TutorialForceFieldLiverFEM with objexporter

gistfile1.txt

<?xml version="1.0"?>
<Node 	 name="root"  gravity="0 -9.81 0"  dt="0.02"  >
	<VisualStyle name="visualStyle1"  displayFlags="showForceFields" />
	<DefaultPipeline name="CollisionPipeline"  verbose="0" />
	<BruteForceDetection name="N2" />
	<DefaultContactManager name="collision response"  response="default" />
	<DiscreteIntersection name="discreteIntersection1" />
	<Node 	 name="LiverFEM"  gravity="0 -9.81 0"  >
		<EulerImplicitSolver name="cg_odesolver"  printLog="0" />
		<CGLinearSolver template="GraphScattered" name="linear solver"  iterations="25"  tolerance="1e-09"  threshold="1e-09" />
		<MeshTopology name="mesh"  fileTopology="mesh/liver.msh" />
		<MechanicalObject template="Vec3d" name="dofs"  position="0 0 0"  velocity="0 0 0"  force="0 0 0"  externalForce="0 0 0"  restScale="1" />
		<TetrahedronFEMForceField template="Vec3d" name="FEM"  poissonRatio="0.45"  youngModulus="50"  gatherPt=" "  gatherBsize=" " />
		<UniformMass template="Vec3d" name="mass"  totalmass="1"  filename="unused" />
		<FixedConstraint template="Vec3d" name="FixedConstraint"  indices="3 39 64" />
		<Node 	 name="Visu"  gravity="0 -9.81 0"  >
			<OglModel template="ExtVec3f" name="VisualModel"  fileMesh="mesh/liver-smooth.obj"  primitiveType="DEFAULT"  blendEquation="GL_FUNC_ADD"  sfactor="GL_SRC_ALPHA"  dfactor="GL_ONE_MINUS_SRC_ALPHA" />
			<BarycentricMapping template="Vec3d,ExtVec3f" name="visual mapping"  input="@../dofs"  output="@VisualModel" />
			<OBJExporter name="oBJExporter0"  listening="1"  filename="/home/zahra/objexport"  exportEveryNumberOfSteps="1"  exportAtBegin="1"  exportAtEnd="1" />
		</Node>
		<Node 	 name="Surf"  gravity="0 -9.81 0"  >
			<SphereLoader name="SphereLoader"  filename="mesh/liver.sph"  position="-4 1.25 0 -4 1.25 1 -3 1.25 2.5 -4 2.25 -1 -4 2.25 0 -4 2.25 1 -3 2.25 -1 -3 2.25 0 -3 2.25 1 -3 2.25 2 -2 2.25 2 -4 3.25 -1 -4 3.25 0 -4 3.25 1 -3 3.25 -1 -3 3.25 0 -3 3.25 1 -3 3.25 2 -2 3.25 -1 -2 3.25 0 -2 3.25 1 -2 3.25 2 -1 3.25 2 0 3.25 2 -3 4.25 0 -3 4.25 1 -2 4.25 0 -2 4.25 1 -1 4.25 0 -1 4.25 1 0 4.25 0 0 4.25 1 1 4.25 0 1 4.25 1 -4 1.25 0 -4 1.25 1 -3 1.25 2.5 -4 2.25 -1 -4 2.25 0 -4 2.25 1 -3 2.25 -1 -3 2.25 0 -3 2.25 1 -3 2.25 2 -2 2.25 2 -4 3.25 -1 -4 3.25 0 -4 3.25 1 -3 3.25 -1 -3 3.25 0 -3 3.25 1 -3 3.25 2 -2 3.25 -1 -2 3.25 0 -2 3.25 1 -2 3.25 2 -1 3.25 2 0 3.25 2 -3 4.25 0 -3 4.25 1 -2 4.25 0 -2 4.25 1 -1 4.25 0 -1 4.25 1 0 4.25 0 0 4.25 1 1 4.25 0 1 4.25 1"  listRadius="0.85 0.85 0.35 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.35 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85" />
			<MechanicalObject template="Vec3d" name="mappedMS"  position="@[-1].position"  velocity="0 0 0"  force="0 0 0"  externalForce="0 0 0"  restScale="1" />
			<TSphereModel template="Vec3d" name="CollisionModel"  listRadius="@[-2].listRadius" />
			<BarycentricMapping template="Vec3d,Vec3d" name="sphere mapping"  input="@../dofs"  output="@mappedMS" />
		</Node>
	</Node>
</Node>