RotateModifier.prototype.checkAndUpdate = function(scrollPosition, delta) {
if ((this.scrollStart === undefined ||
scrollPosition >= this.scrollStart) &&
(this.scrollStop === undefined ||
scrollPosition <= this.scrollStop)) {
// Inside scroll range
this.rotateState = 'active';
this.theta = UnitConverter.degreesToRadians((scrollPosition - this.scrollStart) * this.scale);
} else if (((scrollPosition - delta) <= this.scrollStop) &&
(scrollPosition > this.scrollStop)) {
// Passing out of scroll range.
this.rotateState = 'upper';
this.theta = UnitConverter.degreesToRadians(this.scrollRange * this.scale);
} else if (((scrollPosition - delta) >= this.scrollStart) &&
(scrollPosition < this.scrollStart)) {
// Passing out of scroll range.
this.rotateState = 'lower';
this.theta = 0;
} else {
// out of range
this.rotateState = 'inactive';
}
};
function RotateToModifier(options) {
this.options = Object.create(RotateToModifier.DEFAULT_OPTIONS);
this._optionsManager = new OptionsManager(this.options);
if (options) this.setOptions(options);
this.actor = this.options.actor;
this.scrollStart = this.options.scrollStart;
this.scrollStop = this.options.scrollStop;
this.scrollRange = this.options.scrollStop - this.options.scrollStart;
this.curveFn = this.options.curveFn;
this.theta = 0;
this.startTheta = 0;
this.stopTheta = UnitConverter.degreesToRadians(this.options.angleInDegrees);
this.rotateState = 'inactive';
_setupAxis.call(this, this.options.axis);
_makeModifier.call(this);
Modifier.call(this, this.modifier);
}