bullet.pxd:
cdef extern from "bullet/LinearMath/btVector3.h":
cdef cppclass btVector3:
btVector3(float, float, float) except +
btVector3 operator+(const btVector3&, const btVector3&)
btmath.pyx:
cimport bullet as bt
cdef class Vector:
cdef bt.btVector3* _this
def __cinit__(self, float x=0, float y=0, float z=0):
self._this = new bt.btVector3(x, y, z)
def __add__(Vector self, Vector other):
vec = Vector()
del vec._this
vec._this[0] = self._this[0] + other._this[0]
return vec
btVector3.h中operator +的原型:
SIMD_FORCE_INLINE btVector3
operator+(const btVector3& v1, const btVector3& v2);
如标题所述,我得到“'''(btVector3; btVector3)的无效操作数类型”。我猜它有一些关于Cython如何处理传递引用的东西,可能吗?
非常感谢任何帮助。
答案 0 :(得分:2)
事实证明,在这种情况下,Cython将“this”参数视为隐式,因此bullet.pxd应如下所示:
cdef extern from "bullet/LinearMath/btVector3.h":
cdef cppclass btVector3:
btVector3(float, float, float) except +
btVector3 operator+(btVector3)
非常感谢Robert Bradshaw,帮助我解决这个问题:https://groups.google.com/forum/#!topic/cython-users/8LtEE_Nvf0o