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In article <3ca75bf1@news.povray.org>, Warp <war### [at] tag povrayorg>
wrote:
> Does clipped_by convert an infinite object to a finite one (internally,
> I mean)?
>
> The best thing to do is:
>
> clipped_by { something } bounded_by { clipped_by }
As I remember, clipped_by (and contained_by, in the case of isosurfaces)
automatically set bounded_by. Wouldn't hurt to do it explicitly, though.
--
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/
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On Sun, 31 Mar 2002 15:09:24 -0600, Christopher James Huff <chr### [at] maccom>
wrote:
> > The best thing to do is:
> > clipped_by { something } bounded_by { clipped_by }
>
> As I remember, clipped_by (and contained_by, in the case of isosurfaces)
> automatically set bounded_by.
When bounded_by has smaller volume then probably not.
ABX
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In article <q2kiauck2g0hv0fkjqb35s2osq0ppflatv@4ax.com>,
W?odzimierz ABX Skiba <abx### [at] babilonorg> wrote:
> > As I remember, clipped_by (and contained_by, in the case of isosurfaces)
> > automatically set bounded_by.
>
> When bounded_by has smaller volume then probably not.
No, always. THe default bounding box will fit the default contained_by
object, not changing it when a bigger contained_by is used would be a
bug.
--
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/
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On Tue, 02 Apr 2002 10:01:01 -0600, Christopher James Huff <chr### [at] maccom>
wrote:
> > When bounded_by has smaller volume then probably not.
>
> No, always. THe default bounding box will fit the default contained_by
> object, not changing it when a bigger contained_by is used would be a
> bug.
I was refered to clipped_be versus bounded_by from yours previous post. You
said: "clipped_by (...) automatically set bounded_by". There is known method to
put bounding sphere near camera for object far away camera. If such object have
clipped_by and this clipping object would set bounded_by automatically then it
sounds a little like a bug for me.
ABX
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In article <joijau009g81v8udi3lh87f9ajdc2qa416@4ax.com>,
W?odzimierz ABX Skiba <abx### [at] babilonorg> wrote:
> I was refered to clipped_be versus bounded_by from yours previous
> post. You said: "clipped_by (...) automatically set bounded_by".
> There is known method to put bounding sphere near camera for object
> far away camera. If such object have clipped_by and this clipping
> object would set bounded_by automatically then it sounds a little
> like a bug for me.
The situation is similar...not setting bounded_by would be a bug. POV
doesn't know about these tricks, to it, the bounding box is wrong
because some rays that hit the object won't hit the box. If it didn't
adjust it, it would cause problems in almost every scene, and the user
would have to manually bound it. However, it shouldn't override the
user-specified bounding shape, and I don't know if it does so.
Specifying bounded_by after contained_by or clipped_by should work
anyway.
--
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/
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