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Introduces a new "strain" equality mode (flex_edgeequality = 3) for flexcomps with trilinear interpolation. This mode enforces constraints on the three invariants of the Green-Lagrange strain tensor at 8 Gauss quadrature points within each flex element, resulting in 24 equality constraints per flexcomp.

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Also fixes a bug when attaching a flex with constraints.

PiperOrigin-RevId: 881349765
Change-Id: I8e6df8239488bfdc87d7e5b473568975e38c737e
This commit is contained in:
Alessio Quaglino
2026-03-10 04:25:19 -07:00
committed by Copybara-Service
parent fe6c81ed93
commit 713b5524bc
23 changed files with 899 additions and 48 deletions
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src/xml/xml_native_reader.h
+1 -1
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@@ -102,7 +102,7 @@ class mjXReader : public mjXBase {
};
// MJCF schema
#define nMJCF 245
#define nMJCF 246
extern std::vector<const char*> MJCF[nMJCF];
#endif // MUJOCO_SRC_XML_XML_NATIVE_READER_H_