255; // red
color1 = [0,255,0,255]/255; // green
color2 = [0,0,255,255]/255; // blue
color3 = [255,255,0,255]/255; // yellow

colors = [color0,color1,color2,color3];
seedRandom(index,true);
colors[Math.floor(random(colors.length))];

Dan

[Daniel Sánchez de miguel]

Thank you Dan,

That worked beautifully.