Distorted Android

package org.distortedandroid.examples.deform;

import android.content.Context;

import android.opengl.GLSurfaceView;

import android.os.Build;

import android.util.AttributeSet;

import android.view.MotionEvent;

///////////////////////////////////////////////////////////////////////////////////////////////////

class DeformSurfaceView extends GLSurfaceView 

{

    private DeformRenderer renderer;

    private int xTouch, yTouch;

///////////////////////////////////////////////////////////////////////////////////////////////////

    public DeformSurfaceView(Context c, AttributeSet attrs) 

      {

      super(c, attrs);

      if(!isInEditMode())

        {

        setEGLContextClientVersion(2);

        if( Build.FINGERPRINT.startsWith("generic") )

          { 

          setEGLConfigChooser(8, 8, 8, 8, 16, 0);   

          }

        renderer = new DeformRenderer(this);

        setRenderer(renderer);

        }

      }

///////////////////////////////////////////////////////////////////////////////////////////////////

    @Override public boolean onTouchEvent(MotionEvent event) 

      {

      int action = event.getAction();

      int x = (int)event.getX();

      int y = (int)event.getY();

      switch(action)

         {

         case MotionEvent.ACTION_DOWN: xTouch =x;

                                       yTouch =y; 

                                       renderer.down(x,y);

                                       break;

         case MotionEvent.ACTION_MOVE: renderer.move(x-xTouch,y-yTouch);                      

                                       break;

         case MotionEvent.ACTION_UP  : renderer.up(); 

                                       break;

         }

      return true;

      }

}