verlet-js cloth

_.md

[ Launch: verlet-js cloth ] 5468778 by garyjbowles
[ Launch: verlet-js cloth ] 5431628 by enjalot
[ Launch: verlet-js ] 5431559 by enjalot

config.json

{"description":"verlet-js cloth","endpoint":"","display":"canvas","public":true,"require":[{"name":"verlet-js","url":"http://enjalot.github.io/verlet-js/verlet.js"}],"fileconfigs":{"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":false,"play":true,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01}

inlet.js

//verlet-js: http://subprotocol.com/2013/04/18/introducing-verlet-js.html
var width = tributary.sw;
var height = tributary.sh;

//particle style
var pstyle = {
  r: 2.2,
  fill: "rgba(16,141,122,0.5455872)",
  stroke: 0
}
var pinMod = 5;
var stiffness = 0.9856;

var sim, cloth;

tributary.init = function(ctx) {  
  // simulation
  sim = new VerletJS(width, height, tributary.canvas);
  sim.friction = 1;

  // entities
  var min = Math.min(width,height)*0.62;
  var segments = 11;
  cloth = sim.cloth(new Vec2(width/2,height/3), min, min, segments, pinMod, stiffness);
  console.log("sim", sim)
}

tributary.run = function(ctx, t) {
  
  cloth.drawParticles = function(ctx, composite) {
    var particles = cloth.particles;
    for(var i = 0; i < particles.length; i++) {
      var p = particles[i];

      ctx.beginPath();
      ctx.arc(p.pos.x, p.pos.y, pstyle.r, 0, 2*Math.PI);
      ctx.fillStyle = pstyle.fill;
      ctx.fill();
    }

  }

  
  if(sim) {
    sim.frame(120);
    sim.draw();
  }
}