qgsdemterraingenerator.h

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/***************************************************************************
  qgsdemterraingenerator.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 QGSDEMTERRAINGENERATOR_H
#define QGSDEMTERRAINGENERATOR_H
 
#include "qgis_3d.h"
#include "qgscoordinatetransformcontext.h"
#include "qgsrasterlayer.h"
#include "qgsterraingenerator.h"
 
#define SIP_NO_FILE
 
class QgsDemHeightMapGenerator;
 

class _3D_EXPORT QgsDemTerrainGenerator : public QgsTerrainGenerator
{
    Q_OBJECT
 
  public:
    static QgsTerrainGenerator *create() SIP_FACTORY;
 
    QgsDemTerrainGenerator();
    ~QgsDemTerrainGenerator() override;

    void setLayer( QgsRasterLayer *layer );
    QgsRasterLayer *layer() const;
 
    void setCrs( const QgsCoordinateReferenceSystem &crs, const QgsCoordinateTransformContext &context ) override;
    QgsCoordinateReferenceSystem crs() const override { return mCrs; }

    void setResolution( int resolution )
    {
      mResolution = resolution;
      updateGenerator();
    }

    int resolution() const { return mResolution; }

    void setSkirtHeight( float skirtHeight ) { mSkirtHeight = skirtHeight; }
    float skirtHeight() const { return mSkirtHeight; }

    QgsDemHeightMapGenerator *heightMapGenerator() { return mHeightMapGenerator.get(); }
 
    QgsTerrainGenerator *clone() const override SIP_FACTORY;
    Type type() const override;
    QgsRectangle rootChunkExtent() const override;
    void setExtent( const QgsRectangle &extent ) override;
    float heightAt( double x, double y, const Qgs3DRenderContext &context ) const override;
 
    QFuture<QgsChunkLoaderResult> loadChunk( QgsChunkNode *node ) override;
 
    QgsTerrainGenerator::Capabilities capabilities() const override;
 
  protected:
    virtual void updateGenerator();
 
    std::unique_ptr<QgsDemHeightMapGenerator> mHeightMapGenerator;
 
    QgsCoordinateReferenceSystem mCrs;
 
    QgsCoordinateTransformContext mTransformContext;

    QPointer<QgsRasterLayer> mLayer;
    int mResolution = 16;
    float mSkirtHeight = 10.f;
 
  private:
    Qt3DCore::QEntity *createEntity( QByteArray heightMap, TerrainTextureResources textureResources, QgsChunkNode *node, Qt3DCore::QEntity *parent );
};
 
 
#endif // QGSDEMTERRAINGENERATOR_H