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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] none invalid> 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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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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