Function inputHandler

docs/app/js/sanddance-app.js:92851–92868

* handle input events * @param {Manager} manager * @param {String} eventType * @param {Object} input

(manager, eventType, input)

 * @param {String} eventType
 * @param {Object} input
 */ function inputHandler(manager, eventType, input) {
        var pointersLen = input.pointers.length;
        var changedPointersLen = input.changedPointers.length;
        var isFirst = eventType & INPUT_START && pointersLen - changedPointersLen === 0;
        var isFinal = eventType & (INPUT_END | INPUT_CANCEL) && pointersLen - changedPointersLen === 0;
        input.isFirst = !!isFirst;
        input.isFinal = !!isFinal;
        if (isFirst) manager.session = {};
        // source event is the normalized value of the domEvents
        // like 'touchstart, mouseup, pointerdown'
        input.eventType = eventType;
        // compute scale, rotation etc
        computeInputData(manager, input);
        // emit secret event
        manager.emit("hammer.input", input);
        manager.recognize(input);
        manager.session.prevInput = input;
    }
    /**
 * extend the data with some usable properties like scale, rotate, velocity etc
 * @param {Object} manager