Learn html - html tutorial - Rotate method in html5 canvas - html examples - html programs
- The rotate() is the method of HTML CANVAS
- The rotate() method is used to rotate the current diagram.
Syntax for rotate() Method in HTML5 Canvas:
context.rotate(angle);
Parameter values for rotate() Method in HTML5 Canvas:
| Parameter |
Description |
| angle |
The rotation angle, in radians. |
Sample Coding for rotate() Method in HTML5 Canvas:
Tryit<!DOCTYPE html>
<html>
<head>
<title>wikitechy-rotate() method in canvas</title>
</head>
<body>
<h2>wikitechy-rotate()method in canvas</h2>
<canvas id="wikitechyCanvas" width="300" height="150"
style="border:1px solid #d3d3d3;">
</canvas>
<script>
var canvas = document.getElementById("wikitechyCanvas");
var context = canvas.getContext("2d");
context.rotate(20 * Math.PI / 180);
context.fillRect(50, 20, 100, 50);
</script>
</body>
</html>
Code Explanation for rotate() Method in HTML5 Canvas:
- ”wikitechyCanvas” is used to define the id attribute value for canvas element.
- The getElementById(); method is used to get the element that has the id attributes value as “wikitechyCanvas”.
- canvas.getContext() method returns an object that provides methods and properties for drawing two dimension figure on the canvas
- The beginPath() method is used to begins the path for a line.
- mak.lineWidth is used to set a line width as 10.
- The context.rotate() method is used to rotate a diagram at (20 * Math.PI / 180) radiant.
- The context.fillRect() method is used to draw a "filled" rectangle. (50, 20, 100, 50);
Output for rotate() Method in HTML5 Canvas:
- <canvas> tag is used to draw the rectangle with blue color border.
- The output shows that a 20-degree rotated rectangle.
Browser Support for rotate() Method in HTML5 Canvas:
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