Use viz::Path instead of viz::Polygon for adapting debug drawer line to ArViz

(Polygons with 2 points are invalid)

source/RobotAPI/components/DebugDrawerToArViz/DebugDrawerToArViz.cpp

@@ -144,8 +144,8 @@ namespace armarx
         {
             return;
         }
-        setAndCommit(layer, viz::Polygon(name).addPoint(toEigen(globalPosition1)).addPoint(toEigen(globalPosition2))
-                     .lineColor(toViz(color)).lineWidth(lineWidth).color(simox::Color::black(0)));
+        setAndCommit(layer, viz::Path(name).addPoint(toEigen(globalPosition1)).addPoint(toEigen(globalPosition2))
+                     .color(toViz(color)).width(lineWidth).color(simox::Color::black(0)));
     }
 
     void DebugDrawerToArViz::setLineSetVisu(const std::string& layerName, const std::string& name, const DebugDrawerLineSet& lineSet, const Ice::Current&)