alphas (GradientGlowFilter.alphas property)

An array of alpha transparency values for the corresponding colors in the colors array. Valid values for each element in the array are 0 to 1. For example, .25 sets the alpha transparency value to 25%.

The alphas property cannot be changed by directly modifying its values. Instead, you must get a reference to alphas, make the change to the reference, and then set alphas to the reference.

The colors, alphas, and ratios properties are all related. The first element in the colors array corresponds to the first element in the alphas array and in the ratios array, and so on.

Example

The following example changes the alphas property on an existing movie clip when a user clicks it.

import flash.filters.GradientGlowFilter;
var mc:MovieClip = createGradientGlowRectangle("GlowAlphas");
mc.onRelease = function() {
    var filter:GradientGlowFilter = this.filters[0];
    var alphas:Array = filter.alphas;
    alphas.pop();
    alphas.pop();
    alphas.push(.3);
    alphas.push(1);
    filter.alphas = alphas;
    this.filters = new Array(filter);
}

function createGradientGlowRectangle(name:String):MovieClip {
    var art:MovieClip = this.createEmptyMovieClip(name, this.getNextHighestDepth());
    var w:Number = 100;
    var h:Number = 100;
    art.beginFill(0x003366);
    art.lineTo(w, 0);
    art.lineTo(w, h);
    art.lineTo(0, h);
    art.lineTo(0, 0);
    art._x = 20;
    art._y = 20;

    var colors:Array = [0xFFFFFF, 0xFF0000, 0xFFFF00, 0x00CCFF];
    var alphas:Array = [0, 1, 1, 1];
    var ratios:Array = [0, 63, 126, 255];
    var filter:GradientGlowFilter = new GradientGlowFilter(0, 45, colors, alphas, ratios, 55, 55, 2.5, 2, "outer", false);
    var filterArray:Array = new Array();
    filterArray.push(filter);
    art.filters = filterArray;
    return art;
}

alphas (GradientGlowFilter.alphas property)

Example

See also