visualpython-users

Fwd: [Visualpython-users] boost bug

[Flavio C. <fcc...@gm...>]

Solved. Just copying to the list in cased anyone runs into the same
problem...

---------- Forwarded message ----------
From: Flavio Coelho <fcc...@gm...>
Date: 16/02/2006 14:04
Subject: Re: [Visualpython-users] boost bug
To: Jonathan Brandmeyer <jbr...@ea...>

I actually had an old visual under python2.3/site-packages. I removed it an=
d
recompiled/reinstalled vpython. Curiously,

>
> # ldd /usr/local/lib/python2.4/site-packages/cvisualmodule.so
>         linux-gate.so.1 =3D>  (0xffffe000)
>         libgtk-1.2.so.0 =3D> /usr/lib/libgtk-1.2.so.0 (0xb7ce1000)
>         libgdk-1.2.so.0 =3D> /usr/lib/libgdk- 1.2.so.0 (0xb7ca9000)
>         libgmodule-1.2.so.0 =3D> /usr/lib/libgmodule-1.2.so.0 (0xb7ca6000=
)
>         libdl.so.2 =3D> /lib/libdl.so.2 (0xb7ca2000)
>         libXi.so.6 =3D> /usr/lib/libXi.so.6 (0xb7c9a000)
>         libXext.so.6 =3D> /usr/lib/libXext.so.6 (0xb7c8c000)
>         libX11.so.6 =3D> /usr/lib/libX11.so.6 (0xb7bc0000)
>         libgtkgl.so.5 =3D> /usr/lib/libgtkgl.so.5 (0xb7bbc000)
>         libGL.so.1 =3D> /usr/lib/opengl/nvidia/lib/libGL.so.1 (0xb7b4e000=
)
>         libgthread-1.2.so.0 =3D> /usr/lib/libgthread-1.2.so.0 (0xb7b4b000=
)
>         libpthread.so.0 =3D> /lib/libpthread.so.0 (0xb7af9000)
>         libglib-1.2.so.0 =3D> /usr/lib/libglib-1.2.so.0 (0xb7ad4000)
>         libboost_python.so.1.33.0 =3D> not found
>         libstdc++.so.5 =3D>
> /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libstdc++.so.5 (0xb7a16000)
>         libm.so.6 =3D> /lib/libm.so.6 (0xb79f3000)
>         libc.so.6 =3D> /lib/libc.so.6 (0xb78dd000)
>         libgcc_s.so.1 =3D>
> /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libgcc_s.so.1 (0xb78d5000)
>         /lib/ld-linux.so.2 (0x80000000)
>         libGLU.so.1 =3D> /usr/lib/libGLU.so.1 (0xb7858000)
>         libGLcore.so.1 =3D> /usr/lib/opengl/nvidia/lib/libGLcore.so.1
> (0xb7167000)
>         libnvidia-tls.so.1 =3D> /usr/lib/opengl/nvidia/lib/libnvidia-
> tls.so.1 (0xb7165000)


it still tries fo find the old libboost which is no longer there.

# locate libboost_python
/usr/lib/libboost_python.a
/usr/lib/libboost_python.so
/usr/lib/libboost_python.so.1.33.1


First off, be sure that you built Boost with GCC 3.3.6, and not
> 4.something.


I Used 3.3.6

Second - since cvisualmodule.so linked correctly, but the boost-python
> library cannot be found by the runtime linker, find out where
> Boost.Python was installed and also find out if that location is on the
> library search path.  See ld.so(8) and ldconfig(8).  My hunch is that
> Boost was installed under /usr/local and /usr/local/lib isn't
> in /etc/ld.so.conf.


No, see above.


Finally, since libboost_python.so.1.33.0 cannot be found at all, if this
> extension module was loaded by Python, you should get an ImportError or
> somesuch when you try to "from visual import *".  Make sure you don't
> have an older version of Visual installed somewhere.



interestingly enough, after all these maneuvers made my original problem go
away...

thanks

Fl=E1vio





--
Fl=E1vio Code=E7o Coelho
registered Linux user # 386432
---------------------------
"Laws are like sausages. It's better not to see them being made."
Otto von Bismark


--
Fl=E1vio Code=E7o Coelho
registered Linux user # 386432
---------------------------
"Laws are like sausages. It's better not to see them being made."
Otto von Bismark

[Visualpython-users] Version 3.2.8

[Bruce S. <Bru...@nc...>]

2006-02-14 Version 3.2.8: Corrects a bug in histograms (visual.graph); 
didn't handle negative x values. Corrects a missing reference to GLU for 
Linux installers.

