Anti-Grain Geometry Tutorial
agg_arrowhead.h
1 //----------------------------------------------------------------------------
2 // Anti-Grain Geometry - Version 2.4
3 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
4 //
5 // Permission to copy, use, modify, sell and distribute this software
6 // is granted provided this copyright notice appears in all copies.
7 // This software is provided "as is" without express or implied
8 // warranty, and with no claim as to its suitability for any purpose.
9 //
10 //----------------------------------------------------------------------------
11 // Contact: mcseem@antigrain.com
12 // mcseemagg@yahoo.com
13 // http://www.antigrain.com
14 //----------------------------------------------------------------------------
15 //
16 // Simple arrowhead/arrowtail generator
17 //
18 //----------------------------------------------------------------------------
19 #ifndef AGG_ARROWHEAD_INCLUDED
20 #define AGG_ARROWHEAD_INCLUDED
21 
22 #include "agg_basics.h"
23 
24 namespace agg
25 {
26 
27  //===============================================================arrowhead
28  //
29  // See implementation agg_arrowhead.cpp
30  //
31  class arrowhead
32  {
33  public:
34  arrowhead();
35 
36  void head(double d1, double d2, double d3, double d4)
37  {
38  m_head_d1 = d1;
39  m_head_d2 = d2;
40  m_head_d3 = d3;
41  m_head_d4 = d4;
42  m_head_flag = true;
43  }
44 
45  void head() { m_head_flag = true; }
46  void no_head() { m_head_flag = false; }
47 
48  void tail(double d1, double d2, double d3, double d4)
49  {
50  m_tail_d1 = d1;
51  m_tail_d2 = d2;
52  m_tail_d3 = d3;
53  m_tail_d4 = d4;
54  m_tail_flag = true;
55  }
56 
57  void tail() { m_tail_flag = true; }
58  void no_tail() { m_tail_flag = false; }
59 
60  void rewind(unsigned path_id);
61  unsigned vertex(double* x, double* y);
62 
63  private:
64  double m_head_d1;
65  double m_head_d2;
66  double m_head_d3;
67  double m_head_d4;
68  double m_tail_d1;
69  double m_tail_d2;
70  double m_tail_d3;
71  double m_tail_d4;
72  bool m_head_flag;
73  bool m_tail_flag;
74  double m_coord[16];
75  unsigned m_cmd[8];
76  unsigned m_curr_id;
77  unsigned m_curr_coord;
78  };
79 
80 }
81 
82 #endif
agg
Definition: agg_arc.cpp:24