leadedge/lefileinput.html at main · DART-Edge-AI/leadedge · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Lead Edge Maze</title>
    <style>
        body {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding-top: 50px;
            margin: 0;
            height: 100vh;
            background-color: indigo;
        }
        #mazeCanvas {
            margin-top: 20px;
        }
        button {
            margin: 10px;
            padding: 10px 20px;
            background-color: deepskyblue;
            color: white;
            border: none;
            cursor: pointer;
            border-radius: 5px;
            font-weight: bold;
            box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
        }
        .developer-comments {
            font-size: 9px;
            color: white;
            text-align: left;
            max-width: 800px;
            font-weight: bold;
        }
        button, select {
            margin: 10px;
            padding: 10px 20px;
            background-color: deepskyblue;
            color: white;
            border: none;
            cursor: pointer;
            border-radius: 5px;
            font-weight: bold;
            box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
        }
        #threejs-canvas {
            width: 875px;
            height: 875px;
        }
    </style>
</head>
<body>
    <input type="file" id="imageInput" accept="image/png">
    <canvas id="mazeCanvas" width="875" height="875"></canvas>

    <div style="display: flex; justify-content: center; gap: 20px; margin-top: 20px;">
        <button onclick="generateMaze()">Generate Lead Edge Maze</button>
        <select id="sizeSelect">
            <option value="10">Small (10)</option>
            <option value="30">Medium (30)</option>
            <option value="70">Large (70)</option>
        </select>
        <button onclick="exportPNG()">Export as PNG</button>
        <button onclick="exportGLB()">Export 3D Maze as GLB</button>
        <button onclick="toggleResolution()">Toggle 4K</button>
        <button onclick="toggleSphereView()">Toggle Sphere View</button>
    </div>

    <div id="threejs-canvas"></div>

    <script src="https://cdn.jsdelivr.net/npm/three@0.137.5/build/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.137.5/examples/js/controls/OrbitControls.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/three@0.137.5/examples/js/exporters/GLTFExporter.js"></script>
    <script>
        const canvas = document.getElementById('mazeCanvas');
        const ctx = canvas.getContext('2d');
        let unit = 10; // Default to small
        let mazeSize = 875; // Default resolution
        let is4K = false; // Track whether 4K resolution is enabled
        let mazeData = []; // Store maze data for 3D rendering
        let scene, camera, renderer, controls;
        let isSphereView = false; // Track whether sphere view is enabled
        let imageMask = null; // Store image mask

        document.getElementById('imageInput').addEventListener('change', function(event) {
            const file = event.target.files[0];
            const reader = new FileReader();
            reader.onload = function(e) {
                const img = new Image();
                img.onload = function() {
                    const tempCanvas = document.createElement('canvas');
                    tempCanvas.width = img.width;
                    tempCanvas.height = img.height;
                    const tempCtx = tempCanvas.getContext('2d');
                    tempCtx.drawImage(img, 0, 0);
                    imageMask = tempCtx.getImageData(0, 0, img.width, img.height);
                    generateMaze(); // Generate maze using the new image mask
                };
                img.src = e.target.result;
            };
            reader.readAsDataURL(file);
        });

        document.getElementById('sizeSelect').addEventListener('change', function() {
            unit = parseInt(this.value);
            generateMaze(); // Regenerate the maze when size changes
        });

        function toggleResolution() {
            is4K = !is4K;
            mazeSize = is4K ? 4096 : 875; // Toggle between 4K and default resolution
            generateMaze(); // Regenerate the maze with the new resolution
        }

        function toggleSphereView() {
            isSphereView = !isSphereView;
            render3DMaze(); // Re-render the maze with the new view
        }

        function generateMaze() {
            canvas.width = mazeSize; // Ensure the canvas is set to the correct size
            canvas.height = mazeSize; // Ensure the canvas is set to the correct size
            ctx.clearRect(0, 0, mazeSize, mazeSize);
            ctx.fillStyle = 'rgba(255, 255, 255, 0)';
            ctx.fillRect(0, 0, mazeSize, mazeSize);

