|
4224
by cilix42
Fundamentally reworked version of the 3D box tool (among many other things, this fixes bugs #168900 and #168868). See mailing list for details. Sorry for this single large commit but it was unfeasible to keep the history. |
1 |
#define __PROJ_PT_C__
|
2 |
||
3 |
/*
|
|
4 |
* 3x4 transformation matrix to map points from projective 3-space into the projective plane
|
|
5 |
*
|
|
6 |
* Authors:
|
|
7 |
* Maximilian Albert <Anhalter42@gmx.de>
|
|
8 |
*
|
|
9 |
* Copyright (C) 2007 Authors
|
|
10 |
*
|
|
11 |
* Released under GNU GPL, read the file 'COPYING' for more information
|
|
12 |
*/
|
|
13 |
||
14 |
#include "proj_pt.h" |
|
15 |
#include "svg/stringstream.h" |
|
16 |
||
17 |
namespace Proj { |
|
18 |
||
19 |
Pt2::Pt2(const gchar *coord_str) { |
|
20 |
if (!coord_str) { |
|
21 |
pt[0] = 0.0; |
|
22 |
pt[1] = 0.0; |
|
23 |
pt[2] = 1.0; |
|
24 |
g_warning ("Coordinate string is empty. Creating default Pt2\n"); |
|
25 |
return; |
|
26 |
}
|
|
27 |
gchar **coords = g_strsplit(coord_str, ":", 0); |
|
28 |
if (coords[0] == NULL || coords[1] == NULL || coords[2] == NULL) { |
|
29 |
g_strfreev (coords); |
|
30 |
g_warning ("Malformed coordinate string.\n"); |
|
31 |
return; |
|
32 |
}
|
|
33 |
||
34 |
pt[0] = g_ascii_strtod(coords[0], NULL); |
|
35 |
pt[1] = g_ascii_strtod(coords[1], NULL); |
|
36 |
pt[2] = g_ascii_strtod(coords[2], NULL); |
|
37 |
}
|
|
38 |
||
39 |
void
|
|
40 |
Pt2::normalize() { |
|
41 |
if (fabs(pt[2]) < 1E-6 || pt[2] == 1.0) |
|
42 |
return; |
|
43 |
pt[0] /= pt[2]; |
|
44 |
pt[1] /= pt[2]; |
|
45 |
pt[2] = 1.0; |
|
46 |
}
|
|
47 |
||
|
6837
by cilix42
More NR::Point ==> Geom::Point |
48 |
Geom::Point |
|
4224
by cilix42
Fundamentally reworked version of the 3D box tool (among many other things, this fixes bugs #168900 and #168868). See mailing list for details. Sorry for this single large commit but it was unfeasible to keep the history. |
49 |
Pt2::affine() { |
50 |
if (fabs(pt[2]) < epsilon) { |
|
|
9020
by JazzyNico
Code refactoring and merging with trunk (revision 10599). |
51 |
return Geom::Point (Geom::infinity(), Geom::infinity()); |
|
4224
by cilix42
Fundamentally reworked version of the 3D box tool (among many other things, this fixes bugs #168900 and #168868). See mailing list for details. Sorry for this single large commit but it was unfeasible to keep the history. |
52 |
}
|
|
6837
by cilix42
More NR::Point ==> Geom::Point |
53 |
return Geom::Point (pt[0]/pt[2], pt[1]/pt[2]); |
|
4224
by cilix42
Fundamentally reworked version of the 3D box tool (among many other things, this fixes bugs #168900 and #168868). See mailing list for details. Sorry for this single large commit but it was unfeasible to keep the history. |
54 |
}
|
55 |
||
56 |
gchar * |
|
57 |
Pt2::coord_string() { |
|
58 |
Inkscape::SVGOStringStream os; |
|
59 |
os << pt[0] << " : " |
|
60 |
<< pt[1] << " : " |
|
61 |
<< pt[2]; |
|
62 |
return g_strdup(os.str().c_str()); |
|
63 |
}
|
|
64 |
||
65 |
Pt3::Pt3(const gchar *coord_str) { |
|
66 |
if (!coord_str) { |
|
67 |
pt[0] = 0.0; |
|
68 |
pt[1] = 0.0; |
|
69 |
pt[2] = 0.0; |
|
70 |
pt[3] = 1.0; |
|
71 |
g_warning ("Coordinate string is empty. Creating default Pt2\n"); |
|
72 |
return; |
|
73 |
}
|
|
74 |
gchar **coords = g_strsplit(coord_str, ":", 0); |
|
75 |
if (coords[0] == NULL || coords[1] == NULL || |
|
76 |
coords[2] == NULL || coords[3] == NULL) { |
|
77 |
g_strfreev (coords); |
|
78 |
g_warning ("Malformed coordinate string.\n"); |
|
79 |
return; |
|
80 |
}
|
|
81 |
||
82 |
pt[0] = g_ascii_strtod(coords[0], NULL); |
|
83 |
pt[1] = g_ascii_strtod(coords[1], NULL); |
|
84 |
pt[2] = g_ascii_strtod(coords[2], NULL); |
|
85 |
pt[3] = g_ascii_strtod(coords[3], NULL); |
|
86 |
}
|
|
87 |
||
88 |
void
|
|
89 |
Pt3::normalize() { |
|
90 |
if (fabs(pt[3]) < 1E-6 || pt[3] == 1.0) |
|
91 |
return; |
|
92 |
pt[0] /= pt[3]; |
|
93 |
pt[1] /= pt[3]; |
|
94 |
pt[2] /= pt[3]; |
|
95 |
pt[3] = 1.0; |
|
96 |
}
|
|
97 |
||
98 |
gchar * |
|
99 |
Pt3::coord_string() { |
|
100 |
Inkscape::SVGOStringStream os; |
|
101 |
os << pt[0] << " : " |
|
102 |
<< pt[1] << " : " |
|
103 |
<< pt[2] << " : " |
|
104 |
<< pt[3]; |
|
105 |
return g_strdup(os.str().c_str()); |
|
106 |
}
|
|
107 |
||
108 |
} // namespace Proj |
|
109 |
||
110 |
/*
|
|
111 |
Local Variables:
|
|
112 |
mode:c++
|
|
113 |
c-file-style:"stroustrup"
|
|
114 |
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
|
|
115 |
indent-tabs-mode:nil
|
|
116 |
fill-column:99
|
|
117 |
End:
|
|
118 |
*/
|
|
|
9020
by JazzyNico
Code refactoring and merging with trunk (revision 10599). |
119 |
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
|