Distorted Android

 *               second is the wave length, third is the offset (i.e. when offset = PI/2, the sine

 *               wave at the center does not start from sin(0), but from sin(PI/2) ) and the next two

 *               describe the 'direction' of the wave.

 *               Wave direction is defined to be a 3D vector of length 1. To define such vectors, we

 *               need 2 floats: thus the third member is the angle Alpha (in degrees) which the vector

 *               forms with the XY-plane, and the fourth is the angle Beta (again in degrees) which

 *               the projection of the vector to the XY-plane forms with the Y-axis (counterclockwise).

 *               Example1: if Alpha = 90, Beta = 90, (then V=(0,0,1) ) and the wave acts 'vertically'

 *               in the X-direction, i.e. cross-sections of the resulting surface with the XZ-plane

 *               will be sine shapes.

 *               Example2: if Alpha = 90, Beta = 0, the again V=(0,0,1) and the wave is 'vertical',

 *               but this time it waves in the Y-direction, i.e. cross sections of the surface and the

 *               YZ-plane with be sine shapes.

 *               Example3: if Alpha = 0 and Beta = 45, then V=(sqrt(2)/2, -sqrt(2)/2, 0) and the wave

 *               is entirely 'horizontal' and moves point (x,y,0) in direction V by whatever is the

 *               value if sin at this point.