visualpython-users

[Visualpython-users] graph-mouse.py

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

In the contributed section of vpython.org there is now a program 
graph-mouse.py which lets you drag a mouse over a graph with cross-hairs 
and a label showing the numerical value at the center of the 
cross-hairs. Eventually this should be an automatic capability of 
graphs, which means a closer connection between visual.graph and Visual, 
to get mouse events processed without the programmer having to look for 
them.

Bruce Sherwood

Re: [Visualpython-users] clear the graph object

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

That should free up memory eventually, when Python does garbage=20
collection. Python keeps a reference count on all objects (and Visual=20
adds another one if the object is visible, because the human user=20
constitutes another reference to the object, which is why you have to=20
make the object invisible before deleting it). When the reference count=20
goes to zero, Python can delete the data from memory., At least that's=20
the way it's SUPPOSED to work.

Bruce

Jos=E9 Antonio Mart=EDn H wrote:
> Hi, by the way what happends with this code ?
> that is, is the memory freed after each initialization ?
>
> self.Gtrajectory =3D gcurve(gdisplay=3Dself.clwindow,color=3Dcolor.yell=
ow)
>
> do some plot operation on  self.Gtrajectory
>
>
> self.Gtrajectory.gcurve.visible =3D False
> del self.Gtrajectory
> self.Gtrajectory =3D gcurve(gdisplay=3Dself.clwindow,color=3Dcolor.yell=
ow)
>
>
> This code cleans the graphic object gcurve but i am not sure that the=20
> memory is freed
>
> It this code cleaning the memory too ?
>
> Is there any other way of cleaning a gcurve object ?
>
> Kind regards.
> jose
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> Jose Antonio Martin H.
> Departamento de Sistemas Inform=E1ticos y Computaci=F3n
> Facultad de Inform=E1tica
> Universidad Complutense de Madrid
> Ciudad universitaria, 28040 Madrid
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>

Re: [Visualpython-users] clear the graph object

[<jam...@fd...>]

Hi, by the way what happends with this code ?
that is, is the memory freed after each initialization ?

self.Gtrajectory = gcurve(gdisplay=self.clwindow,color=color.yellow)

do some plot operation on  self.Gtrajectory


self.Gtrajectory.gcurve.visible = False
del self.Gtrajectory
self.Gtrajectory = gcurve(gdisplay=self.clwindow,color=color.yellow)


This code cleans the graphic object gcurve but i am not sure that the memory 
is freed

It this code cleaning the memory too ?

Is there any other way of cleaning a gcurve object ?

Kind regards.
jose

============================================
Jose Antonio Martin H.
Departamento de Sistemas Informáticos y Computación
Facultad de Informática
Universidad Complutense de Madrid
Ciudad universitaria, 28040 Madrid
============================================

Re: [Visualpython-users] clear the gdots object

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

In Visual 3 which you're using, it was necessary to implement gdots=20
using a list of label statements, which was very slow, and the only way=20
to get rid of the dots is to do what you did.

In the beta Visual 4 (see vpython.org > Recent developments), gdots is=20
implemented as a single "points" object, and you can get rid of all the=20
dots by saying simply "mygdots.dots.pos =3D []" (assuming your gdots name=
=20
was "mygdots").

Bruce Sherwood

Jos=E9 Antonio Mart=EDn H wrote:
> Hi.
>
> Please, is there any body working on a native C method to clean the gdo=
ts=20
> object ?
>
> I am currently doing:
>
> for dot funct3.dots:
>     dot.visible=3DFalse
>
>  funct3.dots=3D[]
>
>
> but this is very  time consuming for many dots.
>
> Is there a native C way or a built in way of doing this ?
>
> thanks.
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> Jose Antonio Martin H.
> Departamento de Sistemas Inform=E1ticos y Computaci=F3n
> Facultad de Inform=E1tica
> Universidad Complutense de Madrid
> Ciudad universitaria, 28040 Madrid
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
>
> -----------------------------------------------------------------------=
--
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share=
 your
> opinions on IT & business topics through brief surveys - and earn cash
> http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D=
DEVDEV
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>  =20

[Visualpython-users] Serial port communication

[Chris F. <cf...@th...>]

Are you using DOS? Windows and unix variants control access to the hardware. The DOS port of python may provide for access to hardware ports, but the standard distribution does not. What is this line of code supposed to do? A little context would go along way!

If you're moving from a dos/pascal environment to something more recent, then you will have to rewrite all the serial routines, which may or may not be difficult, depending on how your code in structured and how much expertise is available. Since you are porting from pascal already, this may be less of an issue.

