visualpython-users

[Visualpython-users] Nifti-Images (NiBabel) in vPython?

[Andreas H. <ma...@an...>]

Hi there,

I am very new to vPython and have the following question:
Would it be possible somehow to three-dimensionally display Nifti-Images via NiBabel in 3D using vPython? Nifti is a 3d-file type we use in Neuroscience.
Where would I start? Is there some way to extract 3D-Information from external files in vPython at all?

Thank you so much for your help!

Yours, sincerely, Andreas Horn

Re: [Visualpython-users] MAC-OSX.txt missing in tar file

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

Depends on what you're trying to do.

The Linux tarball is useful for building on a Mac if you're not trying
to build a version of VPython with the Mac look and feel -- it's aimed
at using GTK and X Windows, not the Mac windowing environment. A
related environment is Fink.

The tools for building VPython on a Mac with a Mac look and feel,
using Carbon, are available in CVS. Because it is rare that someone
wants to build this from source on the Mac, there's no special package
available for the purpose, and you need to get what you need from CVS.

Bruce Sherwood

On Sun, Jul 31, 2011 at 4:37 AM, K.-Michael Aye <kmi...@gm...> wrote:
>
> On Jul 31, 2011, at 5:22 , Bruce Sherwood wrote:
>
>> It's not clear to me what "tar file for MAC" you're referring to.
>> There's a tar file for Linux but not for Mac at vpython.org.
>
> But that tar file is meant to be used for Mac compilation from source, I thought? Am I wrong?
> Or do I HAVE to go via CVS on a Mac?
> If yes, it's clear that the MAC-OSX.txt does not have to be included in the tar file. If no, it would be helpful to include it
> in the tar, because it's actually referred to (or even required? I can't judge that yet).
>
> For information, I am going through the compiling ordeal, because I want to compile it for the Enthought package.
> Any useful stuff will be written up and put online somewhere. I will notify the list about any success, shall it come. ;)
>
> Michael
>
>
>
>> All files
>> are in CVS at sourceforge.net. In any case, here is the content of the
>> file MAC-OSX.txt:
>>
>> HOW TO BUILD VISUAL 5 USING CARBON
>> Install XcodeTools from the optional materials on the Mac installation DVD.
>> Installing XcodeTools automatically installs the large number of individualvp
>> components also listed on the DVD.
>>
>> Install Python for the Mac ("MacPython") from python.org.
>> There is already a /usr/bin/python that at the moment is up to date, but
>> because this isn't always the case, and because the Python community seems to
>> strongly prefer it, we will base Visual on MacPython, which is
>> /usr/local/bin/python.
>>
>> PYTHON INSTALLERS
>> The standard Python installers at python.org for the Mac install into
>>   /Library/Frameworks/Python.framework/Versions/
>>
>> For Python 2.x, the installer modified .profile to add the newly
>> installed Python
>> to the application search PATH. The installer also added or changed a link
>>   /Library/Frameworks/Python.framework/Versions/Current
>> to point to the newly installed Python. However, the Python 3.x installer does
>> NOT modify .profile or Current.
>>
>> For the makefile to pick out the correct Python framework in building
>> Visual, you need
>> to create or modify
>> /Library/Frameworks/Python.framework/Versions/Current. Assume
>> that the new Python is in /Library/Frameworks/Python.framework/Versions/3.1:
>>   cd /Library/Frameworks/Python.framework/Versions
>>   (if necessary, "sudo rm Current" if there already is one)
>>   sudo ln -s 3.1 Current
>>
>> You should also add the following to .profile (in your home directory), so that
>> executing "python" in a Terminal will run the newly installed Python:
>>   PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}"
>>   export PATH
>>
>> INSTALLING MODULES NEEDED BY VISUAL
>> Next you need to install numpy. You may find an installer for it. Otherwise:
>> Download the source for numpy and unpack it (http://www.scipy.org/Download).
>> In the numpy directory, execute "sudo python setup.py install".
>> This installs the numpy module which includes needed header files.
>>
>> For Visual 5.3 and later, you need the Python modules FontTools,
>> ttfquery, and Polygon.
>> Be sure to get ttfquery 1.0.4 or later.
>> Polygon is available at http://polygon.origo.ethz.ch/download
>> Currently, use the Polygon 2.0.1 binary for Python 2.6, which works
>> with Python 27;
>> I have not succeeded in building Polygon from source. Nor did I
>> succeed with Python 3.1
>> but got a Mac binary from the Polygon maintainer Joerg Raedler
>> <jo...@j-...>.
>>
>> Note The following copyright notice applies to the Polygon module when
>> included in
>> the VPython distribution concerning Polygon:
>>
>> "This distribution contains code from the GPC Library, and/or code
>> resulting from the use of the GPC Library. This usage has been
>> authorized by The University of Manchester, on the understanding
>> that the GPC-related features are used only in the context of this
>> distribution. It is not permitted to extract the GPC code from the
>> distribution as the basis for commercial exploitation, unless a
>> GPC Commercial Use Licence is obtained from The University of
>> Manchester, contact: http://www.cs.man.ac.uk/~toby/gpc/".
>>
>> BUILD VISUAL
>> You need Boost libraries for the Mac. See below for how to build the
>> Boost libraries.
>> (The following may not work, because up-to-date files are not also
>> provided in CVS:
>> In the dependencies section of CVS, unzip the zip file. You should
>> name the resulting
>> folder in dependencies "boost_files", containing boost (the include files),
>> win_libs (for Windows), and mac_libs (for Mac).)
>>
>> In src/mac, execute sudo make setup.
>> This creates a build directory mbuild parallel to the CVS files, and
>> creates links
>> from /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages
>> to
>> the visual directory in the CVS files.
>>
>> In the mbuild directory, execute sudo make install to build and install Visual.
>> This creates cvisual.so in the CVS site-packages/visual directory, which is
>> linked as explained above, ready to run.
>>
>> In site-packages/vidle, execute "python MacBuildApp.py build" to build
>> an app to drive VIDLE,
>> an updated alternative to the IDLE shipped with Python. However, the
>> resulting launcher seems
>> to be not very robust and the resulting launcher has been modified and
>> is found in
>> src/mac/PackageMaker/VIDLE_launcher.zip.
>> For more details, see src/mac/PackageMaker/packaging.txt.
>>
>> Run compilevisual.py (top of CVS) to compile all Visual Python files.
>>
>> Another option to compile all of the .py files in a directory is this:
>>       import compileall
>>       compileall.compile_dir("mylib", force=1)
>>
>> CREATE INSTALLER
>> In src/mac/PackageMaker is an Apple PackageMaker project file, a
>> Welcome text file
>> for creating a VPython installer for the Mac, and instructions in packaging.txt.
>>
>> Be sure to set the project status to require OSX 10.4 and above.
>>
>> BUILDING BOOST LIBRARIES
>> The Boost libraries were built by downloading the source.
>> cd to the Boost directory and execute
>>
>> ./bootstrap.sh --with-toolset=gcc --with-python-version=3.1
>> --with-python-root=/Library/Frameworks/Python.framework/Versions/3.1
>> --with-python=python3.1 --with-libraries=python,signals,thread
>>
>> to create the bjam tool and project-config.jam.
>>
>> In the file project-config.jam, change "using gcc ;" to "using gcc :
>> 4.0 : g++-4.0 ;"
>>
>> The purpose is to build Boost libraries using the same g++-4.0
>> compiler used to build Visual, which
>> should enable Visual to run on OSX 10.4 (for which g++-4.2 doesn't work).
>>
>> Now execute ./bjam to build the Boost libraries.
>>
>> The files you want will be in stage/lib.
>> Move the following files to dependencies/boost_files/mac_libs:
>> libboost_python.a
>> libboost_signals.a
>> libboost_thread.a
>>
>> In the past the following was used, but it seems neither necessary nor
>> sufficient with Python 2.7:
>> ---------------------
>> ./bjam --toolset=darwin
>> -sPYTHON_ROOT=/Library/Frameworks/Python.framework/Versions/2.7/bin/python
>> --address-model=32_64 --architecture=x86 --build-type=complete
>> --layout=versioned --with-python --with-thread --with-signals stage
>>
>> The files you want will be in stage/lib.
>> Move these files to dependencies/boost_files/mac_libs (file names will
>> be similar to the following):
>> libboost_python-mt-s-1_35.a
>> libboost_signals-mt-s-1_35.a
>> libboost_thread-mt-s-1_35.a
>> ----------------------
>>
>> ----------
>> I built Boost libraries on a PowerPC running OS X 10.4 and tried using them
>> on a PowerPC running OS X 10.5. Example programs ran okay, but in each case
>> there was the following warning. In retrospect there may have been confusion
>> between two different Python 2.5's on the machine.
>>
>> Warning (from warnings module):
>>  File "/Library/Python/2.5/site-packages/visual/__init__.py", line 149
>>    import cvisual
>> RuntimeWarning: Python C API version mismatch for module cvisual:
>> This Python has API version 1013, module cvisual has version 1012.
>>
>> After rebuilding the Boost libraries on a PowerPC running OS X 10.5 this
>> warning went away.
>>
>> ------------------------------------------------------
>> Obsolete, of historical interest only: HOW TO BUILD VISUAL 4 ON Apple
>> OSX using GTK2 (Version 10.4.x)
>>
>> If you find gaps in this information, please tell Bru...@nc....
>>
>> Make sure X11 and Xcode are installed (found on the installation DVD).
>> X11 is automatically installed on 10.5.
>>
>> To do a clean install of fink (www.finkproject.org), I deleted /sw and
>> started from scratch.
