Canvas, animated text rotation - Javascript Canvas

Javascript examples for Canvas:Animation

  1. HOME
  2. Javascript
  3. Canvas
  4. Animation

Description

Canvas, animated text rotation

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
      <script type="text/javascript" src="https://code.jquery.com/jquery-1.9.1.js"></script> 
      <style id="compiled-css" type="text/css">

canvas {//from  w  ww. j a v  a  2s. c  om
   border:1px solid red;
}


      </style> 
      <script type="text/javascript">
    $(window).load(function(){
var canvasWidth;
var canvasHeight;
var interval = 350;
var angleInDegrees = 0;
function init() {
    canvas = document.getElementById("canvas");
    ctx = canvas.getContext('2d');
    canvasWidth = canvas.width;
    canvasHeight = canvas.height;
    setInterval(function () {
        redraw();
    }, interval);
}
init();
function redraw() {
    angleInDegrees += 5;
    ctx.clearRect(0, 0, canvasWidth, canvasHeight);
    ctx.beginPath();
    ctx.rect(200, 150, 5, 5);
    ctx.fill();
    ctx.save();
    ctx.translate(200, 150);
    ctx.rotate(angleInDegrees * Math.PI / 180);
    ctx.fillStyle = '#f00';
    ctx.font = '40px san-serif';
    ctx.textBaseline = 'top';
    ctx.fillText("Hello rotated", 0, 0);
    ctx.restore();
    ctx.fillStyle = '#f00';
    ctx.font = '40px san-serif';
    ctx.textBaseline = 'top';
    ctx.fillText("Hello still", 0, 0);
}
    });

      </script> 
   </head> 
   <body> 
      <canvas id="canvas" width="500" height="300"></canvas>  
   </body>
</html>

Related Tutorials