Getting light to travel around

Jul 30, 2003 8 Replies
A

I have seen some renderings from SW where the light looks like it is coming from a bulb. My challenge to you guys, should you choose to accept the mission, is if anyone has gotten light to travel around an object as the light source.



Example: create a rectangle, fillet the corners, and then do a sweep around the outside of the body with the profile of the sweep as a circle. Basically from there just trying to place a light inside the sweep so that it goes all the way around so as to seem like it is like a neon strip.



Remember ladies and gentlemen this message will blow up 30 seconds after you read it. For all those that choose to take on this assignment, thanks in advance.



P.S. I have tried point lights all teh way around and made the material "constant" but does not quite give me the results that I am looking for.


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N

well I am not sure Arthur 'cause I use Blender for cheapy renders but I think any body can be an emitter with caustics in the way you want.?.....

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M

Here is what you can do with a 'constant' setting for your neon...

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Mike Wilson

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P

Is this close to what you are after?

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..

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P

Like this?:

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(the second one is the same as the first with 'Indirect Illumination' turned on in PWrelease2). Both just have a 'Constant' white material assigned to the cylinder. I also positioned a few point lights here and there to make it all look pretty... ;).

Here's the file if you want it:

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bulb.zip

-brian

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A

Thank you gentlemen for you help. Mike do you think you could get the light to wrap around an object. Meaning a cylinder with a spirling tube going around it from top to bottom?

Once again thanks in advance

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J

snipped-for-privacy@bxhdesigns.com (PW_Guru) wrote in news: snipped-for-privacy@posting.google.com:

What is the shadow near the middle of the tube caused by? Does the tube actually illuminate the scene or do you have to fake it with point lights? I don't have PhotoWorks so I can't experiment. I was just curious.

Joel Moore

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M

This is about the best I can come up with...

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and the file...
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Too bad there isn't some sort of "light emmiting" material setting. Indirect Illumination will come in handy for your project though.

Mike

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A

If you were to take that light and wrap it around the cube as if it were a snake going around it. I am not sure how to post up a link so that you guys can see what I am talk about, but if you were to make a cube and then wrap a "halo" around it... sort to speak.

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