Re: [DirectPython] Matrix functions

[Heikki S. <ho...@gm...>]

 



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From: dir...@li...
[mailto:dir...@li...] On Behalf Of M.
Utku Altinkaya
Sent: 26. helmikuuta 2007 6:22
To: dir...@li...
Subject: [DirectPython] Matrix functions


Hi,
 
Is there any way I can use  D3DXMatrixTranslation, D3DXMatrixRotation etc.
Also I was not able to find a Matrix class like d3dx.Vector, am I missing
something or are these not implemented. 
 

It is possible to use all those functions if you have ctypes installed
(Python 2.5 has it by default). You can use d3dx._d3dx9dll to determine
which dll you should use. There are several tutorials for ctypes and
"DirectX for comtypes" (see the SourceForge downloads) has few examples,
too. Check the directx.util and Frame.SetTransform() for a simple example.
 
D3DXMATRIX and other structs and functions are not currently exported
because ctypes is not always available and people often use other structs
instead (like NumPy matrices, arrays or raw memory). Basically D3DX matrix
is just a block of memory containing 16 floats so if you "know" the
alignment requirements and byte representation of a structure, you can pass
other things to functions which excpect a D3DXMATRIX (altough this is little
dangerous and not generally recommended).
 
--
Heikki Salo