Struct BendingConstraint 

pub struct BendingConstraint {
    pub v0: usize,
    pub v1: usize,
    pub v2: usize,
    pub v3: usize,
    pub rest_angle: f64,
    pub stiffness: f64,
}

A bending constraint connecting four vertices that share a common edge.

The constraint resists deviation from the rest_angle dihedral angle.

Fields

v0: usize

First wing vertex index.

v1: usize

Edge vertex index (first).

v2: usize

Edge vertex index (second).

v3: usize

Second wing vertex index.

rest_angle: f64

Rest dihedral angle (radians).

stiffness: f64

Bending stiffness (N·m/rad).

Implementations

impl BendingConstraint

pub fn new( v0: usize, v1: usize, v2: usize, v3: usize, rest_angle: f64, stiffness: f64, ) -> Self

Create a new bending constraint.

pub fn compute_force(&self, verts: &[ClothVertex]) -> Vec<[f64; 3]>

Compute restoring forces on the four vertices.

Returns [f_v0, f_v1, f_v2, f_v3] — one [f64;3] force per vertex.

Trait Implementations

impl Clone for BendingConstraint

fn clone(&self) -> BendingConstraint

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BendingConstraint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.