ZipCoin-RED/ZipCoinRedIonicClient/node_modules/ionic-angular/umd/gestures/recognizers.js

(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    var PanRecognizer = (function () {
        function PanRecognizer(direction, threshold, maxAngle) {
            this.direction = direction;
            this.dirty = false;
            this._angle = 0;
            this._isPan = 0;
            var radians = maxAngle * (Math.PI / 180);
            this.maxCosine = Math.cos(radians);
            this.threshold = threshold * threshold;
        }
        PanRecognizer.prototype.start = function (coord) {
            this.startCoord = coord;
            this._angle = 0;
            this._isPan = 0;
            this.dirty = true;
        };
        PanRecognizer.prototype.detect = function (coord) {
            if (!this.dirty) {
                return false;
            }
            var deltaX = (coord.x - this.startCoord.x);
            var deltaY = (coord.y - this.startCoord.y);
            var distance = deltaX * deltaX + deltaY * deltaY;
            if (distance >= this.threshold) {
                var angle = Math.atan2(deltaY, deltaX);
                var cosine = (this.direction === 'y')
                    ? Math.sin(angle)
                    : Math.cos(angle);
                this._angle = angle;
                if (cosine > this.maxCosine) {
                    this._isPan = 1;
                }
                else if (cosine < -this.maxCosine) {
                    this._isPan = -1;
                }
                else {
                    this._isPan = 0;
                }
                this.dirty = false;
                return true;
            }
            return false;
        };
        PanRecognizer.prototype.angle = function () {
            return this._angle;
        };
        PanRecognizer.prototype.pan = function () {
            return this._isPan;
        };
        return PanRecognizer;
    }());
    exports.PanRecognizer = PanRecognizer;
});
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