volume_dat2.c reading bball.dat 
status=0, zmax=1, points=42, polys=90 

xmin=-0.951060, xmax=0.951060, ymin=-1.000000, ymax=1.000000 
zmin=-1.000000, zmax=1.000000 
enclosing area= 23.217, enclosing volume= 7.60848 

final total area = 13.1894, total volume = 3.94159