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clock.js
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class Clock extends Domel {
T
stepperSeconds
stepperMinutes
stepperHours
constructor(canvasSel, T=-1) {
super(canvasSel)
this.T = T
const ff = 1.0
this.stepperHours = new Stepper(ff/3600)
this.stepperMinutes = new Stepper(ff/60)
this.stepperSeconds = new Stepper(ff)
}
draw(ms) {
const canvas = this.el
const {width: W, height: H} = canvas
const ctx = canvas.getContext('2d')
ctx.reset()
ctx.save();
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, W/2, H/2);
ctx.transform(2.000000, 0.000000, 0.000000, 2.000000, 0, 0);
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, -128, -128);
this.drawDial(ms)
this.drawHands(ms)
ctx.restore();
}
steppersStartMaybe(ms) {
if (this.T<0) {
this.T = new Date()
- new Date(new Date().toISOString().split('T').shift()).getTime()
- new Date().getTimezoneOffset() * 60000
}
let T = this.T
// console.log({T})
if (!this.stepperHours.isActive) {
this.stepperHours.start()
this.stepperHours.rotr.phase = ((T/3600000)%12)/12
}
T %= 3600000
if (!this.stepperMinutes.isActive) {
this.stepperMinutes.start()
this.stepperMinutes.rotr.phase = ((T/60000)%60)/60
}
T %= 60000
if (!this.stepperSeconds.isActive) {
this.stepperSeconds.start()
this.stepperSeconds.rotr.phase = ((T/1000)%60)/60
console.log({
rotrs: {
hours: this.stepperHours.rotr,
minutes: this.stepperMinutes.rotr,
seconds: this.stepperSeconds.rotr,
}
})
}
}
drawHands(ms) {
let cost, sint
this.steppersStartMaybe(ms)
const {radians: secondsRadians}
= this.stepperSeconds.step(ms)
const {radians: minutesRadians}
= this.stepperMinutes.step(ms)
const {radians: hoursRadians}
= this.stepperHours.step(ms)
const canvas = this.el
const ctx = canvas.getContext('2d')
const {width: W, height: H} = canvas
// #layer2
// #hour-hand
cost = Math.cos(hoursRadians)
sint = Math.sin(hoursRadians)
ctx.save();
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, 128, 128);
ctx.transform(cost, sint, -sint, cost, 0, 0);
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, -128, -128);
ctx.beginPath();
ctx.fillStyle = 'rgb(128, 0, 0)';
ctx.lineWidth = 0.279296;
ctx.moveTo(129.412990, 60.188843);
ctx.lineTo(134.027040, 66.472660);
ctx.lineTo(138.141510, 127.383510);
ctx.bezierCurveTo(138.520540, 132.994810, 133.613790, 137.535320, 127.989720, 137.535320);
ctx.bezierCurveTo(122.365610, 137.535320, 117.837900, 133.007610, 117.837900, 127.383510);
ctx.lineTo(122.190920, 66.472660);
ctx.lineTo(126.666670, 60.195839);
ctx.closePath();
ctx.fill();
ctx.restore();
// #minute-hand
cost = Math.cos(minutesRadians)
sint = Math.sin(minutesRadians)
ctx.save();
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, 128, 128);
ctx.transform(cost, sint, -sint, cost, 0, 0);
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, -128, -128);
ctx.beginPath();
ctx.fillStyle = 'rgb(0, 128, 0)';
ctx.lineWidth = 0.282287;
ctx.moveTo(129.862710, 40.032634);
ctx.lineTo(132.868020, 45.782080);
ctx.lineTo(136.191290, 124.695940);
ctx.bezierCurveTo(136.490170, 131.793090, 132.534250, 135.128950, 127.991690, 135.128950);
ctx.bezierCurveTo(123.449110, 135.128950, 119.792080, 131.808950, 119.792080, 124.695940);
ctx.lineTo(123.308010, 45.782080);
ctx.lineTo(126.125010, 40.035298);
ctx.closePath();
ctx.fill();
ctx.restore();
// #seconds-hand
cost = Math.cos(secondsRadians)
sint = Math.sin(secondsRadians)
ctx.save();
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, 128, 128);
ctx.transform(cost, sint, -sint, cost, 0, 0);
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, -128, -128);
ctx.beginPath();
ctx.strokeStyle = 'rgb(255, 204, 0)';
ctx.lineWidth = 4.189440;
ctx.moveTo(128.000000, 138.535900);
ctx.lineTo(128.000000, 31.926484);
ctx.stroke();
// #seconds-pivot
ctx.beginPath();
ctx.fillStyle = 'rgb(255, 204, 0)';
ctx.lineWidth = 2.140090;
ctx.arc(128.000000, 128.000020, 5.571456, 0.000000, 6.28318531, 1);
ctx.fill();
}
drawDial(ms) {
const canvas = this.el
const ctx = canvas.getContext('2d')
// #layer1
ctx.save();
ctx.transform(1.000000, 0.000000, 0.000000, 1.000000, -46.183300, -39.385200);
// #path1
ctx.beginPath();
ctx.fillStyle = 'rgb(128, 128, 0)';
ctx.lineWidth = 0.279296;
ctx.arc(174.183350, 167.385210, 122.394130, 0.000000, 6.28318531, 1);
ctx.fill();
// #path9
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 5.585920;
ctx.moveTo(280.421620, 167.385190);
ctx.lineTo(294.284510, 167.385190);
ctx.stroke();
// #path10
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 5.585920;
ctx.moveTo(67.945071, 167.385190);
ctx.lineTo(54.082183, 167.385190);
ctx.stroke();
// #path12
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 5.586370;
ctx.moveTo(174.183350, 61.146928);
ctx.lineTo(174.183350, 47.284039);
ctx.stroke();
// #path13
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 5.585920;
ctx.moveTo(174.183350, 273.623470);
ctx.lineTo(174.183350, 287.486360);
ctx.stroke();
// #path14
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(227.302480, 75.380160);
ctx.lineTo(234.233920, 63.374546);
ctx.stroke();
// #path15
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(121.064200, 259.390250);
ctx.lineTo(114.132760, 271.395860);
ctx.stroke();
// #path16
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(266.188380, 114.266060);
ctx.lineTo(278.194000, 107.334610);
ctx.stroke();
// #path17
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(82.178301, 220.504330);
ctx.lineTo(70.172686, 227.435780);
ctx.stroke();
// #path18
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(121.064200, 75.380160);
ctx.lineTo(114.132760, 63.374546);
ctx.stroke();
// #path19
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(227.302480, 259.390250);
ctx.lineTo(234.233920, 271.395860);
ctx.stroke();
// #path20
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(82.178314, 114.266060);
ctx.lineTo(70.172701, 107.334610);
ctx.stroke();
// #path21
ctx.beginPath();
ctx.strokeStyle = 'rgb(221, 255, 85)';
ctx.lineWidth = 2.792960;
ctx.moveTo(266.188390, 220.504330);
ctx.lineTo(278.194010, 227.435780);
ctx.stroke();
ctx.restore();
}
}