NiteRide.github.io/keolapse_sizer.php at main · NiteRide/NiteRide.github.io · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Keolapse Circle Template</title>
  <style>
    #flex-container {
        display: flex;
        justify-content: space-between;
        max-width: 1014px;
        margin-left: 5px;
        margin right: 1014px;
        align-items: center;
    }

    #flex-container p {
        margin: 0;
        padding: 0 5px;
    }

    #data {
        display: flex;             /* Use Flexbox for the data section */
        justify-content: space-between;
        padding: 0 2px;
    }
    #data p {
        margin: 0;
        padding: 0 10px;
        margin-right: 20px;
    }
    #data p:last-child {
        margin-right: 0;
    }

    #container {
      position: relative;
      width: 1014px;
      height: 760px;
      border: 2px solid #ccc;
      background-size: contain;
      background-repeat: no-repeat;
      background-position: center;
      margin-bottom: 0px;
    }

    #circle {
      position: absolute;
      width: 758px;
      height: 758px;
      border: 1px solid red;
      border-radius: 50%;
      left: 12.5%;
      cursor: move;
    }

    #resize-handle {
      position: absolute;
      width: 10px;
      height: 10px;
      background: red;
      bottom: 0;
      right: 0;
      cursor: se-resize;
    }

    #data {
      font-family: monospace;
      font-size: 16px;
    }
  </style>
</head>
<body>
  <h2>Keolapse Circle Template Tool</h2>
  <h5>1. Browse to load an image file created by your Allsky camera.<br>
  2. Select and drag to position the circle, and use the handle in the right bottom corner to resize. (it's ok if the circle goes outside the border of your image)<br>
  3. The data at the top should give you a good starting point for setting up your keolapse circle.</h5>

  <div id="flex-container">
      <input type="file" id="imageUpload" accept="image/*">
      <p id="file-name"></p>

      <div id="data">
          <p id="radius-factor">Radius Factor: </p>
          <p id="x-offset">X Offset: </p>
          <p id="y-offset">Y Offset: </p>
      </div>
  </div>
  <br>
  <div id="container">
    <div id="circle">
      <div id="resize-handle"></div>
    </div>
  </div>

  <script>
    window.addEventListener('DOMContentLoaded', () => {
      const circle = document.getElementById('circle');
      const resizeHandle = document.getElementById('resize-handle');
      const radiusFactorDisplay = document.getElementById('radius-factor');
      const xOffsetDisplay = document.getElementById('x-offset');
      const yOffsetDisplay = document.getElementById('y-offset');
      const container = document.getElementById('container');
      const imageUpload = document.getElementById('imageUpload');
      const fileNameDisplay = document.getElementById('file-name');

      let isDragging = false;
      let isResizing = false;
      let offsetX, offsetY;
      let originalImageWidth = null;
      let originalImageHeight = null;

      function updateDataDisplays() {
        const circleRect = circle.getBoundingClientRect();
        const containerRect = container.getBoundingClientRect();
        const radius = circleRect.width / 2;
        const radiusFactor = radius / Math.min(containerRect.width, containerRect.height);
        const centerX = circleRect.left + radius;
        const centerY = circleRect.top + radius;
        const xOffset = centerX - (containerRect.left + containerRect.width / 2);
        const yOffset = centerY - (containerRect.top + containerRect.height / 2);

        let scaledX = xOffset;
        let scaledY = yOffset;

        if (originalImageWidth && originalImageHeight) {
          scaledX = xOffset / containerRect.width * originalImageWidth;
          scaledY = yOffset / containerRect.height * originalImageHeight;
        }

        radiusFactorDisplay.textContent = `Radius Factor: ${radiusFactor.toFixed(2)}`;
        xOffsetDisplay.textContent = `X Offset: ${scaledX.toFixed(0)}`;
        yOffsetDisplay.textContent = `Y Offset: ${scaledY.toFixed(0)}`;
      }

      circle.addEventListener('mousedown', (e) => {
        if (e.target !== resizeHandle) {
          isDragging = true;
          offsetX = e.clientX - circle.getBoundingClientRect().left;
          offsetY = e.clientY - circle.getBoundingClientRect().top;
        }
      });

      document.addEventListener('mousemove', (e) => {
        if (isDragging) {
          const containerRect = container.getBoundingClientRect();
          let newX = e.clientX - offsetX - containerRect.left;
          let newY = e.clientY - offsetY - containerRect.top;
          circle.style.left = newX + 'px';
          circle.style.top = newY + 'px';
          updateDataDisplays();
        } else if (isResizing) {
          const circleRect = circle.getBoundingClientRect();
          const newDiameter = Math.max(50, e.clientX - circleRect.left);
          circle.style.width = newDiameter + 'px';
          circle.style.height = newDiameter + 'px';
          updateDataDisplays();
        }
      });

      document.addEventListener('mouseup', () => {
        isDragging = false;
        isResizing = false;
      });

      resizeHandle.addEventListener('mousedown', (e) => {
        e.stopPropagation();
        isResizing = true;
      });

      imageUpload.addEventListener('change', (event) => {
        const file = event.target.files[0];
        if (file && file.type.startsWith('image/')) {
          fileNameDisplay.textContent = file.name;
          const reader = new FileReader();
          reader.onload = function(e) {
            const img = new Image();
            img.onload = function() {
              originalImageWidth = img.width;
              originalImageHeight = img.height;
              container.style.backgroundImage = `url('${e.target.result}')`;
              updateDataDisplays();
            };
            img.src = e.target.result;
          };
          reader.readAsDataURL(file);
        }
      });

      updateDataDisplays();
    });
  </script>
</body>
</html>