Bruce Sherwood

Re: [Visualpython-users] Vpython and Blender Object ?

[Jonathan B. <jbr...@ea...>]

On Tue, 2006-02-14 at 08:44 +0100, leau2001 wrote:
> Hello all,
> 
> Just want to know if is it possible to use Blender Object with Vpython.
> 
> For exemple to make better looks for slider, or button... what do you 
> think ?

Your best bet would be to write a parser that reads in a .blend file and
creates a faces object from it.  If you manage to do this, we would be
happy to post the code to vpython.org

-Jonathan

Re: [Visualpython-users] help requested on gluErrorString error

[Jonathan B. <jbr...@ea...>]

Thanks for the feedback.  We will push out a new release that
incorporates this fix Real Soon Now (TM).

-Jonathan

On Tue, 2006-02-14 at 13:01 -0600, Brad Miller wrote:
> I was getting the exact same problem under SuSE 9.3 this morning.
> I added the -lGLU as you suggested and that seems to have solved the  
> problem for me.
> 
> Thanks!
> 
> Brad
> 
> On Feb 13, 2006, at 9:46 AM, Jonathan Brandmeyer wrote:
> 
> > On Sun, 2006-02-12 at 23:57 +0100, Ruben Huele wrote:
> >> Dear Madam, Sir,
> >>
> >> As far as I am aware, I followed all the directions on
> >> http://vpython.org/ and got the program installed and running indeed
> >> under Suse 10.0. However, trying the bounce.py example, I got an  
> >> import
> >> error message on gluErrorString. Attached. please find the  
> >> config.log,
> >> the build.log and the output in Idle from running bounce.py.
> >
> > Please add -lGLU at the end of src/Makefile line 49 and tell me if  
> > that
> > helps.
> >
> > -Jonathan
> >
> >
> >
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Re: [Visualpython-users] boost bug

[Jonathan B. <jbr...@ea...>]

On Tue, 2006-02-14 at 12:20 -0200, Flavio Coelho wrote:
> Hi Jonathan,
> 
> I ran the ldd as you suggested and got nothing in return.
> 
> then I remove the grep and got this:
> 

>         libboost_python.so.1.33.0 => not found
>         libstdc++.so.5
> => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/libstdc++.so.5
> (0xb79f4000) 

First off, be sure that you built Boost with GCC 3.3.6, and not
4.something.

Second - since cvisualmodule.so linked correctly, but the boost-python
library cannot be found by the runtime linker, find out where
Boost.Python was installed and also find out if that location is on the
library search path.  See ld.so(8) and ldconfig(8).  My hunch is that
Boost was installed under /usr/local and /usr/local/lib isn't
in /etc/ld.so.conf.

Finally, since libboost_python.so.1.33.0 cannot be found at all, if this
extension module was loaded by Python, you should get an ImportError or
somesuch when you try to "from visual import *".  Make sure you don't
have an older version of Visual installed somewhere.

-Jonathan

Re: [Visualpython-users] help requested on gluErrorString error

[Brad M. <bm...@lu...>]

I was getting the exact same problem under SuSE 9.3 this morning.
I added the -lGLU as you suggested and that seems to have solved the  
problem for me.

Thanks!

Brad

On Feb 13, 2006, at 9:46 AM, Jonathan Brandmeyer wrote:

> On Sun, 2006-02-12 at 23:57 +0100, Ruben Huele wrote:
>> Dear Madam, Sir,
>>
>> As far as I am aware, I followed all the directions on
>> http://vpython.org/ and got the program installed and running indeed
>> under Suse 10.0. However, trying the bounce.py example, I got an  
>> import
>> error message on gluErrorString. Attached. please find the  
>> config.log,
>> the build.log and the output in Idle from running bounce.py.
>
> Please add -lGLU at the end of src/Makefile line 49 and tell me if  
> that
> helps.
>
> -Jonathan
>
>
>
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Re: [Visualpython-users] new attibute for sphere, sphere.name ? is it possible ?

[Jonathan B. <jbr...@ea...>]

On Mon, 2006-02-13 at 16:53 +0100, leau2001 wrote:
> Hi all,
> 
> Is it not possible to make sphere have a new option : name
> 
> I know we uses name= sphere .....
> 
> But i'd prefer sphere ( option1..., .., name='texte')
> 
> i explain

Yes, in a sense.  When you instantiate any VPython renderable object,
any extra parameters you provide will be automatically added as
attributes of whatever you are creating.  So:

>>> x = sphere( name='texte')
>>> print x.name
'texte'

> I made 4 sphere, and i want to see sphere.name on a label when i click 
> on a sphere.

