98 lines
2.6 KiB
JavaScript
98 lines
2.6 KiB
JavaScript
var t = 0;
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function login(form) {
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u = form.username.value;
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p = form.password.value;
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uEmpty = u === '', pEmpty = p === '';
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if(uEmpty && pEmpty) {
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alertBox('Please enter a username and password!', 'error');
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return;
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} else if (uEmpty && !pEmpty) {
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alertBox('Please enter a username!', 'error');
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return;
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} else if (!uEmpty && pEmpty) {
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alertBox('Please enter a password!', 'error');
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return;
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}
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data = {username: u, password: p}
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$.post('./login', data).done(function(data) {
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if(data) {
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location.reload(true);
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} else {
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alertBox('Wrong username or password!');
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}
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});
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}
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function drawCanvas() {
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var el = get('canvas')
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var c = el.getContext('2d')
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var block = 10, space = 2, size = block+space;
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var period = 100, freq = 2*Math.PI/period, step = 1.4, base = 0.05;
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var col = randColor();
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var dir = randDir();
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function animCanvas(t, col) {
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// To update when window changes.
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var w = window.innerWidth, h = window.innerHeight;
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var x = w/size, y = h/size;
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var offX = -(w-Math.floor(x)*size)/2, offY = -(h-Math.floor(y)*size)/2;
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el.width = w, el.height = h;
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c.fillStyle = '#0e0e0e';
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c.fillRect(0, 0, w, h);
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for(var i = 0; i < x+1; i++) {
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for(var j = 0; j < y+1; j++) {
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var intes = Math.round(step*Math.cos((i+j*dir[0]+t*dir[1])*freq)+step)*0.2/step+base
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c.fillStyle = `rgba(${col[0]},${col[1]},${col[2]},${intes})`;
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c.fillRect(i*size+offX, j*size+offY, block, block);
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}
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}
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return 1
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}
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function randColor() {
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var arr = [
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128*Math.round(2*Math.random())-1,
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128*Math.round(2*Math.random())-1,
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128*Math.round(2*Math.random())-1
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];
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while(arr[0]+arr[1]+arr[2] < 382) arr = randColor();
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return arr;
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}
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function randDir() {
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return [
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(Math.round(Math.random())) ? -1 : 1,
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(Math.round(Math.random())) ? -1 : 1
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];
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}
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setInterval(function() {
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t += animCanvas(t, col);
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if(t == period) {
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t = 0;
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newCol = randColor();
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while(newCol === col) newCol == randColor();
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col = newCol;
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}
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}, 80);
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}
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drawCanvas();
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inputs = get('input'), button = get('button')
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inputs[0].addEventListener('keyup', function(e) {
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if(e.keyCode === 13) button.click();
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});
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inputs[1].addEventListener('keyup', function(e) {
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if(e.keyCode === 13) button.click();
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}); |