<!DOCTYPE html>
<html>
<head>
<title>cannon.js - collisions demo</title>
<meta charset="utf-8">
<link rel="stylesheet" href="css/style.css" type="text/css"/>
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
</head>
<body>
<script src="../build/cannon.js"></script>
<script src="../build/cannon.demo.js"></script>
<script src="../libs/dat.gui.js"></script>
<script src="../libs/Three.js"></script>
<script src="../libs/TrackballControls.js"></script>
<script src="../libs/Detector.js"></script>
<script src="../libs/Stats.js"></script>
<script src="../libs/smoothie.js"></script>
<script>
/**
* For debugging different kinds of pair collisions
*/
var demo = new CANNON.Demo();
demo.addScene("Sphere / sphere",function(){
var world = setupWorld(demo);
// Sphere 1
var sphereShape = new CANNON.Sphere(1);
var b1 = new CANNON.Body({ mass: 5 });
b1.addShape(sphereShape);
b1.position.set(5,0,0);
b1.velocity.set(-5,0,0);
b1.linearDamping = 0;
world.add(b1);
demo.addVisual(b1);
// Sphere 2
var b2 = new CANNON.Body({ mass: 5 });
b2.addShape(sphereShape);
b2.linearDamping = 0;
b2.position.set(-5,0,0);
b2.velocity.set(5,0,0);
world.add(b2);
demo.addVisual(b2);
});
// Sphere / box side
demo.addScene("Sphere / box side",function(){
var world = setupWorld(demo);
var boxShape = new CANNON.Box(new CANNON.Vec3(1,1,1));
var sphereShape = new CANNON.Sphere(1);
// Box
var b1 = new CANNON.Body({ mass: 5 });
b1.addShape(boxShape);
b1.position.set(5,0,0);
b1.velocity.set(-5,0,0);
b1.linearDamping = 0;
world.add(b1);
demo.addVisual(b1);
// Sphere
var b2 = new CANNON.Body({ mass: 5 });
b2.addShape(sphereShape);
b2.position.set(-5,0,0);
b2.velocity.set(5,0,0);
b2.linearDamping = 0;
world.add(b2);
demo.addVisual(b2);
});
demo.addScene("Sphere / box edge",function(){
var world = setupWorld(demo);
var boxShape = new CANNON.Box(new CANNON.Vec3(1,1,1));
var sphereShape = new CANNON.Sphere(1);
// Box
var b1 = new CANNON.Body({ mass: 5 });
b1.addShape(boxShape);
b1.position.set(5,0,0);
b1.velocity.set(-5,0,0);
b1.linearDamping = 0;
var q = new CANNON.Quaternion();
q.setFromAxisAngle(new CANNON.Vec3(0,0,1),Math.PI*0.25);
b1.quaternion.set(q.x,q.y,q.z,q.w);
world.add(b1);
demo.addVisual(b1);
// Sphere
var b2 = new CANNON.Body({ mass: 5 });
b2.addShape(sphereShape);
b2.position.set(-5,0,0);
b2.velocity.set(5,0,0);
b2.linearDamping = 0;
world.add(b2);
demo.addVisual(b2);
});
demo.addScene("Sphere / box corner",function(){
var world = setupWorld(demo);
var boxShape = new CANNON.Box(new CANNON.Vec3(1,1,1));
var sphereShape = new CANNON.Sphere(1);
// Box
var b1 = new CANNON.Body({ mass: 5 });
b1.addShape(boxShape);
b1.position.set(5,0,0);
b1.velocity.set(-5,0,0);
b1.linearDamping = 0;
var q1 = new CANNON.Quaternion();
q1.setFromAxisAngle(new CANNON.Vec3(0,0,1),Math.PI*0.25);
var q2 = new CANNON.Quaternion();
q2.setFromAxisAngle(new CANNON.Vec3(0,1,0),Math.PI*0.25);
var q = q1.mult(q2);
b1.quaternion.set(q.x,q.y,q.z,q.w);
world.add(b1);
demo.addVisual(b1);
// Sphere
var b2 = new CANNON.Body({ mass: 5 });
b2.addShape(sphereShape);
b2.position.set(-5,0,0);
b2.velocity.set(5,0,0);
b2.linearDamping = 0;
world.add(b2);
demo.addVisual(b2);
});
demo.start();
function setupWorld(demo){
// Create world
var world = demo.getWorld();
world.gravity.set(0,0,0); // no gravity
world.broadphase = new CANNON.NaiveBroadphase();
world.solver.iterations = 5;
world.defaultContactMaterial.contactEquationStiffness = 1e6;
world.defaultContactMaterial.contactEquationRelaxation = 10;
return world;
}
</script>
</body>
</html>
