diff options
Diffstat (limited to 'source/blender/python/mathutils/mathutils_Vector.c')
-rw-r--r-- | source/blender/python/mathutils/mathutils_Vector.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/source/blender/python/mathutils/mathutils_Vector.c b/source/blender/python/mathutils/mathutils_Vector.c index 387e560d946..82c4e70b657 100644 --- a/source/blender/python/mathutils/mathutils_Vector.c +++ b/source/blender/python/mathutils/mathutils_Vector.c @@ -1273,31 +1273,42 @@ static PyObject *Vector_slerp(VectorObject *self, PyObject *args) return Vector_CreatePyObject(ret_vec, size, Py_TYPE(self)); } -PyDoc_STRVAR(Vector_rotate_doc, - ".. function:: rotate(other)\n" - "\n" - " Rotate the vector by a rotation value.\n" - "\n" - " :arg other: rotation component of mathutils value\n" - " :type other: :class:`Euler`, :class:`Quaternion` or :class:`Matrix`\n"); +PyDoc_STRVAR( + Vector_rotate_doc, + ".. function:: rotate(other)\n" + "\n" + " Rotate the vector by a rotation value.\n" + "\n" + " .. note:: 2D vectors are a special case that can only be rotated by a 2x2 matrix.\n" + "\n" + " :arg other: rotation component of mathutils value\n" + " :type other: :class:`Euler`, :class:`Quaternion` or :class:`Matrix`\n"); static PyObject *Vector_rotate(VectorObject *self, PyObject *value) { - float other_rmat[3][3]; - if (BaseMath_ReadCallback_ForWrite(self) == -1) { return NULL; } - if (mathutils_any_to_rotmat(other_rmat, value, "Vector.rotate(value)") == -1) { - return NULL; + if (self->size == 2) { + /* Special case for 2D Vector with 2x2 matrix, so we avoid resizing it to a 3x3. */ + float other_rmat[2][2]; + MatrixObject *pymat; + if (!Matrix_Parse2x2(value, &pymat)) { + return NULL; + } + normalize_m2_m2(other_rmat, (const float(*)[2])pymat->matrix); + /* Equivalent to a rotation along the Z axis. */ + mul_m2_v2(other_rmat, self->vec); } + else { + float other_rmat[3][3]; - if (self->size < 3 || self->size > 4) { - PyErr_SetString(PyExc_ValueError, "Vector must be 3D or 4D"); - return NULL; - } + if (mathutils_any_to_rotmat(other_rmat, value, "Vector.rotate(value)") == -1) { + return NULL; + } - mul_m3_v3(other_rmat, self->vec); + mul_m3_v3(other_rmat, self->vec); + } (void)BaseMath_WriteCallback(self); Py_RETURN_NONE; |