1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
let isFirstTime = true;
var mainInterval;
function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
function setRandomBlob() {
blob.style.width = getRandomInt(50, 100) + '%';
blob.style.height = getRandomInt(50, 100) + '%';
blob.style.rotate = getRandomInt(0, 360) + 'deg';
}
function randomPosition(element) {
var x = getRandomInt(0, window.innerWidth);
var y = getRandomInt(0, window.innerHeight);
element.style.position = 'absolute';
element.style.left = x + 'px';
element.style.top = y + 'px';
}
function resetBlob() {
setRandomBlob();
blob.style.background = generateGradient();
randomPosition(blob);
// fadeIn
blob.animate([
// keyframes
{ opacity: 0 },
{ opacity: .40 }
], {
// timing options
duration: 3000,
iterations: 1,
fill: 'forwards'
});
}
function main() {
if (!isFirstTime) {
// fadeOut
let fadeOutAnimation = blob.animate([
// keyframes
{ opacity: .40 },
{ opacity: 0, scale: .8}
], {
// timing options
duration: 3000,
iterations: 1,
fill: 'forwards'
});
// resetBlob
fadeOutAnimation.onfinish = () => {
resetBlob()
};
} else {
// resetBlob
resetBlob()
isFirstTime = false;
}
mainInterval = setTimeout(main, getRandomInt(7500, 30000));
}
blob.addEventListener('click', function() {
clearTimeout(mainInterval)
main(getRandomInt(7500, 30000));
});
main();
|
