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package com.senocular.gyro {
/**
* Seekers follow target properites at a constant rate.
* Does not work for non-property interpolations
*/
public class SeekConstant implements ISeek {
protected var _rate:Number;
/**
* A value between 0 and 1 representing how quickly
* a seeker approaches the target with every step
*/
public function get rate():Number {
return _rate;
}
public function set rate(n:Number):void {
_rate = n;
}
/**
* Constructor
*/
public function SeekConstant(rate:Number = 1){
_rate = rate;
}
/**
* Seek method; matches seeker properties
* to target properties based on the properties list
*/
public function call(interpolater:IInterpolate):void {
try {
var end:Number = Object(interpolater).end;
var prop:Object = interpolater.property;
var owner:* = interpolater.owner;
var diff:Number = end - owner[prop];
if (Math.abs(diff) < rate){
owner[prop] = end;
}else{
owner[prop] += (diff > 0) ? _rate : -_rate;
}
}catch(error:Error){
// a non-property interpolater; fail silently
}
}
}
}
