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clockSecondsFluid.html
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<!DOCTYPE html>
<!--http://saturnboy.com/2013/10/html5-canvas-clock/-->
<html><head>
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
<title>clock</title>
<style>
body {
background-color:#3084e2;
}
#cnv {
position:absolute;
top:50%;
left:50%;
width:500px;
height:500px;
margin:-250px 0 0 -250px;
}
</style>
</head>
<body onload="clock();">
<canvas height="500" width="500" id="cnv"></canvas>
<script>
function clock() {
var canvas = document.getElementById('cnv');
//guarantee canvas is supported
if (!canvas.getContext) {
alert('canvas not supported!');
return;
}
canvas.width = 500;
canvas.height = 500;
tick();
}
function tick() {
var d = new Date();
var h = d.getHours();
var m = d.getMinutes() + h * 60;
var s = d.getSeconds() + m * 60;
var ms = d.getMilliseconds();
//multiply by 6 to get basic sec angle, then add up to
//5.994 degrees (999 * 0.006) to account for milliseconds
var secAngle = -90 + s * 6 + ms * 0.006;
//multiply by 6 to get basic min angle, then add up to
//5.9 degrees (59 * 0.1) to account for seconds
var minAngle = -90 + s * 0.1;
//multiply by 30 to get basic hour angle, then add up to
//29.5 degrees (59 * 0.5) to account for minutes, and up to
//0.4916666667 degrees (59 * 1/120) to account for seconds
var hourAngle = -90 + (s / 120);
var canvas = document.getElementById('cnv');
var ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, 500, 500);
drawFace(ctx);
ctx.translate(250, 250);
drawTicks(ctx);
drawHourHand(ctx, hourAngle);
drawMinHand(ctx, minAngle);
drawSecHand(ctx, secAngle);
ctx.translate(-250, -250);
drawFace2(ctx);
setTimeout(tick, 31);
}
function drawFace(ctx) {
//outer black ring
ctx.beginPath();
ctx.arc(250, 250, 250, 0, 2 * Math.PI);
ctx.fillStyle = '#111';
ctx.fill();
ctx.closePath();
//next light grey ring
ctx.beginPath();
ctx.arc(250, 250, 248, 0, 2 * Math.PI);
ctx.fillStyle = '#bbb';
ctx.fill();
ctx.closePath();
//outer gradient bezel
var g1x1 = 250 + 246 * Math.cos(4/3*Math.PI);
var g1y1 = 250 + 246 * Math.sin(4/3*Math.PI)
var g1x2 = 250 + 246 * Math.cos(1/3*Math.PI);
var g1y2 = 250 + 246 * Math.sin(1/3*Math.PI);
var g1 = ctx.createLinearGradient(g1x1,g1y1,g1x2,g1y2);
g1.addColorStop(0, '#f4f4f4');
g1.addColorStop(1, '#000');
ctx.beginPath();
ctx.arc(250, 250, 246, 0, 2 * Math.PI);
ctx.fillStyle = g1;
ctx.fill();
ctx.closePath();
//next outer bezel
var g2x1 = 250 + 224 * Math.cos(4/3*Math.PI);
var g2y1 = 250 + 224 * Math.sin(4/3*Math.PI)
var g2x2 = 250 + 224 * Math.cos(1/3*Math.PI);
var g2y2 = 250 + 224 * Math.sin(1/3*Math.PI);
var g2 = ctx.createLinearGradient(g2x1,g2y1,g2x2,g2y2);
g2.addColorStop(0, '#000');
g2.addColorStop(1, '#777');
ctx.beginPath();
ctx.arc(250, 250, 224, 0, 2 * Math.PI);
ctx.fillStyle = g2;
ctx.fill();
ctx.closePath();
//tan clock face
ctx.beginPath();
ctx.arc(250, 250, 212, 0, 2 * Math.PI);
ctx.fillStyle = '#d5c595';
ctx.fill();
ctx.closePath();
}
function drawTicks(ctx) {
//radial lines
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 0);
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 30);
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 60);
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 90);
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 120);
drawPath(ctx, 'M -108,-1 L 108,-1 108,1 -108,1 Z', '#baa77c', 150);
//triangle ticks
drawPath(ctx, 'M 154,0 L 178,-6 178,6 Z', '#111', 0);
drawPath(ctx, 'M 154,0 L 178,-6 178,6 Z', '#111', 90);
drawPath(ctx, 'M 154,0 L 178,-6 178,6 Z', '#111', 180);
drawPath(ctx, 'M 154,0 L 178,-6 178,6 Z', '#111', -90);
//long brown ticks
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', 30);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', 60);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', 120);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', 150);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', -30);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', -60);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', -120);
drawPath(ctx, 'M 156,-2 L 180,-2 180,2 156,2 Z', '#baa77c', -150);
//text labels: 3,6,9,12
ctx.font = '24pt Georgia';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = '#444';
