Here is an example of rendering with user_definned camera (patch). Essentially
it is camera type where rays sended from camera are defined using functions.
Using user_defined camera you can mimic all already existing camera types as
well as you can average (coordinates, not result) two views, select subviews,
etc, etc. Rays can be placed at any place in any direction. Camera's 'surface'
can have discontinuity areas (correct word?). In posted example there is only
one camera. Four subviews are simple joined using function{select(,,,)} with
other functions. They are as follow:

  top-left     - perspective camera with low angle - nearly orthogonal
  top-right    - rays starts from wall of cylinder but are 'angled' like in 
                 perspective camera so rays are not parallel to plane
  bottom-left  - simple perspective camera
  bottom-right - averaging from spherical camera to orthogonal, from one 
                 location to another

Animated version in p.b.a. Any comments ?

ABX

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hey abx

wow, this looks *very* cool. i really like the idea.

florian

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"ABX" <abx### [at] abxartpl> wrote
> Here is an example of rendering with user_definned camera (patch).

Very interesting! Tell us more

John
--
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Run Free
Run Linux

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On Wed, 19 Feb 2003 15:02:54 -0000, "Doctor John" <jgu### [at] netscapenet>
wrote:
> > Here is an example of rendering with user_definned camera (patch).
>
> Very interesting! Tell us more

I don't know what you want to know... For example using that camera you can:

- make cone, texture, unroll it to flat arc, then print, cut and glue 3d model
- create subviews
- "morph" cameras
- apply real deformation instead of normal{}

Probably controlling it won't be trivial thing.

ABX

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"ABX" <abx### [at] abxartpl> wrote in
> I don't know what you want to know...

Umm, like where can I get the patch? .... or if it's not yet ready for
public release, what sort of time-scale will we be looking at?

John
--
Run Fast
Run Free
Run Linux

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On Wed, 19 Feb 2003 15:45:31 -0000, "Doctor John" <jgu### [at] netscapenet>
wrote:
> "ABX" <abx### [at] abxartpl> wrote in
> > I don't know what you want to know...
>
> Umm, like where can I get the patch? .... or if it's not yet ready for
> public release, what sort of time-scale will we be looking at?

I do not know :-( It's part of next MegaPOV. MegaPOV 1.1 will not be released
before sources of POV-Ray 3.51 because it is builded over 3.51. I do not know
when 3.51 will be available. If you really need user_defined camera patch for
your not started 'Old Technology' image I can mail you necessary changes :-)

ABX

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in news:sh255vomna91r0d9htauhkuhl3p2harpcv@4ax.com ABX wrote:

> Here is an example of rendering with user_definned camera (patch).

Very interesting!
What happens if you use focal blurr? 

Ingo

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"ABX" <abx### [at] abxartpl> wrote
> If you really need user_defined camera patch for
> your not started 'Old Technology' image I can mail you necessary changes
:-)

Thanks for the offer, but don't worry; I'll wait until everyone else gets
it. Besides its a bit late for me to start playing with new effects.

John
--
Run Fast
Run Free
Run Linux

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Cool,
did you made any experiment to render "stereogram", I join one that was done
with 4 different render(4different cameras), and additionnal select, cut &
paste work with paintshop.
It is why i give up to render an animated scene with this technique.
Could it be possible to do it in one shot with your user defined camer?

Chaps.

"ABX" <abx### [at] abxartpl> wrote in message
news:sh255vomna91r0d9htauhkuhl3p2harpcv@4ax.com...
> Here is an example of rendering with user_definned camera (patch).
Essentially
> it is camera type where rays sended from camera are defined using
functions.
> Using user_defined camera you can mimic all already existing camera types
as
> well as you can average (coordinates, not result) two views, select
subviews,
> etc, etc. Rays can be placed at any place in any direction. Camera's
'surface'
> can have discontinuity areas (correct word?). In posted example there is
only
> one camera. Four subviews are simple joined using function{select(,,,)}
with
> other functions. They are as follow:
>
>   top-left     - perspective camera with low angle - nearly orthogonal
>   top-right    - rays starts from wall of cylinder but are 'angled' like
in
>                  perspective camera so rays are not parallel to plane
>   bottom-left  - simple perspective camera
>   bottom-right - averaging from spherical camera to orthogonal, from one
>                  location to another
>
> Animated version in p.b.a. Any comments ?
>
> ABX
>
>

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Attachments:
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"chaps" <cha### [at] yahoocom>:
> Cool,
> did you made any experiment to render "stereogram", I join one that was done
> with 4 different render(4different cameras), and additionnal select, cut &
> paste work with paintshop.
> It is why i give up to render an animated scene with this technique.
> Could it be possible to do it in one shot with your user defined camer?

Unfortunatelly I'm this kind who never play with stereograms because I'm not
able to see it (thought I did not tried it much). I'm not sure what kind of
pseudo 3D images you mean (I recall at least 3 types) but I suppose user_defined
can be enough. Actually I think that another feature will be better for this
purpose: taking view of cameras into pigment{camera_view{camera definition}} and
then combine those pigments in function driven post processing using depth
output. This can be done already.

ABX

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