Distorted Android

// Show how to use the setMax, notifyWhenFinished / effectFinished APIs

   private float mBmpRatio;

      mTexture = new DistortedTexture();

      mScreen  = new DistortedScreen();

      mRnd     = new Random(0);

      mScale   = new Static3D(1,1,1);

      mEffects = new DistortedEffects();

      mEffects.apply(new MatrixEffectScale(mScale));

      for(int i=0; i<NUM_CONCURRENT_BUBBLES; i++)

        {

        VertexEffectDistort newEffect = createNewBubble();

        if( !mEffects.apply(newEffect) )

          {

          android.util.Log.e("listener", "failed to add bubble - this should never happen!");

          }

        }

   private VertexEffectDistort createNewBubble()

      float radius =  0.10f + 0.70f*mRnd.nextFloat() ; // pop up a bubble of size (radius,height)

      float height = -0.10f + 0.20f*mRnd.nextFloat() ; //

      float pointx =  0.80f * (mRnd.nextFloat()-0.5f); // at a random place on the bitmap (but not near the edge)

      float pointy =  0.80f * (mRnd.nextFloat()-0.5f); //

      int duration =   1000 + mRnd.nextInt(3000);      // for anytime from 1 to 4 seconds

      // '1.0f' i.e. from (0,0,0) to (0,0,height) and back to (0,0,0) - full circle.

      Static3D center = new Static3D(pointx,pointy,0);

      Static4D region = new Static4D(0,0,0,radius);

      VertexEffectDistort distort = new VertexEffectDistort(dDistort,center,region);

      // We want to know when this effect finishes so that we can add a new one.

      return distort;

// An effect just finished, i.e. its Dynamic 'dDistort' reached its end point.

// The ID of the finished effect is 'effectID' but here we know it must be one of the Distorts

// and we don't care which one it is - just remove the finished effect from the Effect queues and

// add a new one right back in.

     VertexEffectDistort newEffect = createNewBubble();

     if( !mEffects.apply(newEffect) )

   public void onDrawFrame(GL10 glUnused)

     float min= width>height ? height : width;

     mScale.set( min, min*mBmpRatio, min );

     mBmpRatio = (float)bitmap.getHeight()/bitmap.getWidth();

     if( mMesh==null ) mMesh = new MeshRectangles(50, (int)(50*mBmpRatio) );

     // Normally we can only hold no more than 5 (see EffectType.reset()) Vertex

     // effects at any given time. Here we want 12, so we need to increase the default.

     // We need to call this before we call onCreate; best done here.

     // After onCreate we can also call this but only to decrease this value!

     //

     // One more than we have bubbles at any given time because it can sometimes

     // happen that the old bubble is not yet removed when we add a new one.