qgsterrainentity_p.h

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/***************************************************************************
  qgsterrainentity_p.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 QGSTERRAINENTITY_P_H
#define QGSTERRAINENTITY_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 "qgschunkedentity_p.h"
#include "qgschunkqueuejob_p.h"

#include <memory>

namespace Qt3DRender
{
  class QObjectPicker;
}

namespace QgsRayCastingUtils
{
  class Ray3D;
}

class Qgs3DMapSettings;
class QgsTerrainTextureGenerator;
class QgsCoordinateTransform;
class QgsMapLayer;
class QgsTerrainGenerator;
class TerrainMapUpdateJobFactory;

class QgsTerrainEntity : public QgsChunkedEntity
{
    Q_OBJECT
  public:
    explicit QgsTerrainEntity( int maxLevel, const Qgs3DMapSettings &map, Qt3DCore::QNode *parent = nullptr );

    ~QgsTerrainEntity() override;

    const Qgs3DMapSettings &map3D() const { return mMap; }
    QgsTerrainTextureGenerator *textureGenerator() { return mTextureGenerator; }
    const QgsCoordinateTransform &terrainToMapTransform() const { return *mTerrainToMapTransform; }

    Qt3DRender::QObjectPicker *terrainPicker() const { return mTerrainPicker; }

    bool rayIntersection( const QgsRayCastingUtils::Ray3D &ray, QVector3D &intersectionPoint );

  private slots:
    void onShowBoundingBoxesChanged();
    void invalidateMapImages();
    void onLayersChanged();

  private:

    void connectToLayersRepaintRequest();

    const Qgs3DMapSettings &mMap;
    Qt3DRender::QObjectPicker *mTerrainPicker = nullptr;
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr;
    QgsCoordinateTransform *mTerrainToMapTransform = nullptr;

    std::unique_ptr<TerrainMapUpdateJobFactory> mUpdateJobFactory;

    QList<QgsMapLayer *> mLayers;
};



class TerrainMapUpdateJob : public QgsChunkQueueJob
{
    Q_OBJECT
  public:
    TerrainMapUpdateJob( QgsTerrainTextureGenerator *textureGenerator, QgsChunkNode *mNode );

    void cancel() override;

  private slots:
    void onTileReady( int jobId, const QImage &image );

  private:
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr;
    int mJobId;
};


#endif // QGSTERRAINENTITY_P_H