QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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qgspointcloud3dsymbol_p.cpp
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1/***************************************************************************
2 qgspointcloud3dsymbol_p.cpp
3 ------------------------------
4 Date : December 2020
5 Copyright : (C) 2020 by Nedjima Belgacem
6 Email : belgacem dot nedjima 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#include "qgspointcloud3dsymbol_p.h"
17
19
20#include "qgspointcloud3dsymbol.h"
21#include "qgspointcloudattribute.h"
22#include "qgspointcloudrequest.h"
23#include "qgs3dmapsettings.h"
24#include "qgspointcloudindex.h"
25#include "qgspointcloudblockrequest.h"
26#include "qgsfeedback.h"
27
28#include <Qt3DRender/QGeometryRenderer>
29#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
30#include <Qt3DRender/QAttribute>
31#include <Qt3DRender/QBuffer>
32#include <Qt3DRender/QGeometry>
33
34typedef Qt3DRender::QAttribute Qt3DQAttribute;
35typedef Qt3DRender::QBuffer Qt3DQBuffer;
36typedef Qt3DRender::QGeometry Qt3DQGeometry;
37#else
38#include <Qt3DCore/QAttribute>
39#include <Qt3DCore/QBuffer>
40#include <Qt3DCore/QGeometry>
41
42typedef Qt3DCore::QAttribute Qt3DQAttribute;
43typedef Qt3DCore::QBuffer Qt3DQBuffer;
44typedef Qt3DCore::QGeometry Qt3DQGeometry;
45#endif
46#include <Qt3DRender/QTechnique>
47#include <Qt3DRender/QShaderProgram>
48#include <Qt3DRender/QGraphicsApiFilter>
49#include <Qt3DRender/QEffect>
50#include <QPointSize>
51#include <QUrl>
52
53#include <delaunator.hpp>
54
55QgsPointCloud3DGeometry::QgsPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
56 : Qt3DQGeometry( parent )
57 , mPositionAttribute( new Qt3DQAttribute( this ) )
58 , mParameterAttribute( new Qt3DQAttribute( this ) )
59 , mColorAttribute( new Qt3DQAttribute( this ) )
60 , mTriangleIndexAttribute( new Qt3DQAttribute( this ) )
61 , mNormalsAttribute( new Qt3DQAttribute( this ) )
62 , mVertexBuffer( new Qt3DQBuffer( this ) )
63 , mByteStride( byteStride )
64{
65 if ( !data.triangles.isEmpty() )
66 {
67 mTriangleBuffer = new Qt3DQBuffer( this );
68 mTriangleIndexAttribute->setAttributeType( Qt3DQAttribute::IndexAttribute );
69 mTriangleIndexAttribute->setBuffer( mTriangleBuffer );
70 mTriangleIndexAttribute->setVertexBaseType( Qt3DQAttribute::UnsignedInt );
71 mTriangleBuffer->setData( data.triangles );
72 mTriangleIndexAttribute->setCount( data.triangles.size() / sizeof( quint32 ) );
73 addAttribute( mTriangleIndexAttribute );
74 }
75
76 if ( !data.normals.isEmpty() )
77 {
78 mNormalsBuffer = new Qt3DQBuffer( this );
79 mNormalsAttribute->setName( Qt3DQAttribute::defaultNormalAttributeName() );
80 mNormalsAttribute->setVertexBaseType( Qt3DQAttribute::Float );
81 mNormalsAttribute->setVertexSize( 3 );
82 mNormalsAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
83 mNormalsAttribute->setBuffer( mNormalsBuffer );
84 mNormalsBuffer->setData( data.normals );
85 mNormalsAttribute->setCount( data.normals.size() / ( 3 * sizeof( float ) ) );
86 addAttribute( mNormalsAttribute );
87 }
88}
89
90QgsSingleColorPointCloud3DGeometry::QgsSingleColorPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
91 : QgsPointCloud3DGeometry( parent, data, byteStride )
92{
93 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
94 mPositionAttribute->setBuffer( mVertexBuffer );
95 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
96 mPositionAttribute->setVertexSize( 3 );
97 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
