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// xAnimation r5, Copyright 2006-2010 Michael Foster (Cross-Browser.com) // Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL function xAnimation(r) { this.res = r || 10; } // Initialize an array of n axis objects. xAnimation.prototype.axes = function(n) { var j, i = this; if (!i.a || i.a.length != n) { i.a = []; for (j = 0; j < n; ++j) { i.a[j] = { i:0, t:0, d:0, v:0 }; // initial value, target value, displacement, instantaneous value } } }; // The caller must set the axes' initial and target values before calling init. xAnimation.prototype.init = function(e,t,or,ot,oe,at,b) { var ai, i = this; i.e = xGetElementById(e); i.t = t; i.or = or; // onRun i.ot = ot; // onTarget i.oe = oe; // onEnd i.at = at || 0; // acceleration type i.v = xAnimation.vf[i.at]; i.qc = 1 + (b || 0); // quarter-cycles i.fq = 1 / i.t; // frequency if (i.at > 0 && i.at < 4) { i.fq *= i.qc * Math.PI; if (i.at == 1 || i.at == 2) { i.fq /= 2; } } // displacements for (ai = 0; ai < i.a.length; ++ai) { i.a[ai].d = i.a[ai].t - i.a[ai].i; } }; xAnimation.prototype.run = function(r) { var ai, qcm2, rep, i = this; if (!r) { i.t1 = new Date().getTime(); } if (!i.tmr) i.tmr = setInterval( function() { i.et = new Date().getTime() - i.t1; // elapsed time if (i.et < i.t) { // instantaneous values i.f = i.v(i.et * i.fq); for (ai = 0; ai < i.a.length; ++ai) { i.a[ai].v = i.a[ai].d * i.f + i.a[ai].i; } i.or(i); // call onRun } else { // target time reached clearInterval(i.tmr); i.tmr = null; qcm2 = i.qc % 2; for (ai = 0; ai < i.a.length; ++ai) { if (qcm2) { i.a[ai].v = i.a[ai].t; } else { i.a[ai].v = i.a[ai].i; } } i.ot(i); // call onTarget // handle onEnd rep = false; if (typeof i.oe == 'function') { rep = i.oe(i); } else if (typeof i.oe == 'string') { rep = eval(i.oe); } if (rep) { i.resume(1); } } }, i.res ); }; xAnimation.prototype.pause = function() { clearInterval(this.tmr); this.tmr = null; }; xAnimation.prototype.resume = function(fs) { if (typeof this.tmr != 'undefined' && !this.tmr) { this.t1 = new Date().getTime(); if (!fs) {this.t1 -= this.et;} this.run(!fs); } }; // Static array of velocity functions xAnimation.vf = [ function(r){return r;}, function(r){return Math.abs(Math.sin(r));}, function(r){return 1-Math.abs(Math.cos(r));}, function(r){return (1-Math.cos(r))/2;}, function(r) {return (1.0 - Math.exp(-r * 6));} ]; // end xAnimation // xAnimation.line r3, Copyright 2006-2010 Michael Foster (Cross-Browser.com) // Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL xAnimation.prototype.line = function(e,x,y,t,a,b,oe) { var i = this; i.axes(2); i.a[0].i = xLeft(e); i.a[1].i = xTop(e); // initial position i.a[0].t = Math.round(x); i.a[1].t = Math.round(y); // target position i.init(e,t,h,h,oe,a,b); i.run(); function h(i) { // onRun and onTarget i.e.style.left = Math.round(i.a[0].v) + 'px'; i.e.style.top = Math.round(i.a[1].v) + 'px'; } }; // xAnimation.size r3, Copyright 2006-2010 Michael Foster (Cross-Browser.com) // Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL xAnimation.prototype.size = function(e,w,h,t,a,b,oe) { var i = this; i.axes(2); i.a[0].i = xWidth(e); i.a[1].i = xHeight(e); // initial size i.a[0].t = Math.round(w); i.a[1].t = Math.round(h); // target size i.init(e,t,o,o,oe,a,b); i.run(); function o(i) { xWidth(i.e, Math.round(i.a[0].v)); xHeight(i.e, Math.round(i.a[1].v)); } // onRun and onTarget }; // xAnimation.sizeLine r1, Copyright 2009-2010 Michael Foster (Cross-Browser.com) // Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL /** @param e ID string or object reference of the element to be animated. @param s A "sequence" array. @param a Acceleration type. @param b Number of bounces. @param oe onEnd handler. Return true to repeat sequence. */ xAnimation.prototype.sizeLine = function(e,s,a,b,oe) { var i = this, si = 0; i.axes(4); // axes: x, y, w and h prep(); i.run(); function h(i) { // onRun and onTarget // set position i.e.style.left = Math.round(i.a[0].v) + 'px'; i.e.style.top = Math.round(i.a[1].v) + 'px'; // set size xWidth(i.e, Math.round(i.a[2].v)); xHeight(i.e, Math.round(i.a[3].v)); } // onEnd handler function end(i) { if (++si < s.length) { prep(); return true; // start next animation in sequence } else { if (oe && oe(i)) { si = 0; prep(); return true; // restart sequence } return false; // stop } } // prepare for the next animation in the sequence function prep() { // initial position i.a[0].i = xLeft(e); i.a[1].i = xTop(e); // target position i.a[0].t = Math.round(s[si][0]); i.a[1].t = Math.round(s[si][1]); // initial size i.a[2].i = xWidth(e); i.a[3].i = xHeight(e); // target size i.a[2].t = Math.round(s[si][2]); i.a[3].t = Math.round(s[si][3]); i.init(e,s[si][4],h,h,end,a,b); } }; // xAnimation.opacity r3, Copyright 2006-2010 Michael Foster (Cross-Browser.com) // Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL xAnimation.prototype.opacity = function(e,o,t,a,b,oe) { var i = this; i.axes(1); i.a[0].i = xOpacity(e); i.a[0].t = o; // initial and target opacity i.init(e,t,h,h,oe,a,b); i.run(); function h(i) {xOpacity(i.e, i.a[0].v);} // onRun and onTarget };