鼠标移动和触摸移动

Question

I really like this visual effect . I want to make this available in iphone or ipad with touchmove. Can anyone help me with this?

This is the JS:

$(document).bind('mousemove',function(e){
    var docW = $(window).width();
    var docH = $(window).height();

    var diffX = (docW/2) - e.clientX;
    var diffY = (docH/2)-100 - e.clientY;

    var dist = distance(docW/2,docH/2, e.clientX, e.clientY);
    var distM = distance(docW/2,(docH/2)+60, e.clientX, e.clientY);

        // eye                          
        var eye_background = Math.floor( diffX /-30 ) +'px '+ Math.floor( diffY /-30 ) +'px';       
        var eye_translate = Math.floor(diffX/-50 )+'px, '+ Math.floor(diffY/-100 )+'px';    
        $(".eye").css({"background-position":eye_background, "-webkit-transform":'translate3d('+eye_translate+',0)',"-moz-transform":'translate('+eye_translate+')',"-o-transform":'translate('+eye_translate+')',"-ms-transform":'translate('+eye_translate+')' });



});

Basically, my question is how can I make this work on apple?

Answer 1

You should start a listener on mousedown and stop it on mouseup. Meanwhile a listener will loop (for example requestanimationfame or setInterval() ) your //eye method.

This is a common process in webGL for example. example

http://api.jquery.com/mousedown/

http://api.jquery.com/mouseup/