98 mPositionAttribute->setByteOffset( 0 );
99 mPositionAttribute->setByteStride( mByteStride );
100 addAttribute( mPositionAttribute );
101 makeVertexBuffer( data );
102}
103
104void QgsSingleColorPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
105{
106 QByteArray vertexBufferData;
107 vertexBufferData.resize( data.positions.size() * mByteStride );
108 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
109 int idx = 0;
110 for ( int i = 0; i < data.positions.size(); ++i )
111 {
112 rawVertexArray[idx++] = data.positions.at( i ).x();
113 rawVertexArray[idx++] = data.positions.at( i ).y();
114 rawVertexArray[idx++] = data.positions.at( i ).z();
115 }
116
117 mVertexCount = data.positions.size();
118 mVertexBuffer->setData( vertexBufferData );
119}
120
121QgsColorRampPointCloud3DGeometry::QgsColorRampPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
122 : QgsPointCloud3DGeometry( parent, data, byteStride )
123{
124 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
125 mPositionAttribute->setBuffer( mVertexBuffer );
126 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
127 mPositionAttribute->setVertexSize( 3 );
128 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
129 mPositionAttribute->setByteOffset( 0 );
130 mPositionAttribute->setByteStride( mByteStride );
131 addAttribute( mPositionAttribute );
132 mParameterAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
133 mParameterAttribute->setBuffer( mVertexBuffer );
134 mParameterAttribute->setVertexBaseType( Qt3DQAttribute::Float );
135 mParameterAttribute->setVertexSize( 1 );
136 mParameterAttribute->setName( "vertexParameter" );
137 mParameterAttribute->setByteOffset( 12 );
138 mParameterAttribute->setByteStride( mByteStride );
139 addAttribute( mParameterAttribute );
140 makeVertexBuffer( data );
141}
142
143void QgsColorRampPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
144{
145 QByteArray vertexBufferData;
146 vertexBufferData.resize( data.positions.size() * mByteStride );
147 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
148 int idx = 0;
149 Q_ASSERT( data.positions.size() == data.parameter.size() );
150 for ( int i = 0; i < data.positions.size(); ++i )
151 {
152 rawVertexArray[idx++] = data.positions.at( i ).x();
153 rawVertexArray[idx++] = data.positions.at( i ).y();
154 rawVertexArray[idx++] = data.positions.at( i ).z();
155 rawVertexArray[idx++] = data.parameter.at( i );
156 }
157
158 mVertexCount = data.positions.size();
159 mVertexBuffer->setData( vertexBufferData );
160}
161
162QgsRGBPointCloud3DGeometry::QgsRGBPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
163 : QgsPointCloud3DGeometry( parent, data, byteStride )
164{
165 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
166 mPositionAttribute->setBuffer( mVertexBuffer );
167 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
168 mPositionAttribute->setVertexSize( 3 );
169 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
170 mPositionAttribute->setByteOffset( 0 );
171 mPositionAttribute->setByteStride( mByteStride );
172 addAttribute( mPositionAttribute );
173 mColorAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
174 mColorAttribute->setBuffer( mVertexBuffer );
175 mColorAttribute->setVertexBaseType( Qt3DQAttribute::Float );
176 mColorAttribute->setVertexSize( 3 );
177 mColorAttribute->setName( QStringLiteral( "vertexColor" ) );
178 mColorAttribute->setByteOffset( 12 );
179 mColorAttribute->setByteStride( mByteStride );
180 addAttribute( mColorAttribute );
181 makeVertexBuffer( data );
182}
183
