var Clamp = require('../../math/Clamp'); 
var _FLAG = 2; 
var AlphaSingle = { 
_alpha: 1,
clearAlpha: function (){ 
return this.setAlpha(1); 
} 
,
setAlpha: function (value){ 
if (value === undefined) { 
value = 1; 
} 
this.alpha = value; 
return this; 
} 
,
alpha: { 
get: function (){ 
return this._alpha; 
} 
,
set: function (value){ 
var v = Clamp(value, 0, 1); 
this._alpha = v; 
if (v === 0) { 
this.renderFlags &= ~_FLAG; 
} 
 else { 
this.renderFlags |= _FLAG; 
} 
} 
}
}
; 
module.exports = AlphaSingle;