DistanceConstraint

Extends: Constraint
Defined in: src/constraints/DistanceConstraint.js:14

Defines one or many relationships between sets of two particles.

var a = 0, b = 1, c = 2
var single = DistanceConstraint.create(10, a, b)
var many = DistanceConstraint.create(10, [a, b, a, c])

Particles are constrained by a fixed distance or a distance range.

var min = 0.5, max = 2.5
var fixed = DistanceConstraint.create(max, 0, 1)
var range = DistanceConstraint.create([min, max], 0, 1)

DistanceConstraint( distance, a, [b] )

src/constraints/DistanceConstraint.js:14

distance Float | Array

Distance or distance range [min, max] between particles
a Int | Array

Particle index or list of many constraint sets
[b] Int

Particle index (only used if a is not an array)

Methods
Properties

applyConstraint( index, p0, p1 ) protected

Defined in Constraint: src/constraints/Constraint.js:90

Apply constraint to one set of particles defining a constrint relation. Called _count times per relaxation loop.

index Int

Constraint set index
p0 Float32Array (Vec3)

Reference to ParticleSystem.positions
p1 Float32Array (Vec3)

Reference to ParticleSystem.positionsPrev

create( ) static

src/constraints/DistanceConstraint.js:48

Create instance, accepts constructor arguments.

setDistance( min, [max] )

src/constraints/DistanceConstraint.js:56

Set distance

min Float
[max] Float

setIndices( indices, [a] )

Defined in Constraint: src/constraints/Constraint.js:73

Set particle indices with Array or list of arguments.

indices Int | Array

Single or many particle indices
[a] Int (*..n)

Particle index

setMax( max )

src/constraints/DistanceConstraint.js:87

Set maximum distance

max Float

setMin( min )

src/constraints/DistanceConstraint.js:68

Set minimum distance

min Float

_count Int private

src/constraints/Constraint.js:37

Number of constraint relations managed by this instance

_itemSize Int private

src/constraints/Constraint.js:46

Number of particles per constraint relation

_max2 Float private

src/constraints/DistanceConstraint.js:97

Cached value of maximum distance squared

_min2 Float private

src/constraints/DistanceConstraint.js:78

Cached value of minimum distance squared

_offset Int private

src/constraints/Constraint.js:55

Number of indices to save at beginning of index array

indices Uint16Array

src/constraints/Constraint.js:29

Particle indices defining constraint relations

Three Point Square ^0.3.3