QGIS API Documentation 3.27.0-Master (9c08adf5ef)
qgschunkedentity_p.h
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1/***************************************************************************
2 qgschunkedentity_p.h
3 --------------------------------------
4 Date : July 2017
5 Copyright : (C) 2017 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 QGSCHUNKEDENTITY_P_H
17#define QGSCHUNKEDENTITY_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 <Qt3DCore/QEntity>
31#include <numeric>
32
33#define SIP_NO_FILE
34
35class QgsAABB;
36class QgsChunkNode;
37class QgsChunkList;
38class QgsChunkQueueJob;
39class QgsChunkLoaderFactory;
40class QgsChunkBoundsEntity;
41class QgsChunkQueueJobFactory;
42
43#include <QVector3D>
44#include <QMatrix4x4>
45
46#include <QTime>
47
48#include "qgsfeatureid.h"
49#include "qgschunknode_p.h"
50
51namespace Qt3DRender
52{
53 class QPickEvent;
54}
55
62class QgsChunkedEntity : public Qt3DCore::QEntity
63{
64 Q_OBJECT
65 public:
67 QgsChunkedEntity( float tau, QgsChunkLoaderFactory *loaderFactory, bool ownsFactory,
68 int primitivesBudget = std::numeric_limits<int>::max(),
69 Qt3DCore::QNode *parent = nullptr );
70 ~QgsChunkedEntity() override;
71
73 struct SceneState
74 {
75 QVector3D cameraPos;
76 float cameraFov;
77 int screenSizePx;
78 QMatrix4x4 viewProjectionMatrix;
79 };
80
82 void update( const SceneState &state );
83
85 bool needsUpdate() const { return mNeedsUpdate; }
86
88 void setShowBoundingBoxes( bool enabled );
89
91 void updateNodes( const QList<QgsChunkNode *> &nodes, QgsChunkQueueJobFactory *updateJobFactory );
92
94 QList<QgsChunkNode *> activeNodes() const { return mActiveNodes; }
96 QgsChunkNode *rootNode() const { return mRootNode; }
97
99 int pendingJobsCount() const;
100
102 void setPickingEnabled( bool enabled );
104 bool hasPickingEnabled() const { return mPickingEnabled; }
105
107 void setUsingAdditiveStrategy( bool additive ) { mAdditiveStrategy = additive; }
108
114 bool usingAditiveStrategy() const { return mAdditiveStrategy; }
115
120 void setGpuMemoryLimit( double gpuMemoryLimit ) { mGpuMemoryLimit = gpuMemoryLimit; }
121
126 double gpuMemoryLimit() const { return mGpuMemoryLimit; }
127
128 static double calculateEntityGpuMemorySize( Qt3DCore::QEntity *entity );
129
130 protected:
132 void cancelActiveJob( QgsChunkQueueJob *job );
133 void cancelActiveJobs();
135 void setNeedsUpdate( bool needsUpdate ) { mNeedsUpdate = needsUpdate; }
136
137 private:
138 void update( QgsChunkNode *node, const SceneState &state );
139
141 void pruneLoaderQueue( const SceneState &state );
142
144 void requestResidency( QgsChunkNode *node );
145
146 void startJobs();
147 QgsChunkQueueJob *startJob( QgsChunkNode *node );
148
149 private slots:
150 void onActiveJobFinished();
151
152 void onPickEvent( Qt3DRender::QPickEvent *event );
153
154 signals:
156 void pendingJobsCountChanged();
157
159 void newEntityCreated( Qt3DCore::QEntity *entity );
160
162 void pickedObject( Qt3DRender::QPickEvent *pickEvent, QgsFeatureId fid );
163
164 protected:
166 QgsChunkNode *mRootNode = nullptr;
168 bool mNeedsUpdate = false;
169
177 float mTau;
179 QgsChunkLoaderFactory *mChunkLoaderFactory = nullptr;
181 bool mOwnsFactory = true;
183 QgsChunkList *mChunkLoaderQueue = nullptr;
185 QgsChunkList *mReplacementQueue = nullptr;
187 QList<QgsChunkNode *> mActiveNodes;
189 int mFrustumCulled = 0;
190
191 // TODO: max. length for loading queue
192
193 QTime mCurrentTime;
194
196 QgsChunkBoundsEntity *mBboxesEntity = nullptr;
197
199 QList<QgsChunkQueueJob *> mActiveJobs;
200
202 bool mPickingEnabled = false;
203
208 bool mAdditiveStrategy = false;
209
210 bool mIsValid = true;
211
212 int mPrimitivesBudget = std::numeric_limits<int>::max();
213 double mGpuMemoryLimit = 500.0; // in megabytes
214};
215
217
218#endif // QGSCHUNKEDENTITY_P_H
3
Definition: qgsaabb.h:34
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features
Definition: qgsfeatureid.h:28