20072 	  if (event.pointers && event.pointers.length) {
20073 	    event = event.pointers[0];
23223 	    var pointersLen = input.pointers.length;
23256 	    var pointers = input.pointers;
23257 	    var pointersLength = pointers.length;
23275 	    var center = input.center = getCenter(pointers);
23290 	    input.scale = firstMultiple ? getScale(firstMultiple.pointers, pointers) : 1;
23291 	    input.rotation = firstMultiple ? getRotation(firstMultiple.pointers, pointers) : 0;
23293 	    input.maxPointers = !session.prevInput ? input.pointers.length : ((input.pointers.length >
23294 	        session.prevInput.maxPointers) ? input.pointers.length : session.prevInput.maxPointers);
23371 	    var pointers = [];
23373 	    while (i < input.pointers.length) {
23374 	        pointers[i] = {  class in simpleCloneInputData
23375 	            clientX: round(input.pointers[i].clientX),
23376 	            clientY: round(input.pointers[i].clientY)
23383 	        pointers: pointers,
23384 	        center: getCenter(pointers),
23395 	function getCenter(pointers) {  argument
23396 	    var pointersLength = pointers.length;
23401 	            x: round(pointers[0].clientX),
23402 	            y: round(pointers[0].clientY)
23408 	        x += pointers[i].clientX;
23409 	        y += pointers[i].clientY;
23554 	            pointers: [ev],
23638 	            pointers: store,
23695 	            pointers: touches[0],
23750 	            pointers: touches[0],
23999 	            var isTapPointer = input.pointers.length === 1;
24427 	        pointers: 1
24437 	        var optionPointers = this.options.pointers;
24438 	        return optionPointers === 0 || input.pointers.length === optionPointers;
24490 	        pointers: 1,
24567 	        pointers: 2
24608 	        pointers: 1,
24619 	        var validPointers = input.pointers.length === options.pointers;
24677 	        pointers: 2
24710 	        pointers: 1
24732 	            input.maxPointers == this.options.pointers &&
24776 	        pointers: 1,
24791 	        var validPointers = input.pointers.length === options.pointers;