>> Install fink from fink.sourceforge.net. Probably best to install from source?
>> I use Fink Commander as a GUI to fink, but you can use the command line.
>>
>> Create a file in your home directory named ".profile" with these contents:
>> test -r /sw/bin/init.sh && . /sw/bin/init.sh
>>
>> Start up a new terminal program, which will read the .profile file
>> with the effect that
>> /sw/bin will be on your application search path.
>>
>> Use fink to install the components listed for Linux in INSTALL.txt
>> (details repeated here).
>>
>>       If you're not using Fink Commander (and despite its graphic user
>> interface there are
>>       hints that maybe it is buggy), on a command line you say for example
>> "fink install python25".
>>
>>       Execute fink selfupdate to get the latest packages. (You may need to
>> invoke /sw/bin/fink.)
>>
>>       Install numpy-py25, which also installs python25.
>>       (2008/4/2 on OSX 10.5; accepted the choice "db44-aes-shlibs: Shared
>> Libraries for db44-aes")
>>
>>       Currently (Jan. 2008) you will find 10 entries for Boost libraries;
>> if using Fink Commander
>>       you need to expand the package name field wide enough to be able to
>> see the full names,
>>       as you want the Boost libraries for Python 2.5.
>>
>>       Install boost1.34.python25, boost1.34.systempython, and boost1.34.nopython.
>>       (You can say fink install boost1.34.python25 boost1.34.systempython
>> boost1.34.nopython)
>>
>>       Next install gtkmm2.4-dev, which installs many other packages on
>> which it depends, including
>>       gtk+2, glib, glibmm, libsig++, atk, pango, expat1, libpng3,
>>       automake, autoconf, libtool, pkgconfig
>>
>>       Next, install these libraries:
>>       libglademm2.4 (also installs libglademm2.4-shlibs)
>>
>>       cairomm1 (also installs cairomm1-shlibs, freetype219,
>> freetype219-shlibs etc; takes a LONG time)
>>
>>       gtkglextmm (also installs gtkglextmm-shlibs, gtkglext1, gtkglext1-shlibs)
>>
>>       Need freetype2, but freetype219 and freetype219-shlibs are installed
>> instead (by cairomm1).
>>       Because this does not put freetype2.pc into the usual place
>> (/sw/lib/pkgconfig),
>>       PKG_CONFIG_PATH is set in the configure script to find it.
>>
>> You can test the pkgconfig machinery by executing the following:
>>          pkg-config --libs pango (or /sw/bin/pkg-config --libs pango)
>> The output should be -L/sw/lib -lpango-1.0 -lm -lgobject-2.0
>> -lgmodule-2.0 -lglib-2.0 -lintl -liconv
>>
>> Next cd into the vpython-core2 directory and execute chmod +x
>> autogen.sh, then ./autogen.sh
>> Here is what happens when I run autogen.sh:
>> /sw/share/aclocal/gtkglextmm-1.2.m4:225: warning:
>>          underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
>>  run info '(automake)Extending aclocal'
>>  or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
>> configure.ac: installing `./missing'
>> Completed successfully
>>
>> Apparently the warning about AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD isn't
>> fatal, as it was possible
>> to build Visual.
>>
>> After important help from Martin Costabel, I was able to make,
>> install, and run successfully.
>> I placed this file in a build directory at the same level as vpython-core2:
>> #!/bin/sh -ex
>> export CPPFLAGS="-Wno-long-double"
>> export PKG_CONFIG_PATH=/sw/lib/fontconfig2/lib/pkgconfig:/sw/lib/xft2/lib/pkgconfig:/sw/lib/freetype219/lib/pkgconfig
>> export PYTHON=/sw/bin/python2.5
>> export CXXFLAGS="-O2 -g -finline-functions"
>> export CFLAGS='-O3 -g '
>> ../vpython-core2/configure --prefix=/sw --disable-dependency-tracking
>>
>> If you call this file config.txt, in the build directory you need to execute
>>   chmod +x config.txt
>> to make the file be executable by "./config.txt".
>>
>> Before making a change to src/Makefile.in, I got a message about
>> possible mismatch of versions,
>> as though when I build against /sw/bin/python2.5 and then run
>> /sw/bin/python2.5 the system thinks
>> these are different pythons. Martin Costabel commented:
>>
>> "I am getting this, too, when using the dynamic boost-python library,
>> but not with the static
>> libboost_python-mt.a. This is certainly a bug with the
>> libboost_python-mt.dylib, but I haven't
>> yet found a combination of build flags to build it correctly, in
>> particular in a way that would
>> also work on OSX 10.5."
>>
>> Following his suggestion, I put Mac-specific code into src/Makefile.in
>> to link to these other
>> libraries. But then I got this error message in the link phase of the make:
>>
>> /usr/bin/ld: table of contents for archive:
>> /sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
>> load from it)
>>
>> So I executed ranlib /sw/lib/libboost_python-mt.a, redid the make,
>> executed make install, and it worked.
>>
>> When there looked to be a Boost problem, tried building Boost
>> libraries from scratch:
>>
>> ./configure --prefix=/sw --with-libraries=python,thread
>> --with-python=/sw/bin/python2.5
>>   (This creates user-config.jam)
>> make
>>   (apparently equivalent to bjam --user-config=user-config.jam
>> --with-python --with-thread)
>> sudo make install
>> There's a name issue; the boost includes need to be available at
>> /sw/include/boost, so do this:
>> cd /sw/include/boost_1_34_1
>> sudo cp -r boost /sw/include
>> I don't understand how /sw/include/boost is found. Looking at our
>> src/build.log, I don't see
>> anything that specifies we should look generally in /sw/include. Yet
>> when boost is buried in
>> boost_1_34_1, we don't find header files, and when it is unburied into
>> /sw/include/boost we do.
>>
>> After a successfull make and "make install" invoking dynamic libraries,
>> copy these new boost files to /sw/lib/python2.5/site-packages:
>> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
>> bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib
>> bin.v2/libs/thread/build/darwin/release/threading-multi/libboost_thread-mt-1_34_1.dylib
>>
>> But cvisual can't find a dylib:
>>
>> Traceback (most recent call last):
>>  File "/sw/lib/python2.5/site-packages/visual/examples/bounce2.py",
>> line 1, in <module>
>>    from visual import *
>>  File "/sw/lib/python2.5/site-packages/visual/__init__.py", line 140,
>> in <module>
>>    import cvisual
>> ImportError: dlopen(/sw/lib/python2.5/site-packages/cvisualmodule.so,
>> 2): Library not loaded:
>> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
>>  Referenced from: /sw/lib/python2.5/site-packages/cvisualmodule.so
>>  Reason: image not found
>>
>> I think I've seen stuff on the web about problems with locating dylibs.
>>
>> Tried changing src/Makefile.in to use only static boost libraries:
>>
>>  ifeq ($(PYTHON_PLATFORM),darwin)
>>    # Special rules for OSX
>>    CVISUAL_LIBS += $(filter-out $(_FILTER_OUT), $(GTK_LIBS) \
>>       $(GTHREAD_LIBS) /sw/lib/libboost_python-mt.a
>> /sw/lib/libboost_thread-mt.a)
>>
>> This happened on the make:
>>
>> /usr/bin/ld: table of contents for archive:
>> /sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
>> load from it)
>> /usr/bin/ld: table of contents for archive:
>> /sw/lib/libboost_thread-mt.a is out of date; rerun ranlib(1) (can't
>> load from it)
>>
>> So I did this:
>>
>> bruce-sherwoods-computer:~/Documents/workspace/build brucesherwood$ cd /sw/lib
>> bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_python-mt.a
>> Password:
>> bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_thread-mt.a
>> ranlib: file: libboost_thread-mt.a(tss_hooks.o) has no symbols
>> ranlib: file: libboost_thread-mt.a(tss_dll.o) has no symbols
>> ranlib: file: libboost_thread-mt.a(tss_pe.o) has no symbols
>> bruce-sherwoods-computer:/sw/lib brucesherwood$
>>
>> -----------------
>> Unsuccessful approach
>> bjam --prefix=/sw --toolset=darwin --with-python-version=2.5 --with-thread stage
>>
>> Copy the directory named "boost" to /sw/include.
>>
>>> cp stage/lib/libboost_thread-mt.a /sw/lib
>>> cp bin.v2/libs/python/build/darwin/release/link-static/threading-multi/libboost_python-mt-1_34_1.a /sw/lib/libboost_python.a
>>
>> After a successfull make and "make install" invoking dynamic libraries,
>> copied these new boost files to /sw/lib/python2.5/site-packages:
>> stage/lib/libboost_thread-mt-1_34_1.dylib
>> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
>> bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib
>>
>> This attempt didn't help. Still get "Fatal Python error: Interpreter
>> not initialized (version mismatch?).
>> Is it possible that bjam worked against an old version of Python?
>> Maybe /user/bin/python (which is the
>> one I see with "which python" and which is version 2.3.5)? No reason
>> bjam should look for python in /sw.
>>
>>
>> On Sat, Jul 30, 2011 at 12:50 PM, K.-Michael Aye <kmi...@gm...> wrote:
>>> Dear all,
>>>
>>> I think the MAC-OSX.txt is missing in the most recent tar file for MAC, but it's referred to by INSTALL.txt and HACKING .txt.
>>> Is it just missing or do I not need it anymore because I should read and rely on INSTALL and HACKING?
>>>
>>> Best regards,
>>> Michael
>>>
>>>
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>>
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>
>

Re: [Visualpython-users] MAC-OSX.txt missing in tar file

[K.-Michael A. <kmi...@gm...>]

On Jul 31, 2011, at 5:22 , Bruce Sherwood wrote:

> It's not clear to me what "tar file for MAC" you're referring to.
> There's a tar file for Linux but not for Mac at vpython.org.

But that tar file is meant to be used for Mac compilation from source, I thought? Am I wrong?
Or do I HAVE to go via CVS on a Mac?
If yes, it's clear that the MAC-OSX.txt does not have to be included in the tar file. If no, it would be helpful to include it 
in the tar, because it's actually referred to (or even required? I can't judge that yet).

