qgsfeature3dhandler_p.h

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/***************************************************************************
  qgsfeature3dhandler_p.h
  --------------------------------------
  Date                 : January 2019
  Copyright            : (C) 2019 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 QGSFEATURE3DHANDLER_P_H
#define QGSFEATURE3DHANDLER_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 <Qt3DCore/QEntity>

class QgsFeature;


#include "qgsexpressioncontext.h"

class Qgs3DMapSettings;


class Qgs3DRenderContext
{
  public:
    Qgs3DRenderContext( const Qgs3DMapSettings &map ) : mMap( map ) {}

    const Qgs3DMapSettings &map() const { return mMap; }

    void setExpressionContext( const QgsExpressionContext &context ) { mExpressionContext = context; }

    QgsExpressionContext &expressionContext() { return mExpressionContext; }

    const QgsExpressionContext &expressionContext() const { return mExpressionContext; } SIP_SKIP

  private:
    const Qgs3DMapSettings &mMap;
    QgsExpressionContext mExpressionContext;

};


class QgsFeature3DHandler
{
  public:
    virtual ~QgsFeature3DHandler() = default;

    virtual bool prepare( const Qgs3DRenderContext &context, QSet<QString> &attributeNames ) = 0;

    virtual void processFeature( QgsFeature &feature, const Qgs3DRenderContext &context ) = 0;

    virtual void finalize( Qt3DCore::QEntity *parent, const Qgs3DRenderContext &context ) = 0;
};


class Qgs3DMapSettings;
class QgsVectorLayer;

namespace Qgs3DSymbolImpl
{
  Qt3DCore::QEntity *entityFromHandler( QgsFeature3DHandler *handler, const Qgs3DMapSettings &map, QgsVectorLayer *layer );
}



#endif // QGSFEATURE3DHANDLER_P_H