double.html


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Complex Line Drawing</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background-color: #333;
        }
        canvas {
            border: 1px solid black;
            background-color: #333;
        }
    </style>
</head>
<body>
    <canvas id="complexLineCanvas" width="600" height="600"></canvas>
    <script>
        const canvas = document.getElementById('complexLineCanvas');
        const ctx = canvas.getContext('2d');
        const centerX = canvas.width / 2;
        const centerY = canvas.height / 2;
        const numLines = 160;

        // Function to draw the complex pattern
        function drawComplexPattern() {
            ctx.strokeStyle = '#ffffff';
            ctx.lineWidth = 0.5;
            for (let i = 0; i < numLines; i++) {
                const angle1 = (i / numLines) * 2 * Math.PI;
                const angle2 = ((i + 180) / numLines) * 2 * Math.PI;
                const x1 = centerX + 100 * Math.cos(angle1) * Math.sin(angle2);
                const y1 = centerY + 200 * Math.sin(angle1) * Math.sin(angle2);
                const x2 = centerX + 300 * Math.cos(angle2) * Math.sin(angle1);
                const y2 = centerY + 400 * Math.sin(angle2) * Math.sin(angle1);

                ctx.beginPath();
                ctx.moveTo(x1, y1);
                ctx.lineTo(x2, y2);
                ctx.stroke();
            }
        }

        drawComplexPattern();
    </script>
</body>
</html>