For information, I am going through the compiling ordeal, because I want to compile it for the Enthought package.
Any useful stuff will be written up and put online somewhere. I will notify the list about any success, shall it come. ;)

Michael



> All files
> are in CVS at sourceforge.net. In any case, here is the content of the
> file MAC-OSX.txt:
> 
> HOW TO BUILD VISUAL 5 USING CARBON
> Install XcodeTools from the optional materials on the Mac installation DVD.
> Installing XcodeTools automatically installs the large number of individualvp
> components also listed on the DVD.
> 
> Install Python for the Mac ("MacPython") from python.org.
> There is already a /usr/bin/python that at the moment is up to date, but
> because this isn't always the case, and because the Python community seems to
> strongly prefer it, we will base Visual on MacPython, which is
> /usr/local/bin/python.
> 
> PYTHON INSTALLERS
> The standard Python installers at python.org for the Mac install into
>   /Library/Frameworks/Python.framework/Versions/
> 
> For Python 2.x, the installer modified .profile to add the newly
> installed Python
> to the application search PATH. The installer also added or changed a link
>   /Library/Frameworks/Python.framework/Versions/Current
> to point to the newly installed Python. However, the Python 3.x installer does
> NOT modify .profile or Current.
> 
> For the makefile to pick out the correct Python framework in building
> Visual, you need
> to create or modify
> /Library/Frameworks/Python.framework/Versions/Current. Assume
> that the new Python is in /Library/Frameworks/Python.framework/Versions/3.1:
>   cd /Library/Frameworks/Python.framework/Versions
>   (if necessary, "sudo rm Current" if there already is one)
>   sudo ln -s 3.1 Current
> 
> You should also add the following to .profile (in your home directory), so that
> executing "python" in a Terminal will run the newly installed Python:
>   PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}"
>   export PATH
> 
> INSTALLING MODULES NEEDED BY VISUAL
> Next you need to install numpy. You may find an installer for it. Otherwise:
> Download the source for numpy and unpack it (http://www.scipy.org/Download).
> In the numpy directory, execute "sudo python setup.py install".
> This installs the numpy module which includes needed header files.
> 
> For Visual 5.3 and later, you need the Python modules FontTools,
> ttfquery, and Polygon.
> Be sure to get ttfquery 1.0.4 or later.
> Polygon is available at http://polygon.origo.ethz.ch/download
> Currently, use the Polygon 2.0.1 binary for Python 2.6, which works
> with Python 27;
> I have not succeeded in building Polygon from source. Nor did I
> succeed with Python 3.1
> but got a Mac binary from the Polygon maintainer Joerg Raedler
> <jo...@j-...>.
> 	
> Note The following copyright notice applies to the Polygon module when
> included in
> the VPython distribution concerning Polygon:
> 
> "This distribution contains code from the GPC Library, and/or code
> resulting from the use of the GPC Library. This usage has been
> authorized by The University of Manchester, on the understanding
> that the GPC-related features are used only in the context of this
> distribution. It is not permitted to extract the GPC code from the
> distribution as the basis for commercial exploitation, unless a
> GPC Commercial Use Licence is obtained from The University of
> Manchester, contact: http://www.cs.man.ac.uk/~toby/gpc/".
> 
> BUILD VISUAL
> You need Boost libraries for the Mac. See below for how to build the
> Boost libraries.
> (The following may not work, because up-to-date files are not also
> provided in CVS:
> In the dependencies section of CVS, unzip the zip file. You should
> name the resulting
> folder in dependencies "boost_files", containing boost (the include files),
> win_libs (for Windows), and mac_libs (for Mac).)
> 
> In src/mac, execute sudo make setup.
> This creates a build directory mbuild parallel to the CVS files, and
> creates links
> from /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages
> to
> the visual directory in the CVS files.
> 
> In the mbuild directory, execute sudo make install to build and install Visual.
> This creates cvisual.so in the CVS site-packages/visual directory, which is
> linked as explained above, ready to run.
> 
> In site-packages/vidle, execute "python MacBuildApp.py build" to build
> an app to drive VIDLE,
> an updated alternative to the IDLE shipped with Python. However, the
> resulting launcher seems
> to be not very robust and the resulting launcher has been modified and
> is found in
> src/mac/PackageMaker/VIDLE_launcher.zip.
> For more details, see src/mac/PackageMaker/packaging.txt.
> 
> Run compilevisual.py (top of CVS) to compile all Visual Python files.
> 
> Another option to compile all of the .py files in a directory is this:
> 	import compileall
> 	compileall.compile_dir("mylib", force=1)
> 
> CREATE INSTALLER
> In src/mac/PackageMaker is an Apple PackageMaker project file, a
> Welcome text file
> for creating a VPython installer for the Mac, and instructions in packaging.txt.
> 
> Be sure to set the project status to require OSX 10.4 and above.
> 
> BUILDING BOOST LIBRARIES
> The Boost libraries were built by downloading the source.
> cd to the Boost directory and execute
> 
> ./bootstrap.sh --with-toolset=gcc --with-python-version=3.1
> --with-python-root=/Library/Frameworks/Python.framework/Versions/3.1
> --with-python=python3.1 --with-libraries=python,signals,thread
> 
> to create the bjam tool and project-config.jam.
> 
> In the file project-config.jam, change "using gcc ;" to "using gcc :
> 4.0 : g++-4.0 ;"
> 
> The purpose is to build Boost libraries using the same g++-4.0
> compiler used to build Visual, which
> should enable Visual to run on OSX 10.4 (for which g++-4.2 doesn't work).
> 
> Now execute ./bjam to build the Boost libraries.
> 
> The files you want will be in stage/lib.
> Move the following files to dependencies/boost_files/mac_libs:
> libboost_python.a
> libboost_signals.a
> libboost_thread.a
> 
> In the past the following was used, but it seems neither necessary nor
> sufficient with Python 2.7:
> ---------------------
> ./bjam --toolset=darwin
> -sPYTHON_ROOT=/Library/Frameworks/Python.framework/Versions/2.7/bin/python
> --address-model=32_64 --architecture=x86 --build-type=complete
> --layout=versioned --with-python --with-thread --with-signals stage
> 
> The files you want will be in stage/lib.
> Move these files to dependencies/boost_files/mac_libs (file names will
> be similar to the following):
> libboost_python-mt-s-1_35.a
> libboost_signals-mt-s-1_35.a
> libboost_thread-mt-s-1_35.a
> ----------------------
> 
> ----------
> I built Boost libraries on a PowerPC running OS X 10.4 and tried using them
> on a PowerPC running OS X 10.5. Example programs ran okay, but in each case
> there was the following warning. In retrospect there may have been confusion
> between two different Python 2.5's on the machine.
> 
> Warning (from warnings module):
>  File "/Library/Python/2.5/site-packages/visual/__init__.py", line 149
>    import cvisual
> RuntimeWarning: Python C API version mismatch for module cvisual:
> This Python has API version 1013, module cvisual has version 1012.
> 
> After rebuilding the Boost libraries on a PowerPC running OS X 10.5 this
> warning went away.
> 
> ------------------------------------------------------
> Obsolete, of historical interest only: HOW TO BUILD VISUAL 4 ON Apple
> OSX using GTK2 (Version 10.4.x)
> 
> If you find gaps in this information, please tell Bru...@nc....
> 
> Make sure X11 and Xcode are installed (found on the installation DVD).
> X11 is automatically installed on 10.5.
> 	
> To do a clean install of fink (www.finkproject.org), I deleted /sw and
> started from scratch.
> Install fink from fink.sourceforge.net. Probably best to install from source?
> I use Fink Commander as a GUI to fink, but you can use the command line.
> 
> Create a file in your home directory named ".profile" with these contents:
> test -r /sw/bin/init.sh && . /sw/bin/init.sh
> 
> Start up a new terminal program, which will read the .profile file
> with the effect that
> /sw/bin will be on your application search path.
> 	
> Use fink to install the components listed for Linux in INSTALL.txt
> (details repeated here).
> 	
> 	If you're not using Fink Commander (and despite its graphic user
> interface there are
> 	hints that maybe it is buggy), on a command line you say for example
> "fink install python25".
> 	
> 	Execute fink selfupdate to get the latest packages. (You may need to
> invoke /sw/bin/fink.)
> 	
> 	Install numpy-py25, which also installs python25.
> 	(2008/4/2 on OSX 10.5; accepted the choice "db44-aes-shlibs: Shared
> Libraries for db44-aes")
> 
> 	Currently (Jan. 2008) you will find 10 entries for Boost libraries;
> if using Fink Commander
> 	you need to expand the package name field wide enough to be able to
> see the full names,
> 	as you want the Boost libraries for Python 2.5.
> 	
> 	Install boost1.34.python25, boost1.34.systempython, and boost1.34.nopython.
> 	(You can say fink install boost1.34.python25 boost1.34.systempython
> boost1.34.nopython)
> 	
> 	Next install gtkmm2.4-dev, which installs many other packages on
> which it depends, including
> 	gtk+2, glib, glibmm, libsig++, atk, pango, expat1, libpng3,
> 	automake, autoconf, libtool, pkgconfig
> 	
> 	Next, install these libraries:
> 	libglademm2.4 (also installs libglademm2.4-shlibs)
> 	
> 	cairomm1 (also installs cairomm1-shlibs, freetype219,
> freetype219-shlibs etc; takes a LONG time)
> 	
> 	gtkglextmm (also installs gtkglextmm-shlibs, gtkglext1, gtkglext1-shlibs)
> 	
> 	Need freetype2, but freetype219 and freetype219-shlibs are installed
> instead (by cairomm1).
> 	Because this does not put freetype2.pc into the usual place
> (/sw/lib/pkgconfig),
> 	PKG_CONFIG_PATH is set in the configure script to find it.
> 
> You can test the pkgconfig machinery by executing the following:
> 	   pkg-config --libs pango (or /sw/bin/pkg-config --libs pango)
> The output should be -L/sw/lib -lpango-1.0 -lm -lgobject-2.0
> -lgmodule-2.0 -lglib-2.0 -lintl -liconv
> 
> Next cd into the vpython-core2 directory and execute chmod +x
> autogen.sh, then ./autogen.sh
> Here is what happens when I run autogen.sh:
> /sw/share/aclocal/gtkglextmm-1.2.m4:225: warning:
>          underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
>  run info '(automake)Extending aclocal'
>  or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
> configure.ac: installing `./missing'
> Completed successfully
> 
> Apparently the warning about AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD isn't
> fatal, as it was possible
> to build Visual.
> 	
> After important help from Martin Costabel, I was able to make,
> install, and run successfully.
> I placed this file in a build directory at the same level as vpython-core2:
> #!/bin/sh -ex
> export CPPFLAGS="-Wno-long-double"
> export PKG_CONFIG_PATH=/sw/lib/fontconfig2/lib/pkgconfig:/sw/lib/xft2/lib/pkgconfig:/sw/lib/freetype219/lib/pkgconfig
> export PYTHON=/sw/bin/python2.5
> export CXXFLAGS="-O2 -g -finline-functions"
> export CFLAGS='-O3 -g '
> ../vpython-core2/configure --prefix=/sw --disable-dependency-tracking
> 
> If you call this file config.txt, in the build directory you need to execute
>   chmod +x config.txt
> to make the file be executable by "./config.txt".
> 	
> Before making a change to src/Makefile.in, I got a message about
> possible mismatch of versions,
> as though when I build against /sw/bin/python2.5 and then run
> /sw/bin/python2.5 the system thinks
> these are different pythons. Martin Costabel commented:
> 
> "I am getting this, too, when using the dynamic boost-python library,
> but not with the static
> libboost_python-mt.a. This is certainly a bug with the
> libboost_python-mt.dylib, but I haven't
> yet found a combination of build flags to build it correctly, in
> particular in a way that would
> also work on OSX 10.5."
> 
> Following his suggestion, I put Mac-specific code into src/Makefile.in
> to link to these other
> libraries. But then I got this error message in the link phase of the make:
> 
> /usr/bin/ld: table of contents for archive:
> /sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
> load from it)
> 
> So I executed ranlib /sw/lib/libboost_python-mt.a, redid the make,
> executed make install, and it worked.
> 
> When there looked to be a Boost problem, tried building Boost
> libraries from scratch:
> 
> ./configure --prefix=/sw --with-libraries=python,thread
> --with-python=/sw/bin/python2.5
>   (This creates user-config.jam)
> make
>   (apparently equivalent to bjam --user-config=user-config.jam
> --with-python --with-thread)
> sudo make install
> There's a name issue; the boost includes need to be available at
> /sw/include/boost, so do this:
> cd /sw/include/boost_1_34_1
> sudo cp -r boost /sw/include
> I don't understand how /sw/include/boost is found. Looking at our
> src/build.log, I don't see
> anything that specifies we should look generally in /sw/include. Yet
> when boost is buried in
> boost_1_34_1, we don't find header files, and when it is unburied into
> /sw/include/boost we do.
> 
> After a successfull make and "make install" invoking dynamic libraries,
> copy these new boost files to /sw/lib/python2.5/site-packages:
> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
> bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib
> bin.v2/libs/thread/build/darwin/release/threading-multi/libboost_thread-mt-1_34_1.dylib
> 
> But cvisual can't find a dylib:
> 
> Traceback (most recent call last):
>  File "/sw/lib/python2.5/site-packages/visual/examples/bounce2.py",
> line 1, in <module>
>    from visual import *
>  File "/sw/lib/python2.5/site-packages/visual/__init__.py", line 140,
> in <module>
>    import cvisual
> ImportError: dlopen(/sw/lib/python2.5/site-packages/cvisualmodule.so,
> 2): Library not loaded:
> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
>  Referenced from: /sw/lib/python2.5/site-packages/cvisualmodule.so
>  Reason: image not found
> 
> I think I've seen stuff on the web about problems with locating dylibs.
> 
> Tried changing src/Makefile.in to use only static boost libraries:
> 
>  ifeq ($(PYTHON_PLATFORM),darwin)
>    # Special rules for OSX
>    CVISUAL_LIBS += $(filter-out $(_FILTER_OUT), $(GTK_LIBS) \
>       $(GTHREAD_LIBS) /sw/lib/libboost_python-mt.a
> /sw/lib/libboost_thread-mt.a)
> 
> This happened on the make:
> 
> /usr/bin/ld: table of contents for archive:
> /sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
> load from it)
> /usr/bin/ld: table of contents for archive:
> /sw/lib/libboost_thread-mt.a is out of date; rerun ranlib(1) (can't
> load from it)
> 
> So I did this:
> 
> bruce-sherwoods-computer:~/Documents/workspace/build brucesherwood$ cd /sw/lib
> bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_python-mt.a
> Password:
> bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_thread-mt.a
> ranlib: file: libboost_thread-mt.a(tss_hooks.o) has no symbols
> ranlib: file: libboost_thread-mt.a(tss_dll.o) has no symbols
> ranlib: file: libboost_thread-mt.a(tss_pe.o) has no symbols
> bruce-sherwoods-computer:/sw/lib brucesherwood$
> 
> -----------------
> Unsuccessful approach
> bjam --prefix=/sw --toolset=darwin --with-python-version=2.5 --with-thread stage
> 
> Copy the directory named "boost" to /sw/include.
> 
>> cp stage/lib/libboost_thread-mt.a /sw/lib
>> cp bin.v2/libs/python/build/darwin/release/link-static/threading-multi/libboost_python-mt-1_34_1.a /sw/lib/libboost_python.a
> 
> After a successfull make and "make install" invoking dynamic libraries,
> copied these new boost files to /sw/lib/python2.5/site-packages:
> stage/lib/libboost_thread-mt-1_34_1.dylib
> bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
> bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib
> 
> This attempt didn't help. Still get "Fatal Python error: Interpreter
> not initialized (version mismatch?).
> Is it possible that bjam worked against an old version of Python?
> Maybe /user/bin/python (which is the
> one I see with "which python" and which is version 2.3.5)? No reason
> bjam should look for python in /sw.
> 
> 
> On Sat, Jul 30, 2011 at 12:50 PM, K.-Michael Aye <kmi...@gm...> wrote:
>> Dear all,
>> 
>> I think the MAC-OSX.txt is missing in the most recent tar file for MAC, but it's referred to by INSTALL.txt and HACKING .txt.
>> Is it just missing or do I not need it anymore because I should read and rely on INSTALL and HACKING?
>> 
>> Best regards,
>> Michael
>> 
>> 
>> ------------------------------------------------------------------------------
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>> Take our quick survey online.  Come on, we don't ask for help often.
>> Plus, you'll get a chance to win $100 to spend on ThinkGeek.
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>> _______________________________________________
>> Visualpython-users mailing list
>> Vis...@li...
>> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>> 
> 
> ------------------------------------------------------------------------------
> Got Input?   Slashdot Needs You.
> Take our quick survey online.  Come on, we don't ask for help often.
> Plus, you'll get a chance to win $100 to spend on ThinkGeek.
> http://p.sf.net/sfu/slashdot-survey
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

