texture/index.html at main · krlmnz/texture · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Pattern to Weaving Grid</title>
    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
    <style>
        html, body {
            width: 100%;
            font-family: Geneva, Tahoma, sans-serif;
            background: #F5F7F8;
            margin: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .container {
            width: 90%;
            max-width: 800px;
            margin-top: 20px;
        }

        .grid-container {
            display: grid;
            gap: 1px;
            margin-top: 20px;
            max-width: 512px;
            overflow: auto;
        }

        .cell {
            background-color: #fff;
            border: 1px solid #ddd;
        }

        #canvas-container {
            display: none;
        }

        .info {
            margin-top: 20px;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Pattern to Weaving Grid</h1>
        <input type="file" id="imageUpload" accept="image/*" class="form-control mb-3">
        <div id="dropArea" class="border p-3 text-center">
            Drag & Drop Image Here
        </div>
        <button id="downloadPNG" class="btn btn-primary mt-3">Download PNG</button>
        <button id="downloadSVG" class="btn btn-secondary mt-3">Download SVG</button>
        <button id="copySVG" class="btn btn-secondary mt-3">Copy SVG to Clipboard</button>
        <div id="gridContainer" class="grid-container"></div>
        <div class="info" id="infoContainer"></div>
    </div>
    <div id="canvas-container">
        <canvas id="canvas"></canvas>
    </div>

    <script>
        const imageUpload = document.getElementById('imageUpload');
        const dropArea = document.getElementById('dropArea');
        const gridContainer = document.getElementById('gridContainer');
        const infoContainer = document.getElementById('infoContainer');
        const canvas = document.getElementById('canvas');
        const ctx = canvas.getContext('2d');
        const downloadPNG = document.getElementById('downloadPNG');
        const downloadSVG = document.getElementById('downloadSVG');
        const copySVG = document.getElementById('copySVG');

        imageUpload.addEventListener('change', handleImageUpload);
        dropArea.addEventListener('dragover', handleDragOver);
        dropArea.addEventListener('drop', handleDrop);

        function handleImageUpload(event) {
            const file = event.target.files[0];
            processImage(file);
        }

        function handleDragOver(event) {
            event.preventDefault();
        }

        function handleDrop(event) {
            event.preventDefault();
            const file = event.dataTransfer.files[0];
            processImage(file);
        }

        function processImage(file) {
            const reader = new FileReader();
            reader.onload = function(e) {
                const img = new Image();
                img.onload = function() {
                    const [croppedImage, width, height] = cropAndScaleImage(img);
                    createGrid(croppedImage, width, height);
                    displayInfo(width, height);
                };
                img.src = e.target.result;
            };
            reader.readAsDataURL(file);
        }

        function cropAndScaleImage(img) {
            const canvas = document.createElement('canvas');
            const ctx = canvas.getContext('2d');
            canvas.width = img.width;
            canvas.height = img.height;
            ctx.drawImage(img, 0, 0, img.width, img.height);

            const imageData = ctx.getImageData(0, 0, img.width, img.height).data;
            let minX = img.width, minY = img.height, maxX = 0, maxY = 0;

            for (let y = 0; y < img.height; y++) {
                for (let x = 0; x < img.width; x++) {
                    const index = (y * img.width + x) * 4;
                    const brightness = (imageData[index] + imageData[index + 1] + imageData[index + 2]) / 3;
                    if (brightness < 128) {
                        if (x < minX) minX = x;
                        if (x > maxX) maxX = x;
                        if (y < minY) minY = y;
                        if (y > maxY) maxY = y;
                    }
                }
            }

            const croppedWidth = maxX - minX + 1;
            const croppedHeight = maxY - minY + 1;

            const maxDimension = Math.max(croppedWidth, croppedHeight);
            const scaleFactor = maxDimension > 48 ? 48 / maxDimension : 1;

            const scaledWidth = Math.floor(croppedWidth * scaleFactor);
            const scaledHeight = Math.floor(croppedHeight * scaleFactor);

            canvas.width = scaledWidth;
            canvas.height = scaledHeight;
            ctx.drawImage(img, minX, minY, croppedWidth, croppedHeight, 0, 0, scaledWidth, scaledHeight);

            return [ctx.getImageData(0, 0, scaledWidth, scaledHeight).data, scaledWidth, scaledHeight];
        }

        function createGrid(imageData, width, height) {
            gridContainer.innerHTML = ''; // Clear previous grid

            // Calculate cell size ensuring maximum width of 512px
            const maxGridWidth = 512;
            const cellSize = Math.min(maxGridWidth / width, maxGridWidth / height);

            gridContainer.style.gridTemplateColumns = `repeat(${width}, ${cellSize}px)`;
            gridContainer.style.gridTemplateRows = `repeat(${height}, ${cellSize}px)`;

            for (let i = 0; i < width * height; i++) {
                const r = imageData[i * 4];
                const g = imageData[i * 4 + 1];
                const b = imageData[i * 4 + 2];
                const cell = document.createElement('div');
                cell.classList.add('cell');
                cell.style.width = `${cellSize}px`;
                cell.style.height = `${cellSize}px`;
                cell.style.backgroundColor = `rgb(${r}, ${g}, ${b})`; // Set the cell color
                gridContainer.appendChild(cell);
            }
        }

        function displayInfo(width, height) {
            infoContainer.innerHTML = `
                <p>Grid Size: ${width} x ${height}</p>
                <p>Aspect Ratio: ${(width / height).toFixed(2)}</p>
            `;
        }

        downloadPNG.addEventListener('click', () => {
            const width = parseInt(gridContainer.style.gridTemplateColumns.split(' ').length);
            const height = parseInt(gridContainer.style.gridTemplateRows.split(' ').length);
            canvas.width = width * 20;
            canvas.height = height * 20;
            ctx.clearRect(0, 0, canvas.width, canvas.height);

            const cells = gridContainer.querySelectorAll('.cell');
            cells.forEach((cell, index) => {
                const x = (index % width) * 20;
                const y = Math.floor(index / width) * 20;
                ctx.fillStyle = cell.style.backgroundColor;
                ctx.fillRect(x, y, 20, 20);
            });

            const link = document.createElement('a');
            link.download = 'pattern.png';
            link.href = canvas.toDataURL();
            link.click();
        });

        downloadSVG.addEventListener('click', () => {
            const svg = createSVG();
            const blob = new Blob([svg], { type: 'image/svg+xml' });
            const url = URL.createObjectURL(blob);
            const link = document.createElement('a');
            link.download = 'pattern.svg';
            link.href = url;
            link.click();
        });

        copySVG.addEventListener('click', () => {
            const svg = createSVG();
            navigator.clipboard.writeText(svg).then(() => {
                alert('SVG copied to clipboard');
            }).catch(err => {
                console.error('Failed to copy SVG: ', err);
            });
        });

        function createSVG() {
            const width = parseInt(gridContainer.style.gridTemplateColumns.split(' ').length);
            const height = parseInt(gridContainer.style.gridTemplateRows.split(' ').length);
            let svgContent = `<svg width="${width * 20}" height="${height * 20}" xmlns="http://www.w3.org/2000/svg">`;
            const cells = gridContainer.querySelectorAll('.cell');
            cells.forEach((cell, index) => {
                const x = (index % width) * 20;
                const y = Math.floor(index / width) * 20;
                const color = cell.style.backgroundColor;
                svgContent += `<rect x="${x}" y="${y}" width="20" height="20" fill="${color}" stroke="black" stroke-width="0.1"/>`;
            });
            svgContent += `</svg>`;
            return svgContent;
        }
    </script>
</body>
</html>