[Cleanup] Friction writing: Rename: writer -> frictionWriter

src/one-body-sample.cc

@@ -280,14 +280,14 @@ int main(int argc, char *argv[]) {
         vertexCoordinates[vertexMapper.map(*it)] = geometry.corner(0);
       }
     }
-    FrictionWriter<ScalarVector, Vector> writer(vertexCoordinates,
-                                                frictionalNodes);
+    FrictionWriter<ScalarVector, Vector> frictionWriter(vertexCoordinates,
+                                                        frictionalNodes);
     auto const reportFriction = [&](Vector const &_u, Vector const &_v,
                                     ScalarVector const &_alpha) {
       ScalarVector c;
       myGlobalNonlinearity->coefficientOfFriction(_v, c);
-      writer.writeKinetics(_u, _v);
-      writer.writeOther(c, _alpha);
+      frictionWriter.writeKinetics(_u, _v);
+      frictionWriter.writeOther(c, _alpha);
     };
     reportFriction(u_initial, v_initial, alpha_initial);