Creează un cont pentru a te abona la acest blog și a-i urmări articolele pe pagina Lectură.
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VBD’s per-vertex 3×3 solve already gives the locally optimal descent direction — there is no leverage left inside a single block.
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A practical primer covering exactly the quaternion operations used in rigid body simulation, with reference to the Newton AVBD implementation.
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This post derives the per-vertex 3×3 Hessian block for the stable Neo-Hookean tet material under VBD-style block Gauss-Seidel, and shows how it lands as an unconditionally PSD expression with no clamp or eigenvalue projection required.
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In the VBD paper (SIGGRAPH 2024), we briefly discuss extending Vertex Block Descent to rigid body simulation.
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Vertex Block Descent (VBD) is a physics solver we published at SIGGRAPH 2024 for elastic body dynamics.
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