package util
{
	import flash.display.GradientType;
	import flash.display.Graphics;
	import flash.geom.Point;
	import flash.geom.Rectangle;
 
	import mx.charts.ChartItem;
	import mx.charts.ColumnChart;
	import mx.charts.chartClasses.LegendData;
	import mx.core.Application;
	import mx.core.IDataRenderer;
	import mx.core.UIComponent;
 
	public class ThermalColumnChartRenderer extends UIComponent implements IDataRenderer
	{
 
	    public function ThermalColumnChartRenderer():void
	    {
	        super();
	    }
	    private var chartItem:ChartItem;
 
		public function set data(value:Object):void
	    {
	        if (chartItem == value)
	            return;
 
	        if (value is LegendData)
	        	return;
	        chartItem = ChartItem(value);
	    }	
 
	    public function get data():Object
	    {
	        return chartItem;
	    }
 
	    override protected function updateDisplayList(unscaledWidth:Number,unscaledHeight:Number):void
	    {
	        super.updateDisplayList(unscaledWidth, unscaledHeight);
 
	        // Convert the pixel location into the chart location
	        var curValue:Number = convertDataToLocal(chartItem.itemRenderer.y);
 
	        var rc:Rectangle = new Rectangle(0, 0, width , height );
	        var columnColor:uint;
	        var g:Graphics = graphics;
		g.clear();
		g.moveTo(rc.left,rc.top);
		g.lineStyle(2);
 
		// Use thermal class to convert our 0-100 value to a color
		g.beginFill(getThermalColor(curValue));	  	
 
	        g.lineTo(rc.right,rc.top);
	        g.lineTo(rc.right,rc.bottom);
	        g.lineTo(rc.left,rc.bottom);
	        g.lineTo(rc.left,rc.top);
	        g.endFill();
  		}
 
  		private function getThermalColor(num:Number):Number
  		{
  			return Application.application.thermalColor.getColor(num);
  		}
 
	    private function convertDataToLocal(yNum:Number):Number
	    {
	    	var chart:ColumnChart = ColumnChart(parentApplication.columnChart);
	    	var oldPoint:Point = new Point(0,yNum);
	    	var newPoint:Array = chart.localToData(oldPoint);
 
			// Not sure why but the data value is always slightly larger than the
			// actual value, so cap at 100
			if(newPoint[1] > 100) return 100;
 
	    	return (newPoint[1]);
	    }
	}
}

package util
{
	import com.degrafa.paint.palette.PaletteUtils;
 
	public class ThermalColor
	{
		private var hi:int = 0;
		private var lo:int = 0;
		private var colorMap:Array;
 
		// Number of different colors in range
		private var size:int = 150;
 
		public function ThermalColor()
		{
			colorMap = getColorMap();
		}
 
		public function setHi(hi:int):void
		{
			this.hi = hi;
		}
 
		public function setLo(lo:int):void
		{
			this.lo = lo;
		}
 
		public function setSize(newSize:int):void
		{
			size = newSize;
			colorMap = getColorMap();
		}		
 
		// Generates a thermal color map with [size] many colors
        public function getColorMap():Array
        {
        	var colorMap:Array = new Array();
            var h:Number;
            for (var i:int=0; i