updateAABB: function(test){
var b = new Body();
b.updateAABB();
var b = new Body(),
s = new Circle({ radius: 1 });
b.addShape(s);
b.updateAABB();
test.equal(b.aabb.lowerBound[0], -1, 'Lower AABB bound should be -1');
test.equal(b.aabb.upperBound[0], 1, 'Upper AABB bound should be 1');
test.equal(b.aabb.lowerBound[1], -1, 'Lower AABB bound should be -1');
test.equal(b.aabb.upperBound[1], 1, 'Upper AABB bound should be 1');
var b = new Body(),
s = new Circle({ radius: 1 }),
offset = [-2,3];
b.addShape(s,offset,Math.PI/2);
b.updateAABB();
test.equal(b.aabb.lowerBound[0], -s.radius + offset[0]);
test.equal(b.aabb.upperBound[0], s.radius + offset[0]);
test.equal(b.aabb.lowerBound[1], -s.radius + offset[1]);
test.equal(b.aabb.upperBound[1], s.radius + offset[1]);
test.done();
},
collisionResponse: function(test){
var bodyA = new Body({ mass: 1, position: [1, 0] });
bodyA.addShape(new Circle({ radius: 1 }));
var bodyB = new Body({ mass: 1, position: [-1, 0] });
bodyB.addShape(new Circle({ radius: 1 }));
var world = new World();
world.addBody(bodyA);
world.addBody(bodyB);
world.step(1 / 60);
test.ok(world.narrowphase.contactEquations[0].enabled);
bodyA.collisionResponse = false;
world.step(1 / 60);
test.ok(!world.narrowphase.contactEquations[0].enabled);
bodyA.collisionResponse = true;
bodyA.shapes[0].collisionResponse = false;
world.step(1 / 60);
test.ok(!world.narrowphase.contactEquations[0].enabled);
test.done();
},
overlaps: function(test){
var bodyA = new Body({ mass: 1 });
var bodyB = new Body({ mass: 1 });
bodyA.addShape(new Circle());
bodyB.addShape(new Circle());
var world = new World();
world.addBody(bodyA);
world.addBody(bodyB);
world.step(1/60);
test.ok(bodyA.overlaps(bodyB));
test.done();
},
normal: function(test){
var body = new Body();
var shape = new Circle({ radius: 1 });
body.addShape(shape);
test.deepEqual(body.shapes, [shape]);
test.done();
},
canRemove: function(test){
var body = new Body();
body.addShape(new Circle({ radius: 1 }));
test.ok(body.removeShape(body.shapes[0]));
test.ok(!body.removeShape(new Circle({ radius: 1 })));
test.equal(body.shapes.length, 0);
test.done();
},
exports.removeShape = function(test){
var body = new Body();
body.addShape(new Circle(1));
test.ok(body.removeShape(body.shapes[0]));
test.ok(!body.removeShape(new Circle(1)));
test.equal(body.shapes.length, 0);
test.done();
};
withoutPoint: function(test){
var bodyA = new Body({ mass: 1, position: [2,3] });
bodyA.addShape(new Circle({ radius: 1 }));
bodyA.applyImpulse([-1,0]);
test.equal(bodyA.angularVelocity, 0);
test.ok(bodyA.velocity[0] !== 0);
test.equal(bodyA.velocity[1], 0);
test.done();
}
adjustCenterOfMass: function(test){
var body = new Body();
var shape = new Circle({ radius: 1 });
body.addShape(shape, [1, 0], 0);
body.adjustCenterOfMass();
test.deepEqual(body.position, vec2.fromValues(1,0));
test.deepEqual(body.shapes[0].position, vec2.fromValues(0,0));
test.done();
},
setDensity: function(test){
var body = new Body({ mass: 1 });
body.addShape(new Circle({ radius: 1 }));
var inertiaBefore = body.inertia;
body.setDensity(10);
test.equal(body.mass, body.getArea() * 10);
test.ok(inertiaBefore !== body.inertia);
test.done();
},
updateBoundingRadius: function(test){
var body = new Body({ mass: 1 });
var shape = new Circle({ radius: 1 });
body.addShape(shape);
test.equal(body.boundingRadius, 1);
shape.radius = 2;
shape.updateBoundingRadius();
body.updateBoundingRadius();
test.equal(body.boundingRadius, 2);
test.done();
},
withCCDAndObstacle: function(test){
var world = new World({ gravity: [0,0] });
var body = new Body({
velocity: [2,0],
position: [-1,0],
mass: 1,
ccdSpeedThreshold: 0,
ccdIterations: 10,
});
body.addShape(new Circle({ radius: 0.01 }));
world.addBody(body);
var planeBody = new Body({
mass: 0,
angle: Math.PI / 2
});
planeBody.addShape(new Plane());
world.addBody(planeBody);
world.step(1); // Need to use world.step() instead of body.integrate()
test.ok(vec2.distance(body.position, [0,0]) < 0.1);
test.done();
}
withoutPoint: function(test){
var bodyA = new Body({
mass: 1,
position: [2,3],
angle: Math.PI // rotated 180 degrees
});
bodyA.addShape(new Circle({ radius: 1 }));
bodyA.applyImpulseLocal([-1,0]);
test.equal(bodyA.angularVelocity, 0);
test.ok(bodyA.velocity[0] > 0);
test.ok(Math.abs(bodyA.velocity[1]) < 0.001);
test.done();
}
withPoint: function(test){
var bodyA = new Body({
mass: 1,
position: [2,3],
angle: Math.PI // rotated 180 degrees
});
bodyA.addShape(new Circle({ radius: 1 }));
bodyA.applyForceLocal([-1,0],[0,1]);
test.ok(bodyA.angularForce > 0);
test.ok(bodyA.force[0] > 0);
test.ok(Math.abs(bodyA.force[1]) < 0.001);
test.done();
},
duringStep: function(test){
var world = new World();
var body = new Body();
var shape = new Circle();
world.addBody(body);
body.addShape(shape);
world.on('postBroadphase', function(){
test.throws(function(){
body.removeShape(shape);
}, 'should throw on removing shapes during step');
test.done();
});
world.step(1);
}
getAABB: function(test){
var body = new Body();
body.addShape(new Box({ width: 1, height: 1 }));
test.deepEqual(body.getAABB(), new AABB({ lowerBound: [-0.5, -0.5], upperBound: [0.5, 0.5] }));
test.done();
},
test.throws(function(){
body.addShape(new Circle());
}, 'should throw on adding shapes during step');
getArea: function(test){
var body = new Body();
body.addShape(new Box({ width: 1, height: 1 }));
test.equal(body.getArea(), 1);
test.done();
},