MPQC  3.0.0-alpha
edge.h
1 //
2 // edge.h
3 //
4 // Copyright (C) 1996 Limit Point Systems, Inc.
5 //
6 // Author: Curtis Janssen <cljanss@limitpt.com>
7 // Maintainer: LPS
8 //
9 // This file is part of the SC Toolkit.
10 //
11 // The SC Toolkit is free software; you can redistribute it and/or modify
12 // it under the terms of the GNU Library General Public License as published by
13 // the Free Software Foundation; either version 2, or (at your option)
14 // any later version.
15 //
16 // The SC Toolkit is distributed in the hope that it will be useful,
17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 // GNU Library General Public License for more details.
20 //
21 // You should have received a copy of the GNU Library General Public License
22 // along with the SC Toolkit; see the file COPYING.LIB. If not, write to
23 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 //
25 // The U.S. Government is granted a limited license as per AL 91-7.
26 //
27 
28 #ifndef _math_isosurf_edge_h
29 #define _math_isosurf_edge_h
30 
31 #include <set>
32 
33 #include <math/isosurf/vertex.h>
34 
35 namespace sc {
36 
37 class Edge: public RefCount {
38  private:
39  int _order;
40  Ref<Vertex> *_vertices; // nvertices = _order + 1
41  public:
42  Edge(const Ref<Vertex> &p1,
43  const Ref<Vertex> &p2)
44  {
45  _order = 1;
46  _vertices = new Ref<Vertex>[2];
47  _vertices[0]=p1; _vertices[1]=p2;
48  }
49  Edge(const Ref<Vertex> &p1,
50  const Ref<Vertex> &p2,
51  const Ref<Vertex> &p3);
52  Edge(const Ref<Vertex> &p1,
53  const Ref<Vertex> &p2,
54  const Ref<Vertex> &p3,
55  const Ref<Vertex> &p4);
56  ~Edge();
57  int order() const { return _order; }
58  double straight_length();
59  // return the endpoints
60  Ref<Vertex> vertex(int i) const
61  {
62  return i?_vertices[_order]:_vertices[0];
63  }
64  // returns endpoints or interior vertex 0 <= i <= order
65  Ref<Vertex> interior_vertex(int i) const
66  {
67  return _vertices[i];
68  }
69  // add the endpoints to the set
70  void add_vertices(std::set<Ref<Vertex> >&);
71  void set_order(int order, const Ref<Volume>&vol,double isovalue);
72  // find the position of a point on the edge
73  int interpolate(double location, SCVector3&point, SCVector3&norm);
74  // find the true position of a point using the isosurface
75  int interpolate(double location, SCVector3&point, SCVector3&norm,
76  const Ref<Volume> &vol, double isovalue);
77 };
78 
79 }
80 
81 #endif
82 
83 // Local Variables:
84 // mode: c++
85 // c-file-style: "CLJ"
86 // End:
sc::Ref
A template class that maintains references counts.
Definition: ref.h:361
sc::SCVector3
a 3-element version of SCVector
Definition: vector3.h:43
sc::Edge
Definition: edge.h:37
sc::RefCount
The base class for all reference counted objects.
Definition: ref.h:192
sc
Contains all MPQC code up to version 3.
Definition: mpqcin.h:14

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