Messages

61

Python / Help with PySFML

« on: January 14, 2012, 07:10:04 pm »

The default copy constructor may also be disabled, so I can only trust the documentation (since I was too lazy to read the source code).
Looks like I should add a copy() method, and maybe __copy__() too.

62

Python / Help with PySFML

« on: January 14, 2012, 01:32:52 pm »

Is it possible in C++? As far as I can tell, there's no copy constructor.

63

General discussions / A new logo for SFML

« on: January 12, 2012, 05:26:41 am »

These are my favorites:

Hmm, not so keen on it, but wasted some time on it, so here it is:



//edit: hehe, makes me think: soccer time! or time for Grolsch Beer  

The “circle” a bit bulky in my opinion, it distracts from the text.

A revision, this time with the correct text.

Really clean, but it needs a nicer font in my opinion.

Here's my attempt at the SFML logo!

Really nice!

64

General discussions / New naming convention

« on: January 10, 2012, 03:24:02 pm »

The arguments in favor of the get/is prefixes make sense -- except that I'll never write getBegin()/getEnd() in a container

Have you read this article? http://www.idinews.com/quasiClass.pdf

65

Python / PySFML 2?

« on: January 08, 2012, 01:10:32 am »

Are you sure that the git checkout ... command applies where you build the module? It looks like you're still using the latest SFML 2 version.

Edit: Laurent said that he's going to change the naming conventions on Monday, so I'm going to wait for that before updating the binding.

66

Python / PySFML 2?

« on: January 06, 2012, 11:12:27 pm »

Don't use “python”, on Arch Linux it invokes Python 3. Try “python2 setup.py build_ext --inplace”. It should drop the sf.so module file in the current directory.

67

Python / PySFML 2?

« on: January 06, 2012, 09:42:22 am »

The Git message is normal AFAIK.
If you want to set USE_CYTHON = False, you need to create sf.cpp yourself:

Code: [Select]

cython --cplus sf.pyx

68

Python / PySFML 2?

« on: January 06, 2012, 01:39:13 am »

Can you check that USE_CYTHON is True in setup.py?
I think you will need to type to that to use the oldest compatible SFML version:

Code: [Select]

git checkout 191730ac0d639cfdef8fae560cdbc7d7e8c67db1

69

Python / PySFML 2?

« on: January 05, 2012, 11:24:32 pm »

Cython is just a tool that I used to make this binding. It works on Python 2 and Python 3. I write the binding in the Cython language, the cython tool translates it to C++, then it can be compiled like any other Python extension module.

70

Python / PySFML 2?

« on: January 05, 2012, 10:07:46 pm »

I've created a Python binding for SFML 2: http://pysfml2-cython.readthedocs.org.
Currently it probably won't compile against the latest SFML 2 version, you'll need to back to before Laurent merged the “drawables” branch intro master. I'll try to fix that this weekend.

71

Python / error: command 'gcc' failed with exit status 1

« on: January 05, 2012, 10:05:55 pm »

You shouldn't use 1.6 in my opinion, it's unmaintained and 2.0 should be released pretty soon, it's already quite stable anyway.
If you choose to use pySFML 2 - Cython, be aware that it probably won't compile with the latest SFML 2 source until I fix it. :? You need to use the SFML source just before when Laurent merged the “drawables” branch.

72

Python / Help with PySFML

« on: December 21, 2011, 05:19:31 pm »

I have uploaded two new binary releases, for Python 2 and Python 3: https://github.com/bastienleonard/pysfml2-cython/downloads. Sorry for the delay.

Feedback is welcome.

73

Python / pysfml2-cython

« on: November 30, 2011, 03:52:01 am »

I have uploaded a new zip file with the standard libs statically linked, it should include all the dependencies now: https://github.com/downloads/bastienleonard/pysfml2-cython/python2-sfml2-cython-win32-nodeps.zip

For some reason, I couldn't the extra_link_args option the setup script, even though it's documented here: http://docs.python.org/distutils/setupscript.html#other-options
Does someone know if extra_link_args works on Windows? (In practice, modify the code to something like setup(extra_link_args=[], **kwargs) in setup.py.)

Well, I try this:
(in a pyx file)

Code: [Select]


cdef class Obj:      
    def python_method(self):    
        #operations
        pass
   
    cpdef cpython_method(self):
        #operations
        pass

import time

cdef Obj obj = Obj()

i = time.clock()

#cdef int x

for x in range(1000000):
    obj.python_method()

f = time.clock()

print "python_method %f" % (f-i)

i = time.clock()

for x in range(1000000):
    obj.cpython_method()

f = time.clock()

print "cpython_method %f" % (f-i)


I expected a fast loop with cpython_method, but there was only a little speed up. Then uncomment this "#cdef int x" and Voilá. Great speed up!(At least here, hundred of times faster).

I think this is nice i.e. for things like moving the main draw loop (that use Sprite.Draw)  in a cython 'for loop'.( Or any other loop that use a lot of python (slow)method calls)

Thanks, I'll look into that one of these days.

74

Python / Help with PySFML

« on: November 30, 2011, 03:47:06 am »

I have uploaded a new zip that should contain the compiled binding and all the dependencies: https://github.com/downloads/bastienleonard/pysfml2-cython/python2-sfml2-cython-win32-nodeps.zip

Hello, this is not official but this is how i do

1] Installing MinGW(http://sourceforge.net/projects/mingw/files/Installer/mingw-get-inst/mingw-get-inst-20111118/)
2] Adding MinGW\bin to WINDOWS path(can be added temporary)
4] getting sfml2 by git.
3] Installing cmake
5] launch cmake-gui, select sfml2-source-dir and sfml2-build-dir. Select the mingw generator and Configure->Generate.
7] now alt+r -> cmd -> cd sfml-build-dir -> mingw32-make -> mingw32-make install(as admin)
8] go to sfml_install_dir and copy directories "include" and "lib" to mingw_install_dir.
copy the dll inside bin to windows/system.

Now SFML should works..

PySFML
9] installing python 3.2 32bits
10] installing cython (http://www.lfd.uci.edu/~gohlke/pythonlibs/#cython) Cython-0.15.1.win32-py3.2.‌exe

11] Create distutils.cfg in C:\Python32\Lib\distutils\ if not exists and add
[build]
compiler=mingw32

12] In C:\Python32\Lib\distutils\cygwinccompiler.py from the class MinGW32CCompiler remove all -mno-cygwin

13] Now try to install : alt+r -> cmd -> cd pysfml  and
python setup3k.py build_ext
and finally
python setup.py build_ext install

good luck

The --compiler option doesn't work with Python 3? It's shown in the options list when I use build_ext --help.

I don't understand why anybody who has windows should bother to compile SFML and PySFML on his own. It's that stupid linux obsession to compile everything.

SFML 2 has no binary release, so I didn't want to make binary release unless necessary. The vast majority of Linux users never compile anything.

I think using MinGW is bad. Python was compiled in VC++ 2008.

The packager obviously had to choose one compiler, it doesn't mean that the others are bad.

75

Python / pysfml2-cython

« on: November 28, 2011, 08:29:02 pm »

In practice, the generated code is stil in C++, but obviously it needs to call the C/Python API. The vast majority of the methods are just there to map to the C++ equivalent. If someone really wanted to use raw C++, I guess he would call SFML directly.

I thought that cpdef would duplicate every method, but maybe I'm wrong. I should test it and see if it increases the module size.
Cython's documentation says that cdef/cpdef methods are virtual (here), i.e. you will automatically call the most specific method of an object. So I'm not sure whether it bypasses Python method resolution, I thought this was the only thing it could do to make calls faster. :?