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Index › Processing Development › Libraries,  Tool Development › Random number generator: Mersenne Twister
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Random number generator: Mersenne Twister (Read 994 times)
watz
Random number generator: Mersenne Twister
May 16th, 2006, 11:41am  
I've been using a Java implementation of the Mersenne Twister pseudorandom number generator for many years now. It's superior to java.util.Random, which is used by Processing. It creates better random numbers and can be used to create consistent random number series on different computers and VMs, which is useful for rendering on multiple computers etc.

I have packaged it up and posted it as a library for Processing here:
mw_randomMT.

I also posted it as a processinghack. Hope it might be useful to someone.
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marius watz // unlekker // code & form // Generator.x
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seltar
Re: Random number generator: Mersenne Twister
Reply #1 - May 16th, 2006, 4:32pm  
shouldn't millis() be changed to System.currentTimeMillis()?
millis() only gets the number of milliseconds passed since the start of the application, which means your seed is allways (or usually) 0.

Code:

  println(millis()); // outputs 0
  println(System.currentTimeMillis()); // outputs 1.1477899E12


other than that, thanks for sharing Smiley

-seltar
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watz
Re: Random number generator: Mersenne Twister
Reply #2 - May 16th, 2006, 6:02pm  
Good point, forgot that millis() is not the same as System.currentTimeMillis()...
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