agg_vcgen_stroke.h revision ac3d58cff7c80b0ef56bf55130d91da17cbaa3c4 
1
2//----------------------------------------------------------------------------
3// Anti-Grain Geometry - Version 2.3
4// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
5//
6// Permission to copy, use, modify, sell and distribute this software
7// is granted provided this copyright notice appears in all copies.
8// This software is provided "as is" without express or implied
9// warranty, and with no claim as to its suitability for any purpose.
10//
11//----------------------------------------------------------------------------
12// Contact: mcseem@antigrain.com
13//          mcseemagg@yahoo.com
14//          http://www.antigrain.com
15//----------------------------------------------------------------------------
16#ifndef AGG_VCGEN_STROKE_INCLUDED
17#define AGG_VCGEN_STROKE_INCLUDED
18#include "agg_math_stroke.h"
19namespace agg
20{
21class vcgen_stroke
22{
23    enum status_e {
24        initial,
25        ready,
26        cap1,
27        cap2,
28        outline1,
29        close_first,
30        outline2,
31        out_vertices,
32        end_poly1,
33        end_poly2,
34        stop
35    };
36public:
37    typedef vertex_sequence<vertex_dist_cmd, 6> vertex_storage;
38    typedef pod_deque<point_type, 6>        coord_storage;
39    vcgen_stroke();
40    void line_cap(line_cap_e lc)
41    {
42        m_line_cap = lc;
43    }
44    void line_join(line_join_e lj)
45    {
46        m_line_join = lj;
47    }
48    void inner_join(inner_join_e ij)
49    {
50        m_inner_join = ij;
51    }
52    line_cap_e   line_cap()   const
53    {
54        return m_line_cap;
55    }
56    line_join_e  line_join()  const
57    {
58        return m_line_join;
59    }
60    inner_join_e inner_join() const
61    {
62        return m_inner_join;
63    }
64    void width(FX_FLOAT w)
65    {
66        m_width = w / 2;
67    }
68    void miter_limit(FX_FLOAT ml)
69    {
70        m_miter_limit = ml;
71    }
72    void miter_limit_theta(FX_FLOAT t);
73    void inner_miter_limit(FX_FLOAT ml)
74    {
75        m_inner_miter_limit = ml;
76    }
77    void approximation_scale(FX_FLOAT as)
78    {
79        m_approx_scale = as;
80    }
81    FX_FLOAT width() const
82    {
83        return m_width * 2;
84    }
85    FX_FLOAT miter_limit() const
86    {
87        return m_miter_limit;
88    }
89    FX_FLOAT inner_miter_limit() const
90    {
91        return m_inner_miter_limit;
92    }
93    FX_FLOAT approximation_scale() const
94    {
95        return m_approx_scale;
96    }
97    void remove_all();
98    void add_vertex(FX_FLOAT x, FX_FLOAT y, unsigned cmd);
99    void     rewind(unsigned path_id);
100    unsigned vertex(FX_FLOAT* x, FX_FLOAT* y);
101private:
102    vcgen_stroke(const vcgen_stroke&);
103    const vcgen_stroke& operator = (const vcgen_stroke&);
104    vertex_storage m_src_vertices;
105    coord_storage  m_out_vertices;
106    FX_FLOAT         m_width;
107    FX_FLOAT         m_miter_limit;
108    FX_FLOAT         m_inner_miter_limit;
109    FX_FLOAT         m_approx_scale;
110    line_cap_e     m_line_cap;
111    line_join_e    m_line_join;
112    inner_join_e   m_inner_join;
113    unsigned       m_closed;
114    status_e       m_status;
115    status_e       m_prev_status;
116    unsigned       m_src_vertex;
117    unsigned       m_out_vertex;
118};
119}
120#endif
121