scratchfoundation/paper.js
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Change BouncingBalls example to use event.delta for throwing balls.

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This commit is contained in:
Jonathan Puckey 2011-02-21 15:32:59 +01:00
parent 0dfa2b7413
commit 44aa9254ea
1 changed files with 6 additions and 9 deletions

15
examples/Scripts/BouncingBalls.html
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@ -52,10 +52,10 @@
var Ball = Base.extend({
initialize: function(point, vector) {
if (vector.isZero()) {
if (!vector || vector.isZero()) {
this.vector = Point.random().multiply(5);
} else {
this.vector = vector;
this.vector = vector.multiply(1.5);
}
this.point = point;
this.dampen = 0.4;
@ -102,18 +102,15 @@
balls.push(ball);
}
var lastPoint;
var lastDelta;
tool = new Tool({
onMouseDown: function(event) {
lastPoint = event.point;
},
onMouseDrag: function(event) {
lastPoint = event.point;
lastDelta = event.delta;
},
onMouseUp: function(event) {
var delta = lastPoint.subtract(event.point);
var ball = new Ball(event.point, delta);
var ball = new Ball(event.point, lastDelta);
balls.push(ball);
lastDelta = null;
}
});
setInterval(draw, 30);