Re: [Visualpython-users] MAC-OSX.txt missing in tar file

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

It's not clear to me what "tar file for MAC" you're referring to.
There's a tar file for Linux but not for Mac at vpython.org. All files
are in CVS at sourceforge.net. In any case, here is the content of the
file MAC-OSX.txt:

HOW TO BUILD VISUAL 5 USING CARBON
Install XcodeTools from the optional materials on the Mac installation DVD.
Installing XcodeTools automatically installs the large number of individualvp
components also listed on the DVD.

Install Python for the Mac ("MacPython") from python.org.
There is already a /usr/bin/python that at the moment is up to date, but
because this isn't always the case, and because the Python community seems to
strongly prefer it, we will base Visual on MacPython, which is
/usr/local/bin/python.

PYTHON INSTALLERS
The standard Python installers at python.org for the Mac install into
   /Library/Frameworks/Python.framework/Versions/

For Python 2.x, the installer modified .profile to add the newly
installed Python
to the application search PATH. The installer also added or changed a link
   /Library/Frameworks/Python.framework/Versions/Current
to point to the newly installed Python. However, the Python 3.x installer does
NOT modify .profile or Current.

For the makefile to pick out the correct Python framework in building
Visual, you need
to create or modify
/Library/Frameworks/Python.framework/Versions/Current. Assume
that the new Python is in /Library/Frameworks/Python.framework/Versions/3.1:
   cd /Library/Frameworks/Python.framework/Versions
   (if necessary, "sudo rm Current" if there already is one)
   sudo ln -s 3.1 Current

You should also add the following to .profile (in your home directory), so that
executing "python" in a Terminal will run the newly installed Python:
   PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}"
   export PATH

INSTALLING MODULES NEEDED BY VISUAL
Next you need to install numpy. You may find an installer for it. Otherwise:
Download the source for numpy and unpack it (http://www.scipy.org/Download).
In the numpy directory, execute "sudo python setup.py install".
This installs the numpy module which includes needed header files.

For Visual 5.3 and later, you need the Python modules FontTools,
ttfquery, and Polygon.
Be sure to get ttfquery 1.0.4 or later.
Polygon is available at http://polygon.origo.ethz.ch/download
Currently, use the Polygon 2.0.1 binary for Python 2.6, which works
with Python 27;
I have not succeeded in building Polygon from source. Nor did I
succeed with Python 3.1
but got a Mac binary from the Polygon maintainer Joerg Raedler
<jo...@j-...>.
	
