qgsaabb.h

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/***************************************************************************
  qgsaabb.h
  --------------------------------------
  Date                 : July 2017
  Copyright            : (C) 2017 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSAABB_H
#define QGSAABB_H
 
#include "qgis_3d.h"
#include "qgsbox3d.h"
 
#include <QList>
#include <QVector3D>
 
#define SIP_NO_FILE

class _3D_EXPORT QgsAABB
{
  public:
    QgsAABB() = default;

    QgsAABB( float xMin, float yMin, float zMin, float xMax, float yMax, float zMax );

    static QgsAABB fromBox3D( const QgsBox3D &box3D, const QgsVector3D &origin )
    {
      return QgsAABB(
        static_cast<float>( box3D.xMinimum() - origin.x() ),
        static_cast<float>( box3D.yMinimum() - origin.y() ),
        static_cast<float>( box3D.zMinimum() - origin.z() ),
        static_cast<float>( box3D.xMaximum() - origin.x() ),
        static_cast<float>( box3D.yMaximum() - origin.y() ),
        static_cast<float>( box3D.zMaximum() - origin.z() )
      );
    }

    float xExtent() const { return xMax - xMin; }
    float yExtent() const { return yMax - yMin; }
    float zExtent() const { return zMax - zMin; }

    float xCenter() const { return ( xMax + xMin ) / 2; }
    float yCenter() const { return ( yMax + yMin ) / 2; }
    float zCenter() const { return ( zMax + zMin ) / 2; }

    QVector3D center() const { return QVector3D( xCenter(), yCenter(), zCenter() ); }
    QVector3D minimum() const { return QVector3D( xMin, yMin, zMin ); }
    QVector3D maximum() const { return QVector3D( xMax, yMax, zMax ); }

    bool intersects( const QgsAABB &other ) const;

    bool intersects( float x, float y, float z ) const;

    float distanceFromPoint( float x, float y, float z ) const;

    float distanceFromPoint( QVector3D v ) const;

    QList<QVector3D> verticesForLines() const;

    QString toString() const;

    bool isEmpty() const { return xMin == xMax && yMin == yMax && zMin == zMax; }
 
    float xMin = 0.0f;
    float yMin = 0.0f;
    float zMin = 0.0f;
    float xMax = 0.0f;
    float yMax = 0.0f;
    float zMax = 0.0f;
};
 
#endif // QGSAABB_H