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loader.js
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loader.js
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(function ($, window, document) {
$.fn.lineLoader = function (options) {
var options = $.extend({}, $.fn.lineLoader.defaults, options);
this.finishLoading = function () {
options.slowing = false;
options.speed = 10;
}
return this.each(function () {
var element = $(this);
window.requestAnimFrame = (function () {
return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function (callback) {
window.setTimeout(callback, 1000 / 60);
};
})();
var canvas = document.createElement('canvas');
var ctx = canvas.getContext("2d");
var grd;
var path;
var progres = 0;
var currentPath = 0;
var t0 = 0;
var t1 = 0;
var height = 38;
var finish = false;
function percente(x1, y1, bx1, by1, bx2, by2, x2, y2) {
var u0 = 1 - t0;
u1 = 1 - t1;
qxa = x1 * u0 * u0 + bx1 * 2 * t0 * u0 + bx2 * t0 * t0;
qxb = x1 * u1 * u1 + bx1 * 2 * t1 * u1 + bx2 * t1 * t1;
qxc = bx1 * u0 * u0 + bx2 * 2 * t0 * u0 + x2 * t0 * t0;
qxd = bx1 * u1 * u1 + bx2 * 2 * t1 * u1 + x2 * t1 * t1;
qya = y1 * u0 * u0 + by1 * 2 * t0 * u0 + by2 * t0 * t0;
qyb = y1 * u1 * u1 + by1 * 2 * t1 * u1 + by2 * t1 * t1;
qyc = by1 * u0 * u0 + by2 * 2 * t0 * u0 + y2 * t0 * t0;
qyd = by1 * u1 * u1 + by2 * 2 * t1 * u1 + y2 * t1 * t1;
xa = qxa * u0 + qxc * t0;
xb = qxa * u1 + qxc * t1;
xc = qxb * u0 + qxd * t0;
xd = qxb * u1 + qxd * t1;
ya = qya * u0 + qyc * t0;
yb = qya * u1 + qyc * t1;
yc = qyb * u0 + qyd * t0;
yd = qyb * u1 + qyd * t1;
return [xa, ya, xb, yb, xc, yc, xd, yd];
}
function drawCurve(x1, y1, bx1, by1, bx2, by2, x2, y2) {
ctx.lineTo(x1, y1);
ctx.bezierCurveTo(bx1, by1, bx2, by2, x2, y2);
}
function drawPath() {
ctx.beginPath();
for (var i = 0; i < path.length; i++) {
if (i == currentPath) {
path[i][8] = path[i][8] >= 1 ? true : path[i][8];
currentPath = path[i][8] >= 1 ? currentPath += 1 : currentPath;
t1 = path[i][8] >= 1 ? 0 : t1;
t1 = path[i][8];
var v = percente(path[i][0], path[i][1], path[i][2], path[i][3], path[i][4], path[i][5], path[i][6], path[i][7]);
drawCurve(v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]);
path[i][8] += options.speed;
} else if (path[i][8]) {
drawCurve(path[i][0], path[i][1], path[i][2], path[i][3], path[i][4], path[i][5], path[i][6], path[i][7]);
}
};
ctx.lineWidth = options.lineSize;
ctx.lineJoin = options.lineJoin;
ctx.strokeStyle = options.color;
ctx.stroke();
if (options.slowing) {
options.speed = options.speed / options.slowingSpeed;
}
}
function getStartingX(string) {
var width = 0;
for (var i = 0; i < string.length; i++) {
width += $.fn.lineLoader.map[string[i]].width;
};
return canvas.width / 2 - width / 2;
}
function calculateNewX(array, x, y) {
var newArray = [];
for (var i = 0; i < array.length; i++) {
newArray.push(i % 2 ? array[i] + y : array[i] + x);
};
newArray.push(false);
return newArray;
}
function calculateNewPath(array, x, y) {
var newArray = [];
for (var i = 0; i < array.length; i++) {
newArray.push(calculateNewX(array[i], x, y));
};
return newArray;
}
function getFirstLine() {
return [0, canvas.height / 2 + height, 0, canvas.height / 2 + height, getStartingX(options.text), canvas.height / 2 + height, getStartingX(options.text), canvas.height / 2 + height, false];
}
function getLastLine(string) {
var width = 0;
for (var i = 0; i < string.length; i++) {
width += $.fn.lineLoader.map[string[i]].width;
};
var x = canvas.width / 2 + width;
return [x, canvas.height / 2 + height, x, canvas.height / 2 + height, canvas.width, canvas.height / 2 + height, canvas.width, canvas.height / 2 + height, false];
}
function makePath(string) {
var x = getStartingX(string);
var y = canvas.height / 2;
var path = [];