Note The following copyright notice applies to the Polygon module when
included in
the VPython distribution concerning Polygon:

"This distribution contains code from the GPC Library, and/or code
resulting from the use of the GPC Library. This usage has been
authorized by The University of Manchester, on the understanding
that the GPC-related features are used only in the context of this
distribution. It is not permitted to extract the GPC code from the
distribution as the basis for commercial exploitation, unless a
GPC Commercial Use Licence is obtained from The University of
Manchester, contact: http://www.cs.man.ac.uk/~toby/gpc/".

BUILD VISUAL
You need Boost libraries for the Mac. See below for how to build the
Boost libraries.
(The following may not work, because up-to-date files are not also
provided in CVS:
In the dependencies section of CVS, unzip the zip file. You should
name the resulting
folder in dependencies "boost_files", containing boost (the include files),
win_libs (for Windows), and mac_libs (for Mac).)

In src/mac, execute sudo make setup.
This creates a build directory mbuild parallel to the CVS files, and
creates links
from /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages
to
the visual directory in the CVS files.

In the mbuild directory, execute sudo make install to build and install Visual.
This creates cvisual.so in the CVS site-packages/visual directory, which is
linked as explained above, ready to run.

In site-packages/vidle, execute "python MacBuildApp.py build" to build
an app to drive VIDLE,
an updated alternative to the IDLE shipped with Python. However, the
resulting launcher seems
to be not very robust and the resulting launcher has been modified and
is found in
src/mac/PackageMaker/VIDLE_launcher.zip.
For more details, see src/mac/PackageMaker/packaging.txt.

Run compilevisual.py (top of CVS) to compile all Visual Python files.

Another option to compile all of the .py files in a directory is this:
	import compileall
	compileall.compile_dir("mylib", force=1)

CREATE INSTALLER
In src/mac/PackageMaker is an Apple PackageMaker project file, a
Welcome text file
for creating a VPython installer for the Mac, and instructions in packaging.txt.

Be sure to set the project status to require OSX 10.4 and above.

BUILDING BOOST LIBRARIES
The Boost libraries were built by downloading the source.
cd to the Boost directory and execute

./bootstrap.sh --with-toolset=gcc --with-python-version=3.1
--with-python-root=/Library/Frameworks/Python.framework/Versions/3.1
--with-python=python3.1 --with-libraries=python,signals,thread

to create the bjam tool and project-config.jam.

In the file project-config.jam, change "using gcc ;" to "using gcc :
4.0 : g++-4.0 ;"

The purpose is to build Boost libraries using the same g++-4.0
compiler used to build Visual, which
should enable Visual to run on OSX 10.4 (for which g++-4.2 doesn't work).

Now execute ./bjam to build the Boost libraries.

The files you want will be in stage/lib.
Move the following files to dependencies/boost_files/mac_libs:
libboost_python.a
libboost_signals.a
libboost_thread.a

In the past the following was used, but it seems neither necessary nor
sufficient with Python 2.7:
---------------------
./bjam --toolset=darwin
-sPYTHON_ROOT=/Library/Frameworks/Python.framework/Versions/2.7/bin/python
--address-model=32_64 --architecture=x86 --build-type=complete
--layout=versioned --with-python --with-thread --with-signals stage

The files you want will be in stage/lib.
Move these files to dependencies/boost_files/mac_libs (file names will
be similar to the following):
libboost_python-mt-s-1_35.a
libboost_signals-mt-s-1_35.a
libboost_thread-mt-s-1_35.a
----------------------

----------
I built Boost libraries on a PowerPC running OS X 10.4 and tried using them
on a PowerPC running OS X 10.5. Example programs ran okay, but in each case
there was the following warning. In retrospect there may have been confusion
between two different Python 2.5's on the machine.

Warning (from warnings module):
  File "/Library/Python/2.5/site-packages/visual/__init__.py", line 149
    import cvisual
RuntimeWarning: Python C API version mismatch for module cvisual:
This Python has API version 1013, module cvisual has version 1012.

After rebuilding the Boost libraries on a PowerPC running OS X 10.5 this
warning went away.

------------------------------------------------------
Obsolete, of historical interest only: HOW TO BUILD VISUAL 4 ON Apple
OSX using GTK2 (Version 10.4.x)

If you find gaps in this information, please tell Bru...@nc....

Make sure X11 and Xcode are installed (found on the installation DVD).
X11 is automatically installed on 10.5.
	
To do a clean install of fink (www.finkproject.org), I deleted /sw and
started from scratch.
Install fink from fink.sourceforge.net. Probably best to install from source?
I use Fink Commander as a GUI to fink, but you can use the command line.

Create a file in your home directory named ".profile" with these contents:
test -r /sw/bin/init.sh && . /sw/bin/init.sh

Start up a new terminal program, which will read the .profile file
with the effect that
/sw/bin will be on your application search path.
	
Use fink to install the components listed for Linux in INSTALL.txt
(details repeated here).
	
	If you're not using Fink Commander (and despite its graphic user
interface there are
	hints that maybe it is buggy), on a command line you say for example
"fink install python25".
	
	Execute fink selfupdate to get the latest packages. (You may need to
invoke /sw/bin/fink.)
	
	Install numpy-py25, which also installs python25.
	(2008/4/2 on OSX 10.5; accepted the choice "db44-aes-shlibs: Shared
Libraries for db44-aes")

	Currently (Jan. 2008) you will find 10 entries for Boost libraries;
if using Fink Commander
	you need to expand the package name field wide enough to be able to
see the full names,
	as you want the Boost libraries for Python 2.5.
	
	Install boost1.34.python25, boost1.34.systempython, and boost1.34.nopython.
	(You can say fink install boost1.34.python25 boost1.34.systempython
boost1.34.nopython)
	
	Next install gtkmm2.4-dev, which installs many other packages on
which it depends, including
	gtk+2, glib, glibmm, libsig++, atk, pango, expat1, libpng3,
	automake, autoconf, libtool, pkgconfig
	
	Next, install these libraries:
	libglademm2.4 (also installs libglademm2.4-shlibs)
	
	cairomm1 (also installs cairomm1-shlibs, freetype219,
freetype219-shlibs etc; takes a LONG time)
	
	gtkglextmm (also installs gtkglextmm-shlibs, gtkglext1, gtkglext1-shlibs)
	
	Need freetype2, but freetype219 and freetype219-shlibs are installed
instead (by cairomm1).
	Because this does not put freetype2.pc into the usual place
(/sw/lib/pkgconfig),
	PKG_CONFIG_PATH is set in the configure script to find it.

You can test the pkgconfig machinery by executing the following:
	   pkg-config --libs pango (or /sw/bin/pkg-config --libs pango)
The output should be -L/sw/lib -lpango-1.0 -lm -lgobject-2.0
-lgmodule-2.0 -lglib-2.0 -lintl -liconv

Next cd into the vpython-core2 directory and execute chmod +x
autogen.sh, then ./autogen.sh
Here is what happens when I run autogen.sh:
/sw/share/aclocal/gtkglextmm-1.2.m4:225: warning:
          underquoted definition of AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD
  run info '(automake)Extending aclocal'
  or see http://sources.redhat.com/automake/automake.html#Extending-aclocal
configure.ac: installing `./missing'
Completed successfully

Apparently the warning about AC_GTKGLEXTMM_SUPPORTS_MULTIHEAD isn't
fatal, as it was possible
to build Visual.
	
After important help from Martin Costabel, I was able to make,
install, and run successfully.
I placed this file in a build directory at the same level as vpython-core2:
#!/bin/sh -ex
export CPPFLAGS="-Wno-long-double"
export PKG_CONFIG_PATH=/sw/lib/fontconfig2/lib/pkgconfig:/sw/lib/xft2/lib/pkgconfig:/sw/lib/freetype219/lib/pkgconfig
export PYTHON=/sw/bin/python2.5
export CXXFLAGS="-O2 -g -finline-functions"
export CFLAGS='-O3 -g '
../vpython-core2/configure --prefix=/sw --disable-dependency-tracking

If you call this file config.txt, in the build directory you need to execute
   chmod +x config.txt
to make the file be executable by "./config.txt".
	
Before making a change to src/Makefile.in, I got a message about
possible mismatch of versions,
as though when I build against /sw/bin/python2.5 and then run
/sw/bin/python2.5 the system thinks
these are different pythons. Martin Costabel commented:

"I am getting this, too, when using the dynamic boost-python library,
but not with the static
libboost_python-mt.a. This is certainly a bug with the
libboost_python-mt.dylib, but I haven't
yet found a combination of build flags to build it correctly, in
particular in a way that would
also work on OSX 10.5."

Following his suggestion, I put Mac-specific code into src/Makefile.in
to link to these other
libraries. But then I got this error message in the link phase of the make:

/usr/bin/ld: table of contents for archive:
/sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
load from it)

So I executed ranlib /sw/lib/libboost_python-mt.a, redid the make,
executed make install, and it worked.

When there looked to be a Boost problem, tried building Boost
libraries from scratch:

./configure --prefix=/sw --with-libraries=python,thread
--with-python=/sw/bin/python2.5
   (This creates user-config.jam)
make
   (apparently equivalent to bjam --user-config=user-config.jam
--with-python --with-thread)
sudo make install
There's a name issue; the boost includes need to be available at
/sw/include/boost, so do this:
cd /sw/include/boost_1_34_1
sudo cp -r boost /sw/include
I don't understand how /sw/include/boost is found. Looking at our
src/build.log, I don't see
anything that specifies we should look generally in /sw/include. Yet
when boost is buried in
boost_1_34_1, we don't find header files, and when it is unburied into
/sw/include/boost we do.

