commit 44fe65349618fb5c0c8a9f63761b81287875d160
Author: jniedzie <jeremi.niedziela@cern.ch>
Date:   Mon Nov 2 08:28:09 2015 +0100

    Update of getter for polylines in TEveTrackPropagator

diff --git a/graf3d/eve/inc/TEveTrackPropagator.h b/graf3d/eve/inc/TEveTrackPropagator.h
index f8709cd..385f53c 100644
--- a/graf3d/eve/inc/TEveTrackPropagator.h
+++ b/graf3d/eve/inc/TEveTrackPropagator.h
@@ -123,6 +123,8 @@ class TEveTrackPropagator : public TEveElementList,
    friend class TEveTrackPropagatorSubEditor;
 
 public:
+   const std::vector<TEveVector4D>& GetLastPoints()const {return fLastPoints;}
+    
    enum EStepper_e    { kHelix, kRungeKutta };
 
    enum EProjTrackBreaking_e { kPTB_Break, kPTB_UseFirstPointPos, kPTB_UseLastPointPos };
@@ -215,6 +217,7 @@ protected:
 
    // Propagation, state of current track
    std::vector<TEveVector4D> fPoints;        // Calculated point.
+   std::vector<TEveVector4D> fLastPoints;// Copy of the latest version of calculated points.
    TEveVectorD               fV;             // Start vertex.
    Helix_t                   fH;             // Helix.
 
diff --git a/graf3d/eve/src/TEveTrackPropagator.cxx b/graf3d/eve/src/TEveTrackPropagator.cxx
index 43b83bb..08df8b6 100644
--- a/graf3d/eve/src/TEveTrackPropagator.cxx
+++ b/graf3d/eve/src/TEveTrackPropagator.cxx
@@ -345,7 +345,9 @@ void TEveTrackPropagator::InitTrack(const TEveVectorF& v, Int_t charge)
 void TEveTrackPropagator::ResetTrack()
 {
    // Reset cache holding particle trajectory.
-
+    
+   fLastPoints.clear();
+   fPoints.swap(fLastPoints);
    fPoints.clear();
 
    // reset helix