[Bf-python] Generic Lib assign function problem.

[Campbell Barton]

Hi, Id like to make an generic assignment func.
so data with an ID can be assigned easerly

exampels are assigning an IPO to an object. texMesh to a mesh, world to 
a scene.

I came up with

int GenericLib_assignData(PyObject *value, void **data, short refcount, 
short type, short subtype)

It checks teh pyType is correct and assigns, or sets to NULL with 
Py_None as well as optionaly adjusting the refcount.

But Im having problems setting the pointer...

Does anyone know how to set a pointer of a struct, outside the main function


Eg.


set_mesh(void **data, Mesh *me)
{
	*data = me
}

.... somewhere else..
	set_mesh(&me->texcomesh, some_mesh)


Iv tried quite a few different things but no luck.

Heres the functions.


/* returns the Blender lib type code from a PyObject
    -1 for no match, only give this function libdata */
short GenericLib_getType(PyObject * pydata)
{
	if (BPy_Scene_Check(pydata))	return ID_SCE;
	if (BPy_Object_Check(pydata))	return ID_OB;
	if (BPy_Mesh_Check(pydata))		return ID_ME;
	if (BPy_Curve_Check(pydata))	return ID_CU;
	if (BPy_Metaball_Check(pydata))	return ID_MB;
	if (BPy_Material_Check(pydata))	return ID_MA;
	if (BPy_Texture_Check(pydata))	return ID_TE;
	if (BPy_Image_Check(pydata))	return ID_IM;
	//if (BPy_Lattice_Check(pydata))	return ID_LT;
	if (BPy_Lamp_Check(pydata))		return ID_LA;
	if (BPy_Camera_Check(pydata))	return ID_CA;
	if (BPy_Ipo_Check(pydata))		return ID_IP;
	if (BPy_World_Check(pydata))	return ID_WO;
	//if (BPy_Font_Check(pydata))		return ID_VF;
	if (BPy_Text_Check(pydata))		return ID_TXT;
	if (BPy_Sound_Check(pydata))	return ID_SO;
	if (BPy_Group_Check(pydata))	return ID_GR;
	if (BPy_Armature_Check(pydata))	return ID_AR;
	if (BPy_Action_Check(pydata))	return ID_AC;
	return -1;
}


int GenericLib_assignData(PyObject *value, void **data, short refcount, 
short type, short subtype)
{
	ID *id=NULL;
	
	if (*data)
		id = ((ID*)*data);
	
	if (value == Py_None) {
		*data = NULL;
		if (refcount && id) id->us--;
	} else if (GenericLib_getType(value) == type) {
		
		/* object subtypes */
		if (subtype != 0 && type == ID_OB) {
			Object *ob = Object_FromPyObject(value);
			if (ob->type != subtype) {
				return EXPP_ReturnIntError( PyExc_TypeError,
					"Object type not supported" );
			}
		}
		
		if (refcount && id) id->us--;
		id = ((BPy_GenericLib *)value)->id;
		id->us++;
		*data = id;
	} else {
		return EXPP_ReturnIntError( PyExc_TypeError,
				"Could not assign Python Type - None or Library Object" );
	}
	return 0;
}




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Campbell J Barton

133 Hope Street
Geelong West, Victoria 3218 Australia

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e-mail: cbarton at metavr.com
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