On 09/14/2016 03:07 PM, Berserk wrote:
>
> Sorry for too much posting.
> The only unanswered question remaining is:
> 1) Can a video be used as a texture for a 3D surface?

    Somethink like that ?
           http://la.buvette.org/vrac/composite.avi

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> Sorry for too much posting.
> The only unanswered question remaining is:
> 1) Can a video be used as a texture for a 3D surface?
>
> Thanks in advance for any help.

Not directly using only POV, no.

But as clipka already said, you can convert the video to a series of 
image files using an external program (I use avisynth, but there are 
surely others).

In your POV scene, when rendering the animation, you then select which 
image to load based on the time.

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tth <tth### [at] noneinvalid> wrote:

>     Somethink like that ?
>            http://la.buvette.org/vrac/composite.avi

That is wicked cool.
A very nice effect that probably took a lot of work to get to work, and likely a
lot of rendering and post-processing time to make into the full animation.

Very nice work.

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Thanks everyone for the replyes.

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tth <tth### [at] noneinvalid> wrote:
> On 09/14/2016 03:07 PM, Berserk wrote:
> >
> > Sorry for too much posting.
> > The only unanswered question remaining is:
> > 1) Can a video be used as a texture for a 3D surface?
>
>     Somethink like that ?
>            http://la.buvette.org/vrac/composite.avi

Yes, exactly

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> Hello there. My name is Ivano Arrighetta and I'm Italian.
> I would like to know more about povray used with FFMPEG and imagemagick
> and in detail:
>
> 1) Can it capture images from scanner and/or webcam?
As Clipca said, was possible but have been removed.
It can use an image from a scanner of a still captured from a webcam and 
saved as an image file. That image can be used as an image_map.
> 2) Can it do OCR?
NO.
> 3) Can a 2D surface be extruded?
Yes as a prism. You need to enter the coordinates of the control points 
and set the height. Also, an image can be used in a height field object 
where the brightness controls the height of the surface.
> 4) Can a raster image be used as a sound? (maybe like a spectrum or so)
No.
> 5) Can it do vector animations?
Not directly. If you have the vector shape definition, it may be 
possible to use it to create a polygon object, have no thickness and 
only straight edges, or a prism of any thickness and may have smoothly 
curving edges.
> 6) Can it generate 3D geometry?
Yes as any of the supported primitives, one of witch is the mesh. If you 
want to export those, you'll probably need to convert into a mesh. This 
is NOT obvious nor easy as POV-Ray never work internally with mesh 
except for the mesh primitive.
> 7) Can it add 3D modifyers? (like twist, tape, bend, etc)
Not easily. You need to define your shape as a function, or combination 
of functions, and perform the distortion in an isosurface.
> 8) Can it synthesize audio?
No. POV-Ray have no concept of sounds at all outside of the sounds 
signals it may play on completion of a render or to signal an error.
> 9) Can it capture audio from a microphone?
No. See point 8.
> 10) Can it convert an audio stream to a raster image?
No. See point 8.
> 11) Can it capture a video from webcam or the desktop?
No. This a repeat of point 1.
> 12) Can a video be used as a texture for a 3D surface?
Not directly. Same as point 11.
>
> Thanks in advance for any help.
>
> Bye, Ivano.
>
>
>

Alain

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On 9/14/2016 6:24 PM, Berserk wrote:
> tth <tth### [at] noneinvalid> wrote:
>> On 09/14/2016 03:07 PM, Berserk wrote:
>>>
>>> Sorry for too much posting.
>>> The only unanswered question remaining is:
>>> 1) Can a video be used as a texture for a 3D surface?
>>
>>      Somethink like that ?
>>             http://la.buvette.org/vrac/composite.avi
>
> Yes, exactly
>
>

Yes PovRay can do that. ;)


-- 

Regards
     Stephen

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Hello everyone.
I mantain a list of questions with answers on my website, at:
http://bisentertainment.altervista.org/great-project.html

Please, visit it.

Bye, Ivano.

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With some tricks Csound can be controlled from the SDL. At least it has 
been done in the past. https://www.youtube.com/watch?v=4dsRyZGt_co

To generate sound from rasterimage, look into Virtual Ans

Ingo

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On 09/14/2016 06:07 PM, Bald Eagle wrote:
> tth <tth### [at] noneinvalid> wrote:
>
>>     Somethink like that ?
>>            http://la.buvette.org/vrac/composite.avi
>
> That is wicked cool.
> A very nice effect that probably took a lot of work to get to work, and likely a
> lot of rendering and post-processing time to make into the full animation.

    No postprocessing (except the green text made with mogrify) but some
    programming (I'm an unixman :) for driving povray.

    This job was made of a number of sequence from the same univers,
    with various angle of view.

    1) I have a text file with the name of sequence and the number of
       frames in that sequence who is transcoded in pov-csv file :

credits		aac	200
descente	desc	250
eglise		egl	300
       reponses.data -> awk -> reponses.text
"credits",           "aac_",   200.0,
"descente",          "desc",   250.0,
"eglise",            "egl_",   300.0,

    2) Drived by the first file, a Perl script make all the picz of
       all the sequences, so I get a bunche of .png with names like
img/desc0000.png
img/desc0001.png
img/desc0002.png

    3) In the file composite.pov, I get the frame number with the
       clock variable, and I load the picz of others seqs with POV
       code like that :
#fopen reponses "reponses.text" read
#while (defined(reponses))
	#read (reponses, anim, v1, v2)
	#declare foo = strcmp(modele, anim);
	#if (foo = 0.0)
		#declare ltr = v1;
		#declare nbr = v2;
	#end
#end
#fclose reponses
                      [...]
#declare idx = int(mod(clock, nbr));
#declare sidx = str(idx, -4, 0);
#declare nompng = concat("img/", ltr, sidx, ".png");

    4) And I can use the pre-computed frame as an image_map
       with a macro like that :

#macro Ecran(image)
box { <-4, 0.07, -3>, <4, -0.07, 3> }
pigment	{
	image_map { png image }
	rotate -x*90
	translate <-0.5, 0, -0.5>
	scale <8, 1, 6>
	}
                [...]

     The macro call :
union	{
	object { Ecran(nompng) }
	object { support }
	}



tTh.

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