Advertise here




Advertise here

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In with Google Sign In with OpenID
Please do not post the same thing multiple times. The board software automatically flags certain posts as needing moderator attention. This happens the most often for new users. I'm pretty sure this is made clear at the time you attempt to post. Posting the same thing over and over again just makes that many more posts the moderators have to weed through later. This makes us sad. Don't make us sad. If your post/thread doesn't appear, just wait a while. Don't post it again. If it hasn't shown up by the next day, then you can try again. I normally go through posts in the mornings, and try to check a few times throughout the day, but I'm not here 24/7. There will typically be a significant delay before posts are approved. Just be patient.

Ball Animation in Landscape mode using uiaccelerometer

0 down vote favorite
share [fb] share [tw]


I'm animating a ball on the screen in portrait mode using uiaccelerometer.Its working fine, now I want the same to work in landscape mode.When i tried to use the same part of code(for portrait) in the landscape mode it gives me a weird result, seems to be completely wrong. I am breaking my head in to this. Any help will be appreciated.My code below for poratrit view.

(void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration {
// apply acceleration to velocity

NSTimeInterval elapsedTime = acceleration.timestamp - lastAccelTimestamp;
ballVelocityX = ballVelocityX + (acceleration.x * MAX_ACCEL_PER_SEC * elapsedTime);
ballVelocityY = ballVelocityY - (acceleration.y * MAX_ACCEL_PER_SEC * elapsedTime);

if (lastAccelTimestamp > 0) {
// recalc ball position
ballX += (ballVelocityX * elapsedTime); // ballX is CGFloat
ballY += (ballVelocityY * elapsedTime); // ballY is CGFloat
// update view
[ballView setCenter:CGPointMake(ballX, ballY)];
} lastAccelTimestamp = acceleration.timestamp;

}
Sign In or Register to comment.