184void QgsRGBPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
185{
186 QByteArray vertexBufferData;
187 vertexBufferData.resize( data.positions.size() * mByteStride );
188 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
189 int idx = 0;
190 Q_ASSERT( data.positions.size() == data.colors.size() );
191 for ( int i = 0; i < data.positions.size(); ++i )
192 {
193 rawVertexArray[idx++] = data.positions.at( i ).x();
194 rawVertexArray[idx++] = data.positions.at( i ).y();
195 rawVertexArray[idx++] = data.positions.at( i ).z();
196 rawVertexArray[idx++] = data.colors.at( i ).x();
197 rawVertexArray[idx++] = data.colors.at( i ).y();
198 rawVertexArray[idx++] = data.colors.at( i ).z();
199 }
200 mVertexCount = data.positions.size();
201 mVertexBuffer->setData( vertexBufferData );
202}
203
204QgsPointCloud3DSymbolHandler::QgsPointCloud3DSymbolHandler()
205{
206}
207
208
209void QgsPointCloud3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context, const QgsPointCloud3DSymbolHandler::PointData &out, bool selected )
210{
211 Q_UNUSED( selected )
212
213 if ( out.positions.empty() )
214 return;
215
216 // Geometry
217 Qt3DQGeometry *geom = makeGeometry( parent, out, context.symbol()->byteStride() );
218 Qt3DRender::QGeometryRenderer *gr = new Qt3DRender::QGeometryRenderer;
219 if ( context.symbol()->renderAsTriangles() && ! out.triangles.isEmpty() )
220 {
221 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Triangles );
222 gr->setVertexCount( out.triangles.size() / sizeof( quint32 ) );
223 }
224 else
225 {
226 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Points );
227 gr->setVertexCount( out.positions.count() );
228 }
229 gr->setGeometry( geom );
230
231 // Transform
232 Qt3DCore::QTransform *tr = new Qt3DCore::QTransform;
233
234 // Material
235 Qt3DRender::QMaterial *mat = new Qt3DRender::QMaterial;
236 if ( context.symbol() )
237 context.symbol()->fillMaterial( mat );
238
239 Qt3DRender::QShaderProgram *shaderProgram = new Qt3DRender::QShaderProgram( mat );
240 shaderProgram->setVertexShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.vert" ) ) ) );
241 shaderProgram->setFragmentShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.frag" ) ) ) );
242
243 Qt3DRender::QRenderPass *renderPass = new Qt3DRender::QRenderPass( mat );
244 renderPass->setShaderProgram( shaderProgram );
245
246 if ( out.triangles.isEmpty() )
247 {
248 Qt3DRender::QPointSize *pointSize = new Qt3DRender::QPointSize( renderPass );
249 pointSize->setSizeMode( Qt3DRender::QPointSize::Programmable ); // supported since OpenGL 3.2
250 pointSize->setValue( context.symbol() ? context.symbol()->pointSize() : 1.0f );
251 renderPass->addRenderState( pointSize );
252 }
253
254 // without this filter the default forward renderer would not render this
255 Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
256 filterKey->setName( QStringLiteral( "renderingStyle" ) );
257 filterKey->setValue( "forward" );
258
259 Qt3DRender::QTechnique *technique = new Qt3DRender::QTechnique;
260 technique->addRenderPass( renderPass );
261 technique->addFilterKey( filterKey );
262 technique->graphicsApiFilter()->setApi( Qt3DRender::QGraphicsApiFilter::OpenGL );
263 technique->graphicsApiFilter()->setProfile( Qt3DRender::QGraphicsApiFilter::CoreProfile );
264 technique->graphicsApiFilter()->setMajorVersion( 3 );
265 technique->graphicsApiFilter()->setMinorVersion( 1 );
266 technique->addParameter( new Qt3DRender::QParameter( "triangulate", !out.triangles.isEmpty() ) );
267
268 Qt3DRender::QEffect *eff = new Qt3DRender::QEffect;
