POV-Ray : Newsgroups : povray.binaries.images : Mirror Ball with Photon Spotlights (30KB) : Re: Mirror Ball with Photon Spotlights (30KB) Server Time
14 Aug 2024 07:09:30 EDT (-0400)
  Re: Mirror Ball with Photon Spotlights (30KB)  
From: Herman Serras
Date: 18 Nov 2002 07:32:32
Message: <3DD8DE05.E103F27@pandora.be>
Thomas Willhalm wrote:
> 
> Slime wrote:
> 
> > I recently made a disco ball image. My solution was to put every facet of
> > the disco ball into an array, remembering its normal, and manually
> > calculate the direction light would bounce off each corner of it from a
> > given light source, and then find the intersections of those with the
> > floor (in your case, with each wall, ceiling, and floor separately),
> > drawing a box between the four corners of the reflection with some
> > triangles.
> >
> > I resorted to this solution because I was also putting *media* in the
> > scene, and this made it a lot faster and more accurate than media photons
> > did. In your case, you may just be able to increase the number of photons,
> > since you have no media.
> 
> I used a similar approach for my disco ball. However, I simply put spot
> lights next to the surface of the disco ball. This saves you from using
> an array. An image, a short animation and source can be found in my
> raytracing gallery at http://www.grafik.willhalm.de/ . Be aware that the
> scene was written for povray 3.0 (or was it 3.1?).
> 
> Thomas

Hello Thomas,
Thank you for your marvellous images and for putting the source
available to other people, learning how to use Povray.
-- 
Herman Serras
Gent (Belgium)
http://cage.rug.ac.be/~hs/


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