android - Implement 2D rotation using multi touch -

in code implemented:

• zooming (with double tap , touble touch event)
• scrolling
• coordinate transformation pixel utm

using class matrix, proportions. in way coordinates correct.

i add rotation image, don't know how it. me?

this image activity:

public class mapactivity extends activity {  public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      touchimageview img = new touchimageview(this);     img.setimageresource(r.drawable.planimetria);     img.setmaxzoom(10f);     setcontentview(img); } 

this java file class:

http://pastebin.com/afukpgyz

thank help.