Running VPython in a DOS environment might work, since the python port to DOS seems to have some opengl and numeric support, but it will probably take a recompile.

Chris

[Visualpython-users] Serial port communication

[Poul R. <Pou...@sk...>]

I have an old pascal program which makes me able to communicate with my 12
bits ADC.
Now I would like to make python version of the program and I have
installed the python serial module.
But can someone tell me how to translate the following pascal code line to
python (well, this is not really a VPython issue, but it might happen that
some VPython user knows about pyserial)?

Port(584):=($FE AND Port(584))

Yours,
Poul Riis

[Visualpython-users] clear the gdots object

[<jam...@fd...>]

Hi.

Please, is there any body working on a native C method to clean the gdots 
object ?

I am currently doing:

for dot funct3.dots:
    dot.visible=False

 funct3.dots=[]


but this is very  time consuming for many dots.

Is there a native C way or a built in way of doing this ?

thanks.
============================================
Jose Antonio Martin H.
Departamento de Sistemas Informáticos y Computación
Facultad de Informática
Universidad Complutense de Madrid
Ciudad universitaria, 28040 Madrid
============================================

[Visualpython-users] 4.beta14

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

4.beta14 for Windows and Linux corrects some minor errors in the 
previous release (has to do with setting up lights in a display). See 
"Recent developments" at vpython.org.

Bruce Sherwood

Re: [Visualpython-users] Greek text

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

Here's a specific example (I hadn't realized this worked with the beta 
version on Linux):

from visual import *
label(text=u'\u03a3') # displays capital sigma

But this isn't currently supported on the beta version for Windows.

Bruce Sherwood

Jonathan Brandmeyer wrote:
> Of note, the Linux 4.betaX releases should support UTF strings by
> default in labels.
> 
> -Jonathan
> 
> On Fri, 2006-12-29 at 10:14 -0700, Bruce Sherwood wrote:
> 
>>In the beta version of VPython (see the Recent developments section of 
>>vpython.org) you can do the following:
>>
>>label(text="S", font="symbol") # displays capital sigma
>>
>>Until this beta version you couldn't specify a font for a label.
>>
>>This is a limited capability which doesn't apply (for example) to window 
>>titles. It also doesn't immediately apply to labels in visual.graph or 
>>visual.controls, but those modules are pure Python code, so one could 
>>easily introduce a font option into those labels.
>>
>>Bruce Sherwood
>>
>>-------------------------------------------------------------------------
>>Take Surveys. Earn Cash. Influence the Future of IT
>>Join SourceForge.net's Techsay panel and you'll get the chance to share your
>>opinions on IT & business topics through brief surveys - and earn cash
>>http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
>>_______________________________________________
>>Visualpython-users mailing list
>>Vis...@li...
>>https://lists.sourceforge.net/lists/listinfo/visualpython-users
> 
> 

Re: [Visualpython-users] Greek text

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

Of note, the Linux 4.betaX releases should support UTF strings by
default in labels.

-Jonathan

On Fri, 2006-12-29 at 10:14 -0700, Bruce Sherwood wrote:
> In the beta version of VPython (see the Recent developments section of 
> vpython.org) you can do the following:
> 
> label(text="S", font="symbol") # displays capital sigma
> 
> Until this beta version you couldn't specify a font for a label.
> 
> This is a limited capability which doesn't apply (for example) to window 
> titles. It also doesn't immediately apply to labels in visual.graph or 
> visual.controls, but those modules are pure Python code, so one could 
> easily introduce a font option into those labels.
> 
> Bruce Sherwood
> 
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys - and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

[Visualpython-users] Greek text

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

In the beta version of VPython (see the Recent developments section of 
vpython.org) you can do the following:

label(text="S", font="symbol") # displays capital sigma

Until this beta version you couldn't specify a font for a label.

This is a limited capability which doesn't apply (for example) to window 
titles. It also doesn't immediately apply to labels in visual.graph or 
visual.controls, but those modules are pure Python code, so one could 
easily introduce a font option into those labels.

Bruce Sherwood

[Visualpython-users] Greek letters in graphical windows

[Poul R. <Pou...@sk...>]

I know how to print greek letters in python, for instance
print u"\u03B1"
gives an alpha.

