blob: 5023a6ed3d41334191212a16ddbd6b65babe3559 (
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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*************************************************************************
* Copyright (C) 2009 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
{
// Virtual no-op destructor
Object::~Object()
{ }
// Get the transformation matrix
Matrix
Object::trans()
{
return Matrix(dmnsn()->trans);
}
// Set the transformation matrix
void
Object::trans(const Matrix& trans)
{
dmnsn()->trans = trans.dmnsn();
}
// Intersection list for the line l
Array<double>
Object::intersections(const Line& l)
{
return Array<double>((*dmnsn()->intersections_fn)(dmnsn(), l.dmnsn()));
}
// Whether the point `point' is inside the object
bool
Object::inside(const Vector& point)
{
return (*dmnsn()->inside_fn)(dmnsn(), point.dmnsn());
}
// Return the wrapped object
dmnsn_object*
Object::dmnsn()
{
if (!m_object) {
throw Dimension_Error("Attempt to access NULL object.");
}
return *m_object;
}
// Return a const version of the wrapped canvas
const dmnsn_object*
Object::dmnsn() const
{
if (!m_object) {
throw Dimension_Error("Attempt to access NULL object.");
}
return *m_object;
}
// Protected default no-op constructor
Object::Object()
: m_object()
{ }
// Protected copy constructor
Object::Object(const Object& object)
: m_object(object.m_object)
{ }
// Protected manual constructor
Object::Object(dmnsn_object* object)
: m_object(new dmnsn_object*(object))
{ }
// Is m_object unique?
bool
Object::unique() const
{
return m_object && m_object.unique();
}
// Set the wrapped dmnsn_object*
void
Object::dmnsn(dmnsn_object* object)
{
m_object.reset(new dmnsn_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())
{
dmnsn()->ptr = this;
dmnsn()->intersections_fn = &intersections_fn;
dmnsn()->inside_fn = &inside_fn;
}
// Delete the object
Custom_Object::~Custom_Object()
{
if (unique()) {
dmnsn_delete_object(dmnsn());
}
}
}
|
