simulations/xronometro.html at master · eirkostop/simulations · GitHub

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<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8" name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Χρονόμετρο</title>
  <link rel="shortcut icon" href="img/favicon.ico" type="image/x-icon">
  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.2.0/css/all.css"
    integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">
  <link rel="stylesheet" href="https://physiquiz.gr/wp-content/uploads/fonts/BPtypewrite.css">
  <style>
    .half {
      width: 50%;
    }

    @media only screen and (max-width:600px) {

      /* For mobile phones: */
      .half {
        width: 100%;
      }
    }

    .slider {
      width: 80%;
      opacity: 0.7;
      -webkit-transition: .2s;
      transition: opacity .2s;
    }

    .slider:hover {
      opacity: 1;
    }

    .slider::-moz-range-thumb {
      background: #008982;
      cursor: pointer;
      width: 10px;
      border: none;
      left: 0;
    }

    .myCanvas-button {
      padding: .4em 1em;
      display: inline-block;
      position: relative;
      line-height: normal;
      margin-right: .1em;
      cursor: pointer;
      vertical-align: middle;
      text-align: center;
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
      overflow: visible;
    }

    body {
      max-width: 500px;
      margin-left: auto;
      margin-right: auto;
      color: #333;
      font-family: BPTypewrite, sans-serif, 'Arial Narrow';
      margin-top: auto;
      background: transparent;
      font-size: 16px;
    }
  </style>
</head>

<body>
  <div
    style="background:white; border:#ccc 2px solid; border-radius:5px; text-align:center; max-width:500px; padding: 5px 0 5px 0;">
    <div class="half" style=" float: left; text-align:center;"><span style="font-weight:bold"> Χρονόμετρο
        <hr style="height:2px;border-width:0;color:gray;background-color:#ccc"></span></div>
    <div class="half" style=" float: left; text-align:center;"> <span>&copy Περί ΦυσιQuiz</span>
      <hr style="height:2px;border-width:0;background-color:#ccc">
    </div>
    <div style="width:100%;">
      <i id="startStop" class="fa fa-play myCanvas-button" style="color:#333" onclick="startStopMotion()"
        title="Έναρξη"></i>
      <i class="fa fa-redo myCanvas-button" style="color:#333" onclick="restartMotion();" title="Επανεκκίνηση"></i>
    </div>
    <div style="width:50%; float: left; text-align:center;">
      <canvas style="position:relative; background:white" id="a">Please update your browser!</canvas>
    </div>
    <div style="width:50%; float: left; text-align:center;">
      <canvas style="position:relative; background:white" id="d">Please update your browser!</canvas>
    </div>
    <div class="half" style=" float: left; text-align:center;">
      <p><span style="font-weight:bold">Αναλογικό χρονόμετρο</span><br>
        Χρόνος t = <span id="analog"></span> s<br>
        Ακρίβεια: Δευτερολέπτου</p>
    </div>
    <div class="half" style="float: left; text-align:center;">
      <p><span style="font-weight:bold">Ψηφιακό χρονόμετρο</span><br>
        Χρόνος t = <span id="digital" style="width:50px;display: inline-block"></span> s</p>
      Ακρίβεια:<br>
      <div style="text-align:left; padding-left:10px;" id="test">
        <input type="radio" name="akriveia" id="radio1"> Δευτερολέπτου<br>
        <input type="radio" name="akriveia" id="radio2"> Δεκάτου Δευτ.<br>
        <input type="radio" name="akriveia" id="radio3" checked> Εκατοστού Δευτ.<br>
        <input type="radio" name="akriveia" id="radio4"> Χιλιοστού Δευτ.<br>
      </div>
    </div>
    &nbsp;
  </div>
  <script>
    const a = document.getElementById('a')
    const actx = a.getContext("2d");
    const d = document.getElementById('d')
    const dctx = d.getContext("2d");
    const cornerRadius = 5;
    let t = 0;
    let pointerX, pointerY, scale = 1;
    let timer;
    let start, pausetime = 0;
    initialize();

