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HTML | canvas arcTo() Method
  • Last Updated : 25 Jul, 2019

The canvas arcTo() Method is used to create an arc/curve between two tangents on the canvas.This method defines an arc in the extension of a straight line or another figure. This method is generally used to create rounded corners.

Syntax:

context.arcTo( x1, y1, x2, y2, r );

Parameters:

  • x1: This parameter specifies the x-coordinate of the first tangent.
  • y1: This parameter specifies the y-coordinate of the first tangent.
  • x2: This parameter specifies the x-coordinate of the second tangent.
  • y2: This parameter specifies the y-coordinate of the second tangent.
  • r: This parameter specifies the radius of the arc.

Example 1:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML canvas arcTo() Method
    </title>
</head>
  
<body style="text-align:center;">
      
    <h1>GeeksforGeeks</h1>
      
    <h2>HTML canvas arcTo() Method</h2>
      
    <canvas id="GFG" width="500" height="200" >
    </canvas>
      
    <script>
        var doc_id = document.getElementById("GFG");
        var context = doc_id.getContext("2d");
        context.beginPath();
        context.strokeStyle = 'green';
        context.lineWidth = 6;
        context.moveTo(200, 30);
        context.arcTo(100, 30, 100, 50, 50);
        context.stroke();
    </script>
</body>
  
</html>

Output:



Example 2:




<!DOCTYPE html>
<html>
  
<head>
    <title>
        HTML canvas arcTo() Method
    </title>
</head>
  
<body style="text-align:center;">
      
    <h1>GeeksforGeeks</h1>
      
    <h2>HTML canvas arcTo() Method</h2>
      
    <canvas id="GFG" width="500" height="200" >
    </canvas>
      
    <script>
        var doc_id = document.getElementById("GFG");
        var context = doc_id.getContext("2d");
        context.beginPath();
        context.strokeStyle = 'green';
        context.lineWidth = 3;
        context.moveTo(60, 60);
        context.arcTo(250, 60, 250, 110, 50);
        context.stroke();
    </script>
</body>
  
</html>

Output:

Supported Browsers: The browser supported by HTML canvas arcTo() Method are listed below:

  • Google Chrome
  • Internet Explorer 9.0
  • Firefox
  • Safari
  • Opera



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