qgsterrainentity.h

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/***************************************************************************
  qgsterrainentity.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_H
#define QGSTERRAINENTITY_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.
//
 
#define SIP_NO_FILE
 
#include <memory>
 
#include "qgschunkedentity.h"
#include "qgschunkqueuejob.h"
 
namespace Qt3DCore
{
  class QTransform;
}
 
class Qgs3DMapSettings;
class QgsTerrainTextureGenerator;
class QgsCoordinateTransform;
class QgsMapLayer;
class QgsTerrainGenerator;
class TerrainMapUpdateJobFactory;

class QgsTerrainEntity : public QgsChunkedEntity
{
    Q_OBJECT
  public:
    explicit QgsTerrainEntity( Qgs3DMapSettings *map, Qt3DCore::QNode *parent = nullptr );
 
    ~QgsTerrainEntity() override;

    QgsTerrainTextureGenerator *textureGenerator() { return mTextureGenerator; }

    Qt3DCore::QTransform *transform() const { return mTerrainTransform; }
    float terrainElevationOffset() const;
 
    QList<QgsRayCastHit> rayIntersection( const QgsRay3D &ray, const QgsRayCastContext &context ) const override;
 
  private slots:
    void onShowBoundingBoxesChanged();
    void invalidateMapImages();
    void onLayersChanged();
    void onTerrainElevationOffsetChanged();
 
  private:
    void connectToLayersRepaintRequest();
 
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr;
    Qt3DCore::QTransform *mTerrainTransform = nullptr;
 
    std::unique_ptr<TerrainMapUpdateJobFactory> mUpdateJobFactory;

    QList<QgsMapLayer *> mLayers;
};
 

class TerrainMapUpdateJob : public QgsChunkQueueJob
{
    Q_OBJECT
  public:
    TerrainMapUpdateJob( QgsTerrainTextureGenerator *textureGenerator, QgsChunkNode *mNode );
 
    void start() override;
 
    void cancel() override;
 
  private slots:
    void onTileReady( int jobId, const QImage &image );
 
  private:
    QgsTerrainTextureGenerator *mTextureGenerator = nullptr;
    int mJobId = -1;
};

 
#endif // QGSTERRAINENTITY_H