make a 3dsmax noise sop with vex

[mark]

I'm trying to make a custom sop with vex builder. the sop needs to do this:

inputs: x value, y value, z value, scale, seed (and geometry)

the sop needs to move each individual point in x,y,z using some kind of formula such as:

( vector[xvalue,yvalue,zvalue] * scale ) * random[seed]

at least thats what i think the 3dsmax noise does. its great because you can make one brick and add noise, then make 20 copies and change the seed value to have 20 individual but similar bricks. ive missed that in maya and houdini.

so i have the output and some input parameters in vex builder, nothing else seems to work, cant see any kind of tutorial/pdf .. any tips to fill in the gaps?

[edward]

I don't quite understand your brick example. From your vex description, it sounds sorta like the VEX Mountain SOP to me.

[mark]

hi edward

cant believe i didnt know about the mountain sop.. !

very similar, im sure that will do!!

with the brick example i meant that a set of bricks are all very similar but not identical, its good to be able to easily make many bricks from the one geometry, with slight differences (i.e. the seed of the random function)

cheers

[michael]

check out the video tutorial on Geometry Instancing :

http://sidefx.vislab.usyd.edu.au/houdini_v...ring/index.html

[MG]

The Fractal SOP always does the trick for me

[mark]

exactly what i wanted, thanks