| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>DeviceMotionEvent: A device in free-fall, with the screen horizontal and upmost</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="author' title='Mosquito FP7"> |
| <link rel="reviewer author" title="Zhiqiang Zhang" href="mailto:zhiqiang.zhang@intel.com"> <!-- 2013-10-14 --> |
| </head> |
| <body> |
| <p>Free fall the device to run the test, with the screen horizontal and upmost.</p> |
| <div id="log"></div> |
| <script> |
| var t = async_test(); |
| var run = false; |
| |
| /* |
| * A device in free-fall, with the screen horizontal and upmost, |
| * has an accelerationIncludingGravity of zero and |
| * the following value for acceleration: |
| * { |
| * x: 0, |
| * y: 0, |
| * z: -9.81 |
| * }; |
| */ |
| window.addEventListener("devicemotion", function(e) { |
| if (!run) { |
| run = true; |
| t.step(function() { |
| var gvt = e.accelerationIncludingGravity; |
| var acc = e.acceleration; |
| |
| assert_approx_equals(gvt.x, 0, 1); |
| assert_approx_equals(gvt.y, 0, 1); |
| assert_approx_equals(gvt.z, 0, 1); |
| |
| assert_approx_equals(acc.x, 0, 1); |
| assert_approx_equals(acc.y, 0, 1); |
| assert_approx_equals(acc.z, -9.81, 1.5); |
| }); |
| t.done(); |
| } |
| }, false); |
| </script> |
| </body> |
| </html> |
| |