See also the display.getclick(), display.getevent() functions.  These
return a reference to the nearest (closest to the screen) VPython object
that was clicked (if any was below the mouse cursor).  You can then have
a label associated with each sphere, and control it's visibility when
you process the event.  If you wanted to always move the label and
sphere together around the screen, you can easily wrap them together in
a common frame.

HTH,
-Jonathan

Re: [Visualpython-users] make failure

[Bruce S. <Bru...@nc...>]

I haven't had a chance to look at the files you sent, but I can address 
point 1 in your question. In INSTALL.txt you will find the following:

If you have multiple versions of Python installed, and the one named 
'python' that is first on your PATH (identified with `which python`) is 
not the one you want to build Visual for, specify the correct 
interpreter by setting the PYTHON environment variable to the desired 
interpreter's full path.

And on the Linux download page at vpython.org this point is also made:

If you want to use a different version of Python than the one found with 
"which python", or (b) is not appropriate, specify both the particular 
Python and where to install Visual:
    PYTHON=/somewhere1/bin/python ../visual-x.x.x/configure 
--prefix=/somewhere2
If "somewhere1" and "somewhere2" are different, you must also add the 
"somewhere2" directory to Python's module search path. For details, at 
www.python.org read section 4.1 (Modifying Python's Search Path) in the 
section Installing Python Modules of the Python 2.3 on-line documentation.

The key point is that --prefix governs where you put stuff, while PYTHON 
refers to the path to your Python, which are two different things (at 
least in principle).

Bruce Sherwood

James Foadi wrote:
> I have had, so far, 2 problems installing VPython.
> 
> 1) During the configure stage, although I run the configure script as:
> 
>  ./configure --prefix=/home/james/binPYTHON
> 
> given that I hold a local version of Python, the script found 
> $PYTHON=/usr/bin/python, which is the root version. I had to (manually) 
> insert PYTHON=/home/james/binPYTHON/bin/python  to proceed with correct 
> configuration. Without it the configure script was telling me that it was 
> unable to find Numeric and Numarray.
> 
> 2) For the compilation error (which is beyond my ability to repair), please 
> look at the attached files
> 
> Thank you very much fort your help
> 
> J

[Visualpython-users] make failure

[James F. <fo...@ys...>]

I have had, so far, 2 problems installing VPython.

1) During the configure stage, although I run the configure script as:

 ./configure --prefix=/home/james/binPYTHON

given that I hold a local version of Python, the script found 
$PYTHON=/usr/bin/python, which is the root version. I had to (manually) 
insert PYTHON=/home/james/binPYTHON/bin/python  to proceed with correct 
configuration. Without it the configure script was telling me that it was 
unable to find Numeric and Numarray.

2) For the compilation error (which is beyond my ability to repair), please 
look at the attached files

Thank you very much fort your help

J
-- 
Dr James Foadi PhD
York Structural Biology Laboratory (YSBL)
Department of Chemistry
University of York
Heslington
York YO10 5YW
UK

[Visualpython-users] Vpython and Blender Object ?

[leau2001 <lea...@fr...>]

Hello all,

Just want to know if is it possible to use Blender Object with Vpython.

For exemple to make better looks for slider, or button... what do you 
think ?

lo

Re: [Visualpython-users] boost bug

[Jonathan B. <jbr...@ea...>]

On Mon, 2006-01-30 at 10:40 -0200, Flavio Coelho wrote:
> 
> Hi,
> 
> which version of boost do you recomend? I am running vpython 3.2.6
> with boost 1.33.0 and I am getting the following error when I
> instantiate a gcurve plot:

Sorry it took so long for me to take a look at this.  I'm running the
latest VPython, with Boost 1.33.1, Python 2.4.2, and gcc 4.0.2 (Debian
4.0.2-8) with no problems.  I did see this error on my machine a long
time ago and I think it was due to either building two parts of the
system with different versions of G++ or different builds of Python.

Can you run
$ ldd /usr/local/lib/python2.4/site-packages/cvisualmodule.so | grep
"python\|libstdc"

The output should include only one libpython..., only one
libboost_python..., and only one libstdc++...

-Jonathan

Re: [Visualpython-users] new attibute for sphere, sphere.name ? is it possible ?

