freeimagedither/index.html at main · 901D3/freeimagedither · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1" />
    <title>Free Image Dithering</title>
    <meta name="description" content="A tool for dither images" />
    <link rel="icon" type="image/x-icon" href="favicon.ico" />
    <link rel="stylesheet" href="styles.css" />
    <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Ubuntu" />
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/@fontsource/unifont@5.1.0/index.min.css" />

    <link rel="preload" as="script" href="scripts/init.js" />
    <link rel="preload" as="script" href="scripts/resources/varErrDiffsRsrc-base.js" />
    <link rel="preload" as="script" href="scripts/resources/varErrDiffsRsrc-ostromoukhov.js" />
    <link rel="preload" as="script" href="scripts/resources/varErrDiffsRsrc-zhouFang.js" />
    <link rel="preload" as="script" href="scripts/lib/901D3/blue-noise-utils.js" />
    <link rel="preload" as="script" href="scripts/lib/901D3/blue-noise-float64.js" />
    <link rel="preload" as="script" href="scripts/generator.js" />
    <link rel="preload" as="script" href="scripts/dither.js" />
    <link rel="preload" as="script" href="scripts/locale.js" />
    <link rel="preload" as="script" href="scripts/sizing.js" />
    <link rel="preload" as="script" href="scripts/misc.js" />
    <link rel="preload" as="script" href="scripts/process.js" />
  </head>
  <body class="display-flex top-bottom-flow" style="gap: 8px">
    <span id="mobileNote" style="opacity: 0.7">Landscape mode is recommended on mobile</span>
    <div class="display-flex top-bottom-flow" style="gap: 15px">
      <span
        class="glowfire text-align-center vertical-align-top-margin color font-weight-bold"
        style="font-size: 175px"
        data-text="$title"></span>
      <!--<span class="text-align-center font-weight-bold" style="font-size: 25px" data-text="$subtitle"></span>-->
      <div class="firehr"></div>
    </div>
    <div class="display-flex left-right-flow width-fit-content" style="gap: 15px">
      <div class="display-flex top-bottom-flow" style="gap: 12px">
        <span class="font-weight-bold" style="font-size: 20px" data-text="$upload"></span>
        <input
          type="file"
          id="uploadFile"
          class="height-fit-content"
          title=".png, .jpg, .jpeg, .webp, .gif, .ico, .bmp, .avif"
          accept=".png, .jpg, .jpeg, .webp, .gif, .ico, .bmp, .avif" />
        <span class="font-weight-bold" style="font-size: 20px" data-text="$paste_link"></span>
        <input type="text" id="linkUrl" />
        <button onclick="image.src = gId('linkUrl').value;" data-text="$update"></button>
      </div>
    </div>
    <div class="bigContainer left-right-flow" style="gap: 20px">
      <div class="controls">
        <div class="settings_container">
          <div class="settings_label-select">
            <h2 data-text="$dither"></h2>
            <select id="dither">
              <option value="none" selected="selected">None</option>
              <option value="matrixThreshold" data-text="$matrix_thresh"></option>
              <option value="arithmetic" data-text="$arithmetic"></option>
              <option value="errDiffs" data-text="$err_diffs"></option>
              <option value="varErrDiffs" data-text="$var_err_diffs"></option>
              <option value="dotDiffs" data-text="$dot_diffs"></option>
            </select>
          </div>
          <div class="whitehr"></div>
          <div class="settings_label-select">
            <span data-text="$matrix_thresh"></span>
            <select id="matrix" class="disabled">
              <option value="threshold">Threshold</option>
              <option value="bayer2">Bayer 2²</option>
              <option value="bayer4">Bayer 4²</option>
              <option value="bayer8">Bayer 8²</option>
              <option value="bayer16">Bayer 16²</option>
              <option value="bayer32">Bayer 32²</option>
              <option value="bayer64">Bayer 64²</option>
              <option value="bayer128">Bayer 128²</option>
              <option value="bayer256">Bayer 256²</option>

