How to rotate a UIImageView To Face a location??

[programingkid]

Hi, im a begginer on iphone dev and im stuck on a problem
Does anyone know how to rotate a UIImageView to face a location???

Eg. if a touch location was X:100 Y:100, make the image rotate and face X:100 Y:100??

Thanx in Advance

[harrytheshark]

Are you stuck on actually coding the method, or do you not even have a method?

[programingkid]

Originally Posted by harrytheshark

Are you stuck on actually coding the method, or do you not even have a method?

i havent made the method yet, i dont know how i would make that work

[mgriffin]

Originally Posted by programingkid

i havent made the method yet, i dont know how i would make that work

You first need to know the angle (in radians) that you want to rotate the image by. This is done with atan2.

float angle = atan2(yAccel,xAccell);

You then transform the UIImageView:

imageView.transform = CGAffineTransformMakeRotation(angle);

HTH

[programingkid]

Originally Posted by mgriffin

You first need to know the angle (in radians) that you want to rotate the image by. This is done with atan2.



You then transform the UIImageView:



HTH

i tried this but doesn't totally work right. it rotates to the position but doesnt work a full 360 degrees

[Ice_2k]

I don't wanna be a jerk, but the man told you how to get the angle and then how to use that angle to rotate the image. You just copy/paste his code and then come back here and say it doesn't work all the way? Do some testing, debugging, don't ask for every little step to be fed to you.