perlin-noise

Procedural Hash Function

I am wondering what is the best hash function for procedural textures, especially perlin noise. I know about the PRNG posted on this page, but this claims that it is not a good PRNG Thanks ...

How to create a fractal cube?

I would like to render volumetric clouds in OpenGL. I found an interesting paper that describes a simple technique to render volumetric clouds. (http://www.inframez.com/events_volclouds_slide18.htm) However I don't know how to create their "fractal cube" (or perlin-noise cube). My question is: how to create the 6 tileable fractal textur...

Improved Perlin Noise module for Lua

I need Improved Perlin Noise in my Lua code. Are there any decent open-source Lua C modules available? Or is there any nice C library that I can write a wrapper for (perhaps with other noise functions)? I know that it is not hard to write one myself (reference code in Java is trivial to port), but I do not want to reinvent the wheel h...

What content have you made/seen made using procedural techniques

Hey S.O. guys, I was looking at some study i have to do in the future to do with procedural generation techniques and i was wondering what type of content you have: Developed Helped Develop Seen implemented Tried to develop and what methods/techniques/procedures you used to develop it. If you feel generous maybe you can even go into spec...

How to generate Perlin Noise on an iPhone

Hi, I want to create an animated perlin noise on the iPhone, so I can ultimately do something like this: http://dl.dropbox.com/u/1977230/example.png I've looked and looked, but can't find anything similar or a way to actually display a Perlin Noise. I've been told to look at OpenGL ES, but even searching for an example of Perlin noise...

Offloading to HLSL/GPU without displaying?

As far as I know, certain mathematical functions like FFTs and perlin noise, etc. can be much faster when done on the GPU as a pixel shader. My question is, if I wanted to exploit this to calculate results and stream to bitmaps, could I do it without needing to actually display it in Silverlight or something? More specifically, I was th...

Good Perlin noise resources/implementation?

Are there any good resources out there detailing Perlin noise generation? I understand that most languages have noise generating libraries available, but I'm interested in creating my own for fun/experience. I've already looked at this, which seems pretty popular, but it only gives an in-depth explanation of one dimensional noise. Google...

Perlin Noise detail level. How to zoom in on a landscape?

I've written my own Perlin Noise implementation and it works well. I can 'zoom' in and out by changing the frequency, but as I zoom in the noise gets smoother and smoother. Assume I have a landscape that displays a continent. I want to zoom in down to a city-size area (or closer), but still have detail. I think I need to re-generate the...

Perlin noise algorithm

I'm having difficulty understanding a lot of the highly mathematical papers available online describing how Perlin noise generation works, and I'm wondering if anyone could point me in the direction of a more accessible introduction. I am looking to use Perlin noise in an application to create 2D textures. ...

How to achieve PerlinNoise Spherical Motion?

Hi, I am looking for an algorithm to move a set of objects using Perlin Noise in a spherical manner, if that makes sense. Thanks! ...