[Bf-blender-cvs] [6912fe1] master: mathutils: let Vector.normalize() return the original length.

[Sybren A. Stüvel]

Commit: 6912fe132fbd37422ab62938cf2e823821cbbb2a
Author: Sybren A. Stüvel
Date:   Thu Jan 29 14:47:20 2015 +0100
Branches: master
https://developer.blender.org/rB6912fe132fbd37422ab62938cf2e823821cbbb2a

mathutils: let Vector.normalize() return the original length.

The length has to be calculated for normalization anyway, and it is already
returned by normalize_vn(vec, size).

===================================================================

M	source/blender/python/mathutils/mathutils_Vector.c

===================================================================

diff --git a/source/blender/python/mathutils/mathutils_Vector.c b/source/blender/python/mathutils/mathutils_Vector.c
index 167fb5b..640a335 100644
--- a/source/blender/python/mathutils/mathutils_Vector.c
+++ b/source/blender/python/mathutils/mathutils_Vector.c
@@ -349,6 +349,9 @@ PyDoc_STRVAR(Vector_normalize_doc,
 "\n"
 "   Normalize the vector, making the length of the vector always 1.0.\n"
 "\n"
+"   :return: the original length of the vector, before normalization\n"
+"   :rtype: float\n"
+"\n"
 "   .. warning:: Normalizing a vector where all values are zero has no effect.\n"
 "\n"
 "   .. note:: Normalize works for vectors of all sizes,\n"
@@ -356,14 +359,15 @@ PyDoc_STRVAR(Vector_normalize_doc,
 );
 static PyObject *Vector_normalize(VectorObject *self)
 {
+	float length;
 	int size = (self->size == 4 ? 3 : self->size);
 	if (BaseMath_ReadCallback(self) == -1)
 		return NULL;
 
-	normalize_vn(self->vec, size);
+	length = normalize_vn(self->vec, size);
 
 	(void)BaseMath_WriteCallback(self);
-	Py_RETURN_NONE;
+	return PyFloat_FromDouble(length);
 }
 PyDoc_STRVAR(Vector_normalized_doc,
 ".. method:: normalized()\n"