[PyOpenGL-Users] How to call glMultMatrix passing an instance of KFbxXMatrix?

[Mark L. <mar...@pe...>]

Newb to both Python and OpenGL, so this may be a trivial question.

I have C sample code which looks like:

    void GlDrawCrossHair(KFbxXMatrix& pGlobalPosition)
    {
         glColor3f(1.0, 1.0, 1.0);
         glLineWidth(1.0);

         glPushMatrix();
         glMultMatrixd((double*) pGlobalPosition);
    ...

but when I try to write, in Python:


    def DrawCrosshair(pGlobalPosition):
         glColor3f(1.0,1.0,1.0)
         glLineWidth(1.0)

         glPushMatrix()
         glMultMatrixd(pGlobalPosition)



I get:

    ...
    File "C:/Users/Mark/Documents/Projects/MICA/MicaPython/Mica.py",
    line 141, in DrawCrosshair
         glMultMatrixd(pGlobalPosition)
       File "C:\Python26\lib\site-packages\OpenGL\latebind.py", line 45,
    in __call__
         return self._finalCall( *args, **named )
       File "C:\Python26\lib\site-packages\OpenGL\wrapper.py", line 569,
    in wrapperCall
         pyArgs = tuple( calculate_pyArgs( args ))
       File "C:\Python26\lib\site-packages\OpenGL\wrapper.py", line 354,
    in calculate_pyArgs
         yield converter(args[index], self, args)
       File
    "C:\Python26\lib\site-packages\OpenGL\arrays\arrayhelpers.py", line
    110, in asArraySize
         handler = typ.getHandler( incoming )
       File
    "C:\Python26\lib\site-packages\OpenGL\arrays\arraydatatype.py", line
    52, in __call__
         typ, repr(value)[:50]
    TypeError: ("No array-type handler for type <class
    'fbx.KFbxXMatrix'> (value: <fbx.KFbxXMatrix object at
    0x0000000003AE01C8>) registered", <function asArraySize at
    0x00000000035C5CF8>)
    GLUT Display callback <function display at 0x0000000003954CF8> with
    (),{} failed: returning None ("No array-type handler for type <class
    'fbx.KFbxXMatrix'> (value: <fbx.KFbxXMatrix object at
    0x0000000003AE01C8>) registered", <function asArraySize at
    0x00000000035C5CF8>)


This must be a simple operation but I cannot find any examples to go by.

I'm running on Windows Vista, Python 2.6.6, and PyOpenGl 3.0.1.


Thanks in advance,


Mark