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

Vinz ubik.lists at noos.fr
Mon Aug 16 18:09:47 EDT 2010


Thanks! Didn't know about those, and they don't show up with a search 
for noise in the help.

Now why there are so many *noise*() is still a mystery to me!

Vincent

On 17/08/2010 00:03, Alex Lim wrote:
> 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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