              <option value="blueNoise">Blue Noise</option>

              <option value="checkerboard">Checkerboard</option>
              <option value="cluster">Cluster</option>
              <option value="fishnet">Fishnet</option>
              <option value="halftone">Halftone</option>
              <option value="rylander">Rylander</option>

              <option value="hatchLeft">Hatch Left</option>
              <option value="hatchRight">Hatch Right</option>
              <option value="hatchVertical">Hatch Vertical</option>
              <option value="hatchHorizontal">Hatch Horizontal</option>

              <option value="crossHatchLeft">Cross Hatch Left</option>
              <option value="crossHatchRight">Cross Hatch Right</option>
              <option value="crossHatchVertical">Cross Hatch Vertical</option>
              <option value="crossHatchHorizontal">Cross Hatch Horizontal</option>

              <option value="zigZag4">Zig Zag 4</option>
              <option value="zigZag8">Zig Zag 8</option>
              <option value="zigZag16">Zig Zag 16</option>

              <option value="dot4">Dot 4</option>
              <option value="dot8">Dot 8</option>

              <option value="cool1">cool1</option>
            </select>
          </div>
          <div id="matrixThreshDisp" class="settings_container disabled">
            <textarea id="matrixInput" placeholder="2D matrix only"></textarea>
            <input id="divisionInput" type="number" value="2" />
            <div class="settings_checkbox-label">
              <input type="checkbox" id="autoDiv" checked="" />
              <label for="autoDiv">Auto</label>
            </div>
          </div>
          <div class="whitehr"></div>
          <input
            type="file"
            id="uploadDitherImage"
            class="height-fit-content disabled"
            title=".png, .jpg, .jpeg, .webp, .gif, .ico, .bmp, .avif"
            accept=".png, .jpg, .jpeg, .webp, .gif, .ico, .bmp, .avif" />
          <div class="whitehr"></div>
          <div id="blueNoiseDisp" class="settings_container disabled">
            <canvas
              id="blueNoiseCanvas"
              data-text="$elN_A"
              style="border: 3px solid #ff0"></canvas>
            <div class="settings_label-select">
              <span>Algorithm</span>
              <select id="blueNoiseAlgo">
                <option value="extendedVACluster">Extended Void and Cluster</option>
                <option value="georgievFajardo">Georgiev-Fajardo(Relaxation)</option>
              </select>
            </div>
            <textarea
              id="blueNoiseCustomKernel"
              placeholder="Convolve kernel. 2D array"></textarea>
            <div class="settings_label-input">
              <span>Width</span>
              <input type="number" id="blueNoiseWidth" value="64" />
            </div>
            <div class="settings_label-input">
              <span>Height</span>
              <input type="number" id="blueNoiseHeight" value="64" />
            </div>
            <div class="settings_label-input">
              <span>Sigma radius multiplier</span>
              <input type="number" id="blueNoiseGaussianSigmaRadiusMultiplier" value="10" />
            </div>
            <div class="settings_label-input">
              <span>Sigma(Image)</span>
              <input type="number" id="blueNoiseSigmaImage" value="1.9" />
            </div>
            <div class="settings_label-input">
              <span>Sigma sample(candidate method)</span>
              <input type="number" id="blueNoiseSigmaSample" value="1" />
            </div>
            <div class="settings_label-input">
              <span>Samples</span>
              <input type="number" id="blueNoiseSamples" value="100" />
            </div>
            <div class="settings_label-input">
              <span>Iterations</span>
              <input type="number" id="blueNoiseIterations" value="15" />
            </div>
            <div class="settings_label-input">
              <span>MBC Candidates</span>
              <input type="number" id="blueNoiseMBCCandidates" value="20" />
            </div>
            <div class="settings_label-input">
              <span>P Norm</span>
              <input type="number" id="blueNoisePNorm" value="0.5" />
            </div>
            <div class="settings_checkbox-label-input">
              <input type="checkbox" id="blueNoiseUseAdaptiveSigma" />
              <label for="blueNoiseUseAdaptiveSigma">Use adaptive sigma(uneven dots fix)</label>
              <input type="number" id="blueNoiseInitialSigmaScale" value="0.4" />
            </div>
            <button onclick="blueNoiseWrapper()">Generate</button>
          </div>
