Computer-Graphics-Lab-Solution/DDA.html at main · Its-Shojib/Computer-Graphics-Lab-Solution · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>DDA Line Drawing Algorithm</title>
    <style>
        canvas {
            border: 1px solid black;
            margin-top: 10px;
        }
    </style>
</head>
<body>
    <canvas id="canvas"></canvas>
    <script>
        window.onload = function() {
            const canvas = document.getElementById('canvas');
            const ctx = canvas.getContext('2d');
            canvas.width = 800;
            canvas.height = 600;

            // Hardcoded start and end points
            const x1 = 50;  // Start X
            const y1 = 50;  // Start Y
            const x2 = 300; // End X
            const y2 = 300; // End Y


            ddaLine(ctx, x1, y1, x2, y2);

            function ddaLine(ctx, x1, y1, x2, y2) {
                const dx = x2 - x1;
                const dy = y2 - y1;
                const steps = Math.abs(dx) > Math.abs(dy) ? Math.abs(dx) : Math.abs(dy);
                const xIncrement = dx / steps;
                const yIncrement = dy / steps;

                let x = x1;
                let y = y1;

                ctx.beginPath();
                for (let i = 0; i <= steps; i++) {
                    ctx.rect(Math.round(x), Math.round(y), 1, 1);
                    console.log(`Point(${Math.round(x)}, ${Math.round(y)})`); // Log points to the console
                    x += xIncrement;
                    y += yIncrement;
                }
                ctx.fill();
            }
        };
    </script>
</body>
</html>