But how can I print greek letters in a VPython graphical window? The
following suggestion doesn't work:
sliderWindow = controls(title=u"\u03B1",  x=0, y=0, width=400, height=300,
range=100)

Yours,
Poul Riis

Re: [Visualpython-users] visual Python 3.2.9 compilation error

[Martin C. <cos...@wa...>]

Giancarlo Bassi wrote:
> I got an error message without achieving the correct compilation
> of visual Python 3.2.9
> 
> So I'm asking you some help to understand what went wrong.
> 
> Compiler g++ says it doesn't find libboost_pyhton
> 
> but I have /usr/lib/libboost_pyhton.so.1.32 linked to
> libboost_pyhton.so.1.32.0
> 
> I copied it from a file from Mandriva distribution.

If you made this symlink by hand, then I think you need to

- make another one named "libboost_python.so"
- pay attention to the orthography of "python".

-- 
Martin

[Visualpython-users] visual Python 3.2.9 compilation error

[Giancarlo B. <g....@ip...>]

I got an error message without achieving the correct compilation
of visual Python 3.2.9

So I'm asking you some help to understand what went wrong.

Compiler g++ says it doesn't find libboost_pyhton

but I have /usr/lib/libboost_pyhton.so.1.32 linked to
libboost_pyhton.so.1.32.0

I copied it from a file from Mandriva distribution.

Thanks a lot for any reply.

After loooooong compilation time of visual pyton 3.2.9
I got this message:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3
-DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2
-I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include
-I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2
-ftemplate-depth-120 -g0 -c -o vcache.lo vcache.cpp

  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include
-I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2
-I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include
-D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c
vcache.cpp  -fPIC -DPIC -o .libs/vcache.o

/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3
-DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2
-I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include
-I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2
-ftemplate-depth-120 -g0 -c -o cylmodel.lo cylmodel.cpp

  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include
-I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2
-I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2
-I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include
-D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include
-I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c
cylmodel.cpp  -fPIC -DPIC -o .libs/cylmodel.o

/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c -o num_util_impl_numeric.lo num_util_impl_numeric.cpp
  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c num_util_impl_numeric.cpp  -fPIC -DPIC -o .libs/num_util_impl_numeric.o
/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c -o num_util_impl_numarray.lo num_util_impl_numarray.cpp
  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c num_util_impl_numarray.cpp  -fPIC -DPIC -o .libs/num_util_impl_numarray.o
/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c -o glcontext.lo glcontext.cpp
  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c glcontext.cpp  -fPIC -DPIC -o .libs/glcontext.o
/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c -o platlinux.lo platlinux.cpp
  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c platlinux.cpp  -fPIC -DPIC -o .libs/platlinux.o
/bin/sh ..//libtool --mode=compile g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c -o xgl.lo xgl.cpp
  g++ -I/usr/local/include/python2.3 -DHAVE_CONFIG_H -I../include -I..//include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -D_REENTRANT -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/include/gtk-1.2 -I/usr/include/glib-1.2 -I/usr/lib/glib/include -I/usr/X11R6/include -fpic -DPIC -g -O2 -ftemplate-depth-120 -g0 -c xgl.cpp  -fPIC -DPIC -o .libs/xgl.o
/bin/sh ..//libtool --mode=link g++ arrow.lo axial.lo box.lo color.lo cone.lo convex.lo curve.lo cvisualmodule.lo cylinder.lo display.lo displaylist.lo ellipsoid.lo exceptions.lo num_util.lo scalar_array.lo vector_array.lo slice.lo sphmodel.lo faceset.lo frame.lo gldevice.lo kbobject.lo light.lo label.lo mouseobject.lo prim.lo vector.lo pyramid.lo rate.lo ring.lo sphere.lo tmatrix.lo vcache.lo cylmodel.lo num_util_impl_numeric.lo num_util_impl_numarray.lo glcontext.lo platlinux.lo xgl.lo -L/usr/lib -L/usr/X11R6/lib -lgtk -lgdk -rdynamic -lgmodule -lglib -ldl -lXext -lX11 -lm -lgtkgl -lGL -lGLU -lgthread -lpthread -lglib -lboost_python -lstdc++ -module -version-info 1:0:0 -o cvisualmodule.la -Wl,--version-script=./linux-symbols.map -rpath /usr/local/lib/python2.3/site-packages/cvisualmodule.la

