[Radiance-general] Trans Rendering Issue

[Richard Mistrick]

Garry,

I think this is its standard mode of operation.  Rendering illuminance really only makes sense in a pseudocolor type image (or perhaps one that is contoured).  A black and white surface that are side by side would have the same illuminance, so they would be rendered the same.  Determining the illuminance onto the emitting side of a trans surface doesn't really have much meaning (and I believe it is non-reflective), so the material is not shown (see the -i option on the rpict manpage).

For accurate visualization, luminance renderings should be selected (which is what our eye or a camera sees).

Rick

From: Garry Luu [mailto:Garry.Luu at steensenvarming.com]
Sent: Thursday, September 17, 2015 10:07 PM
To: radiance-general at radiance-online.org
Subject: [Radiance-general] Trans Rendering Issue

Hi All,

I'm relatively new to Radiance. I'm using the trans modifier and am coming across issues when rendering.

When I try to render my scene for Illuminance values, the output render removes the translucent material from the scene, exposing the interior to the external exterior. However when I render for luminance results, everything works fine.

Has anyone come across this issue before and know what might be causing the issue.

Thanks

Garry

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