1 //----------------------------------------------------------------------------
2 // Anti-Grain Geometry (AGG) - Version 2.5
3 // A high quality rendering engine for C++
4 // Copyright (C) 2002-2006 Maxim Shemanarev
5 // Contact: mcseem@antigrain.com
6 //          mcseemagg@yahoo.com
7 //          http://antigrain.com
8 //
9 // AGG is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU General Public License
11 // as published by the Free Software Foundation; either version 2
12 // of the License, or (at your option) any later version.
13 //
14 // AGG is distributed in the hope that it will be useful,
15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 // GNU General Public License for more details.
18 //
19 // You should have received a copy of the GNU General Public License
20 // along with AGG; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 // MA 02110-1301, USA.
23 //----------------------------------------------------------------------------
24 
25 #ifndef AGG_VCGEN_STROKE_INCLUDED
26 #define AGG_VCGEN_STROKE_INCLUDED
27 
28 #include "agg_math_stroke.h"
29 
30 
31 namespace agg
32 {
33 
34     //============================================================vcgen_stroke
35     //
36     // See Implementation agg_vcgen_stroke.cpp
37     // Stroke generator
38     //
39     //------------------------------------------------------------------------
40     class vcgen_stroke
41     {
42         enum status_e
43         {
44             initial,
45             ready,
46             cap1,
47             cap2,
48             outline1,
49             close_first,
50             outline2,
51             out_vertices,
52             end_poly1,
53             end_poly2,
54             stop
55         };
56 
57     public:
58         typedef vertex_sequence<vertex_dist, 6> vertex_storage;
59         typedef pod_bvector<point_d, 6>         coord_storage;
60 
61         vcgen_stroke();
62 
line_cap(line_cap_e lc)63         void line_cap(line_cap_e lc)     { m_stroker.line_cap(lc); }
line_join(line_join_e lj)64         void line_join(line_join_e lj)   { m_stroker.line_join(lj); }
inner_join(inner_join_e ij)65         void inner_join(inner_join_e ij) { m_stroker.inner_join(ij); }
66 
line_cap()67         line_cap_e   line_cap()   const { return m_stroker.line_cap(); }
line_join()68         line_join_e  line_join()  const { return m_stroker.line_join(); }
inner_join()69         inner_join_e inner_join() const { return m_stroker.inner_join(); }
70 
width(double w)71         void width(double w) { m_stroker.width(w); }
miter_limit(double ml)72         void miter_limit(double ml) { m_stroker.miter_limit(ml); }
miter_limit_theta(double t)73         void miter_limit_theta(double t) { m_stroker.miter_limit_theta(t); }
inner_miter_limit(double ml)74         void inner_miter_limit(double ml) { m_stroker.inner_miter_limit(ml); }
approximation_scale(double as)75         void approximation_scale(double as) { m_stroker.approximation_scale(as); }
76 
width()77         double width() const { return m_stroker.width(); }
miter_limit()78         double miter_limit() const { return m_stroker.miter_limit(); }
inner_miter_limit()79         double inner_miter_limit() const { return m_stroker.inner_miter_limit(); }
approximation_scale()80         double approximation_scale() const { return m_stroker.approximation_scale(); }
81 
shorten(double s)82         void shorten(double s) { m_shorten = s; }
shorten()83         double shorten() const { return m_shorten; }
84 
85         // Vertex Generator Interface
86         void remove_all();
87         void add_vertex(double x, double y, unsigned cmd);
88 
89         // Vertex Source Interface
90         void     rewind(unsigned path_id);
91         unsigned vertex(double* x, double* y);
92 
93     private:
94         vcgen_stroke(const vcgen_stroke&);
95         const vcgen_stroke& operator = (const vcgen_stroke&);
96 
97         math_stroke<coord_storage> m_stroker;
98         vertex_storage             m_src_vertices;
99         coord_storage              m_out_vertices;
100         double                     m_shorten;
101         unsigned                   m_closed;
102         status_e                   m_status;
103         status_e                   m_prev_status;
104         unsigned                   m_src_vertex;
105         unsigned                   m_out_vertex;
106     };
107 
108 
109 }
110 
111 #endif
112