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
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 
I'd like to help you more, but I need permission from my employer for that
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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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
I'd like to help you more, but I need permission
from my employer for
that
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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Radiance-general mailing list
Radiance-general at radiance-online.org
http://www.radiance->online.org/mailman/listinfo/radiance-general
···
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