          <div class="whitehr"></div>
          <div class="settings_label-select">
            <span data-text="$arithmetic"></span>
            <select id="arithmetic" class="disabled">
              <option value="arithmeticAdd" data-text="$arithmetic_add"></option>
              <option value="arithmeticAddConvariant" data-text="$arithmetic_add_conv"></option>
              <option value="arithmeticXor" data-text="$arithmetic_xor"></option>
              <option value="arithmeticXorConvariant" data-text="$arithmetic_xor_conv"></option>
              <option value="halftone" data-text="$halftone"></option>
              <option value="colorShiftedHalftone" data-text="$color_shifted"></option>
            </select>
          </div>
          <div id="arithmeticDisp" class="settings_container disabled">
            <textarea id="arithmeticInput" placeholder="'x', 'y', 'c'"></textarea>
          </div>
          <div class="whitehr"></div>
          <div class="settings_label-select">
            <span data-text="$err_diffs"></span>
            <select id="errDiffs" class="disabled">
              <option value="floydSteinberg">Floyd-Steinberg</option>
              <option value="falseFloydSteinberg">False Floyd-Steinberg</option>
              <option value="fan">Fan</option>
              <option value="shiauFan">Shiau-Fan</option>
              <option value="shiauFan2">Shiau-Fan 2</option>
              <option value="atkinson">Atkinson</option>
              <option value="burkes">Burkes</option>
              <option value="javisJudiceNinke">Jarvis-Judice-Ninke</option>
              <option value="stucki">Stucki</option>
              <option value="sierra">Sierra</option>
              <option value="sierraLite">Sierra Lite</option>
              <option value="sierra2">Sierra 2</option>
              <option value="box">Box</option>
              <option value="diagonal">Diagonal</option>
              <option value="pigeon">Steve Pigeon</option>
              <option value="kist">Robert Kist</option>
              <option value="arce">Stevenson Arce</option>
              <option value="xot">Xot(Perf Warning)</option>
              <option value="twoD">Two-Dim</option>
              <option value="oneD">One-Dim</option>
              <option value="knuth">Knuth</option>
              <option value="box3">Box 3²</option>
              <option value="box5">Box 5²</option>
              <option value="box7">Box 7²</option>
              <option value="box9">Box 9²</option>
              <option value="cross">Cross</option>
              <option value="diagonalCross">Diagonal Cross</option>
            </select>
          </div>
          <div id="errDiffsInputDisp" class="settings_container disabled">
            <textarea id="errDiffsMatrixInput" placeholder="2D matrix only"></textarea>
            <input id="errDiffsDivisionInput" type="number" />
            <div class="settings_checkbox-label">
              <input type="checkbox" id="errDiffsAutoDiv" checked="" />
              <label for="errDiffsAutoDiv">Auto</label>
            </div>
          </div>
          <div id="errLvlsDisp" class="settings_container disabled">
            <div class="settings_label-slider-input" style="background-color: #ff0000">
              <span>Red Diffuse</span>
              <input type="range" id="rErrLvlsRange" min="0" max="1" step="0.00000000001" />
              <input type="number" id="rErrLvlsInput" value="1" />
            </div>
            <div class="settings_label-slider-input" style="background-color: #00ff00">
              <span>Green Diffuse</span>
              <input type="range" id="gErrLvlsRange" min="0" max="1" step="0.00000000001" />
              <input type="number" id="gErrLvlsInput" value="1" />
            </div>
            <div class="settings_label-slider-input" style="background-color: #0000ff">
              <span>Blue Diffuse</span>
              <input type="range" id="bErrLvlsRange" min="0" max="1" step="0.00000000001" />
              <input type="number" id="bErrLvlsInput" value="1" />
            </div>
          </div>
          <div class="whitehr"></div>
          <div class="settings_label-select">
            <span data-text="$var_err_diffs"></span>
            <select id="varErrDiffs" class="disabled">
              <option value="ostromoukhov">Ostromoukhov</option>
              <option value="zhouFang">ZhouFang</option>
            </select>
          </div>
          <div id="varErrDiffsInputDisp" class="settings_container disabled">
            <textarea id="varErrDiffsMatrixInput" placeholder="'3D' + 1 matrix"></textarea>
          </div>
          <div id="mirrorDisp" class="settings_checkbox-label disabled">
