qgstiledscenechunkloader_p.h

Go to the documentation of this file.

/***************************************************************************
  qgstiledscenechunkloader_p.h
  --------------------------------------
  Date                 : July 2023
  Copyright            : (C) 2023 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 QGSTILEDSCENECHUNKLOADER_P_H
#define QGSTILEDSCENECHUNKLOADER_P_H

 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the QGIS API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
 
#include "qgs3drendercontext.h"
#include "qgschunkedentity.h"
#include "qgschunkloader.h"
#include "qgschunknode.h"
#include "qgscoordinatetransform.h"
#include "qgstiledsceneindex.h"
#include "qgstiledscenetile.h"
 
#include <QFutureWatcher>
 
#define SIP_NO_FILE
 
class Qgs3DMapSettings;
 

class QgsTiledSceneChunkLoader : public QgsChunkLoader
{
    Q_OBJECT
  public:
    QgsTiledSceneChunkLoader(
      const Qgs3DRenderContext &context, const QgsTiledSceneIndex &index, QgsCoordinateReferenceSystem tileCrs, QgsCoordinateReferenceSystem layerCrs, double zValueScale, double zValueOffset
    );
 
    QFuture<QgsChunkLoaderResult> loadChunk( QgsChunkNode *node ) override;
    QgsChunkNode *createRootNode() const override;
    QFuture<QVector<QgsChunkNode *>> createChildren( QgsChunkNode *node ) override;
 
    QgsChunkNode *nodeForTile( const QgsTiledSceneTile &t, const QgsChunkNodeId &nodeId, QgsChunkNode *parent ) const;
    QFuture<void> fetchHierarchyForNode( long long nodeId );
 
  private:
    QFuture<void> prepareChildren( QgsChunkNode *node );
 
    QHash<long long, QFuture<void>> mRunningHierarchyFetches;
 
    // Each worker thread loading a chunk copies this data.
    struct
    {
        Qgs3DRenderContext mRenderContext;
        QgsTiledSceneIndex mIndex;
        double mZValueScale = 1.0;
        double mZValueOffset = 0;
        QgsCoordinateReferenceSystem mLayerCrs;
        QgsCoordinateTransform mBoundsTransform;
    } mData;
};
 

class QgsTiledSceneLayerChunkedEntity : public QgsChunkedEntity
{
    Q_OBJECT
  public:
    explicit QgsTiledSceneLayerChunkedEntity(
      Qgs3DMapSettings *map,
      const QgsTiledSceneIndex &index,
      QgsCoordinateReferenceSystem tileCrs,
      QgsCoordinateReferenceSystem layerCrs,
      double maximumScreenError,
      bool showBoundingBoxes,
      double zValueScale,
      double zValueOffset
    );
 
    ~QgsTiledSceneLayerChunkedEntity() override;
 
    QList<QgsRayCastHit> rayIntersection( const QgsRay3D &ray, const QgsRayCastContext &context ) const override;
 
  private:
    mutable QgsTiledSceneIndex mIndex;
};

 
#endif // QGSTILEDSCENECHUNKLOADER_P_H