qgs3drendercontext.h

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/***************************************************************************
  qgs3drendercontext.h
  --------------------------------------
  Date                 : August 2024
  Copyright            : (C) 2024 by Nyall Dawson
  Email                : nyall dot dawson 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 QGS3DRENDERCONTEXT_H
#define QGS3DRENDERCONTEXT_H
 
#include "qgis_3d.h"
#include "qgsvector3d.h"
#include "qgsrectangle.h"
#include "qgsrange.h"
#include "qgscoordinatereferencesystem.h"
#include "qgscoordinatetransformcontext.h"
#include "qgsexpressioncontext.h"
 
#include <QColor>
 
class QgsTerrainGenerator;
class Qgs3DMapSettings;
 
#define SIP_NO_FILE
 
class _3D_EXPORT Qgs3DRenderContext
{
 
  public:
 
    Qgs3DRenderContext() = default;
 
    static Qgs3DRenderContext fromMapSettings( const Qgs3DMapSettings *mapSettings );
 
    QgsCoordinateReferenceSystem crs() const { return mCrs; }
 
    QgsCoordinateTransformContext transformContext() const { return mTransformContext; }
 
    QgsRectangle extent() const { return mExtent; }
 
    QgsVector3D origin() const { return mOrigin; }
 
    const QgsDateTimeRange &temporalRange() const { return mTemporalRange; }
 
    QColor selectionColor() const { return mSelectionColor; }
 
    double outputDpi() const { return mDpi; }
 
    float fieldOfView() const { return mFieldOfView; }
 
    QgsVector3D mapToWorldCoordinates( const QgsVector3D &mapCoords ) const;
 
    QgsVector3D worldToMapCoordinates( const QgsVector3D &worldCoords ) const;
 
    bool terrainRenderingEnabled() const { return mTerrainRenderingEnabled; }
 
    double terrainVerticalScale() const { return mTerrainVerticalScale; }
 
    QgsTerrainGenerator *terrainGenerator() const { return mTerrainGenerator; }
 
    void setExpressionContext( const QgsExpressionContext &context ) { mExpressionContext = context; }
 
    QgsExpressionContext &expressionContext() { return mExpressionContext; }
 
    const QgsExpressionContext &expressionContext() const { return mExpressionContext; } SIP_SKIP
 
  private:
    QgsCoordinateReferenceSystem mCrs;   
    QgsCoordinateTransformContext mTransformContext;
    QgsVector3D mOrigin;
    QgsRectangle mExtent; 
    QgsDateTimeRange mTemporalRange;
    QColor mSelectionColor; 
    double mDpi = 96;  
    float mFieldOfView = 45.0f; 
    bool mTerrainRenderingEnabled = true;
    double mTerrainVerticalScale = 1;   
 
    QgsExpressionContext mExpressionContext;
 
    // not owned, currently a pointer to the Qgs3DMapSettings terrain generator.
    // TODO -- fix during implementation of https://github.com/qgis/QGIS-Enhancement-Proposals/issues/301
    QgsTerrainGenerator *mTerrainGenerator = nullptr;  
};
 
 
#endif // QGS3DRENDERCONTEXT_H