Hi Jeff,
Here's a class that will generate an array for N elements that blends
between two RGB values.
Example:
import org.bespoke.color.ColorBlend;
var myBlender:ColorBlend=new ColorBlend(0xFF0000,0x00FF00);
//to get the RGBN value at 46% between the two...
var resultColor:Number= myBlender.getRGBAt(.46);
//get the blend in an array of 20 steps....
var myRGBArray:Array=myBlender.getArrayOfLength(20);
Hope this helps,
Cheers,
t
//----------------------------------------------------
import flash.display.BitmapData;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
class org.bespoke.color.ColorBlend extends Object{
public var start_rgb:Number=0x000000;
public var end_rgb:Number=0xFFFFFF;
private var colorTransform:ColorTransform;
private var matrix:Matrix;
public var bmp:BitmapData;
public var bmp_end:BitmapData;
function ColorBlend(c1:Number,c2:Number){
if(c1!=undefined){start_rgb=c1;}
if(c2!=undefined){end_rgb=c2;}
bmp=new BitmapData(1,1,true);
bmp_end=new BitmapData(1,1,true);
matrix=new Matrix();
colorTransform=new ColorTransform();
}
function getRGBAt(n:Number):Number{
//n should be a normalised float (0-1.0)
// although the range -1.0 <=> 1.0 is valid
bmp.setPixel(0,0,start_rgb);
bmp_end.setPixel(0,0,end_rgb);
colorTransform.alphaMultiplier=n;
bmp.draw(bmp_end,matrix,colorTransform);
return bmp.getPixel(0,0);
}
function getArrayOfLength(n:Number):Array
{
var result:Array=new Array();
for(var i:Number=0;i<n;i++){
result.push(getRGBAt(i/n));
}
return result;
}
}
//----------------------------------------------------
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