How to get a table from a regionspec:
The normal form is in reg.ToString();
After simplesimplify()


try {
Region reg = Parser.compile(s, true);
if (reg != null) {
	reg.SimpleSimplify(S.Const.Epsilon);
	S.SuperRegion sreg = new S.SuperRegion(reg, true, false);
	cover = DuperCover.HidRange(sreg, dir, false) ;
}
} cach (ApplicationException e){
	// e.Message;
}
...
How to make a circle:
Simple region, with a singe halfspace
...
How to make a table of halfspaces:
Get from Region.
...
