"Leonardo" <lmf### [at] megaistutlpt> wrote in message
news:web.40d9ad47b0d1a68d27bbadf50@news.povray.org...
> I'm using POVRay 3.6 at WinXP Pro, and found that the following
> scene reports 4 *infinite* objects:
>
> sphere {0, 1358}
> sphere {5000, 1358}
> box {-1358, 1358}
> box {0, 2*1358}
>
> But the following scene reports (as expected) 4 finite objects:
>
> sphere {0, 1357}
> sphere {5000, 1357}
> box {-1357, 1357}
> box {0, 2*1357}
>
> It seems that the condition for an object to be infinite is related to its
> bounding box, and that there is some constant (around 2*1357) which acts
as
> a threshold.
> Would this be a bug?
>
>

you still get the infinte object count of 4 for several scale factors such
as:

sphere {0, 1358  scale 1.2}
sphere {5000, 1358  scale 1.2}
box {-1358, 1358  scale 1.2}
box {0, 2*1358  scale 1.2}


you get a count of 4 finite objects if you have:

sphere {0, 1358  scale 0.1}
sphere {5000, 1358  scale 0.1}
box {-1358, 1358  scale 0.1}
box {0, 2*1358  scale 0.1}

however, if you scale by 0.2, you get 4 infinites:

sphere {0, 1358  scale 0.2}
sphere {5000, 1358  scale 0.2}
box {-1358, 1358  scale 0.2}
box {0, 2*1358  scale 0.2}

i didn't find a number greater than 1 that resulted in finite object counts.
these were just my quick observations, for whatever they're worth.

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