//rotation
var angle = 0;
touch.on('#target', 'touchstart', function(ev){
    ev.startRotate();
    ev.preventDefault();
});

touch.on('#target', 'rotate', function(ev){
    var totalAngle = angle + ev.rotation;
    if(ev.fingerStatus === 'end'){
        angle = angle + ev.rotation;
    }
    this.style.webkitTransform = 'rotate(' + totalAngle + 'deg)';
});

var target = document.getElementById("target");
target.style.webkitTransition = 'all ease 0.05s';

touch.on('#target', 'touchstart', function(ev){
	ev.preventDefault();
});

var initialScale = 1;
var currentScale;

touch.on('#target', 'pinchend', function(ev){
	currentScale = ev.scale - 1;
	currentScale = initialScale + currentScale;
	currentScale = currentScale > 2 ? 2 : currentScale;
	currentScale = currentScale < 1 ? 1 : currentScale;
	this.style.webkitTransform = 'scale(' + currentScale + ')';
	log("当前缩放比例为:" + currentScale + ".");
});

touch.on('#target', 'pinchend', function(ev){
	initialScale = currentScale;
});

touch.on('#target', 'hold tap doubletap', function(ev){
    //console.log(ev.type);
});

touch.on('#target', 'touchstart', function(ev){
	ev.preventDefault();
});

var target = document.getElementById("target");
target.style.webkitTransition = 'all ease 0.2s';

touch.on(target, 'swiperight', function(ev){
	this.style.webkitTransform = "translate3d(" + rt + "px,0,0)";
	log("向右滑动.");
});

touch.on(target, 'swipeleft', function(ev){
	log("向左滑动.");
	this.style.webkitTransform = "translate3d(-" + this.offsetLeft + "px,0,0)";
});

touch.on('#target', 'touchstart', function(ev){
	ev.preventDefault();
});

var target = document.getElementById("target");
var dx, dy;

touch.on('#target', 'drag', function(ev){
	dx = dx || 0;
	dy = dy || 0;
	log("当前x值为:" + dx + ", 当前y值为:" + dy +".");
	var offx = dx + ev.x + "px";
	var offy = dy + ev.y + "px";
	this.style.webkitTransform = "translate3d(" + offx + "," + offy + ",0)";
});

touch.on('#target', 'dragend', function(ev){
	dx += ev.x;
	dy += ev.y;
});

touch.on('#target', 'touchstart touchmove touchend', function(ev){
    console.log(ev.type);
});