Distorted Android

 * Wrapper around the standard Android Bitmap class to which one can apply graphical effects.

 * <p>

 * General idea is as follows:

 * <ul>

 * <li> Create an instance of DistortedBitmap

 * <li> Paint something onto the Bitmap that's backing it up

 * <li> Apply some effects

 * <li> Draw it!

 * </ul>

 * <p>

 * The effects we can apply fall into three general categories:

 * <ul>

 * <li> Matrix Effects, i.e. ones that change the Bitmap's ModelView Matrix (moves, scales, rotations)

 * <li> Vertex Effects, i.e. effects that are implemented in the Vertex Shader. Those typically change

 *      the shape of (some sub-Region of) the Bitmap in some way (deforms, distortions, sinks)

 * <li> Fragment Effects, i.e. effects that change (some of) the pixels of the Bitmap (transparency, macroblock)

 * </ul>

 * <p>

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