1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
//----------------------------------------------------------------------------
// Anti-Grain Geometry (AGG) - Version 2.5
// A high quality rendering engine for C++
// Copyright (C) 2002-2006 Maxim Shemanarev
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://antigrain.com
//
// AGG is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// AGG is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with AGG; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED
#define AGG_VCGEN_SMOOTH_POLY1_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//======================================================vcgen_smooth_poly1
//
// See Implementation agg_vcgen_smooth_poly1.cpp
// Smooth polygon generator
//
//------------------------------------------------------------------------
class vcgen_smooth_poly1
{
enum status_e
{
initial,
ready,
polygon,
ctrl_b,
ctrl_e,
ctrl1,
ctrl2,
end_poly,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
vcgen_smooth_poly1();
void smooth_value(double v) { m_smooth_value = v * 0.5; }
double smooth_value() const { return m_smooth_value * 2.0; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_smooth_poly1(const vcgen_smooth_poly1&);
const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&);
void calculate(const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
const vertex_dist& v3);
vertex_storage m_src_vertices;
double m_smooth_value;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
double m_ctrl1_x;
double m_ctrl1_y;
double m_ctrl2_x;
double m_ctrl2_y;
};
}
#endif