player/js/utils/expressions/MaskInterface.js

var MaskManagerInterface = (function(){

    function MaskInterface(mask, data){
        this._mask = mask;
        this._data = data;
    }
    Object.defineProperty(MaskInterface.prototype, 'maskPath', {
        get: function(){
            if(this._mask.prop.k){
                this._mask.prop.getValue();
            }
            return this._mask.prop;
        }
    });
    Object.defineProperty(MaskInterface.prototype, 'maskOpacity', {
        get: function(){
            if(this._mask.op.k){
                this._mask.op.getValue();
            }
            return this._mask.op.v * 100;
        }
    });

    var MaskManager = function(maskManager, elem){
        var _maskManager = maskManager;
        var _elem = elem;
        var _masksInterfaces = createSizedArray(maskManager.viewData.length);
        var i, len = maskManager.viewData.length;
        for(i = 0; i < len; i += 1) {
            _masksInterfaces[i] = new MaskInterface(maskManager.viewData[i], maskManager.masksProperties[i]);
        }

        var maskFunction = function(name){
            i = 0;
            while(i<len){
                if(maskManager.masksProperties[i].nm === name){
                    return _masksInterfaces[i];
                }
                i += 1;
            }
        };
        return maskFunction;
    };
    return MaskManager;
}());