protected void transformPath(Path path){
  path.transform(mMatrixValueToPx);
  path.transform(mMatrixTouch);
  path.transform(mMatrixOffset);
}

protected void transformPath ( Path path ) { path . transform ( mMatrixValueToPx ) ; path . transform ( mMatrixTouch ) ; path . transform ( mMatrixOffset ) ; }
transform a path with all the given matrices very important : keep order to value - touch - offset