[Jonathan B. <jbr...@ea...>]

On Mon, 2006-02-13 at 18:03 +0100, leau2001 wrote:
> Yes it's works good,
> 
> But if you use a routine to make sphere automaticly, you can't do that
> for all your created sphere, if you have juste 5 it's ok, but with 1000
> it's hard...

Read up on creating you own functions in the Python tutorial.

-Jonathan

> Have a look on my program to see what i mean
> 
> but may be it's just a programmation problem... i m newbie on python ;)
> 
> lo
> 

Re: [Visualpython-users] new attibute for sphere, sphere.name ? is it possible ?

[leau2001 <lea...@fr...>]

Yes it's works good,

But if you use a routine to make sphere automaticly, you can't do that
for all your created sphere, if you have juste 5 it's ok, but with 1000
it's hard...

Have a look on my program to see what i mean

but may be it's just a programmation problem... i m newbie on python ;)

lo

Re: [Visualpython-users] new attibute for sphere, sphere.name ? is it possible ?

[Bruce S. <Bru...@nc...>]

I wouldn't favor that, as the effect is easily achievable using label. 
You can even associate the label with the sphere. If you run the 
atttached routine you can click a sphere and see its name, click again 
to remove the name.

Bruce Sherwood

leau2001 wrote:
> Hi all,
> 
> Is it not possible to make sphere have a new option : name
> 
> I know we uses name= sphere .....
> 
> But i'd prefer sphere ( option1..., .., name='texte')
> 
> i explain
> 
> I made 4 sphere, and i want to see sphere.name on a label when i click 
> on a sphere.
> 
> thx

[Visualpython-users] New attibute for sphere, sphere.name ? is it possible ?

[leau2001 <lea...@fr...>]

Hi all,

Is it not possible to make sphere have a new option : name

I know we uses name= sphere .....

But i'd prefer sphere ( option1..., .., name='texte')

i explain

I made 4 sphere, and i want to see sphere.name on a label when i click
on a sphere.

thx

Re: [Visualpython-users] new attibute for sphere, sphere.name ? is it possible ?

[leau2001 <lea...@fr...>]

Hi all,

Is it not possible to make sphere have a new option : name

I know we uses name= sphere .....

But i'd prefer sphere ( option1..., .., name='texte')

i explain

I made 4 sphere, and i want to see sphere.name on a label when i click 
on a sphere.

thx

Re: [Visualpython-users] help requested on gluErrorString error

[Jonathan B. <jbr...@ea...>]

On Sun, 2006-02-12 at 23:57 +0100, Ruben Huele wrote:
> Dear Madam, Sir,
> 
> As far as I am aware, I followed all the directions on
> http://vpython.org/ and got the program installed and running indeed
> under Suse 10.0. However, trying the bounce.py example, I got an import
> error message on gluErrorString. Attached. please find the config.log,
> the build.log and the output in Idle from running bounce.py.

Please add -lGLU at the end of src/Makefile line 49 and tell me if that
helps.

-Jonathan

[Visualpython-users] graphing dots

[Dr P H B. <P.H...@bh...>]

apologies

my program NR3...  requires my utils module, which is attached

Peter

from Dr P H Borcherds 
reply to: p.h...@bh...
telephone (+44) 121 475 3029

[Visualpython-users] VPython 3.2.7

[Bruce S. <Bru...@nc...>]

New VPython 3.2.7 for Windows and Linux (but not the Mac, which I don't 
yet know how to do). From the "Recent Developments" section of vpython.org:

2006-02-12 Version 3.2.7: Corrects a bug in sliders (visual.controls) in 
the case that the minimum value is nonzero. Improves the documentation 
on dragging objects with the mouse.

Bruce Sherwood

[Visualpython-users] help requested on gluErrorString error

[Ruben H. <ki...@xs...>]

Dear Madam, Sir,

As far as I am aware, I followed all the directions on
http://vpython.org/ and got the program installed and running indeed
under Suse 10.0. However, trying the bounce.py example, I got an import
error message on gluErrorString. Attached. please find the config.log,
the build.log and the output in Idle from running bounce.py.

Any help would be greatly appreciated.

Best Wishes,

Ruben Huele
Amsterdam
The Netherlands
ki...@xs...

[Visualpython-users] controls bug

[Bruce S. <Bru...@nc...>]

Leau gave a very clear report of a bug with sliders (in 
visual.controls), for which I'm grateful. It turned out that the 
controls module never had treated a nonzero minimum correctly for 
sliders. I attach a corrected version (and I'll update VPython 
installers soon). On Windows, this goes in 
C:\Python24\Lib\site-packages\visual.

