contrib/gel/vtol/vtol_face.h File Reference

Represents the basic 2D topological entity. More...

#include <vcl_iosfwd.h>
#include <vcl_vector.h>
#include <vtol/vtol_topology_object.h>
#include <vtol/vtol_one_chain.h>
#include <vtol/vtol_two_chain.h>

Go to the source code of this file.

Classes
class	vtol_face

---

Detailed Description

Represents the basic 2D topological entity.

The vtol_face class is used to represent a topological face. The connectivity between faces may be obtained from the superior 2-chains of the face. The boundary of the face may be obtained from the inferior 1-chains of the face.

    Modifications:
     JLM Dec 1995: Added timeStamp (Touch) to
         operations which affect bounds.
     JLM Dec 1995: Added method for ComputeBoundingBox
         (Need to decide proper policy for curved surfaces
         and possibly inconsistent planar surface geometry)
     JSL Computed Area()
     JLM Sep 1996: Fixed the face copy constructor which
         did not handle the construction of new vtol_edge(s) properly.
         The old implementation always constructed ImplicitLine(s)
         for the curve of each new edge.  See vtol_edge.h for the required
         alterations of the vtol_edge constructors.  There is still an
         issue with proper copying of the vtol_face's Surface.  It isn't
         done correctly.
     PVR Aug 97: is_within_projection() implementation restored.
     AWF Jul 1998: General topology speedup by replacing calls to
         vertices() et al with iterators.  Benchmark: constructing
         40K triangles, old: 37 sec, new: 9 sec.
     PTU may-2000 ported to vxl
     Dec. 2002, Peter Vanroose -interface change: vtol objects -> smart pointers
     9 Jan. 2003, Peter Vanroose - added pure virtual "copy_geometry()"
     5 Feb. 2003, Peter Vanroose - moved IsHoleP() here from vtol_intensity_face
     22 Sep.2004, Peter Vanroose - added cast_to_intensity_face()
   

Definition in file vtol_face.h.