The Bias VOP is based on Perlin’s section in Texture & Modeling, and is currently only used in some of the older materials.

The basic process is to take:

result = amount / ( ((1/value) - 2) * (1 - amount) + 1);

Where value is the Input, and amount is the Bias.

olivierth
jsmack: I have no idea what you are talking about. Don't forget I'm a super noob in houdini. I just started.

#include <voplib.h>
@P.y = vop_bias(@P.x, 0.25);

Ryu Ku
tamte

if we don't write #include <xxx.h> above the code - Houdini doesn't look inside this library (and wrangle e.g. with your example gives a mistake saying i call undefined function), and if we do - we tell him to go to the mentioned library to find information about code executing?
how do you understand you need to call this? you knew that formula's contained there? you've read it as a text document? we can write the same without #include but longer or for some functions we need to use only this way?
for Python with this code we tell to import everything from module from lib/ standard library? or you mean something else i miss? it's awfully i didn't touch it for a couple of weeks though it's so taking and maybe i tell something absolutely incorrect, but

import random
return(random.random())

should be written seems differently with

from random import *

cause it doesn't do the same, or maybe i tell about something wrong and without needed understaning

from random import *

import random
print(random.random())

from random import *
print(random())

from random import random
print(random())