Stephen <mca### [at] aolcom> wrote:
> On 8/22/2015 10:13 PM, LanuHum wrote:
> > Stephen <mca### [at] aolcom> wrote:
> >> On 8/22/2015 8:55 PM, LanuHum wrote:
> >>>       contained_by { box{-1, 1} }
> >>
> >> Have you tried increasing the contained_by?
> >>
> >> --
> >>
> >> Regards
> >>       Stephen
> >
> > No!
> > I don't know an origin of these parameters.
> > I only try to connect the Blender with Povray.
> > Therefore I ask for help.
> > Thanks!
> > The increase in contained_by normalizes a situation.
> > Let the user choose.
>
> You might want to try min_extent and max_extent to define the
> contained_by box (can also be a sphere)
>
> Help 3.3.1.6.5 Functions
>
> min_extent(OBJECT_IDENTIFIER), max_extent(OBJECT_IDENTIFIER). The
> min_extent and max_extent return the minimum and maximum coordinates of
> a #declared object's bounding box (Corner1 and Corner2), in effect
> allowing you to find the dimensions and location of the object.
>
> Note: This is not perfect, in some cases (such as CSG intersections and
> differences or isosurfaces) the bounding box does not represent the
> actual dimensions of the object.
>
> > I wouldn't begin to use objects of parametric in the scenes because of very long
> > time of a render.
>
> Me too :)
>
> > Developers advance the ideas.
> > Sometimes these ideas incorrect, but I can't interfere
>
> True ;-)
>
> > http://www.youtube.com/watch?v=nVO1zDQc5LU
> >
>
> I do not understand why you show this
> Unless it is an example of this:
>
> >> Developers advance the ideas.
> >> Sometimes these ideas incorrect, but I can't interfere
>
> :-)
> --
>
> Regards
>      Stephen

Thanks! Yes, you correct understand :)



clipka <ano### [at] anonymousorg> wrote:
> Am 23.08.2015 um 06:08 schrieb Stephen:
> > On 8/22/2015 10:13 PM, LanuHum wrote:
> >> Stephen <mca### [at] aolcom> wrote:
> >>> On 8/22/2015 8:55 PM, LanuHum wrote:
> >>>>       contained_by { box{-1, 1} }
> >>>
> >>> Have you tried increasing the contained_by?
> >>>
> >>> --
> >>>
> >>> Regards
> >>>       Stephen
> >>
> >> No!
> >> I don't know an origin of these parameters.
> >> I only try to connect the Blender with Povray.
> >> Therefore I ask for help.
> >> Thanks!
> >> The increase in contained_by normalizes a situation.
> >> Let the user choose.
> >
> > You might want to try min_extent and max_extent to define the
> > contained_by box (can also be a sphere)
>
> Unfortunately that won't help with this issue, as min_extent and
> max_extent give you the extent of the object's bounding box (rather than
> the object itself), which in case of parametrics is in turn simply based
> on the contained_by object.
>
> One possible solution would be to evaluate some sample points from the
> function set (possibly using an adaptive algorithm), and create the
> contained_by box based on the range of the results (with some additional
> margin).

Thanks!


"Nekar Xenos" <nek### [at] gmailcom> wrote:
> I'm not sure if Pov-Ray converts a Parametric to a mesh for rendering. If
> it does, then maybe it would be faster if you use the Blender mesh rather
> than the Pov-Ray paramtric.
>
> Another reason for the slow speed might be that the camera is placed in a
> position that results in too many computations - it almost looks like the
> camera is inside the shell or intersecting with the edge of the shell.
>
> --
> -Nekar Xenos-

I test all objects at one position of the camera. If the sphere is rendered
quickly, I can't tell that it is rendered slowly.
But, my opinion is only my opinion. Let users decide that such quickly and that
such slowly. I can't use a renderer of Cycles, because very slowly. Others use
and rejoice, are happy.
Also, I give transformations to a renderer not to spend time for writing of the
file.
But, if to convert all objects in mesh, to the Blender it will be heavy

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