From fd352c14f13ecdef7b8d4005c987d2f449c69430 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Fri, 11 Oct 2019 01:14:35 +0200
Subject: [PATCH] expose Roation.slerp to Python

---
 src/Base/RotationPy.xml    |  8 ++++++++
 src/Base/RotationPyImp.cpp | 12 ++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/src/Base/RotationPy.xml b/src/Base/RotationPy.xml
index 4bac43b9ae..528f6bbc10 100644
--- a/src/Base/RotationPy.xml
+++ b/src/Base/RotationPy.xml
@@ -73,6 +73,14 @@
 				</UserDocu>
 			</Documentation>
 		</Methode>
+        <Methode Name="slerp" Const="true">
+			<Documentation>
+				<UserDocu>
+					slerp(Rotation, Float) -> Rotation
+					Spherical linear interpolation of this and a given rotation. The float must be in the range of 0 and 1
+				</UserDocu>
+			</Documentation>
+		</Methode>
         <Methode Name="toEuler" Const="true">
 			<Documentation>
 				<UserDocu>
diff --git a/src/Base/RotationPyImp.cpp b/src/Base/RotationPyImp.cpp
index e38985e50c..28d5c7e5be 100644
--- a/src/Base/RotationPyImp.cpp
+++ b/src/Base/RotationPyImp.cpp
@@ -256,6 +256,18 @@ PyObject* RotationPy::multVec(PyObject * args)
     return new VectorPy(new Vector3d(vec));
 }
 
+PyObject* RotationPy::slerp(PyObject * args)
+{
+    PyObject *rot;
+    double t;
+    if (!PyArg_ParseTuple(args, "O!d", &(RotationPy::Type), &rot, &t))
+        return 0;
+    Rotation *rot0 = this->getRotationPtr();
+    Rotation *rot1 = static_cast<RotationPy*>(rot)->getRotationPtr();
+    Rotation sl = Rotation::slerp(*rot0, *rot1, t);
+    return new RotationPy(new Rotation(sl));
+}
+
 PyObject* RotationPy::toEuler(PyObject * args)
 {
     if (!PyArg_ParseTuple(args, ""))