diff options
Diffstat (limited to 'basicsuite/sensors/Accelbubble.qml')
| -rw-r--r-- | basicsuite/sensors/Accelbubble.qml | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/basicsuite/sensors/Accelbubble.qml b/basicsuite/sensors/Accelbubble.qml index f70aa32..fa42770 100644 --- a/basicsuite/sensors/Accelbubble.qml +++ b/basicsuite/sensors/Accelbubble.qml @@ -49,9 +49,38 @@ Rectangle { property real velocityX: 0 property real velocityY: 0 + // Calculate effective rotation + function getRotation() { + var rot = rotation + var newParent = parent + + while (newParent) { + rot += newParent.rotation + newParent = newParent.parent + } + return rot%360 + } + function updatePosition() { - velocityX += accel.reading.y - velocityY += accel.reading.x + var actualRotation = getRotation(); + + // Transform accelerometer readings according + // to actual rotation of item + if (actualRotation == 0) { + velocityX -= accel.reading.x + velocityY += accel.reading.y + } else if (actualRotation == 90 || actualRotation == -270) { + velocityX += accel.reading.y + velocityY += accel.reading.x + } else if (actualRotation == 180 || actualRotation == -180) { + velocityX += accel.reading.x + velocityY -= accel.reading.y + } else if (actualRotation == 270 || actualRotation == -90) { + velocityX -= accel.reading.y + velocityY -= accel.reading.x + } else { + console.debug("The screen rotation of the device has to be a multiple of 90 degrees.") + } velocityX *= 0.95 velocityY *= 0.95 |