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
|
/*
Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <wildfox@kde.org>
2004, 2005 Rob Buis <buis@kde.org>
2005 Eric Seidel <eric@webkit.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
aint with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "third_party/blink/renderer/platform/geometry/float_point_3d.h"
#include <math.h>
#include "third_party/blink/renderer/platform/wtf/math_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/text_stream.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "ui/gfx/geometry/point3_f.h"
namespace blink {
void FloatPoint3D::Normalize() {
float temp_length = length();
if (temp_length) {
x_ /= temp_length;
y_ /= temp_length;
z_ /= temp_length;
}
}
float FloatPoint3D::AngleBetween(const FloatPoint3D& y) const {
float x_length = this->length();
float y_length = y.length();
if (x_length && y_length) {
float cos_angle = this->Dot(y) / (x_length * y_length);
// Due to round-off |cosAngle| can have a magnitude greater than 1. Clamp
// the value to [-1, 1] before computing the angle.
return acos(clampTo(cos_angle, -1.0, 1.0));
}
return 0;
}
FloatPoint3D::operator gfx::Point3F() const {
return gfx::Point3F(x_, y_, z_);
}
std::ostream& operator<<(std::ostream& ostream, const FloatPoint3D& point) {
return ostream << point.ToString();
}
String FloatPoint3D::ToString() const {
return String::Format("%lg,%lg,%lg", X(), Y(), Z());
}
WTF::TextStream& operator<<(WTF::TextStream& ts, const FloatPoint3D& p) {
ts << "x=" << p.X() << " y=" << p.Y() << " z=" << p.Z();
return ts;
}
} // namespace blink
|
