a single constraint, useful in a verlet system
npm install verlet-constraint
Creates a single 2D/3D constraint, useful in a verlet physics system.
``js
var Constraint = require('verlet-constraint')
var Point = require('verlet-point')
var points = [ Point(), Point() ]
var c = Constraint(points, { stiffness: 0.05, restingDistance: 15 })
//this pulls/pushes the two points
c.solve()
`
The points can be bare objects with position and optional mass. Mass defaults to 1.0.
`js`
var c = Constraint([ { position: [25, 25] }, { position: [50, 50], mass: 2 } ])
c.solve()
By default, assumes 2D and points with [x, y]. You can require an explicit dimension like so:
`js`
var Constraint2D = require('verlet-constraint/2d') //points [x, y]
var Constraint3D = require('verlet-constraint/3d') //points [x, y, z]
#### c = Constraint(points[, opt])
Creates a new constraint that operates on the two point objects given in the points array. Options:
- restingDistance the desired resting distance between the two points, defaults to using the distance between the two points during constructionstiffness
- the stiffness of the constraint, defaults to 1.0
#### c.solve()
Solves this constraint by pushing/pulling each point. If one of the points has a mass of zero, that body will be considered "unmovable".
#### c.points
An array of the point objects that were specified to this constraint.
#### c.restingDistance
The desired distance
#### c.stiffness`
The desired stiffness
MIT, see LICENSE.md for details.