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// Park-Miller-Carta Pseudo-Random Number Generator
// https://github.com/pnitsch/BitmapData.js/blob/master/js/BitmapData.js
var PRNG = function () {
this.seed = 1;
this.next = function() {
return ( this.gen() / 2147483647 );
};
this.nextRange = function( min, max ) {
return min + ( ( max - min ) * this.next() )
};
this.gen = function() {
return this.seed = ( this.seed * 16807 ) % 2147483647;
};
};
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