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<!DOCTYPE html> <html> <body> <h1>HTML5 Canvas clip()</h1> <canvas id="myCanvas" width="300" height="150" style="border:1px solid grey"> Sorry, your browser does not support canvas. </canvas> <script> const canvas = document.getElementById("myCanvas"); const ctx = canvas.getContext("2d"); // Create a triangle-shaped clipping region ctx.beginPath(); ctx.moveTo(100,20); ctx.lineTo(180,100); ctx.lineTo(20,100); ctx.lineTo(100,20); ctx.clip(); // Draw two rectangles ctx.fillStyle = "blue"; ctx.fillRect(0, 0, 300, 150); ctx.fillStyle = "red"; ctx.fillRect(0, 0, 90, 90); </script> </body> </html>
