Created
August 24, 2015 18:03
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A Million Times (html5 clone)
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<html> | |
<head> | |
<style> | |
* { margin:0; padding:0; } /* to remove the top and left whitespace */ | |
html, body { width:100%; height:100%; } /* just to be sure these are full screen*/ | |
canvas { display:block; } /* To remove the scrollbars */ | |
</style> | |
</head> | |
<body> | |
<canvas id="myCanvas"></canvas> | |
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-alpha1/jquery.min.js"></script> | |
<script type="text/javascript"> | |
(function() { | |
/** | |
* THIS IS WHAT YOU EDIT | |
* @return {[type]} [description] | |
*/ | |
function animate() { | |
var i=0; | |
var j=0; | |
for (;i<colCount;i++) { | |
for (j=0;j<rowCount;j++) { | |
var m = clocks[i][j].minute; | |
clocks[i][j].minute = (m + 1) % 60; | |
var h = clocks[i][j].hour; | |
clocks[i][j].hour = (h + 12/12/60) % 12; | |
} | |
} | |
context.clearRect(0, 0, canvas.width, canvas.height); | |
drawStuff(); | |
} | |
/* | |
* No need to touch this stuff. | |
*/ | |
var canvas = document.getElementById('myCanvas'), | |
context = canvas.getContext('2d'), | |
rowCount = 8, | |
colCount = 15, | |
clocks = []; | |
// resize the canvas to fill browser window dynamically | |
window.addEventListener('resize', resizeCanvas, false); | |
function resizeCanvas() { | |
canvas.width = window.innerWidth; | |
canvas.height = window.innerHeight; | |
initCircles(); | |
drawStuff(); | |
} | |
resizeCanvas(); | |
function initCircles() { | |
var colW = canvas.width / (colCount + 2); | |
var rowH = canvas.height / (rowCount + 2); | |
var radius = Math.min(colW, rowH) / 2; | |
var colPadding = radius * 2 / colCount; | |
var rowPadding = radius * 2 / rowCount; | |
clocks = []; | |
var i=0; | |
var j=0; | |
for (;i<colCount;i++) { | |
clocks[i] = []; | |
for (j=0;j<rowCount;j++) { | |
clocks[i].push({ | |
x: colW + i * colW + (i + 1) * colPadding, | |
y: rowH + j * rowH + (j + 1) * rowPadding, | |
r: radius, | |
hour: 0, | |
minute: 0 | |
}); | |
} | |
} | |
} | |
setInterval(animate, 50); | |
function drawStuff() { | |
var i=0; | |
var j=0; | |
for (;i<colCount;i++) { | |
for (j=0;j<rowCount;j++) { | |
drawClock(clocks[i][j]); | |
} | |
} | |
} | |
function drawClock(c) { | |
context.beginPath(); | |
context.arc(c.x, c.y, c.r, 0, 2 * Math.PI, false); | |
context.lineWidth = 5; | |
context.strokeStyle = '#000000'; | |
context.stroke(); | |
drawLine(c, c.hour, hourToAngle); | |
drawLine(c, c.minute, minuteToAngle); | |
} | |
function drawLine(c, value, conFunc) { | |
context.beginPath(); | |
context.moveTo(c.x, c.y); | |
var offset = angleToOffset(conFunc(value), c.r); | |
context.lineTo(c.x + offset.x, c.y + offset.y); | |
context.stroke(); | |
} | |
function hourToAngle(h) { return (h - 3) / 12 * 2 * Math.PI; } | |
function minuteToAngle(m) { return (m - 15) / 60 * 2 * Math.PI; } | |
function angleToOffset(a, r) { return { x: Math.cos(a) * r, y: Math.sin(a) * r }; } | |
})(); | |
</script> | |
</body> | |
</html> |
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