qgs3dutils.h

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/***************************************************************************
  qgs3dutils.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 QGS3DUTILS_H
#define QGS3DUTILS_H

#include "qgis_sip.h"

class QgsLineString;
class QgsPolygon;

class QgsAbstract3DEngine;
class QgsAbstract3DSymbol;
class Qgs3DMapScene;

namespace Qt3DExtras
{
  class QPhongMaterial;
}

#include "qgs3dmapsettings.h"
#include "qgs3dtypes.h"
#include "qgsaabb.h"

#include <memory>

#ifndef SIP_RUN

class _3D_EXPORT Qgs3DUtils
{
  public:

    static QImage captureSceneImage( QgsAbstract3DEngine &engine, Qgs3DMapScene *scene );

    static int maxZoomLevel( double tile0width, double tileResolution, double maxError );

    static QString altClampingToString( Qgs3DTypes::AltitudeClamping altClamp );
    static Qgs3DTypes::AltitudeClamping altClampingFromString( const QString &str );

    static QString altBindingToString( Qgs3DTypes::AltitudeBinding altBind );
    static Qgs3DTypes::AltitudeBinding altBindingFromString( const QString &str );

    static QString cullingModeToString( Qgs3DTypes::CullingMode mode );
    static Qgs3DTypes::CullingMode cullingModeFromString( const QString &str );

    static float clampAltitude( const QgsPoint &p, Qgs3DTypes::AltitudeClamping altClamp, Qgs3DTypes::AltitudeBinding altBind, float height, const QgsPoint &centroid, const Qgs3DMapSettings &map );
    static void clampAltitudes( QgsLineString *lineString, Qgs3DTypes::AltitudeClamping altClamp, Qgs3DTypes::AltitudeBinding altBind, const QgsPoint &centroid, float height, const Qgs3DMapSettings &map );
    static bool clampAltitudes( QgsPolygon *polygon, Qgs3DTypes::AltitudeClamping altClamp, Qgs3DTypes::AltitudeBinding altBind, float height, const Qgs3DMapSettings &map );

    static QString matrix4x4toString( const QMatrix4x4 &m );
    static QMatrix4x4 stringToMatrix4x4( const QString &str );

    static void extractPointPositions( QgsFeature &f, const Qgs3DMapSettings &map, Qgs3DTypes::AltitudeClamping altClamp, QVector<QVector3D> &positions );

    static bool isCullable( const QgsAABB &bbox, const QMatrix4x4 &viewProjectionMatrix );

    static QgsVector3D mapToWorldCoordinates( const QgsVector3D &mapCoords, const QgsVector3D &origin );
    static QgsVector3D worldToMapCoordinates( const QgsVector3D &worldCoords, const QgsVector3D &origin );

    static QgsVector3D transformWorldCoordinates( const QgsVector3D &worldPoint1, const QgsVector3D &origin1, const QgsCoordinateReferenceSystem &crs1, const QgsVector3D &origin2, const QgsCoordinateReferenceSystem &crs2,
        const QgsCoordinateTransformContext &context );

    static std::unique_ptr<QgsAbstract3DSymbol> symbolForGeometryType( QgsWkbTypes::GeometryType geomType );

    static QgsExpressionContext globalProjectLayerExpressionContext( QgsVectorLayer *layer );

    static Qt3DExtras::QPhongMaterial *phongMaterial( const QgsPhongMaterialSettings &settings );
};

#endif

#endif // QGS3DUTILS_H