MACROMEDIA FLASH 8-LEARNING ACTIONSCRIPT 2.0 IN FLASH Manual page 547

Using complex gradient fills
The Flash Drawing API supports gradient fills as well as solid fills. The following procedure
creates a new movie clip on the Stage, use the Drawing API to create a square, and then fills
the square with a radial red and blue gradient.
To create a complex gradient:
1.
Create a new Flash document and save it as radialgradient.fla.
2.
Add the following ActionScript to Frame 1 of the Timeline:
this.createEmptyMovieClip("gradient_mc", 10);
var fillType:String = "radial";
var colors:Array = [0xFF0000, 0x0000FF];
var alphas:Array = [100, 100];
var ratios:Array = [0, 0xFF];
var matrix:Object = {a:200, b:0, c:0, d:0, e:200, f:0, g:200, h:200,
i:1};
var spreadMethod:String = "reflect";
var interpolationMethod:String = "linearRGB";
var focalPointRatio:Number = 0.9;
with (gradient_mc) {
beginGradientFill(fillType, colors, alphas, ratios, matrix,
spreadMethod, interpolationMethod, focalPointRatio);
moveTo(100, 100);
lineTo(100, 300);
lineTo(300, 300);
lineTo(300, 100);
lineTo(100, 100);
endFill();
}
The preceding ActionScript code uses the Drawing API to create a square on the Stage
and calls the beginGradientFill() method to fill the square with a red and blue
circular gradient.
3.
Save the Flash document and select Control > Test Movie to view the Flash file.
Drawing with ActionScript 547