don't divide by two, multiply by .5 . multiplication is much faster than division.
On Mar 15, 5:38 pm, Nicholas Johnson <[email protected]> wrote: > A couple things: > > This might help your pivot point that you have: instead of converting to > float after the division, try doing it before the division. Like this: > ((float)mBitmap.getHeight())/2f -- I believe you are losing some accuracy > by doing it the other way around. As in (float)(7/2) would equal 3, not 3.5. > > Secondly, if you're end goal is to just draw a rotated image to the canvas > during the onDraw call (which I suspect that it is), then there's no reason > to create a second bitmap. Something like this should work: > > float px = ((float)mBitmap.getHeight())/2f; > float py = ((float)mBitmap.getWidth())/2f; > m.setRotate(mRotation, px, py); > canvas.drawBitmap(mBitmap, m, null); > > Also, if you're not doing anything funky with your paint (like ColorFilters, > etc.), then just leave it null. > > --Nick -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
