Hi Tim,
Haze is the percentage of transmitted light which deviates from the
incident direction. So you could interpret the haze to mean that 50% of
the transmitted light is diffused.
As a first approximation I would use trans with the following transmission
properties:
Ts = 0.455
Td = 0.455
Though with a haze of 50% assuming that the scattered light is lambertian
is a bit of a stretch.
Andy
···
On Mon, Mar 11, 2013 at 10:45 AM, Tim Perry <[email protected]> wrote:
Hello,
I've been asked to model windows that have a film with 50% haze and
91% transmission.
I do not have a BSDF for the material. The best option I can think of
is to use the trans material with 91% transmission and hope that it
provides about 50% haze. Does anyone have experience modeling film
based on haze? If so, any pointers? A tutorial I should look at?
Thanks,
Tim Perry
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Dear Chris, Andy,
Thank you for the reference and the feedback. I think I'll use Andy's
definition even though the distribution of light is definitely not
lambertian. It should provides sufficiently accurate results for the
task at hand.
I think I'll ask the client if they have a BSDF first though.
Thanks again,
Tim
···
On Mon, Mar 11, 2013 at 11:05 AM, Andrew McNeil <[email protected]> wrote:
Hi Tim,
Haze is the percentage of transmitted light which deviates from the incident
direction. So you could interpret the haze to mean that 50% of the
transmitted light is diffused.
As a first approximation I would use trans with the following transmission
properties:
Ts = 0.455
Td = 0.455
Though with a haze of 50% assuming that the scattered light is lambertian is
a bit of a stretch.
Andy
On Mon, Mar 11, 2013 at 10:45 AM, Tim Perry <[email protected]> wrote:
Hello,
I've been asked to model windows that have a film with 50% haze and
91% transmission.
I do not have a BSDF for the material. The best option I can think of
is to use the trans material with 91% transmission and hope that it
provides about 50% haze. Does anyone have experience modeling film
based on haze? If so, any pointers? A tutorial I should look at?
Thanks,
Tim Perry
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general