[Radiance-general] integral of radiation in one point

[Minki Sung]

Hi Betti,

I think you can refer to Greg's answer to my question "Spherical sensor."
in Vol 94, Issue 11.
Good luck!

Minki


Date: Tue, 8 May 2012 12:42:03 +0100
From: "Giovanni Betti" <gbetti at fosterandpartners.com>
To: "Radiance general discussion"
       <radiance-general at radiance-online.org>
Subject: [Radiance-general] integral of radiation in one point
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       <6F5225D6E15F954BB4E58EC25F6736C308CFCE7D at corp3005.CORPORATE.
FOSTER.NETWORK>

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Dear list,



I have question that I hope you'll help get my head around.

I want to calculate the overall illuminance on a point in space that is,
regardless of directionality.

I have made some simplified 2d sketches for clarity.

As I understand a radiance sensor point in rtrace will have cosine
related sensitivity (image01)

If I am to place two coincident with opposing normals (image2) I'll miss
on contributions from the sides.

Rotating the normals by 90 degrees at a time (figure 3) and summing
contributions might not work either because will overestimate diagonal
contributions (figure 4 ).

So I'm not getting too much closer to the solution...



Is there something that I am missing here?

Any light on this will be appreciated,



Best,

Giovanni Betti
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