Every object should have its own Matrix.
Then take the inverse of that Matrix and multiply it by the screen coordinate. The result will be a point that can be compared with the coordinates of the pre-transformed object. On Wednesday, January 16, 2013 3:07:21 PM UTC-6, strangeoptics wrote: > > Hi, > > I would like to draw some objects onto a canvas that are translated and > rotated. > When I tap on the screen I need to translate the screen coordinates into > the drawing space of the objects to find out if they are selected. > > What is the best way to accomplish this? > 1) Is there a 2D Scene Grap API available? > 2) Do I can store the Matrix for every Object and reverse it? The > canvas.getMatrix() method is deprecated! > 3) Is there another alternative? > > thx > > -- 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
