blob: 33aeb855b2afe821bb09c84be825955dc01ce15f (
plain)
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
|
/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include "dimensionxx.hpp"
namespace Dimension
{
// Pure virtual no-op destructor
Object::~Object()
{ }
// Intersection list for the line l
Array<double>
Object::intersections(const Line& l)
{
return Array<double>(m_object->intersections_fn(m_object, l.dmnsn()));
}
// Whether the point `point' is inside the object
bool
Object::inside(const Vector& point)
{
return m_object->inside_fn(m_object, point.dmnsn());
}
// Return the wrapped object
dmnsn_object*
Object::dmnsn()
{
return m_object;
}
// Return a const version of the wrapped canvas
const dmnsn_object*
Object::dmnsn() const
{
return m_object;
}
// Protected default no-op constructor
Object::Object()
{ }
// Custom object callbacks
namespace {
dmnsn_array *
intersections_fn(const dmnsn_object *object, dmnsn_line line)
{
Custom_Object* cobject = reinterpret_cast<Custom_Object*>(object->ptr);
return cobject->intersections(Line(line)).release();
}
int
inside_fn(const dmnsn_object *object, dmnsn_vector point)
{
Custom_Object* cobject = reinterpret_cast<Custom_Object*>(object->ptr);
return cobject->inside(Vector(point));
}
}
// Initialize a new object, using member functions as callbacks
Custom_Object::Custom_Object()
: Object(dmnsn_new_object())
{
m_object->ptr = this;
m_object->intersections_fn = &intersections_fn;
m_object->inside_fn = &inside_fn;
}
// Delete the object
Custom_Object::~Custom_Object()
{
dmnsn_delete_object(m_object);
}
}
|
