Introduction to Solid Modeling
Introduction to Solid Modeling
Primitives for the manipulation of general subdivisions and the computation of Voronoi
ACM Transactions on Graphics (TOG)
Principles of CAD/CAM/CAE Systems
Principles of CAD/CAM/CAE Systems
CAD/Cam Theory and Practice
Digital Elevation Models and TIN Algorithms
Algorithmic Foundations of Geographic Information Systems, this book originated from the CISM Advanced School on the Algorithmic Foundations of Geographic Information Systems
Winged edge polyhedron representation.
Winged edge polyhedron representation.
TIN meets CAD: extending the TIN concept in GIS
Future Generation Computer Systems - Special issue: Geocomputation
Updating 3D city models: how to preserve geometric-topological consistency
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
How to achieve consistency for 3D city models
Geoinformatica
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Extending the current "2.5D" terrain model is a necessary development in GIS. Existing 2D surface information must be extended to 3D, while trying to preserve the topological integrity. Computer-Aided Design (CAD) on the other hand is often fully 3D, which may be excessive for our "extended 2D" mapping needs. We have used the "boundary representation" (b-rep) design from CAD systems, based on manifold models, to address these problems. Triangulated Irregular Network (TIN) models of the terrain surface are well known in Geographic Information System (GIS), but are unable to represent cliffs, caves or holes, which are required to represent complex buildings. The simple TIN b-rep structures may be extended using formal Euler Operators to add simple CAD functionality while guaranteeing the connectivity required for terrain modelling. We believe this provides a simple and reliable extension that is sufficient for many applications.