g++ -shared -nostdlib /usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../crti.o
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/crtbeginS.o  .libs/arrow.o
.libs/axial.o .libs/box.o .libs/color.o .libs/cone.o .libs/convex.o
.libs/curve.o .libs/cvisualmodule.o .libs/cylinder.o .libs/display.o
.libs/displaylist.o .libs/ellipsoid.o .libs/exceptions.o .libs/num_util.o
.libs/scalar_array.o .libs/vector_array.o .libs/slice.o .libs/sphmodel.o
.libs/faceset.o .libs/frame.o .libs/gldevice.o .libs/kbobject.o .libs/light.o
.libs/label.o .libs/mouseobject.o .libs/prim.o .libs/vector.o .libs/pyramid.o
.libs/rate.o .libs/ring.o .libs/sphere.o .libs/tmatrix.o .libs/vcache.o
.libs/cylmodel.o .libs/num_util_impl_numeric.o .libs/num_util_impl_numarray.o
.libs/glcontext.o .libs/platlinux.o .libs/xgl.o
-Wl,--rpath -Wl,/usr/lib/. -Wl,--rpath -Wl,/usr/lib/. -L/usr/lib
-L/usr/X11R6/lib /usr/lib/libgtk.so /usr/lib/libgdk.so
/usr/lib/libgmodule.so -ldl -lXext -lX11 -lgtkgl -lGL -lGLU
/usr/lib/libgthread.so -lpthread /usr/lib/libglib.so -lboost_python
-L/usr/lib/gcc-lib/i486-slackware-linux/3.3.4
-L/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../../i486-slackware-linux/lib
-L/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../.. /usr/lib/./libstdc++.so
-lm -lc -lgcc_s /usr/lib/gcc-lib/i486-slackware-linux/3.3.4/crtendS.o
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../crtn.o
-Wl,--version-script=./linux-symbols.map -Wl,-soname -Wl,cvisualmodule.so.1
-o .libs/cvisualmodule.so.1.0.0
/usr/lib/gcc-lib/i486-slackware-linux/3.3.4/../../../../i486-slackware-linux/bin/ld:

cannot find -lboost_python
collect2: ld returned 1 exit status
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


 		GB




---
"I'm no Pawn, I'm Donald Duck ! "
        -- Donald in MathMagic Land

http://g-bassi.wikidot.com

[Visualpython-users] 4.beta13

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

2006-12-25 4.beta13 for Windows and Linux: Arthur Siegel improvement to 
rendering in the presence of a large number of frames; new stonehenge.py 
to demonstrate transparency and photo textures; corrections/improvements 
to documentation of lights and vector rotation; fix to lighting, which 
among other things fixes problems with lighting of controls (buttons, 
sliders, etc.); corrections in the summary of Visual 4 in the 
documentation of texture creation.

Bruce Sherwood

[Visualpython-users] minor fixes to the current beta version

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

Two minor fixes which apply to the current beta version and which of 
course will be incorporated in the next release:

1) Attached is a corrected ui.py (now in CVS) which replaces the one 
which in Windows is found at C:\Python25\Lib\site-packages\visual\ui.py. 
This fixes a problem with the lighting of controls (buttons, sliders) 
but more generally fixes a problem with any older program that specifies 
special lighting. The bug was that in creating a display, default lights 
were set without checking to see whether the program was specifying its 
own lights.

2) Peter Borcherds kindly points out that in the summary of new features 
for the beta version the sample code for making a simple checkerboard 
texture contains mistakes in specifying the numerical type of arrays, 
now that we're using numpy rather than Numeric. This has been corrected 
in the documentation at vpython.org > Recent developments.

Bruce Sherwood

[Visualpython-users] 4.beta12 for Windows and Linux

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

New 4.beta12 for Windows and Linux: Corrects width of arrows, 
positioning of cones, and compatibility of old and new formats for 
specifying lighting. See the Recent developments section at vpython.org.

The major problems remaining are problems on Windows, where details of 
the graphics card and graphics driver matter a great deal. For example, 
I was experiencing some programs locking up, not rendering new displays, 
until I updated the graphics driver on my desktop machine. On my laptop, 
with simple Intel graphics, some programs work only if I turn off 
graphics acceleration, but in that case other programs don't run at all. 
Yet on that same dual-boot laptop all programs run fine on Ubuntu Linux.

Another Windows problem is that sometimes dragging is quite sluggish. 
For example, in the example program crossproduct.py, dragging the arrow 
is very sluggish, with the tip of the arrow lagging far behind the mouse 
location. But on Linux the dragging is completely smooth, and the mouse 
doesn't get ahead of the arrow tip. So something quite fundamental is 
wrong with the Windows rendering and mouse handling. Arthur Siegel is 
struggling mightily to understand and deal with these issues, with 
advice from Jonathan Brandmeyer. But this seems a VERY tough problem to 
solve.

