Anti-Grain Geometry Tutorial
agg_vcgen_stroke.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 #ifndef AGG_VCGEN_STROKE_INCLUDED
17 #define AGG_VCGEN_STROKE_INCLUDED
18 
19 #include "agg_math_stroke.h"
20 
21 
22 namespace agg
23 {
24 
25  //============================================================vcgen_stroke
26  //
27  // See Implementation agg_vcgen_stroke.cpp
28  // Stroke generator
29  //
30  //------------------------------------------------------------------------
31  class vcgen_stroke
32  {
33  enum status_e
34  {
35  initial,
36  ready,
37  cap1,
38  cap2,
39  outline1,
40  close_first,
41  outline2,
42  out_vertices,
43  end_poly1,
44  end_poly2,
45  stop
46  };
47 
48  public:
49  typedef vertex_sequence<vertex_dist, 6> vertex_storage;
50  typedef pod_bvector<point_d, 6> coord_storage;
51 
52  vcgen_stroke();
53 
54  void line_cap(line_cap_e lc) { m_stroker.line_cap(lc); }
55  void line_join(line_join_e lj) { m_stroker.line_join(lj); }
56  void inner_join(inner_join_e ij) { m_stroker.inner_join(ij); }
57 
58  line_cap_e line_cap() const { return m_stroker.line_cap(); }
59  line_join_e line_join() const { return m_stroker.line_join(); }
60  inner_join_e inner_join() const { return m_stroker.inner_join(); }
61 
62  void width(double w) { m_stroker.width(w); }
63  void miter_limit(double ml) { m_stroker.miter_limit(ml); }
64  void miter_limit_theta(double t) { m_stroker.miter_limit_theta(t); }
65  void inner_miter_limit(double ml) { m_stroker.inner_miter_limit(ml); }
66  void approximation_scale(double as) { m_stroker.approximation_scale(as); }
67 
68  double width() const { return m_stroker.width(); }
69  double miter_limit() const { return m_stroker.miter_limit(); }
70  double inner_miter_limit() const { return m_stroker.inner_miter_limit(); }
71  double approximation_scale() const { return m_stroker.approximation_scale(); }
72 
73  void shorten(double s) { m_shorten = s; }
74  double shorten() const { return m_shorten; }
75 
76  // Vertex Generator Interface
77  void remove_all();
78  void add_vertex(double x, double y, unsigned cmd);
79 
80  // Vertex Source Interface
81  void rewind(unsigned path_id);
82  unsigned vertex(double* x, double* y);
83 
84  private:
85  vcgen_stroke(const vcgen_stroke&);
86  const vcgen_stroke& operator = (const vcgen_stroke&);
87 
88  math_stroke<coord_storage> m_stroker;
89  vertex_storage m_src_vertices;
90  coord_storage m_out_vertices;
91  double m_shorten;
92  unsigned m_closed;
93  status_e m_status;
94  status_e m_prev_status;
95  unsigned m_src_vertex;
96  unsigned m_out_vertex;
97  };
98 
99 
100 }
101 
102 #endif
agg::math_stroke
Definition: agg_math_stroke.h:57
agg::vcgen_stroke
Definition: agg_vcgen_stroke.h:31
agg::pod_bvector< point_d, 6 >
agg::vertex_sequence< vertex_dist, 6 >
agg
Definition: agg_arc.cpp:24