QGIS API Documentation 3.39.0-Master (73c886ac97c)
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qgsvectorlayerchunkloader_p.h
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1/***************************************************************************
2 qgsvectorlayerchunkloader_p.h
3 --------------------------------------
4 Date : July 2019
5 Copyright : (C) 2019 by Martin Dobias
6 Email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSVECTORLAYERCHUNKLOADER_P_H
17#define QGSVECTORLAYERCHUNKLOADER_P_H
18
20
21//
22// W A R N I N G
23// -------------
24//
25// This file is not part of the QGIS API. It exists purely as an
26// implementation detail. This header file may change from version to
27// version without notice, or even be removed.
28//
29
30#include "qgschunkloader_p.h"
32#include "qgschunkedentity_p.h"
33
34#define SIP_NO_FILE
35
37class QgsVectorLayer;
41class QgsFeature3DHandler;
42
43namespace Qt3DCore
44{
45 class QTransform;
46}
47
48#include <QFutureWatcher>
49
50
58class QgsVectorLayerChunkLoaderFactory : public QgsQuadtreeChunkLoaderFactory
59{
60 Q_OBJECT
61
62 public:
64 QgsVectorLayerChunkLoaderFactory( const Qgs3DMapSettings &map, QgsVectorLayer *vl, QgsAbstract3DSymbol *symbol, int leafLevel, double zMin, double zMax );
65
67 virtual QgsChunkLoader *createChunkLoader( QgsChunkNode *node ) const override;
68
69 const Qgs3DMapSettings &mMap;
70 QgsVectorLayer *mLayer;
71 std::unique_ptr<QgsAbstract3DSymbol> mSymbol;
72 int mLeafLevel;
73};
74
75
84class QgsVectorLayerChunkLoader : public QgsChunkLoader
85{
86 Q_OBJECT
87
88 public:
90 QgsVectorLayerChunkLoader( const QgsVectorLayerChunkLoaderFactory *factory, QgsChunkNode *node );
91 ~QgsVectorLayerChunkLoader() override;
92
93 virtual void cancel() override;
94 virtual Qt3DCore::QEntity *createEntity( Qt3DCore::QEntity *parent ) override;
95
96 private:
97 const QgsVectorLayerChunkLoaderFactory *mFactory;
98 std::unique_ptr<QgsFeature3DHandler> mHandler;
99 Qgs3DRenderContext mContext;
100 std::unique_ptr<QgsVectorLayerFeatureSource> mSource;
101 bool mCanceled = false;
102 QFutureWatcher<void> *mFutureWatcher = nullptr;
103 QString mLayerName;
104};
105
106
117class QgsVectorLayerChunkedEntity : public QgsChunkedEntity
118{
119 Q_OBJECT
120 public:
122 explicit QgsVectorLayerChunkedEntity( QgsVectorLayer *vl, double zMin, double zMax, const QgsVectorLayer3DTilingSettings &tilingSettings, QgsAbstract3DSymbol *symbol, const Qgs3DMapSettings &map );
123
124 QVector<QgsRayCastingUtils::RayHit> rayIntersection( const QgsRayCastingUtils::Ray3D &ray, const QgsRayCastingUtils::RayCastContext &context ) const override;
125
126 ~QgsVectorLayerChunkedEntity();
127 private slots:
128 void onTerrainElevationOffsetChanged( float newOffset );
129
130 private:
131 friend class QgsRuleBasedChunkedEntity;
133 static QVector<QgsRayCastingUtils::RayHit> rayIntersection( const QList<QgsChunkNode *> &activeNodes, const QMatrix4x4 &transformMatrix, const QgsRayCastingUtils::Ray3D &ray, const QgsRayCastingUtils::RayCastContext &context );
134
135 Qt3DCore::QTransform *mTransform = nullptr;
136
137 bool applyTerrainOffset() const;
138};
139
141
142#endif // QGSVECTORLAYERCHUNKLOADER_P_H
Partial snapshot of vector layer's state (only the members necessary for access to features)
Represents a vector layer which manages a vector based data sets.
Helper struct to store ray casting parameters.