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[Manta] Re: Re: Re: Re: RayPacketData::minT


Chronological Thread 
  • From: Li-Ta Lo < >
  • To:
  • Subject: [Manta] Re: Re: Re: Re: RayPacketData::minT
  • Date: Wed, 10 Sep 2008 08:36:03 -0600
  • Organization: Los Alamos National Lab
On Wed, 2008-09-10 at 07:06 -0600, James Bigler wrote:
> What Abe is mentioning, is that the minT value is based on the length
> of the direction vector.  When someone requests that the direction
> vector be normalized, then minT is rescaled to keep it consistent.  In
> addition this means that minT could have different "units" based on
> the length of the direction vector.
> 
> If you want to compare minT with different rays, you should normalize
> the ray directions with a call to RayPacket::normalizeDirections().

Thanks a lot.

Where is an eye ray generated? In PixelSampler?

Ollie



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