            <input type="checkbox" id="useMirror" checked="" />
            <label for="useMirror" data-text="$mirror"></label>
          </div>
          <div class="whitehr"></div>
          <div id="serpentineDisp" class="settings_checkbox-label disabled">
            <input type="checkbox" id="useSerpentine" />
            <label for="useSerpentine" data-text="$serpentine"></label>
          </div>
          <div id="bufferDisp" class="settings_checkbox-label-select disabled">
            <input type="checkbox" id="useBuffer" />
            <label for="useBuffer" data-text="$buffer"></label>
            <div id="bufferSelectDisp" class="disabled">
              <select id="buffer">
                <option value="Int8Array" data-text="$Int8Array"></option>
                <option value="Int16Array" data-text="$Int16Array"></option>
                <option value="Int32Array" data-text="$Int32Array"></option>
                <option value="Float16Array" data-text="$Float16Array"></option>
                <option value="Float32Array" selected="" data-text="$Float32Array"></option>
                <option value="Float64Array" data-text="$Float64Array"></option>
              </select>
            </div>
          </div>
          <div class="whitehr"></div>
          <div id="lvlsDisp" class="settings_container disabled">
            <div class="settings_label-slider-input" style="background-color: #ff0000">
              <span></span>
              <input type="range" id="rLvlsRange" min="2" max="255" step="0.00000000001" />
              <input type="number" id="rLvlsInput" value="2" />
            </div>
            <div class="settings_label-slider-input" style="background-color: #00ff00">
              <span></span>
              <input type="range" id="gLvlsRange" min="2" max="255" step="0.00000000001" />
              <input type="number" id="gLvlsInput" value="2" />
            </div>
            <div class="settings_label-slider-input" style="background-color: #0000ff">
              <span></span>
              <input type="range" id="bLvlsRange" min="2" max="255" step="0.00000000001" />
              <input type="number" id="bLvlsInput" value="2" />
            </div>
          </div>
          <div id="linearDisp" class="settings_checkbox-label">
            <input type="checkbox" id="useLinear" title="Linear color space" />
            <label for="useLinear" data-text="$linear"></label>
          </div>
          <div class="settings_checkbox-label">
            <input type="checkbox" id="useDBS" />
            <label for="checkbox">Direct Binary Search</label>
          </div>
          <div class="settings_label-input">
            <span>Iterations</span>
            <input type="number" id="DBSIterations" value="1" />
          </div>
          <div class="whitehr"></div>
          <div class="settings_container">
            <h2>Canvas</h2>
            <div class="settings_label-input">
              <span>Width</span>
              <input type="number" id="canvasWidth" placeholder="480" value="480" />
            </div>
            <div class="settings_label-input">
              <span>Height</span>
              <input type="number" id="canvasHeight" placeholder="480" value="270" />
            </div>
            <button onclick="changeCanvasSize()" data-text="$change_canvas_size"></button>
            <div class="settings_checkbox-label">
              <input
                type="checkbox"
                id="canvasRendering"
                checked=""
                oninput="gId('canvas').style.imageRendering=canvasRendering.checked?'pixelated':'normal'" />
              <label for="canvasRendering">Pixelated Rendering</label>
            </div>
            <div class="settings_checkbox-label">
              <input type="checkbox" id="desyncOpt" />
              <span>Canvas Desynchronize</span>
            </div>
            <button id="saveImage">Save Image</button>
          </div>
        </div>
      </div>
      <div class="previewContainer">
        <div class="mainImage" style="border: 2px solid #ea7010">
          <img id="image" src="test_small.png" crossorigin="anonymous" data-text="$elN_A" />
        </div>
        <div class="firehr"></div>
        <div class="mainCanvas">
          <canvas id="canvas" width="512" height="768" data-text="$elN_A"></canvas>
        </div>
        <button onclick="process()" style="width: 100%" data-text="$dither"></button>
      </div>
    </div>
    <div class="border-style-solid" style="border-width: 2px; border-color: #1070ea">
      <div id="console"></div>
    </div>
    <div class="firehr"></div>
  </body>
  <script src="scripts/init.js"></script>
  <script src="scripts/generator.js"></script>
  <script src="scripts/dither.js"></script>