            let current = { x: mazeSize / 2, y: mazeSize / 2 }; // Central starting point
            let stack = [current];
            let visited = new Set([posKey(current)]);
            let lastDirection = null;
            mazeData = []; // Reset maze data

            while (stack.length > 0) {
                let next = getNextStep(current, lastDirection, visited);
                if (next) {
                    drawLine(current.x, current.y, next.x, next.y);
                    mazeData.push({ x1: current.x, y1: current.y, x2: next.x, y2: next.y });
                    visited.add(posKey(next));
                    stack.push(next);
                    lastDirection = direction(current, next);
                    current = next;
                } else {
                    current = stack.pop();
                    lastDirection = null; // Reset direction after backtracking
                }
            }
            createOpenings();
            render3DMaze();
        }

        function createOpenings() {
            ctx.clearRect(0, 0, unit, unit); // Top-left corner
            ctx.clearRect(mazeSize - unit, mazeSize - unit, unit, unit); // Bottom-right corner
        }

        function getNextStep(current, lastDirection, visited) {
            let directions = ['up', 'right', 'down', 'left'];
            if (lastDirection) {
                directions = directions.filter(dir => dir !== oppositeDirection(lastDirection));
            }
            while (directions.length > 0) {
                let dirIndex = Math.floor(Math.random() * directions.length);
                let dir = directions[dirIndex];
                let next = move(current, dir);
                if (!visited.has(posKey(next)) && isInBounds(next) && isPath(next)) {
                    return next;
                }
                directions.splice(dirIndex, 1); // Remove direction and try another
            }
            return null; // No unvisited neighbors
        }

        function move(pos, direction) {
            switch (direction) {
                case 'up': return { x: pos.x, y: pos.y - unit };
                case 'right': return { x: pos.x + unit, y: pos.y };
                case 'down': return { x: pos.x, y: pos.y + unit };
                case 'left': return { x: pos.x - unit, y: pos.y };
            }
        }

        function direction(from, to) {
            if (from.x === to.x) {
                return (from.y > to.y) ? 'up' : 'down';
            } else {
                return (from.x < to.x) ? 'right' : 'left';
            }
        }

        function oppositeDirection(dir) {
            switch (dir) {
                case 'up': return 'down';
                case 'right': return 'left';
                case 'down': return 'up';
                case 'left': return 'right';
            }
        }

        function isInBounds(pos) {
            return pos.x >= 0 && pos.x <= mazeSize && pos.y >= 0 && pos.y <= mazeSize;
        }

        function isPath(pos) {
            if (!imageMask) return true; // No mask, allow all positions
            const { width, height, data } = imageMask;
            const x = Math.floor(pos.x * (width / mazeSize));
            const y = Math.floor(pos.y * (height / mazeSize));
            const index = (y * width + x) * 4; // RGBA index
            const [r, g, b] = [data[index], data[index + 1], data[index + 2]];
const brightness = (r + g + b) / 3;
return brightness < 200; // Allow only dark areas (adjust threshold as needed)
}

function drawLine(x1, y1, x2, y2) {
  const dx = Math.abs(x2 - x1);
  const dy = Math.abs(y2 - y1);
  if (dx + dy === unit) { // Ensure line length is 1 unit
    ctx.beginPath();
    ctx.moveTo(x1, y1);
    ctx.lineTo(x2, x2);
    ctx.strokeStyle = '#FFF';
    ctx.lineWidth = 2;
    ctx.stroke();
  }
}

function posKey(pos) {
  return `${pos.x}:${pos.y}`;
}

function exportPNG() {
  const dataURL = canvas.toDataURL("image/png");
  const a = document.createElement('a');
  a.href = dataURL;
  a.download = 'LeadEdgeMaze.png';
  document.body.appendChild(a);
  a.click();
  document.body.removeChild(a);
}

function render3DMaze() {
  if (scene) {
    // Remove the previous objects from the scene
    while (scene.children.length > 0) {
      scene.remove(scene.children[0]);
    }
  } else {
    // Initialize Three.js components
    scene = new THREE.Scene();
    camera = new THREE.PerspectiveCamera(60, 1, 0.01, 100000);
    camera.position.set(0, mazeSize, mazeSize); // Adjust the camera position to be above the maze
    camera.lookAt(0, 0, 0); // Point the camera towards the center of the maze
    renderer = new THREE.WebGLRenderer({ alpha: true }); // transparent background
    renderer.setSize(875, 875); // Set renderer size to 875x875 pixels
    renderer.domElement.id = "threejs-canvas"; // Add ID to the canvas
    document.getElementById('threejs-canvas').appendChild(renderer.domElement);

