Android Multimedia How to create an image with reflexion?

This takes an existing bitmap and adds a reflection to the bottom. 

 public static Bitmap createReflectedImage(Context context, Bitmap originalImage) {

  //The gap we want between the reflection and the original image

  final int reflectionGap = 4;

 

  int width = originalImage.getWidth();

  int height = originalImage.getHeight();

 

  //This will not scale but will flip on the Y axis

  Matrix matrix = new Matrix();

  matrix.preScale(1, -1);

 

  //Create a Bitmap with the flip matrix applied to it.

  //We only want the bottom half of the image

  Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height/2, width, height/2, matrix, false);

 

  

  //Create a new bitmap with same width but taller to fit reflection

  Bitmap bitmapWithReflection = Bitmap.createBitmap(width

  , (height + height/2), Config.ARGB_8888);

 

  //Create a new Canvas with the bitmap that's big enough for

  //the image plus gap plus reflection

  Canvas canvas = new Canvas(bitmapWithReflection);

  //Draw in the original image

  canvas.drawBitmap(originalImage, 0, 0, null);

  //Draw in the gap

  Paint defaultPaint = new Paint();

  canvas.drawRect(0, height, width, height + reflectionGap, defaultPaint);

  //Draw in the reflection

  canvas.drawBitmap(reflectionImage,0, height + reflectionGap, null);

 

  //Create a shader that is a linear gradient that covers the reflection

  Paint paint = new Paint();

  LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0,

  bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff,

  TileMode.CLAMP);

  //Set the paint to use this shader (linear gradient)

  paint.setShader(shader);

  //Set the Transfer mode to be porter duff and destination in

  paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));

  //Draw a rectangle using the paint with our linear gradient

  canvas.drawRect(0, height, width,

  bitmapWithReflection.getHeight() + reflectionGap, paint);

 

  return bitmapWithReflection;

 }