ctx.fillText('3', 140, -4);
ctx.fillText('6', 0, 138);
ctx.fillText('9', -140, -4);
ctx.fillText('12', 0, -140);
//big dot above 12
ctx.beginPath();
ctx.arc(0, -195, 4, 0, 2 * Math.PI);
ctx.fillStyle = '#444';
ctx.fill();
ctx.closePath();
for (var i = 0; i < 360; i += 30) {
//outer tick squares
drawPath(ctx, 'M 180,-3 L 184,-3 184,3 180,3 Z', 'rgba(68,68,68,0.8)', i);
//inner tick squares
drawPath(ctx, 'M 110,-3 L 120,-3 120,3 110,3 Z', 'rgba(68,68,68,0.8)', i);
//outer text labels
var lbl = '' + Math.round(i/6 + 15);
if (lbl == '60') lbl = '';
if (lbl == '65') lbl = '5';
if (lbl == '70') lbl = '10';
var x = 195 * Math.cos(i * Math.PI / 180.0);
var y = 195 * Math.sin(i * Math.PI / 180.0);
ctx.save();
ctx.translate(x,y);
ctx.rotate((i + 90 - (i > 0 && i < 180 ? 180 : 0)) * Math.PI / 180.0);
ctx.font = '9pt Georgia';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = 'rgba(68,68,68,0.8)';
ctx.fillText(lbl, 0, 0);
ctx.restore();
//far outer dots between labels
ctx.beginPath();
x = 195 * Math.cos((i+15) * Math.PI / 180);
y = 195 * Math.sin((i+15) * Math.PI / 180);
ctx.arc(x, y, 1.5, 0, 2 * Math.PI);
ctx.fillStyle = '#444';
ctx.fill();
ctx.closePath();
for (var j = 0; j < 25; j += 6) {
if (j != 0) {
//outer tick ring - long ticks
drawPath(ctx, 'M 174,-0.5 L 184,-0.5 184,0.5 174,0.5 Z', '#444', i+j);
//inner tick ring - short ticks
drawPath(ctx, 'M 114,-0.5 L 120,-0.5 120,0.5 114,0.5 Z', 'rgba(68,68,68,0.8)', i+j);
}
for (var k = 1.5; k < 5; k += 1.5) {
//outer tick ring - short ticks
drawPath(ctx, 'M 180,-0.3 L 184,-0.3 184,0.3 180,0.3 Z', 'rgba(68,68,68,0.5)', i+j+k);
}
}
}
}
function drawSecHand(ctx,ang) {
drawPath(ctx, 'M -50,0 L -45,-5 -25,-5 -22,-2 22,-2 25,-5 180,0 25,5 22,2 -22,2 -25,5 -45,5 Z', '#c21', ang);
ctx.beginPath();
ctx.arc(0, 0, 8, 0, 2 * Math.PI);
ctx.fillStyle = '#c21';
ctx.fill();
ctx.closePath();
}
function drawMinHand(ctx,ang) {
drawPath(ctx, 'M 0,0 L 1,-2 20,-2 22,-5 122,-5 124,-2 146,-2 168,0 146,2 124,2 122,5 22,5 20,2 1,2 0,0 24,0 24,2 120,2 122,0 120,-2 24,-2 24,0 Z', '#111', ang);
}
function drawHourHand(ctx,ang) {
drawPath(ctx, 'M 0,0 L 1,-3 14,-3 17,-7 97,-7 100,-3 112,-2 134,0 112,2 100,3 97,7 17,7 14,3 1,3 0,0 18,0 21,3 94,3 96,0 94,-3 21,-3 18,0 Z', '#000', ang);
}
function drawFace2(ctx) {
//outer center button ring
var g1x1 = 250 + 5 * Math.cos(4/3*Math.PI);
var g1y1 = 250 + 5 * Math.sin(4/3*Math.PI)
var g1x2 = 250 + 5 * Math.cos(1/3*Math.PI);
var g1y2 = 250 + 5 * Math.sin(1/3*Math.PI);
var g1 = ctx.createLinearGradient(g1x1,g1y1,g1x2,g1y2);
g1.addColorStop(0, '#999');
g1.addColorStop(1, '#333');
ctx.beginPath();
ctx.arc(250, 250, 5, 0, 2 * Math.PI);
ctx.fillStyle = g1;
ctx.fill();
ctx.closePath();
//inner center button
var g2x1 = 250 + 3 * Math.cos(4/3*Math.PI);
var g2y1 = 250 + 3 * Math.sin(4/3*Math.PI)
var g2x2 = 250 + 3 * Math.cos(1/3*Math.PI);
var g2y2 = 250 + 3 * Math.sin(1/3*Math.PI);
var g2 = ctx.createLinearGradient(g2x1,g2y1,g2x2,g2y2);
g2.addColorStop(0, '#ccc');
g2.addColorStop(1, '#aaa');
ctx.beginPath();
ctx.arc(250, 250, 3, 0, 2 * Math.PI);
ctx.fillStyle = g2;
ctx.fill();
ctx.closePath();
//highlight (gradient overlay)
var g3x1 = 250 + 212 * Math.cos(4/3*Math.PI);
var g3y1 = 250 + 212 * Math.sin(4/3*Math.PI)
var g3x2 = 250 + 212 * Math.cos(1/3*Math.PI);
var g3y2 = 250 + 212 * Math.sin(1/3*Math.PI);
var g3 = ctx.createLinearGradient(g3x1,g3y1,g3x2,g3y2);
g3.addColorStop(0, 'rgba(255,255,255,0.5)');
g3.addColorStop(1, 'rgba(255,255,255,0)');
ctx.beginPath();
ctx.arc(250, 250, 212, 0, 2 * Math.PI);
ctx.fillStyle = g3;
ctx.fill();
ctx.closePath();
}
/** Simple svg path parser that only understands M (move to) and L (line to). */
function drawPath(ctx,path,fill,ang) {
ctx.save();
ctx.rotate(ang == undefined ? 0 : ang * Math.PI / 180.0);
ctx.beginPath();
var parts = path.split(' ');
while (parts.length > 0) {
var part = parts.shift();
if (part == 'M') {
coords = parts.shift().split(',');
ctx.moveTo(coords[0], coords[1]);
} else if (part == 'L') {
continue;
} else if (part == 'Z') {
break;
} else if (part.indexOf(',') >= 0) {
coords = part.split(',');
ctx.lineTo(coords[0], coords[1]);
}
}
ctx.closePath();
ctx.fillStyle = (fill == undefined ? '#000' : fill);
ctx.fill();
ctx.restore();
}
</script>
</body></html>