POV-Ray : Newsgroups : povray.programming : still about povray source code : Re: still about povray source code Server Time
28 Jul 2024 14:31:19 EDT (-0400)
  Re: still about povray source code  
From: Ron Parker
Date: 11 Dec 2000 08:19:10
Message: <slrn939l2g.ts4.ron.parker@fwi.com>
On Mon, 11 Dec 2000 13:57:57 +0100, Wlodzimierz ABX Skiba wrote:
>Ron Parker wrote in message ...
>> >All_XXX_Intersections()
>> >
>> >why this not return ALL if there is ALL in name ?
>>
>> It should return all, but meshes and some other objects are exceptions to
>> the rule, usually for speed considerations.  Anything you can use in CSG
>> should definitely return all.
>
>
>hmm, but everything returns only positive vales of depth
>this isn't all

Sure it is.  "All intersections" means "all intersections of the object with
a ray."  Since a ray goes only one direction from a point, all of the
intersections with that ray will be in a positive direction.

-- 
Ron Parker   http://www2.fwi.com/~parkerr/traces.html
My opinions.  Mine.  Not anyone else's.


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