| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> |
| <html lang="en" xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <title>CSS Test: CSS background position: animated</title> |
| <link rel="author" title="Ian Hickson" href="mailto:ian@hixie.ch"/> |
| <link rel="alternate" href="http://www.hixie.ch/tests/adhoc/css/background/position/001.html" type="text/html"/> |
| <link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background"/> |
| <meta content="dom animated" name="flags" /> |
| <style type="text/css"> |
| #test { |
| background: url(support/diamond.png) no-repeat; |
| background-position: 0% 100%; |
| position: relative; |
| height: 20em; width: 20em; |
| margin: 2em; |
| } |
| #ring { |
| position: absolute; left: 0; top: 20em; |
| margin: -20px 0 0 -20px; |
| } |
| #control { |
| border: blue solid; |
| width: 24em; |
| } |
| </style> |
| <script type="text/javascript"> |
| var position = 0; /* 0 .. 2*PI */ |
| function test() { |
| with (Math) { |
| position += PI / 1000; |
| if (position >= 2 * PI) { |
| position = 0; |
| } |
| document.styleSheets[0].cssRules[0].style.backgroundPosition = (sin(position) + 1) * 50 + '% ' + (cos(position) + 1) * 50 + '%'; |
| document.styleSheets[0].cssRules[1].style.left = (sin(position) + 1) * 10 + 'em'; |
| document.styleSheets[0].cssRules[1].style.top = (cos(position) + 1) * 10 + 'em'; |
| // document.getElementById('status').firstChild.data = document.styleSheets[0].cssRules[0].style.backgroundPosition; |
| } |
| } |
| </script> |
| </head> |
| <body onload="var query = location.search; if (query) { query = query.substring(1, query.length); } else { query = 10 } setInterval(test, query)"> |
| <p>There should be a circle with a diamond inside the blue box below. |
| The diamond and the orange circle should appear to be moving in |
| a circle, around a common center point. The radius of motion of the |
| diamond should be slightly shorter than that of the orange circle |
| (measuring the radius to the center of each shape), so that the |
| diamond is always near the side of the circle closer to the center |
| of motion.</p> |
| <div id="control"><div id="test"><img src="support/ring.png" alt="O" id="ring" /></div></div> |
| <!-- <p>Position: <span id="status">0% 0%</span></p> --> |
| |
| |
| </body> |
| </html> |
