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Old 4th November 2009, 12:49 PM   #1
HowDo
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Default Light shining through object in pov?

Hi All,

Anyone worked out how to to get pov to shine a light through and object (lamp shade look) as I have a lamp which I can get the light to shine out the top hole and bottom but cannot work out how to set it shine the light through the object.
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Old 4th November 2009, 05:34 PM   #2
lisa
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Default Re: Light shining through object in pov?

Do you mean crepuscular rays (aka. "God rays") coming out the top and bottom like a cone, or do you mean making the lamp shade material allow light to glow through the shade itself?

For rays, you'll need to enable atmospheric media as well as photo mapping. There's a tutorial in the manual you can find here: http://www.povray.org/documentation/view/3.6.1/101/
The effect does take a good bit of tweaking and it takes a *long* time to render--hours or days--but done right it looks spectacular.

Glowing is easier. You'll want to use the "filter" or "transmit" keyword on your material. Filter indicates color-filtered light moving through a substance, like light moving through a stained glass window. Transmit is non-filtered light, like light moving through fine netting. Something like a lampshade would be a combination of the two.
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Old 5th November 2009, 07:00 AM   #3
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Default Re: Light shining through object in pov?

thanks Lisa onec again you come up trumps with your answers, will be trying the "filter" or "transmit" ideal.
POV good but a hard beast to get it to tell you whats wrong like using color names when you've not loaded the include the color name file, worked out in the end.
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Old 5th November 2009, 02:38 PM   #4
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Default Re: Light shining through object in pov?

Yeah, POV isn't the most user-friendly. But it does make pretty pictures.
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