Bruce Sherwood

Re: [Visualpython-users] Message loops

[Dethe E. <de...@li...>]

Here are some starting points for finding the answer:

Python Socket Programming Howto:
http://www.amk.ca/python/howto/sockets/

Recipe using socket timeout
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/425210

Socket module documentation
http://docs.python.org/lib/module-socket.html

HTH

--Dethe


On 17-Dec-06, at 4:32 AM, Chris Lyon wrote:

> Is there any recommended way of constructing message loops using  
> visual
> python and controls that could best run whilst awaiting a possibly
> terminal reply from a socket?
>
>
>
> I'm populating labels from one-wire sensors and the little darlings  
> tend
> to be a little taciturn when you drop them in water, and they  
> forget to
> answer back...
>
>
> -- 
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.409 / Virus Database: 268.15.22/590 - Release Date:  
> 16/12/2006
>
>
> ---------------------------------------------------------------------- 
> ---
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to  
> share your
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> page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
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> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

This past week, everyday when I opened my Wall Street Journal, I was  
met with a full page ad from Microsoft. This ad was dominated by  
three simple words "Protect your PC." This strikes me as something  
akin to the Saudi government running ads in the New York Times in mid- 
September of 2001 saying "Protect your Tall Buildings." --Russ McGuire

Re: [Visualpython-users] Message loops

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

You're basically asking a Python programming question, not a question 
about Visual. You'll probably need to turn to a different, Python 
mailing list for help.

Bruce Sherwood

Chris Lyon wrote:
> Is there any recommended way of constructing message loops using visual 
> python and controls that could best run whilst awaiting a possibly 
> terminal reply from a socket?
>
>
>
> I'm populating labels from one-wire sensors and the little darlings tend 
> to be a little taciturn when you drop them in water, and they forget to 
> answer back...
>
>
>   

[Visualpython-users] Message loops

[Chris L. <chr...@sp...>]

Is there any recommended way of constructing message loops using visual 
python and controls that could best run whilst awaiting a possibly 
terminal reply from a socket?



I'm populating labels from one-wire sensors and the little darlings tend 
to be a little taciturn when you drop them in water, and they forget to 
answer back...


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.409 / Virus Database: 268.15.22/590 - Release Date: 16/12/2006

Re: [Visualpython-users] Can a helix join a frame?

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

Thanks much for this report. I've checked into CVS a fix to 
primitives.py, which I've also attached. On Windows, just replace the 
version in C:\Python25\Lib\site-packages\visual.

Bruce Sherwood

Chris Lyon wrote:
> Tried this:
>
> solar_install = frame()
>
> status_sphere=sphere(frame = solar_install, radius = 4, pos = 
> (10,10,10), opacity= .4,color = (.8,.6,0))
>
> spring = helix(frame = solar_install, pos=(0,2,1), axis=(5,0,0), radius=0.5)
>
>
> Got:
>
> Traceback (most recent call last):
>    File "C:\Python25\Lib\site-packages\harvest\harvest.py", line 24, in 
> <module>
>      import solar_install
>    File "C:\Python25\Lib\site-packages\harvest\solar_install.py", line 
> 10, in <module>
>      spring = helix(frame = solar_install, pos=(0,2,1), axis=(5,0,0), 
> radius=0.5)
>    File "C:\Python25\lib\site-packages\visual\primitives.py", line 479, 
> in __init__
>      color = color, pos=pos_data, **extrakwds)
> TypeError: Boost.Python.class object got multiple values for keyword 
> argument 'frame'
>  >>>
>
>
>   

[Visualpython-users] Visual python is an excellent piece of code.

[Chris L. <chr...@sp...>]

But labels don't have lengths... :D

Sorry...




-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.409 / Virus Database: 268.15.19/587 - Release Date: 14/12/2006

[Visualpython-users] Visual python is an excellent piece of code.

[Chris L. <chr...@sp...>]

Just done...


# Scale the frame

scale_x=scale_y=scale_z = scale_length = .001

for obj in solar_install.objects:
      obj.x = obj.x * scale_x
      obj.y = obj.y * scale_y
      obj.z = obj.z * scale_z
      obj.length = obj.length * scale_length

Conceptionally this is a seriously useful tool :D


Chris@wyleu.


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.409 / Virus Database: 268.15.19/587 - Release Date: 14/12/2006

[Visualpython-users] Can a helix join a frame?

