[Radiance-general] Waldram projection camera views.

[Nicholas Lander]

Nick,

If you’re looking at right to light issues, I’d
suggest using a simpler program, such as Ecotect
(www.squ1.com)  which calculates waldram diagrams for
you.  If memory serves, waldram diagrams come up in
terms of view of sky / skylight availability, which
are geometric issues, rather than ones of daylight.  

Then you can just use Radiance in the regular way to
work out change in available daylight in a room.

Regards,

Nick L

>Hi Nick,
>
>Try writing a .cal file that deforms a regular grid
>of rays into a 
>waldram grid.  You can find the equation for
>waldrams in oen of Percy J. 
>Waldram's publications.  You can then fire the
>deformed rays into your 
>scene, deforming the final render.
>
>You can then overlay the grid by writing >another
.cal file that 
>generates a grid overlay on the fly for pcomb.
>
>It's kind of tricky, but really the devil is in the
>details :D
>
>I'd like to help you more, but I need permission
>from my employer for 
>that :D
>
>Chris
>
>nick devlin wrote:
>> Good morning,
>> 
>> I am interested to know if it is possible to
>generate a camera view 
>> that  replicates the projection of a waldram
>diagram? I then assume it 
>> would be  possible to overlay the relevant waldram
>diagram using Pcomb.
>> 
>> In particular I am looking to address the
>calculations of Rights to 
>> Light  issues in the UK. I am confident of being
>able to calculate the 
>> sky  component within a scene at reference points,
>but as a nervious 
>> beginner  would like to be able to generate the
>waldram diagram from the 
>> same  reference points to double check the
>accuracy [and convince 
>> potential  clients].
>> 
>> Many thanks..
>> 
>> Nickd
>> 
>> 
>> 
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>>
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