FilterUtil

package org.mobit.util {
    import flash.display.DisplayObject;
    import flash.filters.*;
    import flash.utils.Dictionary;

    public class FilterUtil extends Object {
        private static var _filters : Dictionary = new Dictionary();

        public static function getBlackWhiteMatrixData() : ColorMatrixFilter {
            if (_filters["getBlackWhiteMatrixData"] == null)
                _filters["getBlackWhiteMatrixData"] = new ColorMatrixFilter([0.3086, 0.6094, 0.082, 0, 0, 0.3086, 0.6094, 0.082, 0, 0, 0.3086, 0.6094, 0.082, 0, 0, 0, 0, 0, 1, 0]);
            return _filters["getBlackWhiteMatrixData"] as ColorMatrixFilter;
        }

        public static function getColor(r : Number, g : Number, b : Number, a : Number = 1) : Array {
            var matrix : Array = new Array();
            matrix = matrix.concat([r, 0, 0, 0, 0]);
            // red
            matrix = matrix.concat([0, g, 0, 0, 0]);
            // green
            matrix = matrix.concat([0, 0, b, 0, 0]);
            // blue
            matrix = matrix.concat([0, 0, 0, a, 0]);
            // alpha
            return matrix;
        }

        public static function getRed() : Array {
            var matrix : Array = new Array();
            matrix = matrix.concat([1, 0, 0, 0, 0]);
            // red
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // green
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // blue
            matrix = matrix.concat([0, 0, 0, 1, 0]);
            // alpha
            return matrix;
        }

        public static function getGreen() : Array {
            var matrix : Array = new Array();
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // red
            matrix = matrix.concat([0, 1, 0, 0, 0]);
            // green
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // blue
            matrix = matrix.concat([0, 0, 0, 1, 0]);
            // alpha
            return matrix;
        }

        public static function getBlue() : Array {
            var matrix : Array = new Array();
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // red
            matrix = matrix.concat([0, 0, 0, 0, 0]);
            // green
            matrix = matrix.concat([0, 0, 1, 0, 0]);
            // blue
            matrix = matrix.concat([0, 0, 0, 1, 0]);
            // alpha
            return matrix;
        }

        public static function applyFilter(child : DisplayObject, matrix : Array) : void {
            var filter : ColorMatrixFilter = new ColorMatrixFilter(matrix);
            var filters : Array = new Array();
            filters.push(filter);
            child.filters = filters;
        }

        public static function getGoldGlowFilter() : GlowFilter {
            if (_filters["goldGlowFilter"] == null) {
                _filters["goldGlowFilter"] = new GlowFilter(0xffde00);
            }
            return _filters["goldGlowFilter"];
        }

        public static function getGreenGlowFilter() : GlowFilter {
            if (_filters["glowGreenFilter"] == null) {
                _filters["glowGreenFilter"] = new GlowFilter(0x00ff00);
            }
            return _filters["glowGreenFilter"];
        }

        public static function getBlackStrokeFilter() : GlowFilter {
            if (_filters["blackStrokeFilter"] == null) {
                _filters["blackStrokeFilter"] = new GlowFilter(0x000000, 1, 3, 3, 10, 1);
            }
            return _filters["blackStrokeFilter"];
        }

        public static function getColorFilter(color : Number) : GlowFilter {
            if (_filters[color] == null) {
                _filters[color] = new GlowFilter(color, 1, 4, 4, 14, 1);
            }
            return _filters[color];
        }
        
        public static function getCampItemFilter(color:Number=0x06f2db):GlowFilter{
            if (_filters[color] == null) {
                _filters[color] = new GlowFilter(color, 1, 8, 8, 14, 1);
            }
            return _filters[color];
        }

        public static function getWhiteStrokeFilter() : GlowFilter {
            if (_filters["whiteStrokeFilter"] == null) {
                var color : Number = 0xFFFFFF;
                var alpha : Number = 1;
                var blurX : Number = 3;
                var blurY : Number = 3;
                var strength : Number = 2;
                var inner : Boolean = false;
                var knockout : Boolean = false;
                var quality : Number = BitmapFilterQuality.MEDIUM;

                _filters["whiteStrokeFilter"] = new GlowFilter(color, alpha, blurX, blurY, strength, quality, inner, knockout);
            }
            return _filters["whiteStrokeFilter"];
        }
    }
}