Comments on: 3D Perlin noise in Flash

By: Papervision3D clouded planet Earth tutorial and source « Benny’s Blog

Papervision3D clouded planet Earth tutorial and source « Benny’s Blog — Fri, 19 Jun 2009 17:14:10 +0000

[...] the runtime visibility map I’ve used the ever amazing perlin noise effect. Since perlin noise works with a phase I can use that to animate perlin noise and apply the results [...]

By: Flash on the Beach and some Perlin Noise | kelvinluck.com

Flash on the Beach and some Perlin Noise | kelvinluck.com — Wed, 05 Nov 2008 22:15:51 +0000

[...] got interested by Robert’s mention of perlin noise. Seb Lee-Delisle posted on Sunday about 3D Perlin Noise in Flash – it looks like a really interesting way to take this further. I can’t wait to see what [...]

By: Stu

Stu — Wed, 30 Jul 2008 01:54:51 +0000

Looks like a couple of people have optimized the AS perlin noise (check the comments on the original page)

By: seb

seb — Sun, 13 Jan 2008 20:39:23 +0000

hey Eric, yeah any noise algorithm that requires a blur filter kinda defeats the object! In fact that’s one of Ken Perlin’s main motivations was to avoid the need for CPU expensive blurring. So very glad I could help

cheers

Seb

By: eyefisher

eyefisher — Fri, 11 Jan 2008 20:21:24 +0000

Hey Seb,

I had the same question as Evan. I solved it the same way, but used a blur filter over a container. Turning on smoothing makes a lot more sense. Why do I always overcomplicate things.

Thanks Seb… AND RON… for the inspiration! This is just beautiful and I can’t wait to see other implementations of this!

Eric Bowers

By: seb

seb — Mon, 07 Jan 2008 23:49:27 +0000

Hey Evan!

2, suggestions for you to try :

1. Make sure your bitmap is REALLY small, I think mine is actually only about 100-200 pixels wide, and then blown up with smoothing on.

2. Make sure the z-steps are REALLY small! I can’t remember how much I’m changing every frame but I think it’s only around 0.1 or 0.01.

Oh and also maybe I’ll post the code sooner or later!?

cheers

Seb

By: Evan

Evan — Wed, 02 Jan 2008 20:52:18 +0000

Hi Seb,

Your 3D Perlin noise example is just breathtaking.

I have been trying to implement the z slicing technique to animate the noise while using Ron’s class but to no avail. Ron’s example has the Perlin.noise(x, y, z) static method return a Number …. when I onEnterframe with a recall to Perlin.noise with a change in the z parameter I just get a really jerky anim and nowhere near as good looking as yours.

Is there a way to just call Perlin.noise once and then slice from there?

May you please provide some more tips or source code.

thanks again,

Evan

By: seb

seb — Thu, 15 Nov 2007 00:36:40 +0000

Ron : thanks for that, I’ve just integrated the new version and it definitely seems improved. I’m still working and should have couple more examples ready over the next few days.

Kevin : great work… keep sending this through. And I hope you’ll like what I’m about to post… watch this space

By: Kelvin Luck

Kelvin Luck — Tue, 13 Nov 2007 23:30:12 +0000

Glad you liked it Definitely looking forward to seeing where you are taking it in 3D – especially now Ron has optimised the class…

I just blogged my examples and updated the page with instructions for where you can find the sourcecode if anyone is interested:

http://kelvinluck.com/article/flash-on-the-beach-and-some-perlin-noise

By: Ron

Ron — Tue, 13 Nov 2007 18:40:30 +0000

Heh, thanks… but you really should thank Ken Perlin for putting that code up. Hell, I can’t even begin to figure out where to put in an extra dimension in that code of his.
Btw, I’ve updated the class: there was a slight error in the falloff (a higher amount of octaves dampened the result). I’ve also tried to optimize it a bit: precalculated the Math.pow and used multiplication instead of division.