ConductScore Prototype // app.js - Basic staff drawing const canvas = document.getElementById('notation-canvas'); const ctx = canvas.getContext('2d'); // Set canvas resolution to match display size function resizeCanvas() {    const displayWidth = canvas.clientWidth;    const displayHeight = canvas.clientHeight;    canvas.width = displayWidth;    canvas.height = displayHeight; } resizeCanvas(); window.addEventListener('resize', resizeCanvas); // Draw a basic staff function drawStaff(x, y, width) {    const lineSpacing = 10;    ctx.beginPath();    for (let i = 0; i < 5; i++) {        const yPos = y + (i * lineSpacing);        ctx.moveTo(x, yPos);        ctx.lineTo(x + width, yPos);    }    ctx.strokeStyle = 'black';    ctx.lineWidth = 1;    ctx.stroke(); } // Draw initial staff drawStaff(50, 100, 700);

--> // Simple gesture detection let gestureStartX, gestureStartY; let gesturePoints = []; canvas.addEventListener('touchstart', function(e) {    e.preventDefault();    const touch = e.touches[0];    const rect = canvas.getBoundingClientRect();    gestureStartX = touch.clientX - rect.left;    gestureStartY = touch.clientY - rect.top;        // Reset gesture points collection    gesturePoints = [{x: gestureStartX, y: gestureStartY, time: Date.now()}]; }); canvas.addEventListener('touchmove', function(e) {    e.preventDefault();    const touch = e.touches[0];    const rect = canvas.getBoundingClientRect();    const currentX = touch.clientX - rect.left;    const currentY = touch.clientY - rect.top;        // Add point to gesture collection    gesturePoints.push({x: currentX, y: currentY, time: Date.now()});        // Draw the gesture path    ctx.beginPath();    ctx.moveTo(gesturePoints[gesturePoints.length-2].x, gesturePoints[gesturePoints.length-2].y);    ctx.lineTo(currentX, currentY);    ctx.strokeStyle = 'blue';    ctx.lineWidth = 2;    ctx.stroke(); }); canvas.addEventListener('touchend', function(e) {    // Analyze the gesture    const gestureType = analyzeGesture(gesturePoints);    console.log(`Detected gesture: ${gestureType}`);        // Clean up after gesture analysis    setTimeout(() => {        // Clear the canvas and redraw notation        ctx.clearRect(0, 0, canvas.width, canvas.height);        drawMusicNotation();    }, 500); }); // Simple gesture analyzer function analyzeGesture(points) {    if (points.length < 3) return "tap";        // Calculate horizontal and vertical movement    const xStart = points[0].x;    const yStart = points[0].y;    const xEnd = points[points.length-1].x;    const yEnd = points[points.length-1].y;        const xDiff = Math.abs(xEnd - xStart);    const yDiff = Math.abs(yEnd - yStart);        // Simple horizontal swipe detection    if (xDiff > 100 && yDiff < 50) {        return xEnd > xStart ? "swipe-right" : "swipe-left";    }        // Simple vertical swipe detection    if (yDiff > 100 && xDiff < 50) {        return yEnd > yStart ? "swipe-down" : "swipe-up";    }        // Circle detection (very simple approximation)    if (xDiff < 50 && yDiff < 50 && points.length > 20) {        return "circle";    }        return "unknown"; }