math.geom2d.domain
Interfaces 
Boundary2D
ContinuousOrientedCurve2D
Contour2D
Domain2D
DomainSet2D
OrientedCurve2D
SmoothContour2D
SmoothOrientedCurve2D
Classes 
Boundaries2D
BoundaryPolyCurve2D
ContourArray2D
DomainArray2D
GenericDomain2D
PolyOrientedCurve2D