Arbitrary Square Bounded Voronoi Diagram

This function compute the individual Voronoi cell area of point sets bounded in an arbitrary square.

Inputs:
x : M x 1 array of x-coordinates
y : M x 1 array of y-coordinates
toggleplot : 1 to turn on figures, 0 to turn off figures;
[x1,x2,y1,y2] : 1 x 4 array of square edges

Outputs:
CellArea : M x 1 array of Voronoi cell area bounded in an arbitrary square

Usage:
CellArea=SquareBV(x,y,toggleplot,[x1,x2,y1,y2])
CellArea=SquareBV(x,y,toggleplot)