qgsvectortilemvtencoder.h

Go to the documentation of this file.

/***************************************************************************
  qgsvectortilemvtencoder.h
  --------------------------------------
  Date                 : April 2020
  Copyright            : (C) 2020 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 QGSVECTORTILEMVTENCODER_H
#define QGSVECTORTILEMVTENCODER_H
 
 
#include "qgscoordinatetransform.h"
#include "qgstiles.h"
#include "qgsvectortilerenderer.h"
#include "vector_tile.pb.h"
 
#define SIP_NO_FILE

class CORE_EXPORT QgsVectorTileMVTEncoder
{
  public:
    explicit QgsVectorTileMVTEncoder( QgsTileXYZ tileID );

    explicit QgsVectorTileMVTEncoder( QgsTileXYZ tileID, const QgsTileMatrix &tileMatrix );

    int resolution() const { return mResolution; }
    void setResolution( int extent ) { mResolution = extent; }

    int tileBuffer() const { return mBuffer; }
    void setTileBuffer( int buffer ) { mBuffer = buffer; }

    void setTransformContext( const QgsCoordinateTransformContext &transformContext ) { mTransformContext = transformContext; }

    void addLayer( QgsVectorLayer *layer, QgsFeedback *feedback = nullptr, QString filterExpression = QString(), QString layerName = QString() );

    QByteArray encode() const;
 
  private:
    void addFeature( vector_tile::Tile_Layer *tileLayer, const QgsFeature &f );
 
  private:
    QgsTileXYZ mTileID;
    int mResolution = 4096;
    int mBuffer = 256;
    QgsCoordinateTransformContext mTransformContext;
 
    QgsRectangle mTileExtent;
    QgsCoordinateReferenceSystem mCrs;
 
    QgsVectorTileFeatures mFeatures;
 
    vector_tile::Tile tile;
 
    QMap<QVariant, int> mKnownValues;
};
 
#endif // QGSVECTORTILEMVTENCODER_H