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Code Issues Wiki Activity

demo now allows body removal by right click

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liabru 2014-03-24 19:57:50 +00:00
parent f4636333c4
commit 2572107078
2 changed files with 59 additions and 5 deletions
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62
demo/js/Demo.js
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@ -11,7 +11,10 @@
Common = Matter.Common,
Constraint = Matter.Constraint,
RenderPixi = Matter.RenderPixi,
Events = Matter.Events;
Events = Matter.Events,
Bounds = Matter.Bounds,
Vector = Matter.Vector,
Vertices = Matter.Vertices;
var Demo = {};
@ -133,9 +136,60 @@
if (renderController.clear)
renderController.clear(_engine.render);
// clear events
if (Events)
Events.clear(_engine);
if (Events) {
// clear all events
Events.off(_engine);
// add event for deleting bodies and constraints with right mouse button
Events.on(_engine, 'mousedown', function(event) {
var mouse = event.mouse,
engine = event.source,
bodies = Composite.allBodies(engine.world),
constraints = Composite.allConstraints(engine.world),
i;
if (mouse.button === 2) {
// find if a body was clicked on
for (i = 0; i < bodies.length; i++) {
var body = bodies[i];
if (Bounds.contains(body.bounds, mouse.position)
&& Vertices.contains(body.vertices, mouse.position)) {
// remove the body that was clicked on
Composite.removeBody(engine.world, body, true);
}
}
// find if a constraint anchor was clicked on
for (i = 0; i < constraints.length; i++) {
var constraint = constraints[i],
bodyA = constraint.bodyA,
bodyB = constraint.bodyB;
// we need to account for different types of constraint anchor
var pointAWorld = constraint.pointA,
pointBWorld = constraint.pointB;
if (bodyA) pointAWorld = Vector.add(bodyA.position, constraint.pointA);
if (bodyB) pointBWorld = Vector.add(bodyB.position, constraint.pointB);
// if the constraint does not have two valid anchors, skip it
if (!pointAWorld || !pointBWorld)
continue;
// find distance between mouse and anchor points
var distA = Vector.magnitudeSquared(Vector.sub(mouse.position, pointAWorld)),
distB = Vector.magnitudeSquared(Vector.sub(mouse.position, pointBWorld));
// if mouse was close, remove the constraint
if (distA < 100 || distB < 100) {
Composite.removeConstraint(engine.world, constraint, true);
}
}
}
});
}
_engine.enableSleeping = false;
_engine.world.gravity.y = 1;

2
src/constraint/MouseConstraint.js
View file

@ -45,7 +45,7 @@ var MouseConstraint = {};
var mouse = mouseConstraint.mouse,
constraint = mouseConstraint.constraint;
if (mouse.button === 0 || mouse.button === 2) {
if (mouse.button === 0) {
if (!constraint.bodyB) {
for (var i = 0; i < bodies.length; i++) {
var body = bodies[i];