[Sidefx-houdini-list] noise() different in vex and in expression ?

Alex Lim list at poh-yee.com
Mon Aug 16 18:03:08 EDT 2010


Hi, perhaps hscript_noise() might be of interest?

There are also hscript_turb(), hscript_snoise(), and hscript_sturb() too!



On 8/16/2010 3:00 PM, Vinz wrote:
> Hi,
>
> Just continuing my study about noise in Houdini, I can't seem to find
> the equivalent in vex of a simple noise() in a point sop.
>
> With the same input, noise($TX,$TY,$TZ) in a point sop doesn't give the
> same result as noise(P) in vex.
>
> Even the characteristics of the noise seem different, noise() in vex
> gives me only positive values, between 0.2 and 0.8 whereas noise() in my
> point sop gives me values centered around 0, between -0.5  and 0.5.
>
> onoise(P) is closer, but not the same either.
>
> Thanks a lot,
> Vincent
>
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