hyperbolic-clock/index.html at master · schmatz/hyperbolic-clock · GitHub

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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
<head>
    <link href="https://fonts.googleapis.com/css?family=Major+Mono+Display&display=swap" rel="stylesheet">
    <style>
        body {
            background: #000;
            color: #fff;
            text-align: center;
            font-family: 'Major Mono Display', monospace;
            text-transform: uppercase;
            padding-top: 2em;

            background: linear-gradient(to bottom,
                    #000,
                    #000 50%,
                    #222 50%,
                    #222);
            background-size: 100% 4px;
            animation: gradientMove 200ms ease infinite;
        }

        .emergency {
            color: red;
        }

        h1,
        small {
            text-shadow: 3px 2px 2px rgba(251, 12, 12, 1), 0px -1px 3px rgba(12, 79, 251, .5), -3px 0px 2px rgba(52, 251, 12, 1);
            animation: chromaticMove 4500ms ease infinite, pulse ease 200ms infinite;

        }

        h1 {
            font-size: 6em;
        }

        small {
            display: block;
            text-transform: initial;
            font-size: 24px;

        }

        @keyframes gradientMove {
            0% {
                background-size: 100% 4px
            }

            50% {
                background-size: 100% 2px
            }

            100% {
                background-size: 100% 4px
            }
        }

        @keyframes pulse {
            0% {
                opacity: .9;
                transform: skewX(.5deg);
            }

            25% {
                opacity: 1;
            }

            50% {
                opacity: .9;
            }

            75% {
                opacity: 1;
                transform: skewX(.5deg);
            }

            100% {
                opacity: .9;
            }
        }

        @keyframes chromaticMove {
            0% {
                text-shadow: 3px 2px 2px rgba(251, 12, 12, 1), 0px -1px 3px rgba(12, 79, 251, .5), 0px 0px -2px rgba(52, 251, 12, 1);
            }

            50% {
                text-shadow: 3px 2px 2px rgba(251, 12, 12, 1), 0px -1px 3px rgba(12, 79, 251, .5), -3px 2px 3px rgba(52, 251, 12, 1);
            }

            100% {
                text-shadow: 3px 2px 2px rgba(251, 12, 12, 1), 0px -1px 3px rgba(12, 79, 251, .5), 2px -1px 2px rgba(52, 251, 12, 1);
            }
        }
    </style>
</head>

<body>
    <small>
        Hyperbolic time activated
    </small>
    <h1 id="digits">
        30:00.000
    </h1>
    <script>

        function formatDigits(num, digits) {
            return String(num).padStart(digits, '0');
        }

        function countDown(seconds) {
            const start = (new Date()).getTime() / 1000;

            // Update at 60fps
            const timer = setInterval(displayAndUpdate, 16);

            function displayAndUpdate() {
                const now = (new Date()).getTime() / 1000;
                const diff = now - start; // This gets the time since start in seconds

                const hypSecs = (1800 * Math.pow((1 - 0.003), diff)) - 0.21717;

                if (hypSecs <= 0) {
                    cancelInterval(timer);
                    return;
                }

                const mins = formatDigits(Math.floor(hypSecs / 60), 2);
                const secs = formatDigits(Math.floor(hypSecs) % 60, 2);
                const ms = formatDigits(Math.floor((hypSecs * 1000) % 1000), 3);
                document.getElementById("digits").innerHTML = `${mins}:${secs}.${ms}`;
                if (hypSecs <= 60) {
                    if (Math.floor(diff) % 2 == 0) {
                        document.getElementById("digits").classList.add('emergency');
                    } else {
                        document.getElementById("digits").classList.remove('emergency');
                    }
                }

            }
        }

        (function () {
            countDown(1800);
        }());
    </script>

</body>