Manipulating Geometry using Draw
The DrawTrSurf package supports the display of parametric curves and surfaces.
The Drawable deferred classes are inherited from the Drawable3D class from the package Draw, it adds methods to draw 3D Curves and Curves on 3D Surfaces.
The classes Curve Curve2d and Surface are drawable and can be used to draw a single curve from packages Geom or Geom2d or a surface from Geom.
The Triangulation and Polygon from the package Poly are also supported.