SparseGridMultipleTopology
Sparse grid in 3D
Target: Sofa.Component.Topology.Container.Grid
namespace: sofa::component::topology::container::grid
parents:
SparseGridRamificationTopology
Data:
| Name | Description | Default value |
|---|---|---|
| name | object name | unnamed |
| printLog | if true, emits extra messages at runtime. | 0 |
| tags | list of the subsets the objet belongs to | |
| bbox | this object bounding box | |
| componentState | The state of the component among (Dirty, Valid, Undefined, Loading, Invalid). | Undefined |
| listening | if true, handle the events, otherwise ignore the events | 0 |
| filename | Filename of the mesh | |
| position | List of point positions | |
| edges | List of edge indices | |
| triangles | List of triangle indices | |
| quads | List of quad indices | |
| tetrahedra | List of tetrahedron indices | |
| hexahedra | List of hexahedron indices | |
| uv | List of uv coordinates | |
| fillWeighted | Is quantity of matter inside a cell taken into account? (.5 for boundary, 1 for inside) | 1 |
| onlyInsideCells | Select only inside cells (exclude boundary cells) | 0 |
| n | grid resolution | 2 2 2 |
| min | Min | 0 0 0 |
| max | Max | 0 0 0 |
| cellWidth | if > 0 : dimension of each cell in the created grid | 0 |
| nbVirtualFinerLevels | create virtual (not in the animation tree) finer sparse grids in order to dispose of finest information (usefull to compute better mechanical properties for example) | 0 |
| dataResolution | Dimension of the voxel File | 0 0 0 |
| voxelSize | Dimension of one voxel | 1 1 1 |
| marchingCubeStep | Step of the Marching Cube algorithm | 1 |
| convolutionSize | Dimension of the convolution kernel to smooth the voxels. 0 if no smoothing is required. | 0 |
| facets | Input mesh facets | |
| finestConnectivity | Test for connectivity at the finest level? (more precise but slower by testing all intersections between the model mesh and the faces between boundary cubes) | 1 |
| fileTopologies | All topology filenames | [] |
| stiffnessCoefs | A stiffness coefficient for each topology filename | |
| massCoefs | A mass coefficient for each topology filename | |
| computeRamifications | Are ramifications wanted? | 1 |
| erasePreviousCoef | Does a new stiffness/mass coefficient replace the previous or blend half/half with it? | 0 |
| Visualization | ||
| drawEdges | if true, draw the topology Edges | 0 |
| drawTriangles | if true, draw the topology Triangles | 0 |
| drawQuads | if true, draw the topology Quads | 0 |
| drawTetrahedra | if true, draw the topology Tetrahedra | 0 |
| drawHexahedra | if true, draw the topology hexahedra | 0 |
Links:
| Name | Description |
|---|---|
| context | Graph Node containing this object (or BaseContext::getDefault() if no graph is used) |
| slaves | Sub-objects used internally by this object |
| master | nullptr for regular objects, or master object for which this object is one sub-objects |
Examples
Component/Topology/Container/Grid/SparseGridMultipleTopology.scn
<Node name="root" gravity="0 0 0" dt="0.02">
<RequiredPlugin name="Sofa.Component.Collision.Detection.Algorithm"/> <!-- Needed to use components [BVHNarrowPhase BruteForceBroadPhase CollisionPipeline] -->
<RequiredPlugin name="Sofa.Component.Collision.Detection.Intersection"/> <!-- Needed to use components [MinProximityIntersection] -->
<RequiredPlugin name="Sofa.Component.Collision.Geometry"/> <!-- Needed to use components [LineCollisionModel PointCollisionModel TriangleCollisionModel] -->
<RequiredPlugin name="Sofa.Component.Collision.Response.Contact"/> <!-- Needed to use components [CollisionResponse] -->
<RequiredPlugin name="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshOBJLoader] -->
