package flare.scale {
	import flare.util.Maths;
	import flare.util.Strings;

	/**
	 * Scale that spaces values linearly along the scale range. This is the
	 * default scale for numeric types.
	 */
	public class LinearScale extends QuantitativeScale
	{
		/**
		 * Creates a new LinearScale.
		 * @param min the minimum data value
		 * @param max the maximum data value
		 * @param base the number base to use
		 * @param flush the flush flag for scale padding
		 * @param labelFormat the formatting pattern for value labels
		 */
		public function LinearScale(min:Number=0, max:Number=0, base:Number=10,
			flush:Boolean=false, labelFormat:String=Strings.DEFAULT_NUMBER)
		{
			super(min, max, base, flush, labelFormat);
		}
		
		/** @inheritDoc */
		public override function get scaleType():String {
			return ScaleType.LINEAR;
		}
		
		/** @inheritDoc */
		public override function clone():Scale {
			return new LinearScale(_dmin, _dmax, _base, _flush, _format);
		}
		
		/** @inheritDoc */
		protected override function interp(val:Number):Number {
			return Maths.invLinearInterp(val, _smin, _smax);
		}
		
		/** @inheritDoc */
		public override function lookup(f:Number):Object {
			return Maths.linearInterp(f, _smin, _smax);
		}
		
	} // end of class LinearScale
}