After a successfull make and "make install" invoking dynamic libraries,
copy these new boost files to /sw/lib/python2.5/site-packages:
bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib
bin.v2/libs/thread/build/darwin/release/threading-multi/libboost_thread-mt-1_34_1.dylib

But cvisual can't find a dylib:

Traceback (most recent call last):
  File "/sw/lib/python2.5/site-packages/visual/examples/bounce2.py",
line 1, in <module>
    from visual import *
  File "/sw/lib/python2.5/site-packages/visual/__init__.py", line 140,
in <module>
    import cvisual
ImportError: dlopen(/sw/lib/python2.5/site-packages/cvisualmodule.so,
2): Library not loaded:
bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
  Referenced from: /sw/lib/python2.5/site-packages/cvisualmodule.so
  Reason: image not found

I think I've seen stuff on the web about problems with locating dylibs.

Tried changing src/Makefile.in to use only static boost libraries:

  ifeq ($(PYTHON_PLATFORM),darwin)
    # Special rules for OSX
    CVISUAL_LIBS += $(filter-out $(_FILTER_OUT), $(GTK_LIBS) \
       $(GTHREAD_LIBS) /sw/lib/libboost_python-mt.a
/sw/lib/libboost_thread-mt.a)

This happened on the make:

/usr/bin/ld: table of contents for archive:
/sw/lib/libboost_python-mt.a is out of date; rerun ranlib(1) (can't
load from it)
/usr/bin/ld: table of contents for archive:
/sw/lib/libboost_thread-mt.a is out of date; rerun ranlib(1) (can't
load from it)

So I did this:

bruce-sherwoods-computer:~/Documents/workspace/build brucesherwood$ cd /sw/lib
bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_python-mt.a
Password:
bruce-sherwoods-computer:/sw/lib brucesherwood$ sudo ranlib libboost_thread-mt.a
ranlib: file: libboost_thread-mt.a(tss_hooks.o) has no symbols
ranlib: file: libboost_thread-mt.a(tss_dll.o) has no symbols
ranlib: file: libboost_thread-mt.a(tss_pe.o) has no symbols
bruce-sherwoods-computer:/sw/lib brucesherwood$

-----------------
Unsuccessful approach
bjam --prefix=/sw --toolset=darwin --with-python-version=2.5 --with-thread stage

Copy the directory named "boost" to /sw/include.

> cp stage/lib/libboost_thread-mt.a /sw/lib
> cp bin.v2/libs/python/build/darwin/release/link-static/threading-multi/libboost_python-mt-1_34_1.a /sw/lib/libboost_python.a

After a successfull make and "make install" invoking dynamic libraries,
copied these new boost files to /sw/lib/python2.5/site-packages:
stage/lib/libboost_thread-mt-1_34_1.dylib
bin.v2/libs/python/build/darwin/release/libboost_python-1_34_1.dylib
bin.v2/libs/python/build/darwin/release/threading-multi/libboost_python-mt-1_34_1.dylib

This attempt didn't help. Still get "Fatal Python error: Interpreter
not initialized (version mismatch?).
Is it possible that bjam worked against an old version of Python?
Maybe /user/bin/python (which is the
one I see with "which python" and which is version 2.3.5)? No reason
bjam should look for python in /sw.


On Sat, Jul 30, 2011 at 12:50 PM, K.-Michael Aye <kmi...@gm...> wrote:
> Dear all,
>
> I think the MAC-OSX.txt is missing in the most recent tar file for MAC, but it's referred to by INSTALL.txt and HACKING .txt.
> Is it just missing or do I not need it anymore because I should read and rely on INSTALL and HACKING?
>
> Best regards,
> Michael
>
>
> ------------------------------------------------------------------------------
> Got Input?   Slashdot Needs You.
> Take our quick survey online.  Come on, we don't ask for help often.
> Plus, you'll get a chance to win $100 to spend on ThinkGeek.
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> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>

Re: [Visualpython-users] render_surface: failed to initialize any OpenGL configuration

[JuanPabloAJ <jpa...@gm...>]

 ok,  

I installed the drivers, reboot and now work.  

Many thanks.
--  
JuanPabloAJ

El sábado 30 de julio de 2011 a las 15:36, Anton Hvornum escribió:

> Because you don't have any OpenGL drivers installed.
> Linux will boot with native graphic drivers which mainly just gets some graphics going, not to play games.
>  
> You need to install your graphic drivers to get some OpenGL drivers running, since vPython is built upon it.
>  
> On Sat, Jul 30, 2011 at 5:54 PM, JuanPabloAJ <jpa...@gm... (mailto:jpa...@gm...)> wrote:
> >  I don't know if I have the driver installed.
> >  
> > if I don't have a video card, I can use python ?
> > $ lsmod  
> > Module Size Used by
> > lp  10169 0  
> > parport 36936 1 lp
> > bnx2  78788 0  
> > psmouse 62080 0  
> > hed  2362 0  
> >  i7core_edac 18122 0  
> > serio_raw  4942 0  
> > edac_core 46822 3 i7core_edac
> > joydev  11171 0  
> > dcdbas 6942 0  
> > usbhid  41934 0  
> > hid 84486 1 usbhid
> > mptsas  52760 2  
> > mptscsih  37546 1 mptsas
> > mptbase 93593 2 mptsas,mptscsih
> > scsi_transport_sas  35585 1 mptsas
> >  
> >  
> > --  
> > JuanPabloAJ
> >  
> > El sábado 30 de julio de 2011 a las 4:10, Anton Hvornum escribió:
> >  
> > > Install your graphics driver, do you have nVidia or ATi?  
> > > On Jul 29, 2011 6:26 PM, "JuanPabloAJ" <jpa...@gm... (mailto:jpa...@gm...)> wrote:
> > > > Anton,  
> > > >  
> > > > $ glxinfo  
> > > > name of display: localhost:10.0
> > > > Error: couldn't find RGB GLX visual or fbconfig
> > > >  
> > > >  
> > > > --  
> > > > JuanPabloAJ
> > > >  
> > > > El viernes 29 de julio de 2011 a las 2:43, Anton Hvornum escribió:
> > > >  
> > > >> Could you give Us your output from the console when doing:
> > > >> glxinfo¦more
> > > >> Do you have mesa and NVIDIA drivers installed?
> > > >> Also Can you try running glxgears and see if you can?
> > > >> On Jul 29, 2011 5:52 AM, "JuanPabloAJ" <jpa...@gm... (mailto:jpa...@gm...) (mailto:jpa...@gm...)> wrote:
> > > >> > Hi,  
> > > >> > I have a ubuntu 10.10 and when i try use visual  
> > > >> >  
> > > >> > from visual import *
> > > >> > sphere()
> > > >> >  
> > > >> >  
> > > >> > I get this message  
> > > >> >  
> > > >> > VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.
> > > >> >  
> > > >> > any idea ?  
> > > >> >  
> > > >> > Many thanks.
> > > >> > --  
> > > >> > JuanPabloAJ
> > > >  
> >  
>  

[Visualpython-users] MAC-OSX.txt missing in tar file

[K.-Michael A. <kmi...@gm...>]

Dear all,

I think the MAC-OSX.txt is missing in the most recent tar file for MAC, but it's referred to by INSTALL.txt and HACKING .txt.
Is it just missing or do I not need it anymore because I should read and rely on INSTALL and HACKING?

Best regards,
Michael

Re: [Visualpython-users] render_surface: failed to initialize any OpenGL configuration

[JuanPabloAJ <jpa...@gm...>]

 I don't know if I have the driver installed.

if I don't have a video card, I can use python ?
$ lsmod  
Module Size Used by
lp  10169 0  
parport 36936 1 lp
bnx2  78788 0  
psmouse 62080 0  
hed  2362 0  
i7core_edac 18122 0  
serio_raw  4942 0  
edac_core 46822 3 i7core_edac
joydev  11171 0  
dcdbas 6942 0  
usbhid  41934 0  
hid 84486 1 usbhid
mptsas  52760 2  
mptscsih  37546 1 mptsas
mptbase 93593 2 mptsas,mptscsih
scsi_transport_sas  35585 1 mptsas


--  
JuanPabloAJ

El sábado 30 de julio de 2011 a las 4:10, Anton Hvornum escribió:

> Install your graphics driver, do you have nVidia or ATi?  
> On Jul 29, 2011 6:26 PM, "JuanPabloAJ" <jpa...@gm... (mailto:jpa...@gm...)> wrote:
> > Anton,  
> >  
> > $ glxinfo  
> > name of display: localhost:10.0
> > Error: couldn't find RGB GLX visual or fbconfig
> >  
> >  
> > --  
> > JuanPabloAJ
> >  
> > El viernes 29 de julio de 2011 a las 2:43, Anton Hvornum escribió:
> >  
> >> Could you give Us your output from the console when doing:
> >> glxinfo¦more
> >> Do you have mesa and NVIDIA drivers installed?
> >> Also Can you try running glxgears and see if you can?
> >> On Jul 29, 2011 5:52 AM, "JuanPabloAJ" <jpa...@gm... (mailto:jpa...@gm...) (mailto:jpa...@gm...)> wrote:
> >> > Hi,  
> >> > I have a ubuntu 10.10 and when i try use visual  
> >> >  
> >> > from visual import *
> >> > sphere()
> >> >  
> >> >  
> >> > I get this message  
> >> >  
> >> > VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.
> >> >  
> >> > any idea ?  
> >> >  
> >> > Many thanks.
> >> > --  
> >> > JuanPabloAJ
> >  

Re: [Visualpython-users] render_surface: failed to initialize any OpenGL configuration

[JuanPabloAJ <jpa...@gm...>]

Anton,  

$ glxinfo  
name of display: localhost:10.0
Error: couldn't find RGB GLX visual or fbconfig


--  
JuanPabloAJ

El viernes 29 de julio de 2011 a las 2:43, Anton Hvornum escribió:

