1 | // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QT3DRENDER_RENDER_SPHERE_H |
5 | #define QT3DRENDER_RENDER_SPHERE_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists for the convenience |
12 | // of other Qt classes. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <Qt3DRender/private/qt3drender_global_p.h> |
19 | #include <Qt3DCore/qnodeid.h> |
20 | #include <Qt3DCore/private/matrix4x4_p.h> |
21 | #include <Qt3DRender/private/boundingsphere_p.h> |
22 | |
23 | QT_BEGIN_NAMESPACE |
24 | |
25 | namespace Qt3DRender { |
26 | |
27 | namespace Render { |
28 | |
29 | class Q_3DRENDERSHARED_PRIVATE_EXPORT Sphere : public RayCasting::BoundingSphere |
30 | { |
31 | public: |
32 | inline Sphere(Qt3DCore::QNodeId i = Qt3DCore::QNodeId()) |
33 | : m_center() |
34 | , m_radius(-1.0f) |
35 | , m_id(i) |
36 | {} |
37 | |
38 | inline Sphere(const Vector3D &c, float r, Qt3DCore::QNodeId i = Qt3DCore::QNodeId()) |
39 | : m_center(c) |
40 | , m_radius(r) |
41 | , m_id(i) |
42 | {} |
43 | |
44 | void setCenter(const Vector3D &c); |
45 | Vector3D center() const override; |
46 | |
47 | bool isNull() const { return m_center == Vector3D() && m_radius == -1.0f; } |
48 | |
49 | void setRadius(float r); |
50 | float radius() const override; |
51 | |
52 | void clear(); |
53 | void initializeFromPoints(const QList<Vector3D> &points); |
54 | void expandToContain(const Vector3D &point); |
55 | inline void expandToContain(const QList<Vector3D> &points) |
56 | { |
57 | for (const Vector3D &p : points) |
58 | expandToContain(point: p); |
59 | } |
60 | |
61 | void expandToContain(const Sphere &sphere); |
62 | |
63 | Sphere transformed(const Matrix4x4 &mat) const; |
64 | inline Sphere &transform(const Matrix4x4 &mat) |
65 | { |
66 | *this = transformed(mat); |
67 | return *this; |
68 | } |
69 | |
70 | Qt3DCore::QNodeId id() const final; |
71 | bool intersects(const RayCasting::QRay3D &ray, Vector3D *q, Vector3D *uvw = nullptr) const final; |
72 | Type type() const final; |
73 | |
74 | static Sphere fromPoints(const QList<Vector3D> &points); |
75 | |
76 | private: |
77 | Vector3D m_center; |
78 | float m_radius; |
79 | Qt3DCore::QNodeId m_id; |
80 | |
81 | static const float ms_epsilon; |
82 | }; |
83 | |
84 | inline void Sphere::setCenter(const Vector3D &c) |
85 | { |
86 | m_center = c; |
87 | } |
88 | |
89 | inline Vector3D Sphere::center() const |
90 | { |
91 | return m_center; |
92 | } |
93 | |
94 | inline void Sphere::setRadius(float r) |
95 | { |
96 | Q_ASSERT(r >= 0.0f); |
97 | if (r >= 0.0f) |
98 | m_radius = r; |
99 | } |
100 | |
101 | inline float Sphere::radius() const |
102 | { |
103 | return m_radius; |
104 | } |
105 | |
106 | inline void Sphere::clear() |
107 | { |
108 | m_center = Vector3D(); |
109 | m_radius = -1.0f; |
110 | } |
111 | |
112 | inline bool intersects(const Sphere &a, const Sphere &b) |
113 | { |
114 | if (a.isNull() || b.isNull()) |
115 | return false; |
116 | |
117 | // Calculate squared distance between sphere centers |
118 | const Vector3D d = a.center() - b.center(); |
119 | const float distSq = Vector3D::dotProduct(a: d, b: d); |
120 | |
121 | // Spheres intersect if squared distance is less than squared |
122 | // sum of radii |
123 | const float sumRadii = a.radius() + b.radius(); |
124 | return distSq <= sumRadii * sumRadii; |
125 | } |
126 | |
127 | #ifndef QT_NO_DEBUG_STREAM |
128 | Q_3DRENDERSHARED_EXPORT QDebug operator<<(QDebug dbg, const Sphere &sphere); |
129 | #endif |
130 | |
131 | } // Render |
132 | |
133 | } // Qt3DRender |
134 | |
135 | QT_END_NAMESPACE |
136 | |
137 | Q_DECLARE_METATYPE(Qt3DRender::Render::Sphere) // LCOV_EXCL_LINE |
138 | |
139 | #endif // QT3DRENDER_RENDER_SPHERE_H |
140 | |