-
Question regarding randomSeed()
As I understand it, having a seed as a constant, like randomSeed(3), should generate the same set of random numbers. However, I’ve put this expression into a shape layer’s position and duplicated it, and it creates two shapes that randomly jump around, but not in unison with eachother:
seedRandom(3,false);
x = random(-10,10);
Y = random(-10,10);
[x,y];Because both shapes have the seed being set to 3, shouldn’t they have the same set of random values? Is there something I’m missing?
-
3 Replies
-
Behind the scenes, the layer ID somehow gets factored into the seed, so each layer exhibits different random behavior.
Dan
-
Hi Dan, thanks for the response. So does that mean that putting any value into randomSeed() is pretty much pointless then, whether it’s a numerical value or ‘index’?
-
It does affect the random sequence for that layer.
If you need to correlate the random behavior of multiple layers, you can sometimes do it by doing the random calculation in a single expression in a central location (slider, point control, text layer, etc.) and “publishing” the result for the randomized layers. The specifics would depend on what you’re trying to do exactly.
Dan
Reply to this Discussion! Login or Sign Up