    function initialize() {
      window.addEventListener('resize', resizeCanvas, false);
      resizeCanvas();
    }

    function resizeCanvas() {
      if (window.innerWidth < 500) {
        scale = window.innerWidth / 500;
        a.width = 250 * scale - 2;
        a.height = 250 * scale;
        actx.scale(scale, scale);
        scale = window.innerWidth / 500;
        d.width = 250 * scale - 2;
        d.height = 250 * scale;
        dctx.scale(scale, scale);
      }
      if (window.innerWidth >= 500) {
        a.width = 248;
        a.height = 250;
        d.width = 248;
        d.height = 250;
      }
      drawClock(125, 125, t);
      drawDigital(125, 125, t);
    }
    document.getElementById('test').onclick = function () {
      drawClock(125, 125, t);
      drawDigital(125, 125, t);
    }

    function drawClock(x0, y0, time) {
      let t = time.toFixed(0);
      let x = x0 + 90 * Math.cos(2 * Math.PI / 60 * t - Math.PI / 2);
      let y = y0 + 90 * Math.sin(2 * Math.PI / 60 * t - Math.PI / 2);
      let x1 = x0 + 90 * Math.cos(2 * Math.PI / 3600 * t - Math.PI / 2);
      let y1 = y0 + 90 * Math.sin(2 * Math.PI / 3600 * t - Math.PI / 2);
      //Draw clock
      actx.beginPath();
      actx.arc(x0, y0, 100, 0, 2 * Math.PI);
      actx.lineWidth = 2;
      actx.fillStyle = "#EDFAFF"
      actx.fill();
      //Draw tickmarks
      for (var j = 0; j < 60; j++) {
        actx.beginPath();
        actx.moveTo(x0 + 100 * Math.cos(2 * Math.PI / 60 * j), y0 + 100 * Math.sin(2 * Math.PI / 60 * j));
        actx.lineTo(x0 + 95 * Math.cos(2 * Math.PI / 60 * j), y0 + 95 * Math.sin(2 * Math.PI / 60 * j));
        actx.lineWidth = 2;
        actx.strokeStyle = "rgb(91, 179, 175)";
        actx.stroke();
      }
      for (var i = 0; i < 13; i++) {
        actx.beginPath();
        actx.moveTo(x0 + 100 * Math.cos(2 * Math.PI / 12 * i), y0 + 100 * Math.sin(2 * Math.PI / 12 * i));
        actx.lineTo(x0 + 80 * Math.cos(2 * Math.PI / 12 * i), y0 + 80 * Math.sin(2 * Math.PI / 12 * i));
        actx.lineWidth = 2;
        actx.strokeStyle = "rgb(91, 179, 175)";
        actx.stroke();
      }
      //Draw indexes
      actx.beginPath();
      actx.moveTo(x0, y0);
      actx.lineTo(x1, y1);
      actx.lineWidth = 4;
      actx.strokeStyle = "#008982"
      actx.stroke();
      actx.beginPath();
      actx.arc(x1, y1, 2, 0, 2 * Math.PI);
      actx.arc(x0, y0, 2, 0, 2 * Math.PI);
      actx.fillStyle = "#008982"
      actx.fill();
      actx.beginPath();
      actx.moveTo(x0, y0);
      actx.lineTo(x, y);
      actx.lineWidth = 3;
      actx.strokeStyle = "#333"
      actx.stroke();
      actx.beginPath();
      actx.arc(x, y, 2, 0, 2 * Math.PI);
      actx.arc(x0, y0, 2, 0, 2 * Math.PI);
      actx.fillStyle = "#333"
      actx.fill();
      //Show time below
      document.getElementById("analog").innerHTML = t;
    }

    function drawDigital(x0, y0, time) {
      //Draw clock
      dctx.beginPath();
      dctx.arc(x0, y0, 100, 0, 2 * Math.PI);
      dctx.lineWidth = 2;
      dctx.fillStyle = "#EDFAFF"
      dctx.fill();
      drawScreen(x0 - 80, y0 - 40, 160, 80, time);
      //show time
      const element = document.getElementById("digital");
      if (document.getElementById('radio1').checked) element.innerHTML = time.toFixed(0);
      else if (document.getElementById('radio2').checked) element.innerHTML = time.toFixed(1);
      else if (document.getElementById('radio3').checked) element.innerHTML = time.toFixed(2);
      else element.innerHTML = time.toFixed(3);
    }

