Distorted Android

      // 1 cycle = 10000 ms = 10 seconds long

      int duration = 10000;

      // First abort all effect we might have had before

      // (we will if we got here from a brief stay in the background)

      mEffects.abortEffects(EffectTypes.MATRIX);

      // Now start applying the effects. Matrix effects are, like the name suggests, multiplications

      // of the Mesh by certain Projective Transformation Matrix. As such, those are - confusingly -

      // applied in exactly the opposite order than given, i.e. here the last SCALE would be the

      // first effect applied to each vertex of our Mesh, followed by a ROTATION, and only then by

      // the MOVE !

      // MOVES /////////

      // Now, after the SCALE and ROTATE, the center of our Mesh is still exactly at the center of

      // the Screen. Thus we move the Mesh back and forth between (0.5,0.5,0) and (-0.5,-0.5,0) ,

      // i.e. between the lower right and upper left corners of the screen.

      Static3D lowerRight = new Static3D( +0.5f, +0.5f, 0);

      Static3D upperLeft  = new Static3D( -0.5f, -0.5f, 0);

      diMove.add(lowerRight);

      diMove.add(upperLeft);

      mEffects.move(diMove);

      // ROTATION //////

      // Now, after the SCALE, our Texture is positioned at the center of the screen - coords (0,0,0).

      // Rotate the whole Mesh around this point, along the (0,0,1) axis (i.e. vector perpendicular to

      // the surface of the screen) starting from 0 degrees to 360 and back.

      Static3D axis = new Static3D(0,0,1);

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

      mEffects.rotate( diRotate, axis, center );

      // SCALING ///////

      // Before we apply any effects, at the very start, out Mesh skinned by the 'Cat and Dog' texture

      // fills up the whole Screen. First we need to scale it down so that the resolution of the

      // original 'Cat and Dog' bitmap are preserved, (qx/qy part) and also apply a Dynamic switching

      // the size from 80% of the Screen to 20% and back.

      Dynamic3D diScale = new Dynamic3D(duration,0.0f);

      float qx = (float)width /bmpWidth;

      float qy = (float)height/bmpHeight;

      float start_scale = 0.8f;

      float end_scale   = 0.2f;

      diScale.add(qx<qy ? (new Static3D( start_scale,start_scale*qx/qy,1)) : (new Static3D(start_scale*qy/qx,start_scale,1)));

      diScale.add(qx<qy ? (new Static3D( end_scale  ,end_scale  *qx/qy,1)) : (new Static3D(end_scale  *qy/qx,end_scale  ,1)));

      // Finally, tell the Screen itself the underlying OpenGL surface has changed dimensions.