How to use the planck-js.World function in planck-js
To help you get started, we’ve selected a few planck-js examples, based on popular ways it is used in public projects.
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grtlr / bubble-treemaps / src / implementation / algorithm / layoutplanck.js View on Github 
function layoutClusters(layerClusters, centroid) {
// Create world with zero gravity.
let world = planck.World({
gravity: planck.Vec2(0,0)
});
// Create bodies for groups.
let layerClusterBodies = [];
layerClusters.forEach(function(layerCluster) {
layerClusterBodies.push(createClusterBody(layerCluster, world));
});
// Create attractor.
let attractorBody = world.createBody(planck.Vec2(centroid.x, centroid.y));
// Create joints between layerClusterBodies and attractor.
layerClusterBodies.forEach(function(layerClusterBody) {
let distanceJoint = planck.DistanceJoint( {
frequencyHz : 0.9, // TODO: Try to avoid overlapping in large datasets!planck-js
2D JavaScript physics engine for cross-platform HTML5 game development
