MeshTools::all_rbb() to generate IGA rational quadratic meshes#4442
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roystgnr wants to merge 19 commits into
Open
MeshTools::all_rbb() to generate IGA rational quadratic meshes#4442roystgnr wants to merge 19 commits into
roystgnr wants to merge 19 commits into
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This takes an interpolated quadratic Lagrange mesh and turns it into an IGA (Rational Bezier-Bernstein) mapped mesh, assuming that all curves are intended to be circular/cylindrical/spherical.
1D on the X axis is pointless, but 1D meshes embedded in 2D or 3D space may still benefit from perfect circles.
This still gets us isogeometry on aligned cylinders, but also on cones and some types of spheres, and gets us a sort of optimality on non-exactly-representable surfaces.
It's the same either way but it just read wrong the other way.
I was about to stop capturing it, to fix an unused var warning, but this is better.
GiudGiud
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May 21, 2026
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| /** | ||
| * The goal of this test is to verify proper operation of the Mesh Extruder | ||
| * with the optional object callback for setting custom subdomain IDs. | ||
| * We pass a custom object for generating subdomains based on the old element | ||
| * ID and the current layer and assert the proper values. | ||
| */ |
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| /** | |
| * The goal of this test is to verify proper operation of the Mesh Extruder | |
| * with the optional object callback for setting custom subdomain IDs. | |
| * We pass a custom object for generating subdomains based on the old element | |
| * ID and the current layer and assert the proper values. | |
| */ |
or update
| const Real w = node->get_extra_datum<Real>(weight_index); | ||
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| CPPUNIT_ASSERT_EQUAL(Real(1), w); | ||
| } |
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volume should be easy to check too
as well as hmin/hmax ? these change with the mapping right
| MeshTools::Generation::build_sphere (interior_mesh, radius, | ||
| n_refinements, QUAD9); | ||
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| // Get just the outer EDGE9 circle mesh |
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| // Get just the outer EDGE9 circle mesh | |
| // Get just the outer EDGE3 circle mesh |
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| // We only use [4,8) but matching indices is nice and stack is | ||
| // cheap. | ||
| // that we're only using what we set, though. |
| almost_equal(w[22], w[24])) | ||
| extrude_dir = 0; | ||
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| if (almost_equal(w[0], w[3]) && |
| almost_equal(w[21], w[23])) | ||
| extrude_dir = 1; | ||
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| if (almost_equal(w[0], w[4]) && |
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This needs proper test coverage before merging but I've been letting it sit in a separate branch for too long and I want to at least make sure it's not interfering with any CI builds.