The following example contains custom latitude and longitude functions.
function toRad(num) {return num * Math.PI / 180;} function toDeg(num) {return num * 180 / Math.PI;} function calcDistance(lat1, lon1, lat2, lon2) { var R = 6371; // Radius of the earth in km var dLat = (lat2 - lat1) * Math.PI / 180; // deg2rad below var dLon = (lon2 - lon1) * Math.PI / 180; var a = 0.5 - Math.cos(dLat)/2 + Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) * (1 - Math.cos(dLon))/2; return R * 2 * Math.asin(Math.sqrt(a)); } function calcBearing (lat1,lng1,lat2,lng2) { var dLon = (lng2-lng1); var y = Math.sin(dLon) * Math.cos(lat2); var x = Math.cos(lat1)*Math.sin(lat2) - Math.sin(lat1)*Math.cos(lat2)*Math.cos(dLon); var brng = toDeg(Math.atan2(y, x)); return 360 - ((brng + 360) % 360); } function calcSpeed(lat1,lon1,lat2,lon2,time1,time2) { var d = calcDistance(lat1,lon1,lat2,lon2); var time = dateParse(time2)-dateParse(time1); return d/(time/1000/60/60); }
The following example contains custom easing functions.
easing = { // t: current time, b: begInnIng value, c: change In value, d: duration swing: function (t, b, c, d) { return easing[easeOutQuad](t, b, c, d); }, easeInQuad: function (t, b, c, d) { return c*(t/=d)*t + b; }, easeOutQuad: function (t, b, c, d) { return -c *(t/=d)*(t-2) + b; }, easeInOutQuad: function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t + b; return -c/2 * ((--t)*(t-2) - 1) + b; }, easeInCubic: function (t, b, c, d) { return c*(t/=d)*t*t + b; }, easeOutCubic: function (t, b, c, d) { return c*((t=t/d-1)*t*t + 1) + b; }, easeInOutCubic: function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t + b; return c/2*((t-=2)*t*t + 2) + b; }, easeInQuart: function (t, b, c, d) { return c*(t/=d)*t*t*t + b; }, easeOutQuart: function (t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b; }, easeInOutQuart: function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t*t + b; return -c/2 * ((t-=2)*t*t*t - 2) + b; }, easeInQuint: function (t, b, c, d) { return c*(t/=d)*t*t*t*t + b; }, easeOutQuint: function (t, b, c, d) { return c*((t=t/d-1)*t*t*t*t + 1) + b; }, easeInOutQuint: function (t, b, c, d) { if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b; return c/2*((t-=2)*t*t*t*t + 2) + b; }, easeInSine: function (t, b, c, d) { return -c * Math.cos(t/d * (Math.PI/2)) + c + b; }, easeOutSine: function (t, b, c, d) { return c * Math.sin(t/d * (Math.PI/2)) + b; }, easeInOutSine: function (t, b, c, d) { return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b; }, easeInExpo: function (t, b, c, d) { return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b; }, easeOutExpo: function (t, b, c, d) { return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b; }, easeInOutExpo: function (t, b, c, d) { if (t==0) return b; if (t==d) return b+c; if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b; return c/2 * (-Math.pow(2, -10 * --t) + 2) + b; }, easeInCirc: function (t, b, c, d) { return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b; }, easeOutCirc: function (t, b, c, d) { return c * Math.sqrt(1 - (t=t/d-1)*t) + b; }, easeInOutCirc: function (t, b, c, d) { if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b; return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b; }, easeInElastic: function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3; if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b; }, easeOutElastic: function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3; if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b; }, easeInOutElastic: function (t, b, c, d) { var s=1.70158;var p=0;var a=c; if (t==0) return b; if ((t/=d/2)==2) return b+c; if (!p) p=d*(.3*1.5); if (a < Math.abs(c)) { a=c; var s=p/4; } else var s = p/(2*Math.PI) * Math.asin (c/a); if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b; return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b; }, easeInBack: function (t, b, c, d, s) { if (s == undefined) s = 1.70158; return c*(t/=d)*t*((s+1)*t - s) + b; }, easeOutBack: function (t, b, c, d, s) { if (s == undefined) s = 1.70158; return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b; }, easeInOutBack: function (t, b, c, d, s) { if (s == undefined) s = 1.70158; if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b; return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b; }, easeInBounce: function (t, b, c, d) { return c - easing.easeOutBounce (d-t, 0, c, d) + b; }, easeOutBounce: function (t, b, c, d) { if ((t/=d) < (1/2.75)) { return c*(7.5625*t*t) + b; } else if (t < (2/2.75)) { return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b; } else if (t < (2.5/2.75)) { return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b; } else { return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b; } }, easeInOutBounce: function (t, b, c, d) { if (t < d/2) return easing.easeInBounce (t*2, 0, c, d) * .5 + b; return easing.easeOutBounce (t*2-d, 0, c, d) * .5 + c*.5 + b; } }; return easing[@.a](0+@.b,0,1,1,0+@.e)*@.c+@.d;