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Fixed a bug where some touch events still performed the default actions. #4

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Fixed a bug where some touch events still performed the default actions. #4

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35 changes: 20 additions & 15 deletions samples/tracker.html
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Original file line number Diff line number Diff line change
Expand Up @@ -41,8 +41,8 @@
var i, len = touches.length;
for (i=0; i<len; i++) {
var touch = touches[i];
var px = touch.pageX;
var py = touch.pageY;
var px = touch.pageX;
var py = touch.pageY;

ctx.beginPath();
ctx.arc(px, py, 20, 0, 2*Math.PI, true);
Expand All @@ -53,7 +53,7 @@
ctx.lineWidth = 2.0;
ctx.strokeStyle = "rgba(0, 0, 200, 0.8)";
ctx.stroke();
console.log('drawn circle at ' + px +',' + py);
console.log('drawn circle at ' + px +',' + py);
}

updateStarted = false;
Expand All @@ -64,18 +64,23 @@
ctx = canvas.getContext('2d');
timer = setInterval(update, 15);

canvas.addEventListener('touchend', function() {
ctx.clearRect(0, 0, w, h);
});

canvas.addEventListener('touchmove', function(event) {
event.preventDefault();
touches = event.touches;
});

canvas.addEventListener('touchstart', function(event) {
console.log('start');
});
canvas.addEventListener('touchend', function() {
event.preventDefault();
ctx.clearRect(0, 0, w, h);
touches = [];
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@stretchtiberius stretchtiberius Oct 14, 2011

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Change this line to:
touches = event.touches;

});

canvas.addEventListener('touchmove', function(event) {
event.preventDefault();
touches = event.touches;
});

canvas.addEventListener('touchstart', function(event) {
event.preventDefault();
touches = event.touches;
console.log('start');

});
};

</script>
Expand Down