    // Add orbit controls
    controls = new THREE.OrbitControls(camera, renderer.domElement);
    controls.enableDamping = true;
    controls.dampingFactor = 0.25;
    controls.enableZoom = true;

    // Render loop
    function animate() {
      requestAnimationFrame(animate);
      controls.update();
      renderer.render(scene, camera);
    }
    animate();

    // Handle window resize
    window.addEventListener('resize', function() {
      renderer.setSize(875, 875); // Fix size to 875x875 pixels
      camera.aspect = 1; // Aspect ratio is 1:1 for 875x875 pixels
      camera.updateProjectionMatrix();
    });
  }

  if (isSphereView) {
    renderMazeOnSphere();
  } else {
    renderMazeOnPlane();
  }
}

function renderMazeOnPlane() {
  // Draw the maze as 3D extruded lines (thin boxes)
  const material = new THREE.MeshBasicMaterial({ color: 0xffffff });
  mazeData.forEach(segment => {
    const dx = segment.x2 - segment.x1;
    const dy = segment.y2 - segment.y1;
    const length = Math.sqrt(dx * dx + dy * dy);
    const geometry = new THREE.BoxGeometry(length, 1, 1); // Length, height, width
    const line = new THREE.Mesh(geometry, material);
    line.position.set(
      (segment.x1 + segment.x2) / 2 - mazeSize / 2,
      (segment.y1 + segment.y2) / 2 - mazeSize / 2,
      0
    );
    if (dx === 0) {
      line.rotation.z = Math.PI / 2;
    }
    scene.add(line);
  });
}

function renderMazeOnSphere() {
  const radius = mazeSize / 2; // Radius of the sphere
  const material = new THREE.LineBasicMaterial({ color: 0xffffff });

  mazeData.forEach(segment => {
    const geometry = createNURBSLineGeometry(
      segment.x1 - mazeSize / 2,
      segment.y1 - mazeSize / 2,
      segment.x2 - mazeSize / 2,
      segment.y2 - mazeSize / 2,
      radius
    );
    const line = new THREE.Line(geometry, material);
    scene.add(line);
  });
}

function createNURBSLineGeometry(x1, y1, x2, y2, radius) {
  const points = [
                mapToSphere(x1, y1, radius),
                mapToSphere(x2, y2, radius)
            ];
  const nurbsCurve = new THREE.CatmullRomCurve3(points);
  const nurbsGeometry = new THREE.BufferGeometry().setFromPoints(nurbsCurve.getPoints(50));
  return nurbsGeometry;
}

function mapToSphere(x, y, radius) {
  const theta = (x / mazeSize) * Math.PI; // Longitude
  const phi = (y / mazeSize) * 2 * Math.PI; // Latitude
  const pos = new THREE.Vector3();
  pos.x = radius * Math.sin(phi) * Math.cos(theta);
  pos.y = radius * Math.sin(phi) * Math.sin(theta);
  pos.z = radius * Math.cos(phi);
  return pos;
}

function exportGLB() {
  const exporter = new THREE.GLTFExporter();
  exporter.parse(scene, function(result) {
    const blob = new Blob([result], { type: 'application/octet-stream' });
    const link = document.createElement('a');
    link.href = URL.createObjectURL(blob);
    link.download = is4K ? 'LeadEdgeMaze3D-4k.glb' : 'LeadEdgeMaze3D.glb';
    link.click();
  }, { binary: true });
}

// Initial maze and 3D maze generation
generateMaze();
</script> </body>   </html>