<RequiredPlugin name="Sofa.Component.LinearSolver.Iterative"/> <!-- Needed to use components [CGLinearSolver] -->
<RequiredPlugin name="Sofa.Component.Mapping.Linear"/> <!-- Needed to use components [BarycentricMapping] -->
<RequiredPlugin name="Sofa.Component.Mass"/> <!-- Needed to use components [UniformMass] -->
<RequiredPlugin name="Sofa.Component.ODESolver.Backward"/> <!-- Needed to use components [EulerImplicitSolver] -->
<RequiredPlugin name="Sofa.Component.SolidMechanics.FEM.Elastic"/> <!-- Needed to use components [HexahedronFEMForceField] -->
<RequiredPlugin name="Sofa.Component.StateContainer"/> <!-- Needed to use components [MechanicalObject] -->
<RequiredPlugin name="Sofa.Component.Topology.Container.Constant"/> <!-- Needed to use components [MeshTopology] -->
<RequiredPlugin name="Sofa.Component.Topology.Container.Grid"/> <!-- Needed to use components [SparseGridMultipleTopology] -->
<RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
<CollisionPipeline depth="6" verbose="0" draw="0" />
<BruteForceBroadPhase/>
<BVHNarrowPhase/>
<MinProximityIntersection name="Proximity" alarmDistance="0.5" contactDistance="0.3" />
<CollisionResponse name="Response" response="PenalityContactForceField" />
<DefaultAnimationLoop/>
<Node name="frog with several stiffnesses">
<SparseGridMultipleTopology n="9 9 7" fileTopology="mesh/frog_body.obj" fileTopologies="mesh/frog_body.obj mesh/frog_eyes.obj mesh/frog_eyebrows.obj mesh/frog_lips.obj" stiffnessCoefs="10 100 100 .2" massCoefs="1 1 1 1" nbVirtualFinerLevels="1" />
<!-- body=soft, lips=very soft, eyes=very stiff-->
<!-- the order is important: included elements must appear after (lips is included in boby so it appears after)-->
<EulerImplicitSolver rayleighStiffness="0.1" rayleighMass="0.1" />
<CGLinearSolver iterations="10" tolerance="1e-5" threshold="1e-5"/>
<MechanicalObject />
<UniformMass vertexMass="1" />
<HexahedronFEMForceField youngModulus="3000" poissonRatio="0.3" method="large" updateStiffnessMatrix="false" printLog="0" />
<Node name="Visu1">
<MeshOBJLoader name="meshLoader_0" filename="mesh/frog_body.obj" handleSeams="1" />
<OglModel name="VisualBody" src="@meshLoader_0" normals="0" color="0.17 0.70 0.05" />
<BarycentricMapping input="@.." output="@VisualBody" />
</Node>
<Node name="Visu2">
<MeshOBJLoader name="meshLoader_2" filename="mesh/frog_eyes.obj" handleSeams="1" />
<OglModel name="VisualEyes" src="@meshLoader_2" normals="0" color="0.04 0.19 0.52" />
<BarycentricMapping input="@.." output="@VisualEyes" />
</Node>
<Node name="Visu3">
<MeshOBJLoader name="meshLoader_3" filename="mesh/frog_eyebrows.obj" handleSeams="1" />
<OglModel name="VisualEyebrows" src="@meshLoader_3" normals="0" color="0.44 0.43 0.00" />
<BarycentricMapping input="@.." output="@VisualEyebrows" />
</Node>
<Node name="Visu4">
<MeshOBJLoader name="meshLoader_1" filename="mesh/frog_lips.obj" handleSeams="1" />
<OglModel name="VisualLips" src="@meshLoader_1" normals="0" color="0.47 0.25 0.03" />
<BarycentricMapping input="@.." output="@VisualLips" />
</Node>
<Node name="Surf">
<MeshOBJLoader name="loader" filename="mesh/frog-push25.obj" />
<MeshTopology src="@loader" />
<MechanicalObject src="@loader" />
<TriangleCollisionModel />
<LineCollisionModel />
<PointCollisionModel />
<BarycentricMapping />
</Node>
</Node>
</Node>
def createScene(rootNode):
root = rootNode.addChild('root', gravity="0 0 0", dt="0.02")
root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Algorithm")
root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Detection.Intersection")
root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Geometry")
root.addObject('RequiredPlugin', name="Sofa.Component.Collision.Response.Contact")
