Omni lights & shadows ?
3 messages in this thread
While working with the tutorials I tried something that worked, some what.
I put an omni light in an object (a glass and a box). The results were what I
expected. The 'inside' of the glass and/or box had the color assigned to the
light. However, some of the shadows 'outside' of the object also had the
color. This I did not expect.
Is this a problem or do I not understand how omni lights work. (I used a spot
light with an ajusted target in the glass to get the same effect with out the
shadow being colored.))
Also, another question. How can a light be 'seen'? I tried pointing the
camera directly at a light but I did not see it even though the results of the
light were visable. (I don't mean to see the lights 'rays'. I understand that
that is a different effect.)
Thanks for any answer.
Haven't played with omni's inside objects, but for "visible light"
there are a few tricks you'll want to check out:
1) Use an object with opacity mapping, self illumination, and transparency to
simulate "shafts" or "beams" of light.
2) Smoke IPAS will show light. I don't have this, but I've seen nice
effects with it, like CHAPEL.JPG on the WCT CD-ROM
3) For other lighting effects the YOST IPAS collection #1 has lens
flare, highlight, and glow. These are pretty self explanatory.
The above mentioned IPAS' are all R2, with R3 updates to be released
sometime this spring.
You can simulate a light source by creating a sphere at the source of
the light, assigning a self illuminated material the same color as
your light, and modify/object/attributes to turn off the "casts
shadows" button (otherwise the sphere will block the light). This
would look (similar) to a light bulb when viewed by the camera.