Povray support the true displacement?

My curiosity borned from here:
http://cube.phlatt.net/forums/spiraloid/viewtopic.php?TopicID=9

Cheers,

              Manuel

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Manuel wrote:
> 
> Povray support the true displacement?

If you explain what you mean with this someone might be able to answer.

> My curiosity borned from here:
> http://cube.phlatt.net/forums/spiraloid/viewtopic.php?TopicID=9

Remember POV-Ray is a renderer, not a modeller.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 28 Feb. 2003 _____./\/^>_*_<^\/\.______

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On Tue, 27 May 2003 09:49:28 +0200, "Manuel" <man### [at] tinit> wrote:
> Povray support the true displacement?

Yes, no and even more :-)

Yes - you can displace vertices and subdivide triangles in meshes if necessary
with smart macros in your favorite way and then it works similiar to the way
triangle based modelers handle it.

No - you can't freely displace primitives due to mathematical formulas used to
tracing them but they are not available in trangle based modelers so it is not
aplicable to comparison.

Even more - you can displace isosurface in easy way with better quality than
triangle based meshes but it takes computation power.

ABX

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In article <3ed31707$1@news.povray.org> , "Manuel" <man### [at] tinit>
wrote:

> Povray support the true displacement?

You apparently misunderstand how POV-Ray works.  For a quick answer please
read this manual section, which gives a sufficiently short explanation:
9.1.1.11 How can I bend a object?
<http://www.povray.org/documentation/view/307/>

    Thorsten

____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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> Yes, no and even more :-)

Have you a sample for "yes" and "even more" cases?

thx,

             Manuel

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On Tue, 27 May 2003 10:54:20 +0200, "Manuel" <man### [at] tinit> wrote:
> > Yes, no and even more :-)
>
> Have you a sample for "yes" and "even more" cases?

"yes"

  Documentation: 7.12.1.1 The HF Macros

"even more"

  http://news.povray.org/povray.binaries.images/29800/211748/f_teapot.png      
  http://news.povray.org/povray.binaries.animations/23891/167475/wip.mpg
  and a lot from Tor Olav Kristensen  

http://news.povray.org/search/advanced/?s=Kristensen&g=povray.binaries.images&a=1

but that good operating with possibilities of 'yes' and 'even more' cases
require understaing of 'no' answer.

ABX

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In article <il96dvkapmn1ngjhhuc2dsol7likpnr3ar@4ax.com> , ABX 
<abx### [at] abxartpl>  wrote:

>   http://news.povray.org/povray.binaries.animations/23891/167475/wip.mpg

BTW, did you ever finish the morphing texture or make the scene source
available?

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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On Tue, 27 May 2003 12:57:49 +0200, "Thorsten Froehlich" <tho### [at] trfde>
wrote:
> >   http://news.povray.org/povray.binaries.animations/23891/167475/wip.mpg
>
> BTW, did you ever finish the morphing texture or make the scene source
> available?

Current irtc animation topic asks me the same
and I hope I will say 'yes' some day.

ABX

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ABX <abx### [at] abxartpl> wrote:
> you can displace isosurface in easy way

  It might be easy to *you*... ;)

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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On 27 May 2003 07:25:42 -0400, Warp <war### [at] tagpovrayorg> wrote:
> > you can displace isosurface in easy way
>
>  It might be easy to *you*... ;)

Indeed, for those interested there is tiny macro in isocsg prepared:

http://www-public.tu-bs.de:8080/~y0013390/pov/ic/docu02.html#Displace

ABX

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I've found this:
http://www.geocities.com/ccolefax/pcm.html

impressive!

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To answer your question: No. POV-Ray can not displace your objects easily
and on-the-fly. You have 2 options:

(1) Make an isosurface. In many cases you can displace it nicely, and memory
usage is very low. But it's not for imported meshes, so you're lost in case
with the dinosaur. You could transfer the object you want to displace to a
DF3 file, then isosurfaces can handle it, but then the memory usage would go
op. Rendering isosurfaces are also rather slow, compared to solution 2:

(2) Import a mesh that is already displaced. This renders quickly. The only
drawback is the memory usage, that is easily huge.

Regards,
Hugo

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> (1) Make an isosurface. In many cases you can displace it nicely, and
memory
> usage is very low. But it's not for imported meshes, so you're lost in
case
> with the dinosaur. You could transfer the object you want to displace to a
> DF3 file, then isosurfaces can handle it, but then the memory usage would
go
> op. Rendering isosurfaces are also rather slow, compared to solution 2:

Thanks!
What's DF3 file??

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Oops.
I've try DF3 here!
http://www.povray.org/documentation/view/195/#s06_07_11_11


Sorry for stupid question :-(

Ciao,

              Manuel

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> I've try DF3 here!
> http://www.povray.org/documentation/view/195/#s06_07_11_11

Yes, and you may also want to see the recent post in the images group, from
Tor Olav Kristensen, named "fast preview for complex isosurfaces - 2
attachments".

Regards,
Hugo

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