[Radiance-general] Image mapping

[Gregory J. Ward]

The 'mixfunc' primitive works if you can specify material using a 
function.  In Rob's case, he might prefer either the 'mixpict' or 
'mixtext' primitive.

-G

> From: cbauer- at t-online.de (Carsten Bauer)
> Date: December 2, 2004 1:20:16 PM PST
>
> Rob Guglielmetti wrote:
>> I'm interested in possibly doing a digital mockup of a store window. 
>> The window will have a translucent graphic applied to the glass, and 
>> will be
>
> Hi Rob,
>
> you can use the classic mixfunc primitive for this, i.e. you mix your 
> mapped image with a 'void' material.
>
> void mixfunc transp_image
> 4 image void fore func.cal
> 0
> n ..
>
> 'fore' gives the foreground coeffcient determined with help of a 
> function in the cal file (if e.g you want the transparency to change 
> over the surface..). Otherwise set 'fore' to a constant value and a 
> '.' (point) for func.cal.
>
> If you apply this mixed material to a trans base, make shure that the 
> roughness parameter is zero to have the light really shine through it.
>
> -cb