Function Vector_CreatePyObject

source/blender/python/mathutils/mathutils_Vector.c:3124–3167

};

PyObject *Vector_CreatePyObject(const float *vec, const int size, PyTypeObject *base_type)
{
  VectorObject *self;
  float *vec_alloc;

  if (size < 2) {
    PyErr_SetString(PyExc_RuntimeError, "Vector(): invalid size");
    return NULL;
  }

  vec_alloc = PyMem_Malloc(size * sizeof(float));
  if (UNLIKELY(vec_alloc == NULL)) {
    PyErr_SetString(PyExc_MemoryError,
                    "Vector(): "
                    "problem allocating data");
    return NULL;
  }

  self = BASE_MATH_NEW(VectorObject, vector_Type, base_type);
  if (self) {
    self->vec = vec_alloc;
    self->size = size;

    /* init callbacks as NULL */
    self->cb_user = NULL;
    self->cb_type = self->cb_subtype = 0;

    if (vec) {
      memcpy(self->vec, vec, size * sizeof(float));
    }
    else { /* new empty */
      copy_vn_fl(self->vec, size, 0.0f);
      if (size == 4) { /* do the homogeneous thing */
        self->vec[3] = 1.0f;
      }
    }
    self->flag = BASE_MATH_FLAG_DEFAULT;
  }
  else {
    PyMem_Free(vec_alloc);
  }

  return (PyObject *)self;
}

/**
 * Create a vector that wraps existing memory.