[Radiance-general] Re: BWAVE.CAL

[Greg Ward]

This file is part of the conference room model.  It consists of two 
sine wave functions (horizontal and vertical) multiplied together with 
some fractal noise thrown in.  If you have a scan of a carpet, you can 
use it in a colorpict with tile_u and tile_v coordinates from 
picture.cal.  I would apply some noise to the coordinate positions and 
the rgb values to avoid a repetitive appearance.  See shake.cal in the 
ray/obj/cabin directory as an example.

-Greg

{
	this file creates the waves of the pinboard and carpet
}
bwave=1-.5*( fnoise3(Px*4,Py*4,Pz*4)/2 +1 ) * ( sin(Px*2*PI)/3 + 2/3 )*
    ( sin(Py*2*PI)/3 +2/3 );


> From: "Marcus Jacobs" <marcdevon@hotmail.com>
>
> Dear Group
>
> Lately, I have been attempting to simulate the bumpiness of a carpet 
> texture. While seaching on the web, I ran across a site that listed a 
> cal file called bwave.cal with the following description:
>
> "this file creates the waves of the pinboard and carpet "
>
> Does anyone have a copy of this file. Also, does anyone have any cal 
> files that can simulate the subtle bumpiness of carpet. I may try 
> experimenting with weave .cal to see if I can achieve good results.
>
> Regards
>
> Marcus D. Jacobs