[Chris L. <chr...@sp...>]

Tried this:

solar_install = frame()

status_sphere=sphere(frame = solar_install, radius = 4, pos = 
(10,10,10), opacity= .4,color = (.8,.6,0))

spring = helix(frame = solar_install, pos=(0,2,1), axis=(5,0,0), radius=0.5)


Got:

Traceback (most recent call last):
   File "C:\Python25\Lib\site-packages\harvest\harvest.py", line 24, in 
<module>
     import solar_install
   File "C:\Python25\Lib\site-packages\harvest\solar_install.py", line 
10, in <module>
     spring = helix(frame = solar_install, pos=(0,2,1), axis=(5,0,0), 
radius=0.5)
   File "C:\Python25\lib\site-packages\visual\primitives.py", line 479, 
in __init__
     color = color, pos=pos_data, **extrakwds)
TypeError: Boost.Python.class object got multiple values for keyword 
argument 'frame'
 >>>


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.409 / Virus Database: 268.15.19/587 - Release Date: 14/12/2006

Re: [Visualpython-users] Confusion about rotating camera around an object.

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

Here is a working program. The key point is that since you want to move 
the camera around the z axis, you need to make scene.up = (0,0,1), so 
that the "groundplane" is the ground. Also, you need to rotate by pi/2 
each time, not pi and 3*pi/2 the second and third times. There's no 
point in importing cylinder etc. separately, once you've said "from 
visual import *". Just for clarity I made the rotation gradual to make 
it easier to see what was happening.

from visual import *
scene.background = (.6,.6,.6)
scene.up = (0,0,1)
scene.forward = (0,.7,-.6)

groundframe = frame()
g = cylinder(frame = groundframe, radius =10 , red = 0, blue = 0,
             axis = (0,0,-.1), opacity= .5)
opacity = 0.5
shaftwidth = 0.2

axisframe = frame()
labelframe = frame()

xeaxis = arrow(frame = axisframe, shaftwidth = shaftwidth,
    axis=(10,0,0), color=color.red,opacity = opacity) #  xe red
xwaxis = arrow(frame = axisframe, shaftwidth = shaftwidth,
    axis=(-10,0,0), color=color.cyan,opacity = opacity) # xw  cyan
ynaxis = arrow(frame = axisframe, shaftwidth = shaftwidth,
    axis=(0,10,0), color=color.black,opacity = opacity) # yn black
ysaxis = arrow(frame = axisframe, shaftwidth = shaftwidth,
    axis=(0,-10,0), color=color.magenta,opacity = opacity) # ys magenta
zpaxis = arrow(frame = axisframe, axis=(0,0,4), 
color=color.yellow,opacity =
    opacity, shaftwidth = shaftwidth)    # zp yellow
zmaxis =arrow(frame = axisframe, axis=(0,0,-4), color=color.blue,opacity =
    opacity, shaftwidth = shaftwidth)    # zm blue

nlabel = label(frame = labelframe, pos = ynaxis.axis, text = 'N',
               opacity = opacity)
elabel = label(frame = labelframe, pos = xeaxis.axis, text = 'E',
               opacity = opacity)
wlabel = label(frame = labelframe, pos = xwaxis.axis, text = 'W',
               opacity = opacity)
slabel = label(frame = labelframe, pos = ysaxis.axis, text = 'S',
               opacity = opacity)

while True:
    scene.mouse.getclick()
    steps = 50
    for step in range(steps):
        rate(2*steps)
        scene.forward = rotate( scene.forward, axis = (0,0,-1), angle = 
pi/2/steps )


Chris Lyon wrote:
> Gives me a view over the south axis towards the centre of the frame.
> I want to rotate the camera so I can look over the E W and North axis 
> but maintain the overall 'display' If I had a box drawn at 0,0,0 I would 
> like to look at the four vertical faces inturn. by using the rotate command.
>
> I am trying to use rotate to enact 3 buttons which act out the following 
> three commands.
>
> scene.forward = rotate( scene.forward, axis = (0,0,-1), angle = pi/2 )
> scene.forward = rotate( scene.forward, axis = (0,0,-1), angle = pi )
> scene.forward = rotate( scene.forward, axis = (0,0,-1), angle = (3 *pi)/2 )
>
> i reckon I'm not really understanding up's effect on all this but i've 
> got to the randomly poking in numbers which isn't having much useful effect.
>
> I am trying to build an environment that i can rotate easily in 90 
> degree chunks at the press of a command button but maintain the overall 
> 'appearance'. In essence so I view the scene from a similar elevation 
> above the groundplane bu the position rotated appropriately round the 
> centre point.
>
>
>
>
>
>
>