> Could you give Us your output from the console when doing:
> glxinfo¦more
> Do you have mesa and NVIDIA drivers installed?
> Also Can you try running glxgears and see if you can?
> On Jul 29, 2011 5:52 AM, "JuanPabloAJ" <jpa...@gm... (mailto:jpa...@gm...)> wrote:
> > Hi,  
> > I have a ubuntu 10.10 and when i try use visual  
> >  
> > from visual import *
> > sphere()
> >  
> >  
> > I get this message  
> >  
> > VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.
> >  
> > any idea ?  
> >  
> > Many thanks.
> > --  
> > JuanPabloAJ

Re: [Visualpython-users] Toy program for variable size checkers grid

[K.-Michael A. <kmi...@gm...>]

On Jul 29, 2011, at 13:20 , Andreas Pavlogiannis wrote:

> Hi,
> 
> I 'm a new vpython user, trying to get familiar with working with 3D objects. In particular, I'm trying to understand how I can make an arbitrary checkers board with N rows and M columns. Unfortunately, taking the following sample code from http://www.vpython.org/contents/docs/visual/materials.html
> 
> from visual import *
> checkerboard = ( (0,1,0,1), 
>                  (1,0,1,0),
>                  (0,1,0,1),
>                  (1,0,1,0) )
> tex = materials.texture(data=checkerboard,
>                      mapping="rectangular",
>                      interpolate=False)
> box(axis=(0,0,1), color=color.cyan, material=tex)
> 
> and just adding some extra rows, columns, or both to the checkerboard variable does not work.
> Could you please give me some pointers on this?
> 
What's the error? How did you add 'some extra rows'? The obvious extension to 5 elements per element does not work? Like so:
(1,0,1,0,1),
(0,1,0,1,0),
etc. ?

Michael


> Thanks,
> Andreas
> ------------------------------------------------------------------------------
> Got Input?   Slashdot Needs You.
> Take our quick survey online.  Come on, we don't ask for help often.
> Plus, you'll get a chance to win $100 to spend on ThinkGeek.
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> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

[Visualpython-users] Toy program for variable size checkers grid

[Andreas P. <pau...@gm...>]

Hi,

I 'm a new vpython user, trying to get familiar with working with 3D 
objects. In particular, I'm trying to understand how I can make an 
arbitrary checkers board with N rows and M columns. Unfortunately, 
taking the following sample code from 
http://www.vpython.org/contents/docs/visual/materials.html

/from visual import *
checkerboard = ( (0,1,0,1),
                  (1,0,1,0),
                  (0,1,0,1),
                  (1,0,1,0) )
tex = materials.texture(data=checkerboard,
                      mapping="rectangular",
                      interpolate=False)
box(axis=(0,0,1), color=color.cyan, material=tex)/

and just adding some extra rows, columns, or both to the checkerboard 
variable does not work.
Could you please give me some pointers on this?

Thanks,
Andreas

[Visualpython-users] render_surface: failed to initialize any OpenGL configuration

[JuanPabloAJ <jpa...@gm...>]

Hi, 
I have a ubuntu 10.10 and when i try use visual 

from visual import *
sphere()


I get this message 

VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.

any idea ? 

Many thanks.
-- 
JuanPabloAJ

Re: [Visualpython-users] Textures and external models

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

In the VPython documentation, under "Work with objects", see
"Materials/Textures", where you'll find detailed information on
applying textures.

As for creating or importing arbitrary models, the key element is the
VPython "faces" object. An example of import can be found in the
contributed section of vpython.org: "Convert STL 3D graphics files
(Derek Lura and Bruce Sherwood)". I'll also point you to the extrusion
object, which makes it particularly easy to extrude an arbitrary 2D
surface along an arbitrary 3D curve.

Bruce Sherwood

On Tue, Jul 26, 2011 at 8:30 AM, Anton Hvornum <ant...@gm...> wrote:
> Hi.
> Information appears to be thin on this project even tho it's up to date.
> If there any documentation what so ever on how to add textures to objects
> and/or how to import external models into vPython (if that's supported).
> I've tried a few different 3D libs for Python such as Panda3D, Pyglet,
> Pygame and PyOpenGL but from what i can tell vPython is the most up-to-date
> while still being the smallest of them, and vPython supports 3D object right
> off the bat without having to implement to much mathematical stuff yourself.
> But as mentioned, is it possible to apply textures to objects and create
> your own objects either from within vPython or import external models?
> Best regards:
> Anton
> IT Tech and Developer
>
> ------------------------------------------------------------------------------
> Magic Quadrant for Content-Aware Data Loss Prevention
> Research study explores the data loss prevention market. Includes in-depth
> analysis on the changes within the DLP market, and the criteria used to
> evaluate the strengths and weaknesses of these DLP solutions.
> http://www.accelacomm.com/jaw/sfnl/114/51385063/
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
>

[Visualpython-users] Textures and external models

[Anton H. <ant...@gm...>]

Hi.

Information appears to be thin on this project even tho it's up to date.
If there any documentation what so ever on how to add textures to objects
and/or how to import external models into vPython (if that's supported).

I've tried a few different 3D libs for Python such as Panda3D, Pyglet,
Pygame and PyOpenGL but from what i can tell vPython is the most up-to-date
while still being the smallest of them, and vPython supports 3D object right
off the bat without having to implement to much mathematical stuff yourself.

But as mentioned, is it possible to apply textures to objects and create
your own objects either from within vPython or import external models?

Best regards:
Anton
IT Tech and Developer

Re: [Visualpython-users] VPython on Lion?

[Frank W. P. a. A. U of R <wo...@pa...>]

My installation on 10.6 continues to run fine in 10.7 (no changes were 
required).

Frank Wolfs

On Mon, 25 Jul 2011, Joe Heafner wrote:

> Has anyone tried VPython on OS X 10.7 (aka Lion) yet? I'm hoping I won't be the first.
>
> Joe Heafner
> Sent from one of my Macs
>
>
> ------------------------------------------------------------------------------
> Magic Quadrant for Content-Aware Data Loss Prevention
> Research study explores the data loss prevention market. Includes in-depth
> analysis on the changes within the DLP market, and the criteria used to
> evaluate the strengths and weaknesses of these DLP solutions.
> http://www.accelacomm.com/jaw/sfnl/114/51385063/
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
>


_____________________________________________________________________

  Frank L. H. Wolfs                  e-mail: wo...@pa...
  Department of Physics and Astronomy
  University of Rochester
  B&L 203A, RC Box 270171                      fax: (585) 273 - 3237
  500 Wilson Blvd.                           phone: (585) 643 - 5496
  Rochester, NY 14627              http://teacher.pas.rochester.edu/

[Visualpython-users] VPython on Lion?

[Joe H. <hea...@gm...>]

Has anyone tried VPython on OS X 10.7 (aka Lion) yet? I'm hoping I won't be the first.

Joe Heafner
Sent from one of my Macs

[Visualpython-users] Can I embed vpython into MFC Application?

[左明 <zuo...@gm...>]

I've been trying this all week. Using
PyRun_SimpleString(_T("execfile(\"bounce.py\")"));
the vpython window will get the focus and until the MFC application will be
unresponsive  it is closed.
Is there any way vpthon can work with mfc？

Re: [Visualpython-users] Memory leak when pos is changed

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

The discussion you found about a memory leak referred to a bug that
was fixed last March. From the "recent developments" section of
vpython.org: 2011-03-01 Visual 5.51: Fix memory leak on Windows and
Mac.

You've found a different memory leak, one that has not previously been
reported. The leak that was fixed was a bug in rendering the scene on
Windows and Mac, with the effect that setting object.visible = False
eliminated the leak. Setting object.visible = False in your program
doesn't make any difference: the leak is still there.

Thanks much for reporting this. At the moment I don't know what is
causing the leak. I note that commenting out make_normals, smooth, and
make_twosided has no effect on the leak. The leak is associated with
self.model.pos = self.vertices (but, I repeat, independent of whether
the faces object is visible or not). I also note that if one executes
m.Draw just once (putting a break at the end of the while loop), there
is no leak, confirming that the leak is not associated with the
repeated rendering that is automatically performed, unlike the case
with the old leak.

Since the problem is somehow associated with the statement
self.model.pos = self.vertices, I made a version of your program that
allocates once and for all the pos array, then assigns values to the
pos array rather than constructing a vertices array first. The
following program does not show a memory leak. This of course leaves
open the question of why there is a leak when one assigns an array to
faces.pos.

from visual import *

class Model:
    def __init__(self):
        self.frame = frame()
        self.model = faces(frame=self.frame, color=color.cyan, visible=True)

class Mesh (Model):
    def __init__(self, z):
        Model.__init__(self)
        self.length = (z.shape[0]-1)*(z.shape[1]-1)*6 # length of one-sided data
        self.model.pos = zeros( (2*self.length,3), float ) # space for
two-sided data

    def Update(self, xvalues, yvalues, zvalues):
        points = zeros( xvalues.shape + (3,), float )
        points[...,0] = xvalues
        points[...,1] = yvalues
        points[...,2] = zvalues

        p = 0
        for i in range(zvalues.shape[0]-1):
            for j in range(zvalues.shape[1]-1):
                self.model.pos[p  ] = points[i,j]
                self.model.pos[p+1] = points[i,j+1]
                self.model.pos[p+2] = points[i+1,j+1]
                self.model.pos[p+3] = points[i,j]
                self.model.pos[p+4] = points[i+1,j+1]
                self.model.pos[p+5] = points[i+1,j]
                self.model.pos[self.length+p  ] = points[i,j]
                self.model.pos[self.length+p+2] = points[i,j+1]
                self.model.pos[self.length+p+1] = points[i+1,j+1]
                self.model.pos[self.length+p+3] = points[i,j]
                self.model.pos[self.length+p+5] = points[i+1,j+1]
                self.model.pos[self.length+p+4] = points[i+1,j]
                p += 6
        self.model.make_normals()
        self.model.smooth()

x = arange(-1,1,2./20)
y = arange(-1,1,2./20)

z = zeros( (len(x),len(y)), float )
x,y = x[:,None]+z, y+z

m = Mesh(y)

i = 0
dt = 0.05
while True:
    m.Update( x, (sin(x*pi + i*dt)+sin(y*pi + i*dt))*0.2, y )
    i += 1
    rate(100)

Bruce Sherwood

On Fri, Jul 22, 2011 at 3:15 AM, Wojtek Frycz <woj...@gm...> wrote:
> Hi!
> I'm new to VPython project but I found a memory leak. There was something
> mentioned about this problem before. I found it here:
> http://sourceforge.net/mailarchive/forum.php?thread_name=AANLkTim8RL8kjW0%3DSK%2B9f-2A5TCQv6wAu9aTpBmisbNS%40mail.gmail.com&forum_name=visualpython-users.
> But unfortunately I didn't find the solution.