269 eff->addTechnique( technique );
270 mat->setEffect( eff );
271
272 // All together
273 Qt3DCore::QEntity *entity = new Qt3DCore::QEntity;
274 entity->addComponent( gr );
275 entity->addComponent( tr );
276 entity->addComponent( mat );
277 entity->setParent( parent );
278 // cppcheck wrongly believes entity will leak
279 // cppcheck-suppress memleak
280}
281
282
283std::vector<double> QgsPointCloud3DSymbolHandler::getVertices( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, const QgsAABB &bbox )
284{
285
286 bool hasColorData = !outNormal.colors.empty();
287 bool hasParameterData = !outNormal.parameter.empty();
288
289 // first, get the points of the concerned node
290 std::vector<double> vertices( outNormal.positions.size() * 2 );
291 size_t idx = 0;
292 for ( int i = 0; i < outNormal.positions.size(); ++i )
293 {
294 vertices[idx++] = outNormal.positions.at( i ).x();
295 vertices[idx++] = outNormal.positions.at( i ).z();
296 }
297
298 // next, we also need all points of all parents nodes to make the triangulation (also external points)
299 IndexedPointCloudNode parentNode = n.parentNode();
300
301 int properPointsCount = outNormal.positions.count();
302 while ( parentNode.d() >= 0 )
303 {
304 processNode( pc, parentNode, context );
305 parentNode = parentNode.parentNode();
306 }
307
308 PointData filteredExtraPointData;
309
310 double span = pc->span();
311 //factor to take account of the density of the point to calculate extension of the bounding box
312 // with a usual value span = 128, bounding box is extended by 12.5 % on each side.
313 double extraBoxFactor = 16 / span;
314 double extraX = extraBoxFactor * bbox.xExtent();
315 double extraZ = extraBoxFactor * bbox.zExtent();
316
317 // We keep all points in vertical direction to avoid odd triangulation if points are isolated on top
318 const QgsAABB extendedBBox( bbox.xMin - extraX, -std::numeric_limits<float>::max(), bbox.zMin - extraZ, bbox.xMax + extraX, std::numeric_limits<float>::max(), bbox.zMax + extraZ );
319
320 for ( int i = properPointsCount; i < outNormal.positions.count(); ++i )
321 {
322 const QVector3D pos = outNormal.positions.at( i );
323 if ( extendedBBox.intersects( pos.x(), pos.y(), pos.z() ) )
324 {
325 filteredExtraPointData.positions.append( pos );
326 vertices.push_back( pos.x() );
327 vertices.push_back( pos.z() );
328
329 if ( hasColorData )
330 filteredExtraPointData.colors.append( outNormal.colors.at( i ) );
331 if ( hasParameterData )
332 filteredExtraPointData.parameter.append( outNormal.parameter.at( i ) );
333 }
334 }
335
336 outNormal.positions.resize( properPointsCount );
337 if ( hasColorData )
338 outNormal.colors.resize( properPointsCount );
339 if ( hasParameterData )
340 outNormal.parameter.resize( properPointsCount );
341
342 outNormal.positions.append( filteredExtraPointData.positions );
343 outNormal.colors.append( filteredExtraPointData.colors );
344 outNormal.parameter.append( filteredExtraPointData.parameter );
345
346 return vertices;
347}
348
349void QgsPointCloud3DSymbolHandler::calculateNormals( const std::vector<size_t> &triangles )
350{
351 QVector<QVector3D> normals( outNormal.positions.count(), QVector3D( 0.0, 0.0, 0.0 ) );
352 for ( size_t i = 0; i < triangles.size(); i += 3 )
353 {
354 QVector<QVector3D> triangleVertices( 3 );
355 for ( size_t j = 0; j < 3; ++j )
356 {
357 size_t vertIndex = triangles.at( i + j );
358 triangleVertices[j] = outNormal.positions.at( vertIndex );
359 }
360 //calculate normals
361 for ( size_t j = 0; j < 3; ++j )
