Struct SoftBodyEdge 

pub struct SoftBodyEdge {
    pub vertices: [u32; 2],
    pub rest_length: f32,
    pub kind: SoftBodyEdgeKind,
    pub tension_only: bool,
    pub softness: Option<SpringCoefficients<f32>>,
    pub tear_resistance: f32,
    /* private fields */
}

A distance constraint between two particles of a soft body.

Fields

vertices: [u32; 2]

The two particles.

rest_length: f32

The distance the edge tries to maintain.

kind: SoftBodyEdgeKind

Structural or bending edge.

tension_only: bool

If true, the edge only resists stretching (a rope segment), never compression.

softness: Option<SpringCoefficients<f32>>

Softness of this edge, overriding the material’s (edge_softness / bend_softness) when set: anisotropic cloth (warp, weft and shear stiffness), stiffer seams…

tear_resistance: f32

Multiplier of the material’s tear thresholds for this edge (default 1.0): a seam that holds, a perforation that gives. Usually set through crate::dynamics::SoftBody::set_edge_tear_resistance or crate::dynamics::SoftBody::set_cluster_tear_resistance.

Implementations

impl SoftBodyEdge

pub fn impulse(&self) -> f32

The impulse this edge applied during the last substep, along the edge direction (positive when the edge was resisting stretching).

pub fn stress(&self) -> f32

Load of this edge as a fraction of its tear threshold, smoothed over SoftBodyMaterial::tear_smoothing: 0.0 slack, 1.0 tearing. The larger of the stretch over tear_strain and the force over tear_force; 0.0 while the material has neither.

impl SoftBodyEdge

pub fn plastic_strain(&self) -> f32

The permanent set of this edge: how far its rest length has flowed from the length it was created with, as a fraction of that length (negative: a squeeze that stayed, positive: a stretch that stayed; see SoftBodyMaterial::edge_plastic_yield).

pub fn initial_rest_length(&self) -> f32

The rest length this edge was created with (its rest_length before any plastic flow). The tear strain is measured against it, so plastic flow counts toward a tear.

Trait Implementations

impl Clone for SoftBodyEdge

fn clone(&self) -> SoftBodyEdge

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SoftBodyEdge

impl Debug for SoftBodyEdge

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

Formats the value using the given formatter.