[Radiance-general] Antimatter

[Jack de Valpine]

Hi Rob,

If you do the following it should work with a material at the cut:

void antimatter cutter
2 sketchup_default_material sketchup_default_material
0
0

-Jack

-- 
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction


Fitzsimmons, Rob wrote:
>
> As a test, I did this in sketchup, and got curious results...
> The light goes through, but only on the edge. All the grey boxes are 
> antimatter, cutting through the wall.
>
> http://rastermon.com/images/antimatter.jpg
> http://rastermon.com/images/antisketchup.gif
>
> my materials:
> ## material conversion from Sketchup rgb color
> void plastic sketchup_default_material
> 0
> 0
> 5 0.1400 0.3400 0.3400 0.000 0.000
>
> void antimatter cutter
> 2 void sketchup_default_material
> 0
> 0
>
>
> Rob Fitz
>
>
> -----Original Message-----
> From: radiance-general-bounces at radiance-online.org on behalf of 
> Giovanni Betti
> Sent: Fri 10/30/2009 9:40 AM
> To: Radiance general discussion
> Subject: [Radiance-general] Antimatter
>
>
> Dear All,
>
> It has been a real pleasure to have the chance to be at the radiance
> workshop in Cambridge and to meet all the great guys there and to listen
> to so many inspiring presentations (btw, really looking forward to see
> them on line!)
>
> Now back to the office and again fighting with day to day issues. I am
> trying to model a series of openings in a screen using antimatter and I
> am getting really confused.
> The screen is modelled as a single surface intersected by a number of
> cubes. As in the antimatter description I read:
> "The viewpoint must be outside all volumes concerned for a correct
> rendering." I assume that means that the camera should not be inside one
> of the cubes and that (I guess) the cube normals should point outward.
> Done that, I am able to see through the cubes but I do not see the
> pattern of light coming through the antimatter holes, I just have a big
> solid shadow...
>
> Is that how it is supposed to behave? Does anybody have any clue about
> what I am doing wrong?
>
> Thanks in advance,
> Best,
>
> Giovanni
>
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