This is a tutorial in Light* (formerly
Lightscape), the best radiosity rendering application in the
Keep in mind this is not a tutorial for beginners. You are expected
to have basic knowledge of Light* before the starting this exercise.
I will not go through the modeling process of the project. It
is up to your own discretion as to what package you use for
modeling. For architectural projects, I normally use AutoCAD
A. Importing the model
- As preparation for importing
your model into Light*, during the modeling process, try to
spread out your objects in many layers rather than grouping
everything into a few layers. This will reduce the processing
time in the SOLUTION stage.
- Light* s radiosity calculation
is based on each physical lights. So put each type of lights
on a separate layer. For example, I usually follow this naming
convention for my projects:
All my downlights are named: LT-DN-##
All uplights are named: LT-UP-##
You can use whatever system
that is more comfortable to you. The key point Im
trying to make is ORGANIZATION. You will import your
lights separately after all your other layers are imported.
- When importing your objects,
try to do only a few layers at a time. This will minimize
errors that might occurs when you have a lot of complex objects.
- Figure a shows the dialog
box for DXF import in Light*. Take notice of the File Units
box. I see a lot of people forgetting to set the right units
and their model gets import as the wrong size. Dont
worry about the Block Creation pull-down at this time.
I will go into that later.
Figure b shows the dialog box for 3DS import for Light*.
It is very similar to the DXF import box. As in the DXF import,
ignore the Block Creation pull-down at this time.
- Continue importing all the DXF
files until the entire project (with the exception of the
light layers) are in Light*.
- Now all is left to import are
the lights. Follow the same import procedures as above. But
this time, you are going to fill out the Block Creation
Note: Since were
creating a block & defining the photometrics of each
light (luminaire) in Light*, you only have to export
one of each lights from your modeling application. Also
when exporting those lights from your application, export
only one light at a time.
- Pick As One Block in the Block
Creation pull-down and name the block the same name with the
same layering system for each luminaire.