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author | eug-vs <eugene@eug-vs.xyz> | 2024-12-15 13:17:43 +0100 |
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committer | eug-vs <eugene@eug-vs.xyz> | 2024-12-15 13:17:43 +0100 |
commit | 70afc5a7d871919776a64782e8b93404e6b0defd (patch) | |
tree | c3d8a273bddf4cbc3c55d06c751766b93b961a1f /src/constraint/anchor.rs | |
parent | 297efa5127e83bea57132c503680dd348a725db5 (diff) | |
download | particle-physics-70afc5a7d871919776a64782e8b93404e6b0defd.tar.gz |
feat!: add raylib rendering
Diffstat (limited to 'src/constraint/anchor.rs')
-rw-r--r-- | src/constraint/anchor.rs | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/src/constraint/anchor.rs b/src/constraint/anchor.rs deleted file mode 100644 index 3ef94ff..0000000 --- a/src/constraint/anchor.rs +++ /dev/null @@ -1,42 +0,0 @@ -use nalgebra::{DVector, RowDVector}; - -use crate::particle_system::{ParticleSystem, Point, Scalar, N}; - -use super::Constraint; - -pub struct AnchorConstraint { - pub particle_id: usize, - pub anchor: Point, - - jacobian: RowDVector<Scalar>, -} - -impl ParticleSystem { - pub fn add_anchor_constraint(&mut self, particle_id: usize) { - let anchor = self.particles[particle_id].position; - self.constraints.push(Box::new(AnchorConstraint { - particle_id, - anchor, - jacobian: RowDVector::zeros(self.particles.len() * N), - })); - } -} - -impl Constraint for AnchorConstraint { - fn get_particles(&self) -> Vec<usize> { - vec![self.particle_id] - } - - fn c(&self, q: &DVector<Scalar>) -> Scalar { - let position = q.fixed_rows(self.particle_id * N); - (position - self.anchor.coords).norm() - } - - fn set_jacobian(&mut self, jacobian: RowDVector<Scalar>) { - self.jacobian = jacobian - } - - fn jacobian_prev(&self) -> RowDVector<Scalar> { - self.jacobian.clone() - } -} |