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TutorialTopologyLinearMesh

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Tutorial : Linear Mesh Topology

Contents

Example Scene showing the importance of mesh

This example is distributed in 
examples/Tutorials/Basic/TutorialTopologyLinearMesh.scn
within SofaSVN and SOFA distributions starting from 1.0 beta 4.

Graph


XML Description 

<?xml version="1.0" ?>
<!-- See https://wiki.sofa-framework.org/wiki/TutorialTopologyLinearMesh -->
 
<Node name="Root" gravity="0 -9.81 0" dt="0.02" showVisualModels="1" showBehaviorModels="1" showForceFields="1" showInteractionForceFields="1">
  <!-- Basic Components to perform the collision detection -->
  <DefaultPipeline name="DefaultCollisionPipeline" depth="6"/>
  <BruteForceDetection name="Detection"/>
  <MinProximityIntersection name="Proximity" alarmDistance="0.3" contactDistance="0.2"/>
  <DefaultContactManager name="Response"/>
  <DefaultCollisionGroupManager name="Group"/>
 
  <Node name="Pendulum Static Mesh">
    <MechanicalObject template="Vec3d" name="DOF" position="0 0 4 1 0 4 2 0 4 3 0 4 4 0 4 5 0 4"/>
    <UniformMass template="Vec3d" name="Mass" totalmass="1"/>
    <CGLinearSolver template="GraphScattered" name="CG solver"/>
    <EulerImplicitSolver name="EulerImplicit"/>
    <FixedConstraint template="Vec3d" name="Fixed dof" indices="0"/>
    <MeshTopology name="Static Mesh" edges="0 1  1 2  2 3  3 4  4 5 "/>
    <MeshSpringForceField template="Vec3d" name="springs"/>
  </Node>
 
  <Node name="Pendulum No Mesh"> 
    <MechanicalObject template="Vec3d" name="DOF" position="0 0 -4 1 0 -4 2 0 -4 3 0 -4 4 0 -4 5 0 -4"/>
    <UniformMass template="Vec3d" name="Mass" totalmass="1"/>
    <CGLinearSolver template="GraphScattered" name="CG solver"/>
    <EulerImplicitSolver name="EulerImplicit"/>
    <FixedConstraint template="Vec3d" name="Fixed dof" indices="0"/>
    <MeshTopology name="Static Mesh"/>
    <MeshSpringForceField template="Vec3d" name="springs"/>
  </Node>
 
</Node>

Example Scene Using different linear meshes (static, dynamic and regular)

This example is distributed in 
examples/Tutorials/Basic/TutorialTopologyLinearDifferentMesh.scn
within SofaSVN and SOFA distributions starting from 1.0 beta 4.

Graph

XML Description 

<?xml version="1.0" ?>
<!-- See https://wiki.sofa-framework.org/wiki/TutorialTopologyLinearMesh -->
 
<Node name="Root" gravity="0 -9.81 0" dt="0.02" showVisualModels="1" showBehaviorModels="1" showForceFields="1" showInteractionForceFields="1">
  <!-- Basic Components to perform the collision detection -->
  <DefaultPipeline name="DefaultCollisionPipeline" depth="6"/>
  <BruteForceDetection name="Detection"/>
  <MinProximityIntersection name="Proximity" alarmDistance="0.3" contactDistance="0.2"/>
  <DefaultContactManager name="Response"/>
  <DefaultCollisionGroupManager name="Group"/>
 
  <Node	name="Pendulum Static Mesh">
    <MechanicalObject template="Vec3d" name="DOF" position="0 0 -2 1 0 -2 2 0 -2 3 0 -2 4 0 -2 5 0 -2"/>
    <UniformMass template="Vec3d" name="Mass" totalmass="1"/>
    <CGLinearSolver template="GraphScattered" name="CG solver"/>
    <EulerImplicitSolver name="EulerImplicit"/>
    <FixedConstraint template="Vec3d" name="Fixed dof" indices="0"/>
    <MeshTopology name="Static Mesh" edges="0 1  1 2  2 3  3 4  4 5 "/>
    <MeshSpringForceField template="Vec3d" name="springs"/>
  </Node>
 
  <Node name="Pendulum Regular Mesh">
    <MechanicalObject template="Vec3d" name="DOF" position="0 0 6"/>
    <UniformMass template="Vec3d" name="Mass" totalmass="1"/>
    <CGLinearSolver template="GraphScattered" name="CG solver"/>
    <EulerImplicitSolver name="EulerImplicit"/>
    <FixedConstraint template="Vec3d" name="Fixed dof" indices="0"/>
    <RegularGridTopology name="Regular Mesh" n="6 1 1" min="0 0 6" max="5 1 6"/>
    <RegularGridSpringForceField template="Vec3d" name="springs"/>
  </Node>
 
  <Node	name="Pendulum Dynamic Mesh">
    <MechanicalObject template="Vec3d" name="DOF" position="0 0 2 1 0 2 2 0 2 3 0 2 4 0 2 5 0 2"/>
    <UniformMass template="Vec3d" name="Mass" totalmass="1"/>
    <CGLinearSolver template="GraphScattered" name="CG solver"/>
    <EulerImplicitSolver name="EulerImplicit"/>
    <FixedConstraint template="Vec3d" name="Fixed dof" indices="0"/>
    <EdgeSetTopologyContainer name="Dynamic Mesh" edges="0 1  1 2  2 3  3 4  4 5 "/>
    <MeshSpringForceField template="Vec3d" name="springs"/>
  </Node>
 
</Node>
Retrieved from "http://wiki.sofa-framework.org/wiki/TutorialTopologyLinearMesh"