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Implement projection onto the zero subspace

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Aaron Fenyes 2024-12-18 00:25:15 -08:00
parent 971a7ca7e2
commit dc067976eb
1 changed files with 8 additions and 6 deletions
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8
app-proto/src/engine.rs
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@ -141,15 +141,17 @@ impl ConfigSubspace {
// find the projection onto this subspace of the motion where the element // find the projection onto this subspace of the motion where the element
// with the given column index has velocity `v` // with the given column index has velocity `v`
/* TO DO */
// for the zero subspace, this method's behavior doesn't match its name: it
// panics rather than returning zero
pub fn proj(&self, v: &DVectorView<f64>, column_index: usize) -> DMatrix<f64> { pub fn proj(&self, v: &DVectorView<f64>, column_index: usize) -> DMatrix<f64> {
if self.dim() == 0 {
const ELEMENT_DIM: usize = 5;
DMatrix::zeros(ELEMENT_DIM, self.assembly_dim)
} else {
self.basis.iter().map( self.basis.iter().map(
|b| b.column(column_index).dot(&v) * b |b| b.column(column_index).dot(&v) * b
).sum() ).sum()
} }
} }
}
// --- descent history --- // --- descent history ---