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From: amv
Subject: <no subject>
Date: 11 Oct 2015 22:30:00
Message: <web.561ae1fbc23a6d9f2ed086a0@news.povray.org>
Hi, I followed the following website
http://devernay.free.fr/hacks/povray/vlpovutils/

for installing vlpovutils. After installing megapov 1.2.1, I ran the following
commands given in the  above website:

megapov -UV +w320 +h240 +a0.0 +j0.0 +L../data +Itest.pov +Otest.png

megapov -UV +w320 +h240 +a0.0 +j0.0 +L../data +KFI1 +KFF30 +KI0.0 +KF3.0
+Itest_anim.pov +Otest_anim.png

The following error comes up:

Output Options
  Image resolution 320 by 240 (rows 1 to 240, columns 1 to 320).
  Output file: /home/monarch/am/vlpovutils-1.0/results/test_stereo.png, 24 bpp
 PNG
  Graphic display......On  (gamma: 2.2)
  Mosaic preview.......Off
  CPU usage histogram..Off
  Continued trace......Off
Tracing Options
  Quality:  9
  Bounding boxes.......On   Bounding threshold: 3
  Light Buffer.........On
  Vista Buffer.........Off
  Antialiasing.........On  (Method 1, Threshold 0.000, Depth 3, Jitter 0.00)
Animation Options
  Initial Frame:        1  Final Frame:       10
  Frame Step:           1
  Initial Clock:    0.000  Final Clock:    1.000
  Cyclic Animation.....Off  Field render.........Off  Odd lines/frames.....Off

  0:00:00 Processing Frame 1 of 10
  0:00:00 Parsing
File: ../data/test_stereo.pov  Line: 1
Parse Warning: This file was designed for (unofficial) MegaPov version 1.2.  You
 are using version 1.21. Some features may have changed.
File: ../data/test_stereo.pov  Line: 15
Parse Warning: More than one camera in scene. Ignoring previous camera(s).
Floating point exception (core dumped)


In fact, the error comes up with any other pov file. Any help ? Thanks in
advance.


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From: Le Forgeron
Subject: Re: <no subject>
Date: 12 Oct 2015 19:36:05
Message: <561c0ba5$1@news.povray.org>
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Le 12/10/2015 00:26, amv a écrit :
> Hi, I followed the following website 
> http://devernay.free.fr/hacks/povray/vlpovutils/
> 
> for installing vlpovutils. After installing megapov 1.2.1, I ran
> the following commands given in the  above website:
> 
> megapov -UV +w320 +h240 +a0.0 +j0.0 +L../data +Itest.pov
> +Otest.png
> 
> megapov -UV +w320 +h240 +a0.0 +j0.0 +L../data +KFI1 +KFF30 +KI0.0
> +KF3.0 +Itest_anim.pov +Otest_anim.png
> 
> The following error comes up:
> 
> Output Options Image resolution 320 by 240 (rows 1 to 240, columns
> 1 to 320). Output file:
> /home/monarch/am/vlpovutils-1.0/results/test_stereo.png, 24 bpp 
> PNG Graphic display......On  (gamma: 2.2) Mosaic preview.......Off 
> CPU usage histogram..Off Continued trace......Off Tracing Options 
> Quality:  9 Bounding boxes.......On   Bounding threshold: 3 Light
> Buffer.........On Vista Buffer.........Off Antialiasing.........On
> (Method 1, Threshold 0.000, Depth 3, Jitter 0.00) Animation
> Options Initial Frame:        1  Final Frame:       10 Frame Step:
> 1 Initial Clock:    0.000  Final Clock:    1.000 Cyclic
> Animation.....Off  Field render.........Off  Odd
> lines/frames.....Off
> 
> 0:00:00 Processing Frame 1 of 10 0:00:00 Parsing File:
> ../data/test_stereo.pov  Line: 1 Parse Warning: This file was
> designed for (unofficial) MegaPov version 1.2.  You are using
> version 1.21. Some features may have changed. File:
> ../data/test_stereo.pov  Line: 15 Parse Warning: More than one
> camera in scene. Ignoring previous camera(s).

So far so good, (excepted the command is not the one you quoted, I
presumre you reduced the range from 1-30 to 1-10 / 0-3 to 0-1 )

> Floating point exception (core dumped)
> 

Here, I cannot reproduce.
My code is megapov 1.2.1, patched only in png_pov.cpp to avoid
png_write_finish_row() . (no more available with libpng1.2)

So far, I rendered the 30 pictures without issue.

megapov -UV +w320 +h240 +a0.0 +j0.0 +L..
+L/usr/local/share/povray-3.6/include +KFI1 +KFF30 +KI0.0 +KF3.0
+Itest_anim.pov +Otest_anim.png


> 
> In fact, the error comes up with any other pov file. Any help ?
> Thanks in advance.
> 
> 

suggestion, as I cannot reproduce here: reconfigure megapov with
- --enable-debug option, recompile, then before running, allow core dump
("ulimit -c unlimited" might be a friend).
Once crashed, use a debugger on the binary and core file to have an
idea of the location of the problematic operation (usually a division
by 0, maybe something else).



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