    function moveClock() {
      t = new Date().getTime() / 1000 - start + pausetime;
      dctx.clearRect(0, 0, 250, 250);
      actx.clearRect(0, 0, 250, 250);
      drawDigital(125, 125, t);
      drawClock(125, 125, t);
    }

    function startStopMotion() {
      const element = document.querySelector("#startStop");
      if (element.classList.contains("fa-play")) {
        element.classList.add("fa-pause");
        element.classList.remove("fa-play");
        element.setAttribute("title", "Παύση - Καταγραφή μέτρησης");
        startMotion();
      } else if (element.classList.contains("fa-pause")) {
        element.classList.add("fa-play");
        element.classList.remove("fa-pause");
        element.setAttribute("title", "Συνέχιση");
        stopMotion();
      }
    }

    function startMotion() {
      window.clearInterval(timer);
      start = new Date().getTime() / 1000;
      timer = window.setInterval(moveClock, 1000 / 60);
    }

    function stopMotion() {
      pausetime = t;
      window.clearInterval(timer);
    }

    function restartMotion() {
      t = 0;
      drawClock(125, 125, t);
      drawDigital(125, 125, t);
      window.clearInterval(timer);
      pausetime = 0;
    }
    //Draw screen
    function drawScreen(rectX, rectY, rectWidth, rectHeight, time) {
      dctx.beginPath();
      dctx.moveTo(rectX, rectY + cornerRadius);
      dctx.arcTo(rectX, rectY, rectX + cornerRadius, rectY, cornerRadius);
      dctx.lineTo(rectX + rectWidth - cornerRadius, rectY);
      dctx.arcTo(rectX + rectWidth, rectY, rectX + rectWidth, rectY + cornerRadius, cornerRadius);
      dctx.lineTo(rectX + rectWidth, rectY + rectHeight - cornerRadius);
      dctx.arcTo(rectX + rectWidth, rectY + rectHeight, rectX + rectWidth - cornerRadius, rectY + rectHeight,
        cornerRadius);
      dctx.lineTo(rectX + cornerRadius, rectY + rectHeight);
      dctx.arcTo(rectX, rectY + rectHeight, rectX, rectY + rectHeight - cornerRadius, cornerRadius);
      dctx.lineTo(rectX, rectY + cornerRadius);
      dctx.closePath();
      var grd = dctx.createLinearGradient(rectX, rectY, rectX + rectWidth, rectY + rectHeight);
      grd.addColorStop(0, "#f4f4f4");
      grd.addColorStop(1, "#fff");
      dctx.fillStyle = grd;
      dctx.fill();
      dctx.strokeStyle = "#59A8A4";
      dctx.stroke();
      //Draw Digits
      dctx.beginPath();
      dctx.fillStyle = "#333";
      dctx.font = "40px BPTypeWrite";
      if (document.getElementById('radio1').checked) {
        dctx.fillText(t.toFixed(0) + "s", rectX + 10, rectY + rectHeight / 2 + 20);
      }
      if (document.getElementById('radio2').checked) {
        dctx.fillText(time.toFixed(1) + "s", rectX + 10, rectY + rectHeight / 2 + 20);
      }
      if (document.getElementById('radio3').checked) {
        if (time >= 100) {
          dctx.font = "30px BPTypeWrite";
        }
        dctx.fillText(time.toFixed(2) + "s", rectX + 10, rectY + rectHeight / 2 + 20);
      }
      if (document.getElementById('radio4').checked) {
        if (time >= 10) {
          dctx.font = "30px BPTypeWrite";
        }
        dctx.fillText(time.toFixed(3) + "s", rectX + 10, rectY + rectHeight / 2 + 20);
      }
      dctx.fill();
    }
  </script>
</body>

</html>