362 normals[triangles.at( i + j )] += QVector3D::crossProduct(
363 triangleVertices.at( 1 ) - triangleVertices.at( 0 ),
364 triangleVertices.at( 2 ) - triangleVertices.at( 0 ) );
365 }
366
367 // Build now normals array
368 outNormal.normals.resize( ( outNormal.positions.count() ) * sizeof( float ) * 3 );
369 float *normPtr = reinterpret_cast<float *>( outNormal.normals.data() );
370 for ( int i = 0; i < normals.size(); ++i )
371 {
372 QVector3D normal = normals.at( i );
373 normal = normal.normalized();
374
375 *normPtr++ = normal.x();
376 *normPtr++ = normal.y();
377 *normPtr++ = normal.z();
378 }
379}
380
381void QgsPointCloud3DSymbolHandler::filterTriangles( const std::vector<size_t> &triangleIndexes, const QgsPointCloud3DRenderContext &context, const QgsAABB &bbox )
382{
383 outNormal.triangles.resize( triangleIndexes.size() * sizeof( quint32 ) );
384 quint32 *indexPtr = reinterpret_cast<quint32 *>( outNormal.triangles.data() );
385 size_t effective = 0;
386
387 bool horizontalFilter = context.symbol()->horizontalTriangleFilter();
388 bool verticalFilter = context.symbol()->verticalTriangleFilter();
389 float horizontalThreshold = context.symbol()->horizontalFilterThreshold();
390 float verticalThreshold = context.symbol()->verticalFilterThreshold();
391
392 for ( size_t i = 0; i < triangleIndexes.size(); i += 3 )
393 {
394 bool atLeastOneInBox = false;
395 bool horizontalSkip = false;
396 bool verticalSkip = false;
397 for ( size_t j = 0; j < 3; j++ )
398 {
399 QVector3D pos = outNormal.positions.at( triangleIndexes.at( i + j ) );
400 atLeastOneInBox |= bbox.intersects( pos.x(), pos.y(), pos.z() );
401
402 if ( verticalFilter || horizontalFilter )
403 {
404 const QVector3D pos2 = outNormal.positions.at( triangleIndexes.at( i + ( j + 1 ) % 3 ) );
405
406 if ( verticalFilter )
407 verticalSkip |= std::fabs( pos.y() - pos2.y() ) > verticalThreshold;
408
409 if ( horizontalFilter && ! verticalSkip )
410 {
411 // filter only in the horizontal plan, it is a 2.5D triangulation.
412 horizontalSkip |= sqrt( std::pow( pos.x() - pos2.x(), 2 ) +
413 std::pow( pos.z() - pos2.z(), 2 ) ) > horizontalThreshold;
414 }
415
416 if ( horizontalSkip || verticalSkip )
417 break;
418 }
419 }
420 if ( atLeastOneInBox && !horizontalSkip && !verticalSkip )
421 {
422 for ( size_t j = 0; j < 3; j++ )
423 {
424 size_t vertIndex = triangleIndexes.at( i + j );
425 *indexPtr++ = quint32( vertIndex );
426 }
427 effective++;
428 }
429 }
430
431 if ( effective != 0 )
432 {
433 outNormal.triangles.resize( effective * 3 * sizeof( quint32 ) );
434 }
435 else
436 {
437 outNormal.triangles.clear();
438 outNormal.normals.clear();
439 }
440}
441
442void QgsPointCloud3DSymbolHandler::triangulate( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, const QgsAABB &bbox )
443{
444 if ( outNormal.positions.isEmpty() )
445 return;
446
447 // Triangulation happens here
448 std::unique_ptr<delaunator::Delaunator> triangulation;
449 try
450 {
451 std::vector<double> vertices = getVertices( pc, n, context, bbox );
452 triangulation.reset( new delaunator::Delaunator( vertices ) );
453 }
454 catch ( std::exception &e )
455 {
456 // something went wrong, better to retrieve initial state
457 QgsDebugMsgLevel( QStringLiteral( "Error with triangulation" ), 4 );
458 outNormal = PointData();
459 processNode( pc, n, context );
460 return;
461 }
462
463 const std::vector<size_t> &triangleIndexes = triangulation->triangles;
464
465 calculateNormals( triangleIndexes );
466 filterTriangles( triangleIndexes, context, bbox );
467}
