[android-developers] Re: Text in a circle that rotates on touch

2010-04-12 Thread Farha Ansari
Hi , I have the same requirement, I have to rotate an image of a wheel as the user moves finger on the wheel on screen. Can u pls tell me how I can use this code thr? What is cx, cy, mPreviousX, mPreviousY? Thanks On Mar 6, 2:56 am, Nathan nathan.d.mel...@gmail.com wrote: On Mar 5, 3:25 am,

[android-developers] Re: Text in a circle that rotates on touch

2010-03-06 Thread Bart
Thanks alot. I sort of had it working yesterday, but I think my math was a little off, which caused some strange behavior. So I will try your code. On 5 mrt, 22:56, Nathan nathan.d.mel...@gmail.com wrote: On Mar 5, 3:25 am, Bart bvandep...@gmail.com wrote: Hi, I'd like to display a given

[android-developers] Re: Text in a circle that rotates on touch

2010-03-06 Thread Bart
I tested it and it works like a charm :) I only had to change the -= in this.bearing -= Math.toDegrees(diff) to +=, otherwise the rotation was inverted. How do you do the rotation exactly? If I just draw the text onto the canvas in onDraw(Canvas canvas), and then call canvas.rotate, then nothing

[android-developers] Re: Text in a circle that rotates on touch

2010-03-06 Thread Nathan
I use canvas.rotate(-bearing) *before* drawing - after drawing won't work. I guess that accounts for the negative sign. Nathan On Mar 6, 7:21 am, Bart bvandep...@gmail.com wrote: I tested it and it works like a charm :) I only had to change the -= in this.bearing -= Math.toDegrees(diff) to

[android-developers] Re: Text in a circle that rotates on touch

2010-03-05 Thread skink
Bart wrote: Hi, I'd like to display a given String in a circle (so bend the string so that the end of the string touches the beginning of the string). And Then I'd like to let the user rotate the circle by grabbing and dragging it clockwise or counterclockwise. Do you guys know what would

[android-developers] Re: Text in a circle that rotates on touch

2010-03-05 Thread Twisted Ware
I'm doing something similar in my current app. It might not apply directly because I'm using GL for my drawing and don't have access to the same API calls. An important thing is to remember that the user is moving finger diagonally in some cases, so you need to calculate the angular velocity in

[android-developers] Re: Text in a circle that rotates on touch

2010-03-05 Thread Nathan
On Mar 5, 3:25 am, Bart bvandep...@gmail.com wrote: Hi, I'd like to display a given String in a circle (so bend the string so that the end of the string touches the beginning of the string). And Then I'd like to let the user rotate the circle by grabbing and dragging it clockwise or