Carving Grid topology

[Seria]

Hello Friends.
How can we use Carving on a Grid Topology?

Thank you.

[Hugo]

Hi @masoud

I have not been using the Carving plugin for a long time. I therefore do not know whether the carving is supported on GridTopo (i.e. Hexa topology). Maybe you need to use a Tetrahedral topology instead.

@epernod would you know this?

Best

Hugo

[Binesh]

Hello.
I worked on this problem about 3 days and finally found a solution.
I will share my solution soon here.
Thank you for your attention.

[Hugo]

Great to hear Binesh! thanks for sharing so much @secretdevil!
Looking forward to your simulation scene

[epernod]

Hi,

yes you need a tetrahedron topology. I checked and only triangle model collision is working well at the moment. So you will need something like (code not tested):

<CarvingManager active="true" />
<Node name="Grid" >
    <RegularGrid name="HexaTop" n="12 12 12" min="-10 -6 -10" max="10 14 10" />
    <MechanicalObject name="ms" position="@HexaTop.position" />
    <TetrahedronSetTopologyContainer name="Container" position="@HexaTop.position" />
    <TetrahedronSetTopologyModifier name="Modifier"/>
    <Hexa2TetraTopologicalMapping input="@HexaTop" output="@Container" swapping="false" />
</Node>
<Node name="Surface" >
    <TriangleSetTopologyContainer name="Container"/>
    <TriangleSetTopologyModifier name="Modifier"/>
    <Tetra2TriangleTopologicalMapping input="@../Grid/Container" output="@Container" flipNormals="true"/>
    <TriangleSet name="triangleCol" tags="CarvingSurface"/>
</Node>

<Node name="carvingElement">
		<MechanicalObject name="Particles" template="Vec3d" position="0 0 1.4" velocity="0 0 0"/>
		<UniformMass name="Mass" totalMass="1.0" />
		<SphereModel radius="0.02" tags="CarvingTool"/>
  </Node>

++Erik

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