Created
April 10, 2012 18:30
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Crafty.c("AnchorPoint", {init: function() { this.requires("2D"); this._anchorPoint = [0.5,0.5]; this._defineGetterSetter_setter(); this._defineGetterSetter_defineProperty(); }, | |
_anchorPoint: [0.5,0.5], | |
_defineGetterSetter_setter: function() { | |
//create getters and setters using __defineSetter__ and __defineGetter__ | |
this.__defineSetter__('x', function (v) { this._attr('_x', v - this._anchorPoint[0] * this._w); }); | |
this.__defineSetter__('y', function (v) { this._attr('_y', v - this._anchorPoint[1] * this._h); }); | |
this.__defineSetter__('w', function (v) { this._attr('_w', v); this._origin.x=this._anchorPoint[0]*this._w; this.x = this.x; }); | |
this.__defineSetter__('h', function (v) { this._attr('_h', v); this._origin.y=this._anchorPoint[1]*this._h; this.y = this.y;}); | |
this.__defineSetter__('anchorPoint', function (v) { var xd = (v[0] - this._anchorPoint[0]) * this._w; this._x = this._x + xd; this._attr('_anchorPoint', v); this.origin(this._anchorPoint[0]*this._w,this._anchorPoint[1]*this._h); this._origin.x=this._anchorPoint[0]*this._w; this._origin.y=this._anchorPoint[1]*this._h; }); // holy messification | |
this.__defineGetter__('x', function () { return this._x + this._anchorPoint[0] * this._w; }); | |
this.__defineGetter__('y', function () { return this._y + this._anchorPoint[1] * this._h; }); | |
this.__defineGetter__('anchorPoint', function () { return this._anchorPoint; }); | |
}, | |
_defineGetterSetter_defineProperty: function() { | |
Object.defineProperty(this, 'x', { | |
set: function (v) { this._attr('_x', v - this._anchorPoint[0] * this._w); } | |
, get: function () { return this._x + this._anchorPoint[0] * this._w; } | |
, configurable: true | |
}); | |
Object.defineProperty(this, 'y', { | |
set: function (v) { this._attr('_y', v - this._anchorPoint[1] * this._h); } | |
, get: function () { return this._y + this._anchorPoint[1] * this._h; } | |
, configurable: true | |
}); | |
Object.defineProperty(this, 'w', { | |
set: function (v) { var x = this.x; this._attr('_w', v); this._origin.x=this._anchorPoint[0]*this._w; this.x = x; } | |
, get: function () { return this._w; } | |
, configurable: true | |
}); | |
Object.defineProperty(this, 'h', { | |
set: function (v) { var y = this.y; this._attr('_h', v); this._origin.y=this._anchorPoint[1]*this._h; this.y = y; } | |
, get: function () { return this._h; } | |
, configurable: true | |
}); | |
Object.defineProperty(this, 'anchorPoint', { | |
set: function (v) { var xd = (v[0] - this._anchorPoint[0]) * this._w; this._x = this._x - xd; var yd = (v[1] - this._anchorPoint[1]) * this._h; this._y = this._y - yd; this._attr('_anchorPoint', v); this.origin(this._anchorPoint[0]*this._w,this._anchorPoint[1]*this._h); this._origin.x=this._anchorPoint[0]*this._w; this._origin.y=this._anchorPoint[1]*this._h; } | |
, get: function () { return this._anchorPoint; } | |
, configurable: true | |
}); | |
}, | |
}); |
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