先上代码

verlet.js 部分源码

VerletJS.prototype.lineSegments = function(vertices, stiffness) {
    var i;

    var composite = new this.Composite();

    for (i in vertices) {
        composite.particles.push(new Particle(vertices[i]));
        if (i > 0)
            composite.constraints.push(new DistanceConstraint(composite.particles[i], composite.particles[i-1], stiffness));
    }

    this.composites.push(composite);
    return composite;
}

如何使用

shapes.html 部分源码

var segment = sim.lineSegments([new Vec2(20,10), new Vec2(40,10), new Vec2(60,10), new Vec2(80,10), new Vec2(100,10)], 0.02);