You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.8 KiB
JavaScript
90 lines
2.8 KiB
JavaScript
;(function(){
|
|
var msg = "IRIS version 0.5";
|
|
var size = 14;
|
|
var circleY = 0.75; var circleX = 2;
|
|
var letter_spacing = 5;
|
|
var diameter = 10;
|
|
var rotation = 0.4;
|
|
var speed = 0.3;
|
|
|
|
if (!window.addEventListener && !window.attachEvent || !document.createElement) return;
|
|
|
|
msg = msg.split('');
|
|
var n = msg.length - 1, a = Math.round(size * diameter * 0.208333), currStep = 20,
|
|
ymouse = a * circleY + 20, xmouse = a * circleX + 20, y = [], x = [], Y = [], X = [],
|
|
|
|
o = document.createElement('div'), oi = document.createElement('div'),
|
|
b = document.compatMode && document.compatMode != "BackCompat"? document.documentElement : document.body,
|
|
|
|
mouse = function(e){
|
|
e = e || window.event;
|
|
ymouse = !isNaN(e.pageY)? e.pageY : e.clientY; // y-position
|
|
xmouse = !isNaN(e.pageX)? e.pageX : e.clientX; // x-position
|
|
},
|
|
|
|
makecircle = function(){ // rotation/positioning
|
|
if(init.nopy){
|
|
o.style.top = (b || document.body).scrollTop + 'px';
|
|
o.style.left = (b || document.body).scrollLeft + 'px';
|
|
};
|
|
|
|
currStep -= rotation;
|
|
|
|
for (var d, i = n; i > -1; --i){ // makes the circle
|
|
|
|
d = document.getElementById('iemsg' + i).style;
|
|
d.top = Math.round(y[i] + a * Math.sin((currStep + i) / letter_spacing) * circleY - 15) + 'px';
|
|
d.left = Math.round(x[i] + a * Math.cos((currStep + i) / letter_spacing) * circleX) + 'px';
|
|
};
|
|
},
|
|
|
|
drag = function(){ // makes the resistance
|
|
y[0] = Y[0] += (ymouse - Y[0]) * speed;
|
|
x[0] = X[0] += (xmouse - 20 - X[0]) * speed;
|
|
for (var i = n; i > 0; --i){
|
|
y[i] = Y[i] += (y[i-1] - Y[i]) * speed;
|
|
x[i] = X[i] += (x[i-1] - X[i]) * speed;
|
|
};
|
|
|
|
makecircle();
|
|
},
|
|
|
|
init = function(){ // appends message divs, & sets initial values for positioning arrays
|
|
|
|
if(!isNaN(window.pageYOffset)){
|
|
ymouse += window.pageYOffset;
|
|
xmouse += window.pageXOffset;
|
|
} else init.nopy = true;
|
|
for (var d, i = n; i > -1; --i){
|
|
|
|
d = document.createElement('div'); d.id = 'iemsg' + i;
|
|
d.style.height = d.style.width = a + 'px';
|
|
d.appendChild(document.createTextNode(msg[i]));
|
|
oi.appendChild(d); y[i] = x[i] = Y[i] = X[i] = 0;
|
|
};
|
|
|
|
o.appendChild(oi); document.body.appendChild(o);
|
|
setInterval(drag, 25);
|
|
},
|
|
|
|
ascroll = function(){
|
|
ymouse += window.pageYOffset;
|
|
xmouse += window.pageXOffset;
|
|
window.removeEventListener('scroll', ascroll, false);
|
|
};
|
|
|
|
o.id = 'outerCircleText'; o.style.fontSize = size + 'px';
|
|
|
|
if (window.addEventListener){
|
|
window.addEventListener('load', init, false);
|
|
document.addEventListener('mouseover', mouse, false);
|
|
document.addEventListener('mousemove', mouse, false);
|
|
if (/Apple/.test(navigator.vendor))
|
|
window.addEventListener('scroll', ascroll, false);
|
|
}
|
|
else if (window.attachEvent){
|
|
window.attachEvent('onload', init);
|
|
document.attachEvent('onmousemove', mouse);
|
|
};
|
|
})();
|