Re: [Pyode-user] Initial (re)design questions

[Timothy S. <ti...@st...>]

On Wed, 2004-06-23 at 00:07, Matthias Baas wrote:
> And I think by using Pyrex we make it much=20
> easier to enable them to compile the module themselves. Pyrex is a small=20
> tool and it's easy to install and try out.

Agreed. I've had a look at your code and they Pyrex manual and I
definitely feel it is the best way to go.

> That's why I have
> a lookup table called "_geom_c2py_lut" in the module. This is just a=20
> dictionary that maps C pointers to Python objects. The problem now is,=20
> that Pyrex didn't support weak references at the time I was writing the=20
> module. As a result, I wasn't able to remove entries from this lookup=20
> table when the corresponding object was destroyed.

I noticed you have commented out the Space.addgeom(). Why is that?
Wouldn't it and a removegeom() method remove the need for a global geom
dictionary?

> Here's my opinion: I'd go for the C functions because they belong to the=20
> official and *documented* API.

Agreed.

> In general, I'm always in favour of a "Pythonic" interface, even if that
> would mean that we would have to change the original interface slightly.

Agreed.

> 7) What build system do we use?
> I would really recommend using the distutils as this is the standard way=20
> for distributing Python extension modules. It has the advantage that=20
> building the module works the same on every platform.

Agreed.

> 8) Shall we try to implement an XODE import/export in Python?
> This might raise the popularity of the Python version...

Yes. It looks pretty cool.

> 9) Which operating systems can we support directly?
> Or in other words: What systems are you working on? I'm mainly on=20
> Windows XP and can occasionally do tests on Linux (SuSE 8.2).

I'm working exclusively on Gentoo Linux.

> 10) ...what else?...

When I tried to import your PyODE in Python, it gave "undefined symbol:
__cxa_pure_virtual". After some Googling, I added "stdc++" to LIBS in
setup.py which fixed the problem. I think it's a problem with Gentoo's
ODE package.

Your collision tutorial demo has inspired me to work on PyODE again...

--=20
Timothy Stranex <ti...@st...>