Bruce Sherwood

[Visualpython-users] graphing dots

[Bruce S. <Bru...@nc...>]

Laney Mills wrote:

Hi Bruce,  Gary has helped me with a couple of Python questions.  Since 
you use VPython a lot, do you know how to adjust the dot size for 
vpython 2d plots.  I want to make the Mandelbrot set, which needs the 
highest resolution I can get, one pixel per dot if possible.  I think 
the control of dot size is done deep down in some library function 
called by vpython.  I was just hoping you had seen how to make that 
happen.  From within vpython, the minium dot size is much larger than 
one pixel.  Otherwise, vpython is perfect for the job.

Thanks,

Laney Mills,
College of Charleston

------------------------------
I replied:

Unfortunately there isn't currently any simple way to do that. The 
module in question is graph.py (invoked by importing visual.graph), 
which I wrote (on Windows, it is in 
C:\Python24\Lib\site-packages\visual). For dots it uses a lower-case 
text "o" because a graph typically has different x and y scales, so any 
of the standard Visual objects wouldn't be dot-like, including a small 
sphere (which would typically end up being an ellipsoid).

I would however think that for something like the Mandelbrot set there's 
no good reason to use visual.graph at all; just use a standard VPython 
window and plot very small spheres (though in any case you may run into 
problems rendering a very large number of objects).

If for some reason you want to use visual.graph, you could modify it to 
plot small spheres instead of o's, since you may well have uniform axes 
(same x and y scales).

Bruce Sherwood

(And later Mills raised the possibility of using the Python Imaging 
Library, which might indeed be the appropriate tool for this project.)

Re: [Visualpython-users] label object need a new option : visible=1 or no visible=0, is it possible or not ?

[leau2001 <lea...@fr...>]

Oh !! thx, i haven't see it for the label objet... it's not in the label=20
notice ;)

lo

Bruce Sherwood a =E9crit :
> All Visual objects have the attribute "visible". Just set it to 0 (or=20
> False) for invisible, 1 (or True) for visible.
>
> Bruce Sherwood
>
> leau2001 wrote:
>
>> Hi,
>>
>> Thx for slider new issue it's work good now...
>>
>> I need a new function in label, visible and no visible. is it possible=
 ?
>>
>> I want to show label if my mouse click on a sphere and no label when m=
y
>> mouse click outside the sphere...
>>
>> thx
>>
>> lo
>>
>
>
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>
>
>

Re: [Visualpython-users] label object need a new option : visible=1 or no visible=0, is it possible or not ?

[Bruce S. <Bru...@nc...>]

All Visual objects have the attribute "visible". Just set it to 0 (or 
False) for invisible, 1 (or True) for visible.

Bruce Sherwood

leau2001 wrote:

> Hi,
>
> Thx for slider new issue it's work good now...
>
> I need a new function in label, visible and no visible. is it possible ?
>
> I want to show label if my mouse click on a sphere and no label when my
> mouse click outside the sphere...
>
> thx
>
> lo
>

[Visualpython-users] Re: C++ and VPython

[John B. <jb...@te...>]

Hi, Bruce and all;
Thanks for all the help you've given me in the past, and thanks _especially_
for ' scene.stereo='crosseyed' '.

In order to speed up my program, I'm recoding it in C++ (and estimating
about 40 times speed increase over Python), which I know very little about
(but am slowly fighting my way through the molasses...).

VPython gives me my views into my Python program's calculation space, and I
can watch my points packing themselves.  To do the same with C++ is going to
take _way_ more knowledge of C++, Windows (microsoft's) and probably OpebGL,
than I'm likely to obtain in my lifetime (which by now is not what it was
when I was young (*g*)).

The program itself is mostly vector math, which I'm fighting into submission
now, and since I've got all the rest of the needed functions (randomizings,
file readings/writings, database makings (dynamic arrays versus lists and
dictionaries etc.) and user input/output handled in the C++ version, all I'm
going to be facing soon is visibility into my calculation space.

Hence the query: is there any way to interface my C++ _calculation_ system,
with VPython's OpenGL operations or with VPython itself, so that I can use
(a modified version of) what I already have with VPython, to do the
lookings-in-to what the C++ calculation program is doing?

IOW, can I call out from within the C++ program, to the VPython
visualization system?

Thanks!

Peace
JB
jb...@te...
Web: http://tetrahedraverse.com