path.push(getFirstLine())
for (var i = 0; i < string.length; i++) {
var newPath = calculateNewPath($.fn.lineLoader.map[string[i]].path, x, y);
path = path.concat(newPath);
x += $.fn.lineLoader.map[string[i]].width;
};
path.push(getLastLine(string))
return path;
}
function drawBackground() {
ctx.fillStyle = options.gradientBackground ? grd : options.backgroundColor;
ctx.fillRect(0, 0, canvas.width, canvas.height);
}
function trimText(text) {
var newText = text.replace(/[^\w\s]/gi, '');
return newText.toLowerCase();
}
function resize() {
var box = canvas.getBoundingClientRect();
canvas.width = box.width;
canvas.height = box.height;
grd = ctx.createRadialGradient(canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.height);
grd.addColorStop(0, options.gradientColor1);
grd.addColorStop(1, options.gradientColor2);
}
function setFullPath(to) {
for (var i = 0; i < to; i++) {
path[i][path[i].length - 1] = true;
};
}
function isFinish() {
if (path[path.length - 1][path[path.length - 1].length - 1] >= 1 && !finish) {
finish = true;
if (options.fadeOut) {
$(canvas).fadeOut(options.fadeOutDuration, function () {
$(this).remove();
if (options.onFinish) {
options.onFinish.call();
}
if (options.hideScroll) {
element.css('overflow', 'auto');
}
});
} else {
$(canvas).remove();
if (options.onFinish) {
options.onFinish.call();
}
if (options.hideScroll) {
element.css('overflow', 'auto');
}
}
}
}
function reDraw() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawBackground();
drawPath();
isFinish();
requestAnimationFrame(reDraw);
}
function start() {
$(canvas).css(options.canvas.style).appendTo(element);
if (options.fadeIn) {
$(canvas).hide().fadeIn(options.fadeInDuration);
}
if (options.hideScroll) {
element.css('overflow', 'hidden');
}
options.text = trimText(options.text);
resize();
path = makePath(options.text);
reDraw();
}
start();
$(window).resize(function () {
resize();
path = makePath(options.text);
setFullPath(currentPath)
});
});
}
$.fn.lineLoader.defaults = {
text: 'loading',
color: '#2c3e50',
lineSize: 2.5,
lineJoin: 'round',
speed: 1,
slowing: false,
slowingSpeed: 1.04,
hideScroll: false,
fadeIn: false,
fadeInDuration: 30,
fadeOut: true,
fadeOutDuration: 50,
backgroundColor: 'transparent',
gradientBackground: false,
gradientColor1: '#95a5a6',
gradientColor2: '#7f8c8d',
canvas: {
id: 'line-loader',
style: {
position: 'fixed',
top: 0,
left: 0,
width: '100%',
height: '100%',
backgroundColor: 'transparent',
zIndex: 9999999
}
}
}
$.fn.lineLoader.map = {
d: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 17.329, 2.209, 17.329, 2.209],
[17.329, 2.209, 20.104, 2.188, 22.236, 2.375, 23.701, 2.722],
[23.701, 2.722, 25.75, 3.167, 27.5, 4.021, 28.951, 5.286],
[28.951, 5.286, 30.833, 6.854, 32.292, 8.896, 33.186, 11.401],
[33.186, 11.401, 34.104, 13.875, 34.583, 16.708, 34.59, 19.909],
[34.59, 19.909, 34.604, 22.604, 34.271, 25.021, 33.639, 27.136],
[33.639, 27.136, 32.979, 29.229, 32.188, 30.958, 31.197, 32.349],
[31.197, 32.349, 30.208, 33.708, 29.125, 34.792, 27.938, 35.596],
[27.938, 35.596, 26.354, 36.646, 24.958, 37.021, 23.664, 37.39],
[23.664, 37.39, 22.354, 37.729, 20.396, 38.137, 17.915, 38],
[17.915, 38, 17.915, 38, 39.59, 38, 39.59, 38]
],
width: 39.59
},
e: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 30.878, 2.209, 30.878, 2.209],
[30.878, 2.209, 30.878, 2.209, 30.878, 6.433, 30.878, 6.433],
[30.878, 6.433, 30.878, 6.433, 9.736, 6.433, 9.736, 6.433],
[9.736, 6.433, 9.736, 6.433, 9.736, 17.395, 9.736, 17.395],
[9.736, 17.395, 9.736, 17.395, 29.537, 17.395, 29.537, 17.395],
[29.537, 17.395, 29.537, 17.395, 29.537, 21.594, 29.537, 21.594],
[29.537, 21.594, 29.537, 21.594, 9.736, 21.594, 9.736, 21.594],
[9.736, 21.594, 9.736, 21.594, 9.736, 33.776, 9.736, 33.776],