[Visualpython-users] visual-5.71 doesn't build with boost-1.47.0

[Thomas S. <to...@fe...>]

Hi list,

the subject says it all. Here is the error message:
./gtk2/random_device.cpp:30:63: error: 'const result_type
boost::random::random_device::min_value' is not a static member of
'class boost::random::random_device' ./gtk2/random_device.cpp:30:41:
error: uninitialized const
'boost::random::random_device::min_value' [-fpermissive] ./gtk2/random_device.cpp:31:63:
error: 'const result_type boost::random::random_device::max_value' is
not a static member of 'class
boost::random::random_device' ./gtk2/random_device.cpp:31:41: error:
uninitialized const
'boost::random::random_device::max_value' [-fpermissive] ./gtk2/random_device.cpp:39:42:
error: 'const char* const boost::random::random_device::default_token'
is not a static member of 'class boost::random::random_device'

Here is the full log of the build:
http://koji.fedoraproject.org/koji/getfile?taskID=3224810&name=build.log

Greetings,
   Thomas

[Visualpython-users] Memory leak when pos is changed

[Wojtek F. <woj...@gm...>]

Hi!
I'm new to VPython project but I found a memory leak. There was something
mentioned about this problem before. I found it here:
http://sourceforge.net/mailarchive/forum.php?thread_name=AANLkTim8RL8kjW0%3DSK%2B9f-2A5TCQv6wAu9aTpBmisbNS%40mail.gmail.com&forum_name=visualpython-users.
But unfortunately I didn't find the solution.

I want to use VPython to render a surface which is beeing changed during the
program execution. To show you what I'm talking about I changed one of the
example programs (faces_heighfield.py). Now it looks something like this:

<code>

from visual import *

class Model:
    def __init__(self):
        self.frame = frame()
        self.model = faces(frame=self.frame, color=color.cyan)
        self.vertices = []

    def FacetedTriangle(self, v1, v2, v3, color=color.white):
        """Add a triangle to the model"""
        for v in (v1,v2,v3):
            self.vertices.append(v)

    def FacetedPolygon(self, *v):
        """Appends a planar polygon of any number of vertices to the
model"""
        for t in range(len(v)-2):
            self.FacetedTriangle( v[0], v[t+1], v[t+2] )

class Mesh (Model):
    def __init__(self):
        Model.__init__(self)

    def Draw(self, xvalues, yvalues, zvalues):
        points = zeros( xvalues.shape + (3,), float )
        points[...,0] = xvalues
        points[...,1] = yvalues
        points[...,2] = zvalues

        self.vertices = []

        for i in range(zvalues.shape[0]-1):
            for j in range(zvalues.shape[1]-1):
                self.FacetedPolygon( points[i,j], points[i,j+1],
                                                points[i+1,j+1],
points[i+1,j] )

        self.model.pos = self.vertices
        self.model.make_normals()
        self.model.smooth()
        self.model.make_twosided()

x = arange(-1,1,2./20)
y = arange(-1,1,2./20)

z = zeros( (len(x),len(y)), float )
x,y = x[:,None]+z, y+z

m = Mesh()

i = 0
dt = 0.1
while True:
    m.Draw( x, (sin(x*pi + i*dt)+sin(y*pi + i*dt))*0.2, y )
    i += 1
    rate(10)

</code>

When running this code we see quite a nice surface movement. That is what I
need. But the memory usage grows infinitely!
My question is... is there any  fix for this memory leak? Or do you know
other way to achieve similar visual effect in VPython?

I also tried to render the surface using convexes or points instead of faces
but the memory leak always existed...

Thanks in advance for your help.

Greetings,
Wojciech Frycz

[Visualpython-users] Disabling Escape Key?

[Aaron M. <mav...@gm...>]

Simple question. Is it possible to disable the functionality of the
escape key (i.e. summarily shutting down my application) from within
Python? Setting scene.exit = False appears to stop it from exiting the
program entirely, but it still destroys the display window, and there
doesn't appear to be any way to get it back.*

My application involves interactive use over extended periods of time,
and accidentally hitting ESC in the middle of a run -- often an
intuitive thing to do, even for myself, the author of the software --
is a frustrating experience, to say the least.

Thanks!


* I am using Visual 5.4 on Gentoo Linux.

-- 
Aaron Mavrinac
www.mavrinac.com

Re: [Visualpython-users] Python 2.7 support status for Visual module?

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

Yes, it just works. There's no difference in the status of VPython for
2.6, 2.7, and 3.1

Bruce Sherwood

On Wed, Jul 20, 2011 at 3:05 AM, Russell Jones
<rus...@ph...> wrote:
> Hello,
> I'm trying to create a MacPorts port for visual, and I seem to be getting
> somewhere with the python 2.6 version (just rebuilding boost with python 2.6
> support which takes a while). However, we mostly use python 2.7 in our
> MacPorts installation, and I'd rather not build Boost with the 2.6 variant
> as it excludes 2.7 support. Thus it'd be good to create the port py27-visual
> as well as py26-visual.
> So I'm wondering, what's the status of 2.7 support? How would I find this
> out? I couldn't find an obvious tracking bug for 2.7 problems, or even
> anything that mentioned 2.7 in the title. Does it just work, then?
> Russell
> ------------------------------------------------------------------------------
> 10 Tips for Better Web Security
> Learn 10 ways to better secure your business today. Topics covered include:
> Web security, SSL, hacker attacks & Denial of Service (DoS), private keys,
> security Microsoft Exchange, secure Instant Messaging, and much more.
> http://www.accelacomm.com/jaw/sfnl/114/51426210/
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
>

Re: [Visualpython-users] Python 2.7 support status for Visual module?

[Mirko B. <mir...@ie...>]

Hi everybody,

for the record, I wrote a portfile for vpython on python 2.6 time ago, and I
think I also wrote an email to this list to advertise its availability.

At the time I submitted it for inclusion in the official MacPorts repository
but that was denied due to some issues that I did not have the time to
solve.
If anybody can still benefit from such portfile, please help yourself:
http://www.mip.sdu.dk/~mirko/macports/python/py26-visual.tgz

Bye,
Mirko

On Wed, Jul 20, 2011 at 11:05 AM, Russell Jones <
rus...@ph...> wrote:

>  Hello,
>
>  I'm trying to create a MacPorts port for visual, and I seem to be getting
> somewhere with the python 2.6 version (just rebuilding boost with python 2.6
> support which takes a while). However, we mostly use python 2.7 in our
> MacPorts installation, and I'd rather not build Boost with the 2.6 variant
> as it excludes 2.7 support. Thus it'd be good to create the port py27-visual
> as well as py26-visual.
>
>  So I'm wondering, what's the status of 2.7 support? How would I find this
> out? I couldn't find an obvious tracking bug for 2.7 problems, or even
> anything that mentioned 2.7 in the title. Does it just work, then?
>
>  Russell
>
>
> ------------------------------------------------------------------------------
> 10 Tips for Better Web Security
> Learn 10 ways to better secure your business today. Topics covered include:
> Web security, SSL, hacker attacks & Denial of Service (DoS), private keys,
> security Microsoft Exchange, secure Instant Messaging, and much more.
> http://www.accelacomm.com/jaw/sfnl/114/51426210/
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
>

[Visualpython-users] Python 2.7 support status for Visual module?

[Russell J. <rus...@ph...>]

Hello,

I'm trying to create a MacPorts port for visual, and I seem to be getting somewhere with the python 2.6 version (just rebuilding boost with python 2.6 support which takes a while). However, we mostly use python 2.7 in our MacPorts installation, and I'd rather not build Boost with the 2.6 variant as it excludes 2.7 support. Thus it'd be good to create the port py27-visual as well as py26-visual.

So I'm wondering, what's the status of 2.7 support? How would I find this out? I couldn't find an obvious tracking bug for 2.7 problems, or even anything that mentioned 2.7 in the title. Does it just work, then?

Russell

Re: [Visualpython-users] Mouse over/rollover

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

There's nothing built-in. I suppose you could constantly interrogate
scene.mouse.ray and figure out what was pointed at.

Bruce Sherwood

On Tue, Jul 19, 2011 at 8:55 PM, Dan Aldrich <dal...@ea...> wrote:
> Does vPython have a way to do a mouse over an object? I was looking
> for a method like in java where you know which object the mouse is
> over. May not be doable with a 3D display model.
>
> -d
>
>
>
> ------------------------------------------------------------------------------
> 10 Tips for Better Web Security
> Learn 10 ways to better secure your business today. Topics covered include:
> Web security, SSL, hacker attacks & Denial of Service (DoS), private keys,
> security Microsoft Exchange, secure Instant Messaging, and much more.
> http://www.accelacomm.com/jaw/sfnl/114/51426210/
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>

[Visualpython-users] Mouse over/rollover

[Dan A. <dal...@ea...>]

Does vPython have a way to do a mouse over an object? I was looking 
for a method like in java where you know which object the mouse is 
over. May not be doable with a 3D display model.

-d