[Bf-funboard] A needed node.

[Knapp]

A lot of people would like a random number input. The only thing I can find
is the random on the object

You see a lot of hacked things on the net like this or other hacks but they
are not nicely done or clean. A simple node that gives out a random number
would be great to have, with a seed input? . Perhaps other ideas might be
perlin noise etc and a time node so that we can feed that into the seed.

Using the Object Random is OK but if you feed it into a combine RGB you
just get shades of grey, not what is needed in many cases. We need 3
different numbers.

Here is on OSL node that is trying to get past the problem. Don't know but
would bet this is slower than a built in node.

#include "stdosl.h"

shader RandomColor(
    output color RandomColor=0)
{
    float Random=0;
    float R=0;
    float G=0;
    float B=0;
    getattribute("object:random", Random);
    R=trunc(Random*100.0)/100.0;
    G=trunc((Random*100.0-trunc(Random*100.0))*100.0)/100.0;
    B=trunc((Random*10000.0-trunc(Random*10000.0))*100.0)/100.0;
    RandomColor=color(R,G,B);
}

-- 
Douglas E Knapp

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