[9.736, 33.776, 9.736, 33.776, 31.708, 33.776, 31.708, 33.776],
[31.708, 33.776, 31.708, 33.776, 31.708, 38, 31.708, 38],
[31.708, 38, 31.708, 38, 36.708, 38, 36.708, 38]
],
width: 36.708
},
f: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 29.146, 2.209, 29.146, 2.209],
[29.146, 2.209, 29.146, 2.209, 29.146, 6.433, 29.146, 6.433],
[29.146, 6.433, 29.146, 6.433, 9.736, 6.433, 9.736, 6.433],
[9.736, 6.433, 9.736, 6.433, 9.736, 17.517, 9.736, 17.517],
[9.736, 17.517, 9.736, 17.517, 26.533, 17.517, 26.533, 17.517],
[26.533, 17.517, 26.533, 17.517, 26.533, 21.74, 26.533, 21.74],
[26.533, 21.74, 26.533, 21.74, 9.736, 21.74, 9.736, 21.74],
[9.736, 21.74, 9.736, 21.74, 9.736, 38, 9.736, 38],
[9.736, 38, 9.736, 38, 34.146, 38, 34.146, 38]
],
width: 34.146
},
h: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 9.736, 2.209, 9.736, 2.209],
[9.736, 2.209, 9.736, 2.209, 9.736, 16.906, 9.736, 16.906],
[9.736, 16.906, 9.736, 16.906, 28.34, 16.906, 28.34, 16.906],
[28.34, 16.906, 28.34, 16.906, 28.34, 2.209, 28.34, 2.209],
[28.34, 2.209, 28.34, 2.209, 33.076, 2.209, 33.076, 2.209],
[33.076, 2.209, 33.076, 2.209, 33.076, 38, 33.076, 38],
[33.076, 38, 33.076, 38, 38.076, 38, 38.076, 38]
],
width: 38.076
},
i: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 9.736, 2.209, 9.736, 2.209],
[9.736, 2.209, 9.736, 2.209, 9.736, 38, 9.736, 38],
[9.736, 38, 9.736, 38, 14.736, 38, 14.736, 38]
],
width: 14.736
},
n: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 9.858, 2.209, 9.858, 2.209],
[9.858, 2.209, 9.858, 2.209, 28.657, 30.31, 28.657, 30.31],
[28.657, 30.31, 28.657, 30.31, 28.657, 2.209, 28.657, 2.209],
[28.657, 2.209, 28.657, 2.209, 33.199, 2.209, 33.199, 2.209],
[33.199, 2.209, 33.199, 2.209, 33.199, 38, 33.199, 38],
[33.199, 38, 33.199, 38, 38.199, 38, 38.199, 38]
],
width: 38.199
},
o: {
path: [
[0, 38, 0, 38, 19.114, 38, 19.114, 38],
[19.114, 38, 18.75, 37.973, 15.725, 37.8, 13.081, 36.169],
[13.081, 36.169, 10.424, 34.537, 8.417, 32.31, 7.051, 29.504],
[7.051, 29.504, 5.667, 26.667, 5.021, 23.688, 5, 20.568],
[5, 20.568, 5.021, 14.625, 6.563, 9.979, 9.785, 6.616],
[9.785, 6.616, 12.958, 3.229, 17.062, 1.562, 22.139, 1.575],
[22.139, 1.575, 25.438, 1.562, 28.417, 2.333, 31.074, 3.943],
[31.074, 3.943, 33.729, 5.479, 35.75, 7.687, 37.143, 10.547],
[37.143, 10.547, 38.583, 13.354, 39.229, 16.563, 39.229, 20.153],
[39.229, 20.153, 39.208, 23.771, 38.479, 26.979, 37.031, 29.895],
[37.031, 29.895, 35.563, 32.729, 33.521, 34.917, 30.806, 36.401],
[30.806, 36.401, 28.104, 37.875, 25.229, 37.979, 24.114, 38],
[24.114, 38, 24.114, 38, 44.229, 38, 44.229, 38]
],
width: 44.229
},
p: {
path: [
[0, 38, 0, 38, 5, 38, 5, 38],
[5, 38, 5, 38, 5, 2.209, 5, 2.209],
[5, 2.209, 5, 2.209, 18.501, 2.209, 18.501, 2.209],
[18.501, 2.209, 20.875, 2.156, 22.703, 2.313, 23.945, 2.551],
[23.945, 2.551, 25.703, 2.828, 27.172, 3.406, 28.364, 4.224],
[28.364, 4.224, 29.542, 5.021, 30.521, 6.146, 31.233, 7.678],
[31.233, 7.678, 31.958, 9.146, 32.306, 10.776, 32.319, 12.561],
[32.319, 12.561, 32.318, 15.576, 31.365, 18.165, 29.415, 20.288],
[29.415, 20.288, 27.482, 22.388, 23.976, 23.447, 18.916, 23.449],
[18.916, 23.449, 18.916, 23.449, 9.736, 23.449, 9.736, 23.449],
[9.736, 23.449, 9.736, 23.449, 9.736, 38, 9.736, 38],
[9.736, 38, 9.736, 38, 37.306, 38, 37.306, 38]
],
width: 35
},
' ': {
path: [
[0, 38, 0, 38, 30, 38, 30, 38]
],
width: 30
},
};
}(jQuery, window, document));
function showLoader() {
$('body').lineLoader({
text: 'FIND HOPE',
gradientBackground: true,
speed: 0.6,
color: '#ecf0f1',
gradientColor1: '#1abc9c',
gradientColor2: '#16a085'
});
}
var i = 0;
var timer = setInterval(() => {
showLoader();
console.log(i);
if (i > 1)
clearInterval(timer);
i++;
}, 3000);