[Jts-topo-suite-user] Constructing Geometries; Planar Graphs

[Nick W. <nic...@gm...>]

Hi,

I'm new to JTS and have some questions.

I would like to incrementally construct an areal geometry
(Polygon?) representing a room, potentially with holes representing pillars,
for rendering in a 3D environment. As such, how do I best go about:

   - The incremental construction of the geometry? Is this best handled by
   GeometryEditor?
   - Extracting all relevant line segments representing walls, in order to
   construct the required triangles for rendering?
   - Inspecting the line segments in order to determine which side of each
   one faces INTO the polygon, so that I can set up the correct surface
   normals?


Also, since I would also like to use PlanarGraph: how does PlanarGraph
maintain planarity of it's underlying structure? Looking in PlanarGraph I
don't see much about searching for Kuratowski subgraphs, nor do I see that
it controls edge additions. Can you enlighten me as to how this works?

Thanks for what so far appears to be a great library.

Regards,

-- 
Nick Wiggill
www.handcraftedgames.net