qaxisalignedboundingbox.cpp

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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

++

++ #include "qaxisalignedboundingbox_p.h"

++

++ #include <QDebug>

++ #include <QMatrix4x4>

++

++ QT_BEGIN_NAMESPACE

++

++ namespace Qt3DRender {

++

++ void QAxisAlignedBoundingBox::update(const std::vector<QVector3D> &points)

++ {

++     if (points.empty()) {

++         m_center = QVector3D();

++         m_radii = QVector3D();

++         return;

++     }

++

++     QVector3D minPoint = points.at( 0 );

++     QVector3D maxPoint = points.at( 0 );

++

++     for (size_t i = 1; i < points.size(); ++i) {

++         const QVector3D &point = points.at(i);

++         if (point.x() > maxPoint.x())

++             maxPoint.setX(point.x());

++         if (point.y() > maxPoint.y())

++             maxPoint.setY(point.y());

++         if (point.z() > maxPoint.z())

++             maxPoint.setZ(point.z());

++         if (point.x() < minPoint.x())

++             minPoint.setX(point.x());

++         if (point.y() < minPoint.y())

++             minPoint.setY(point.y());

++         if (point.z() < minPoint.z())

++             minPoint.setZ(point.z());

++     }

++

++     m_center = 0.5 * (minPoint + maxPoint);

++     m_radii = 0.5 * (maxPoint - minPoint);

++ #if 0

++     qDebug() << "AABB:";

++     qDebug() << "    min =" << minPoint;

++     qDebug() << "    max =" << maxPoint;

++     qDebug() << " center =" << m_center;

++     qDebug() << "  radii =" << m_radii;

++ #endif

++ }

++

++ QDebug operator<<(QDebug dbg, const QAxisAlignedBoundingBox &c)

++ {

++     QDebugStateSaver saver(dbg);

++     dbg.nospace() << "AABB ( min:" << c.minPoint() << ", max:" << c.maxPoint() << ')';

++     return dbg;

++ }

++

++ } //namespace Qt3DRender

++

++ QT_END_NAMESPACE