Hi,
It seems there is a problem when attempting to access C members of an
extension type in special methods, such as __mul__ :
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
cdef extern from "btQuaternion.h":
cdef cppclass btQuaternion:
btQuaternion(float, float, float, float)
btQuaternion operator*(float)
float x()
float y()
float z()
float w()
cdef class Quaternion:
cdef btQuaternion *wrapped
def __init__(self, x, y, z, w):
self.wrapped = new btQuaternion(x, y, z, w)
def __dealloc__(self):
del self.wrapped
def __mul__(self, float other):
return from_c_obj(self.wrapped[0] * other) # Cannot convert
# Python object to
# 'btQuaternion'
cdef from_c_obj(btQuaternion quat):
"""
Construct a Quaternion instance from its C++ counterpart.
"""
return Quaternion(quat.x(), quat.y(), quat.z(), quat.w())
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Changing this code to something like :
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
def __mul(self, float other):
return from_c_obj(self.wrapped[0] * other)
def __mul__(self, float other):
return self.__mul(other)
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
Gives no error, and the code works as expected (all of this was tested
on the latest dev branch).
Cheers,
--
Lup
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