randomiza normals HOUDINI

From http://www.3daet.com/pages/764/random_normal_rotations/

A great way to randomize normals without copy stamping geometry.

Save memory and randomize normals without stamping geometry.

Date Created:Friday March 16th, 2007 01:58 PM
Date Modified:Sunday August 03rd, 2008 09:30 AM

Lay down a grid, and append a point SOP. Use these values for the Position parameter.

TX: $TX+noise($TX*5,$TY*5,$TZ*5)*3
TY: $TY
TZ: $TZ+noise($TX,$TY,$TZ)*2

Toggle on "Add Normal", and set the values to 0 0 1
Append another point SOP, and toggle on "Add Normal". Use these values:

NX: $NX+fit01(rand($PT+1.001),-1,1)
NY: $NY
NZ: $NX+fit01(rand($PT+1000.001),-1,1)

Go to the particle tab, and toggle on "Add Up Vector". Use the values 0 1 0.