#Lighting Model
3 messages in this thread
Can anyone help with a way of simulating the location of the sun and testing to
see where reflections from other elements will fall?
Specifically we are designing a retail outlet and wish to know whether the
building on the opposite side of the street will cause reflections into our
clients tenancy.
Thanks in anticipation
Peter Kable
Geyer Design Melbourne, Australia.
Peter,
If you're trying to simulate radiossity(bounced light), you may be in for a
challenge. 3DS does not calculate bounced light. However, it can be faked quite
well.
To get the angle of the sun, there are a few programs out there that do it.
There's a routine from Greg Pyros called Sol Track which will generate a sun
path based on geographic location and time of year. You can then have a
spotlight move along that path to analyze where the sunlight will fall on your
model.
Based on the angle of the surface the light is hitting, you could trace a
vector from the surface to your model. That vector would be the light and its
target path that you'd use to simulate the bounced light.
If you plan on doing this quite a bit, you might want to think about writing a
script to help automate this process. It would certainly make animating this
process much easier!
Jh
Jeremy,
Thanks for the tip.
PK