root.addObject('RequiredPlugin', name="Sofa.Component.IO.Mesh")
root.addObject('RequiredPlugin', name="Sofa.Component.LinearSolver.Iterative")
root.addObject('RequiredPlugin', name="Sofa.Component.Mapping.Linear")
root.addObject('RequiredPlugin', name="Sofa.Component.Mass")
root.addObject('RequiredPlugin', name="Sofa.Component.ODESolver.Backward")
root.addObject('RequiredPlugin', name="Sofa.Component.SolidMechanics.FEM.Elastic")
root.addObject('RequiredPlugin', name="Sofa.Component.StateContainer")
root.addObject('RequiredPlugin', name="Sofa.Component.Topology.Container.Constant")
root.addObject('RequiredPlugin', name="Sofa.Component.Topology.Container.Grid")
root.addObject('RequiredPlugin', name="Sofa.GL.Component.Rendering3D")
root.addObject('CollisionPipeline', depth="6", verbose="0", draw="0")
root.addObject('BruteForceBroadPhase')
root.addObject('BVHNarrowPhase')
root.addObject('MinProximityIntersection', name="Proximity", alarmDistance="0.5", contactDistance="0.3")
root.addObject('CollisionResponse', name="Response", response="PenalityContactForceField")
root.addObject('DefaultAnimationLoop')
frog with several stiffnesses = root.addChild('frog with several stiffnesses')
frog with several stiffnesses.addObject('SparseGridMultipleTopology', n="9 9 7", fileTopology="mesh/frog_body.obj", fileTopologies="mesh/frog_body.obj mesh/frog_eyes.obj mesh/frog_eyebrows.obj mesh/frog_lips.obj", stiffnessCoefs="10 100 100 .2", massCoefs="1 1 1 1", nbVirtualFinerLevels="1")
frog with several stiffnesses.addObject('EulerImplicitSolver', rayleighStiffness="0.1", rayleighMass="0.1")
frog with several stiffnesses.addObject('CGLinearSolver', iterations="10", tolerance="1e-5", threshold="1e-5")
frog with several stiffnesses.addObject('MechanicalObject')
frog with several stiffnesses.addObject('UniformMass', vertexMass="1")
frog with several stiffnesses.addObject('HexahedronFEMForceField', youngModulus="3000", poissonRatio="0.3", method="large", updateStiffnessMatrix="false", printLog="0")
Visu1 = frog with several stiffnesses.addChild('Visu1')
Visu1.addObject('MeshOBJLoader', name="meshLoader_0", filename="mesh/frog_body.obj", handleSeams="1")
Visu1.addObject('OglModel', name="VisualBody", src="@meshLoader_0", normals="0", color="0.17 0.70 0.05")
Visu1.addObject('BarycentricMapping', input="@..", output="@VisualBody")
Visu2 = frog with several stiffnesses.addChild('Visu2')
Visu2.addObject('MeshOBJLoader', name="meshLoader_2", filename="mesh/frog_eyes.obj", handleSeams="1")
Visu2.addObject('OglModel', name="VisualEyes", src="@meshLoader_2", normals="0", color="0.04 0.19 0.52")
Visu2.addObject('BarycentricMapping', input="@..", output="@VisualEyes")
Visu3 = frog with several stiffnesses.addChild('Visu3')
Visu3.addObject('MeshOBJLoader', name="meshLoader_3", filename="mesh/frog_eyebrows.obj", handleSeams="1")
Visu3.addObject('OglModel', name="VisualEyebrows", src="@meshLoader_3", normals="0", color="0.44 0.43 0.00")
Visu3.addObject('BarycentricMapping', input="@..", output="@VisualEyebrows")
Visu4 = frog with several stiffnesses.addChild('Visu4')
Visu4.addObject('MeshOBJLoader', name="meshLoader_1", filename="mesh/frog_lips.obj", handleSeams="1")
Visu4.addObject('OglModel', name="VisualLips", src="@meshLoader_1", normals="0", color="0.47 0.25 0.03")
Visu4.addObject('BarycentricMapping', input="@..", output="@VisualLips")
Surf = frog with several stiffnesses.addChild('Surf')
Surf.addObject('MeshOBJLoader', name="loader", filename="mesh/frog-push25.obj")
Surf.addObject('MeshTopology', src="@loader")
Surf.addObject('MechanicalObject', src="@loader")
Surf.addObject('TriangleCollisionModel')
Surf.addObject('LineCollisionModel')
Surf.addObject('PointCollisionModel')
Surf.addObject('BarycentricMapping')