Phil Thompson schrieb:
On Wed, 22 Jul 2009 20:13:45 +0200, "Diez B. Roggisch" <de...@web.de>
wrote:
Phil Thompson schrieb:
On Tue, 21 Jul 2009 11:07:19 +0200, "Diez B. Roggisch" <de...@web.de>
wrote:
On Tuesday 21 July 2009 10:43:14 Phil Thompson wrote:
On Tue, 21 Jul 2009 09:26:39 +0200, "Diez B. Roggisch" <de...@web.de>
wrote:
Hi,
well, the subject pretty much says it. The below code exectutes fine
in
the debugger until it reaches the line
irr::video::S3DVertex *vertex = (irr::video::S3DVertex
*)sipConvertToInstance(py_vertex, S3DVertexType, NULL, SIP_NOT_NONE,
NULL, &err);
where "err" then gets some seemingly random value & the program
terminates. The if-statement below the line doesn't work and was a
feeble attempt at error-handling - a subject that is given not much
more
information in the whole
http://www.riverbankcomputing.com/static/Docs/sip4/c_api.html
page.
Any suggestions? Ah, python is 2.6 on osx, SIP is 4.7.9.
Diez
void append(SIP_PYLIST, SIP_PYLIST);
%MethodCode
PyObject *py_vertices = a0;
PyObject *py_indices = a1;
irr::u32 numVertices = PyList_Size(py_vertices);
irr::video::S3DVertex *vertices = (irr::video::S3DVertex
*)sipMalloc(sizeof(irr::video::S3DVertex) * numVertices);
irr::u32 numIndices = PyList_Size(py_indices);
irr::u16 *indices = (irr::u16*)sipMalloc(sizeof(irr::u16) *
numIndices);
sipWrapperType *S3DVertexType =
sipFindClass("irr::video::S3DVertex");
int err;
for(irr::u32 i=0; i < numVertices; i++) {
PyObject *py_vertex = PyList_GetItem(py_vertices, i);
if(sipCanConvertToInstance(py_vertex, S3DVertexType, SIP_NOT_NONE))
{
irr::video::S3DVertex *vertex = (irr::video::S3DVertex
*)sipConvertToInstance(py_vertex, S3DVertexType, NULL, SIP_NOT_NONE,
NULL, &err);
if(err) {
return -1;
}
vertices[i] = *vertex;
} // TODO: raise an exception here!
}
for(irr::u32 i=0; i < numIndices; i++) {
PyObject *py_index = PySequence_GetItem(py_indices, i);
irr::u16 indices[3];
for(int j=0; j < 3; j++) {
PyObject *item = PySequence_GetItem(py_index, j);
if(PyLong_Check(item)) {
indices[j] = (irr::u16)PyLong_AsLong(item);
} else {
// TODO: raise an exception here!
}
}
}
sipCpp->append((void*)vertices, numVertices, indices,
numIndices);
sipFree(indices);
sipFree(vertices);
%End
What is S3DVertexType? I would expect it to start with 'sipClass_'.
It's a wrapped structure, with the original name
"irr::video::S3DVertex".
After reading the aforementioned docs, I was under the impression that
I
need
to get a sipTypeDef to check & convert. At least pointers of that kind
are
taken from sipConvertToInstance and sipCanConvertToInstance.
It needs to be what the documentation calls a "generated type object"
which
all begin with "sipClass_" - probably sipClass_irr_video_S3DVertex in
this
case.
I did that, without any success - the behavior is the same. I get err
set to the value "458520", and the program dies with an
bus-error/segfault.
I missed your call to sipFindClass().
Ah, ok, I was wondering if sip changed so much. Good to know it didn't,
but also good to know I can get a static reference & don't need the
extra call.
It's almost certainly a bug in your handwritten code somewhere - not
necessarily in the code above.
I don't doubt that - I just don't find it... I created some test-code
that toys around with S3DVertex-objecs, and all works fine. I can
construct them, I can compare them using their overloaded ==-operator
,which invokes
sipParseArgs(&sipArgsParsed,sipArg,"1JA",sipClass_irr_video_S3DVertex,&a0)
and that is working. I can access their members, some of them which are
mapped types.
Do you have any idea how to go about this - can I build SIP in
debug-mode, and then step into the conversion-code itself? How about
building the extension in debug-mode - it does have the "-g"-flag, but
also a -O3.
Diez
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