  <!--Resources-->
  <script src="scripts/resources/varErrDiffsRsrc-base.js"></script>
  <script src="scripts/resources/varErrDiffsRsrc-ostromoukhov.js"></script>
  <script src="scripts/resources/varErrDiffsRsrc-zhouFang.js"></script>

  <!--Libraries-->
  <script src="scripts/lib/901D3/blue-noise-utils.js"></script>
  <script src="scripts/lib/901D3/blue-noise-float64.js"></script>

  <script src="scripts/locale.js"></script>
  <script src="scripts/sizing.js"></script>
  <script src="scripts/misc.js"></script>
  <script src="scripts/process.js"></script>
  <script>
    const width = window.innerWidth;
    const height = window.innerHeight;

    document.getElementById("mobileNote").hidden = true;
    if (width < height) document.getElementById("mobileNote").hidden = false;

    gId("uploadFile").addEventListener("change", function (event) {
      const file = event.target.files[0];
      if (file) {
        const imageURL = URL.createObjectURL(file);
        image.src = imageURL;
        printLog("Image src: " + imageURL);

        image.onload = () => {
          gId("canvasWidth").placeholder = image.width;
          gId("canvasHeight").placeholder = image.height;
          if (image.width > 1920 || image.height > 1080) {
            canvas.width = 480;
            canvas.height = 270;
            canvasWidth = 480;
            canvasHeight = 270;
          } else {
            canvas.width = image.width;
            canvas.height = image.height;
            canvasWidth = canvas.width;
            canvasHeight = canvas.height;
          }
          errDiffsBuffer = bufferChange(canvasWidth, canvasHeight);
          process();
        };
      }
    });

    gId("uploadDitherImage").addEventListener("change", function (event) {
      const file = event.target.files[0];
      if (file) {
        const ditherImage = new Image();
        const ditherImageCanvas = document.createElement("canvas");
        const ditherImageCtx = ditherImageCanvas.getContext("2d");

        const imageURL = URL.createObjectURL(file);
        ditherImage.src = imageURL;

        ditherImage.onload = () => {
          ditherImageCanvas.width = ditherImage.width;
          ditherImageCanvas.height = ditherImage.height;

          ditherImageCtx.drawImage(ditherImage, 0, 0);

          const frame = ditherImageCtx.getImageData(
            0,
            0,
            ditherImageCanvas.width,
            ditherImageCanvas.height
          );
          const imageData = frame.data;

          const highest = findHighest(imageData);

          matrixInput = [];
          for (let y = 0; y < ditherImageCanvas.height; y++) {
            const yOffs = y * ditherImageCanvas.height;
            if (!matrixInput[y]) matrixInput[y] = [];

            for (let x = 0; x < ditherImageCanvas.width; x++) {
              matrixInput[y][x] = imageData[(yOffs + x) << 2];
            }
          }

          gId("matrixInput").value = formatNestedArray(matrixInput);
          gId("divisionInput").value = highest + 1;
          divisionInput = highest + 1;
          matrixInputLUTCreate();
        };
      }
    });

    document.addEventListener("keydown", function (event) {
      var activeElement = document.activeElement.tagName.toLowerCase();
      if (event.code === "KeyR" && activeElement !== "input" && activeElement !== "textarea") {
        process();
      } else if (event.code === "KeyF" && activeElement !== "input" && activeElement !== "textarea") fullscreenCanvas();
    });
  </script>
</html>