volumetric light effect

[afternooncoffeeboy]

i guess u have to position ur visible light 'inside' the cap geometry and set it to invers

[LucentDreams]

or exclude the lightbulb instead of inverse volumetric.

[Mike Abbott]

Set the position of the light above the fitting, so the spread of the light cone is appropriate.

(If it needs to be volumetric, rather than just visible, you'll need to 'exclude' the light fitting from the light in the scene tab.)

In the lights visibility tab:
"use falloff" should be on,
"use gradient" should be on.

Then make a stepped black to white gradient (interpolation 'none') - where the black to white step is determines where the visible light starts - so adjust this so it matches the edge of your light fitting.


Mike Abbott

[LucentDreams]

mike just gave me an idea, you could also just us light clipping. always forget that feature. no includes and excludes no gradients just set the near clip to th distance from the light to the tip of the bulb.

[sketchbook]

hmm. i tried the gradient with the light above and must have missed interpolation = none or something.

clipping sounds like a good plan as well. that would come in handy in many applications!

thanks

[Mike Abbott]

Here's a demo file (C4D v10)

Mike

[sketchbook]

i will try this out thanks.

i found "near clip" to be somewhat buggy. it doesn't fully clip the light. the gradient worked great!

[vid2k2]

Depending on the height of your shade, you may want to use a
paralell spot instead of a regular spot.

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