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++ // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #ifndef QT3DRENDER_RENDER_SPHERE_H
++ #define QT3DRENDER_RENDER_SPHERE_H
++
++ //
++ // W A R N I N G
++ // -------------
++ //
++ // This file is not part of the Qt API. It exists for the convenience
++ // of other Qt classes. This header file may change from version to
++ // version without notice, or even be removed.
++ //
++ // We mean it.
++ //
++
++ #include <Qt3DRender/private/qt3drender_global_p.h>
++ #include <Qt3DCore/qnodeid.h>
++ #include <Qt3DCore/private/matrix4x4_p.h>
++ #include <Qt3DRender/private/boundingsphere_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DRender {
++
++ namespace Render {
++
++ class Q_3DRENDERSHARED_PRIVATE_EXPORT Sphere : public RayCasting::BoundingSphere
++ {
++ public:
++ inline Sphere(Qt3DCore::QNodeId i = Qt3DCore::QNodeId())
++ : m_center()
++ , m_radius(-1.0f)
++ , m_id(i)
++ {}
++
++ inline Sphere(const Vector3D &c, float r, Qt3DCore::QNodeId i = Qt3DCore::QNodeId())
++ : m_center(c)
++ , m_radius(r)
++ , m_id(i)
++ {}
++
++ void setCenter(const Vector3D &c);
++ Vector3D center() const override;
++
++ bool isNull() const { return m_center == Vector3D() && m_radius == -1.0f; }
++
++ void setRadius(float r);
++ float radius() const override;
++
++ void clear();
++ void initializeFromPoints(const QList<Vector3D> &points);
++ void expandToContain(const Vector3D &point);
++ inline void expandToContain(const QList<Vector3D> &points)
++ {
++ for (const Vector3D &p : points)
++ expandToContain(p);
++ }
++
++ void expandToContain(const Sphere &sphere);
++
++ Sphere transformed(const Matrix4x4 &mat) const;
++ inline Sphere &transform(const Matrix4x4 &mat)
++ {
++ *this = transformed(mat);
++ return *this;
++ }
++
++ Qt3DCore::QNodeId id() const final;
++ bool intersects(const RayCasting::QRay3D &ray, Vector3D *q, Vector3D *uvw = nullptr) const final;
++ Type type() const final;
++
++ static Sphere fromPoints(const QList<Vector3D> &points);
++
++ private:
++ Vector3D m_center;
++ float m_radius;
++ Qt3DCore::QNodeId m_id;
++
++ static const float ms_epsilon;
++ };
++
++ inline void Sphere::setCenter(const Vector3D &c)
++ {
++ m_center = c;
++ }
++
++ inline Vector3D Sphere::center() const
++ {
++ return m_center;
++ }
++
++ inline void Sphere::setRadius(float r)
++ {
++ Q_ASSERT(r >= 0.0f);
++ if (r >= 0.0f)
++ m_radius = r;
++ }
++
++ inline float Sphere::radius() const
++ {
++ return m_radius;
++ }
++
++ inline void Sphere::clear()
++ {
++ m_center = Vector3D();
++ m_radius = -1.0f;
++ }
++
++ inline bool intersects(const Sphere &a, const Sphere &b)
++ {
++ if (a.isNull() || b.isNull())
++ return false;
++
++ // Calculate squared distance between sphere centers
++ const Vector3D d = a.center() - b.center();
++ const float distSq = Vector3D::dotProduct(d, d);
++
++ // Spheres intersect if squared distance is less than squared
++ // sum of radii
++ const float sumRadii = a.radius() + b.radius();
++ return distSq <= sumRadii * sumRadii;
++ }
++
++ #ifndef QT_NO_DEBUG_STREAM
++ Q_3DRENDERSHARED_EXPORT QDebug operator<<(QDebug dbg, const Sphere &sphere);
++ #endif
++
++ } // Render
++
++ } // Qt3DRender
++
++ QT_END_NAMESPACE
++
++ Q_DECLARE_METATYPE(Qt3DRender::Render::Sphere) // LCOV_EXCL_LINE
++
++ #endif // QT3DRENDER_RENDER_SPHERE_H