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From some of the threads concerning the new POV version, I have gotten the
idea that v3.1 will allow VOLUME rendering via the DENSITY object. Is this
correct? For example, I generate a cubical volume in space in which I have
regions of varying density. At every <x(i),y(i),z(i)> point I have an
associated density value, d(i). Can I now use v3.1 to specify these density
values across the entire cube to POV and it will generate a rendered image
of the volume with shading of various volumes (collection of voxels)
determined by the light passing through and/ or reflecting from/ absorbed by
each voxel?
Jim
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Jim Kress wrote:
>
> From some of the threads concerning the new POV version, I have gotten the
> idea that v3.1 will allow VOLUME rendering via the DENSITY object. Is this
> correct? For example, I generate a cubical volume in space in which I have
> regions of varying density. At every <x(i),y(i),z(i)> point I have an
> associated density value, d(i). Can I now use v3.1 to specify these density
> values across the entire cube to POV and it will generate a rendered image
> of the volume with shading of various volumes (collection of voxels)
> determined by the light passing through and/ or reflecting from/ absorbed by
> each voxel?
>
> Jim
Apparently so. Not actually a density object but an interior media type.
There's a demo of this in the beta package. Note though, that where the
density file name is specified, I had to modify it to include the full
path name of the file (it's in the include directory), I've heard that
others have had this problem as well.
Cheers, PoD.
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Which demo?
Jim
PoD wrote in message <35B### [at] merlin netau>...
>Jim Kress wrote:
>>
>> From some of the threads concerning the new POV version, I have gotten
the
>> idea that v3.1 will allow VOLUME rendering via the DENSITY object. Is
this
>> correct? For example, I generate a cubical volume in space in which I
have
>> regions of varying density. At every <x(i),y(i),z(i)> point I have an
>> associated density value, d(i). Can I now use v3.1 to specify these
density
>> values across the entire cube to POV and it will generate a rendered
image
>> of the volume with shading of various volumes (collection of voxels)
>> determined by the light passing through and/ or reflecting from/ absorbed
by
>> each voxel?
>>
>> Jim
>
>Apparently so. Not actually a density object but an interior media type.
>There's a demo of this in the beta package. Note though, that where the
>density file name is specified, I had to modify it to include the full
>path name of the file (it's in the include directory), I've heard that
>others have had this problem as well.
>
>Cheers, PoD.
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The file is galaxy.pov in the media demos. The file requires spiral.df3 to
be in the same directory for it to be found, at least, that's how I got it
to work. The docs give a short explaination on how the .df3 format works,
but it's not enough for me to make sense of it.
Keep in mind that you don't need one of these density files to do volume
rendering. You can use any pattern in media. Use a scattering type for it
and it will behave like atmosphere.
-Mike
Jim Kress <jim### [at] dccmailcom> wrote in article
<35b21451.0@news.povray.org>...
> Which demo?
>
> Jim
>
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