qgspointcloudlayerchunkloader_p.h

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/***************************************************************************
  qgspointcloudlayerchunkloader_p.h
  --------------------------------------
  Date                 : October 2020
  Copyright            : (C) 2020 by Peter Petrik
  Email                : zilolv 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 QGSPOINTCLOUDLAYERCHUNKLOADER_P_H
#define QGSPOINTCLOUDLAYERCHUNKLOADER_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 "qgschunkloader_p.h"
#include "qgschunkedentity_p.h"
#include "qgspointcloud3dsymbol.h"
#include "qgspointcloud3dsymbol_p.h"
#include "qgspointcloudlayer3drenderer.h"
 
#include <memory>
 
#include <QFutureWatcher>
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
#include <Qt3DRender/QGeometry>
#include <Qt3DRender/QBuffer>
#else
#include <Qt3DCore/QGeometry>
#include <Qt3DCore/QBuffer>
#endif
#include <Qt3DRender/QMaterial>
#include <QVector3D>
 
#define SIP_NO_FILE
 
class QgsPointCloudLayerChunkLoaderFactory : public QgsChunkLoaderFactory
{
    Q_OBJECT
 
  public:
 
    QgsPointCloudLayerChunkLoaderFactory( const Qgs3DRenderContext &context, const QgsCoordinateTransform &coordinateTransform, QgsPointCloudIndex *pc, QgsPointCloud3DSymbol *symbol,
                                          double zValueScale, double zValueOffset, int pointBudget );
 
    virtual QgsChunkLoader *createChunkLoader( QgsChunkNode *node ) const override;
    virtual QgsChunkNode *createRootNode() const override;
    virtual QVector<QgsChunkNode *> createChildren( QgsChunkNode *node ) const override;
    virtual int primitivesCount( QgsChunkNode *node ) const override;
    Qgs3DRenderContext mRenderContext;
    QgsCoordinateTransform mCoordinateTransform;
    QgsPointCloudIndex *mPointCloudIndex;
    std::unique_ptr< QgsPointCloud3DSymbol > mSymbol;
    double mZValueScale = 1.0;
    double mZValueOffset = 0;
    int mPointBudget = 1000000;
    bool mTriangulate = false;
    QgsRectangle mExtent; 
};
 
 
class QgsPointCloudLayerChunkLoader : public QgsChunkLoader
{
    Q_OBJECT
 
  public:
 
    QgsPointCloudLayerChunkLoader( const QgsPointCloudLayerChunkLoaderFactory *factory, QgsChunkNode *node, std::unique_ptr< QgsPointCloud3DSymbol > symbol,
                                   const QgsCoordinateTransform &coordinateTransform, double zValueScale, double zValueOffset );
    ~QgsPointCloudLayerChunkLoader() override;
 
    virtual void cancel() override;
    virtual Qt3DCore::QEntity *createEntity( Qt3DCore::QEntity *parent ) override;
 
  private:
    const QgsPointCloudLayerChunkLoaderFactory *mFactory;
    std::unique_ptr<QgsPointCloud3DSymbolHandler> mHandler;
    QgsPointCloud3DRenderContext mContext;
    QFutureWatcher<void> *mFutureWatcher = nullptr;
};
 
 
class QgsPointCloudLayerChunkedEntity : public QgsChunkedEntity
{
    Q_OBJECT
  public:
    explicit QgsPointCloudLayerChunkedEntity( Qgs3DMapSettings *map, QgsPointCloudIndex *pc, const QgsCoordinateTransform &coordinateTransform, QgsPointCloud3DSymbol *symbol, float maxScreenError, bool showBoundingBoxes,
        double zValueScale, double zValueOffset, int pointBudget );
 
    QVector<QgsRayCastingUtils::RayHit> rayIntersection( const QgsRayCastingUtils::Ray3D &ray, const QgsRayCastingUtils::RayCastContext &context ) const override;
 
    ~QgsPointCloudLayerChunkedEntity();
};
 
 
#endif // QGSPOINTCLOUDLAYERCHUNKLOADER_P_H