468
469std::unique_ptr<QgsPointCloudBlock> QgsPointCloud3DSymbolHandler::pointCloudBlock( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloudRequest &request, const QgsPointCloud3DRenderContext &context )
470{
471 std::unique_ptr<QgsPointCloudBlock> block;
472 if ( pc->accessType() == QgsPointCloudIndex::AccessType::Local )
473 {
474 block = pc->nodeData( n, request );
475 }
476 else if ( pc->accessType() == QgsPointCloudIndex::AccessType::Remote )
477 {
478 bool loopAborted = false;
479 QEventLoop loop;
480 QgsPointCloudBlockRequest *req = pc->asyncNodeData( n, request );
481 QObject::connect( req, &QgsPointCloudBlockRequest::finished, &loop, &QEventLoop::quit );
482 QObject::connect( context.feedback(), &QgsFeedback::canceled, &loop, [ & ]()
483 {
484 loopAborted = true;
485 loop.quit();
486 } );
487 loop.exec();
488
489 if ( !loopAborted )
490 block = req->takeBlock();
491 }
492 return block;
493}
494
495//
496
497QgsSingleColorPointCloud3DSymbolHandler::QgsSingleColorPointCloud3DSymbolHandler()
498 : QgsPointCloud3DSymbolHandler()
499{
500
501}
502
503bool QgsSingleColorPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
504{
505 Q_UNUSED( context )
506 return true;
507}
508
509void QgsSingleColorPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context )
510{
511 QgsPointCloudAttributeCollection attributes;
512 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
513 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
514 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
515
516 QgsPointCloudRequest request;
517 request.setAttributes( attributes );
518 request.setFilterRect( context.extent() );
519 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
520 if ( !block )
521 return;
522
523 const char *ptr = block->data();
524 const int count = block->pointCount();
525 const std::size_t recordSize = block->attributes().pointRecordSize();
526 const QgsVector3D blockScale = block->scale();
527 const QgsVector3D blockOffset = block->offset();
528 const double zValueScale = context.zValueScale();
529 const double zValueOffset = context.zValueFixedOffset();
530 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
531 bool alreadyPrintedDebug = false;
532
533 for ( int i = 0; i < count; ++i )
534 {
535 if ( context.isCanceled() )
536 break;
537
538 const qint32 ix = *( qint32 * )( ptr + i * recordSize + 0 );
539 const qint32 iy = *( qint32 * )( ptr + i * recordSize + 4 );
540 const qint32 iz = *( qint32 * )( ptr + i * recordSize + 8 );
541
542 double x = blockOffset.x() + blockScale.x() * ix;
543 double y = blockOffset.y() + blockScale.y() * iy;
544 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
545 try
546 {
547 coordinateTransform.transformInPlace( x, y, z );
548 }
549 catch ( QgsCsException &e )
550 {
551 if ( !alreadyPrintedDebug )
552 {
553 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
554 alreadyPrintedDebug = true;
555 }
556 }
557 const QgsVector3D point( x, y, z );
558 const QgsVector3D p = context.map().mapToWorldCoordinates( QgsVector3D( x, y, z ) );
559 outNormal.positions.push_back( QVector3D( p.x(), p.y(), p.z() ) );
560 }
561}
562
563void QgsSingleColorPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
564{
565 makeEntity( parent, context, outNormal, false );
566}
567
568Qt3DQGeometry *QgsSingleColorPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
569{
570 return new QgsSingleColorPointCloud3DGeometry( parent, data, byteStride );
571}
572
573QgsColorRampPointCloud3DSymbolHandler::QgsColorRampPointCloud3DSymbolHandler()
574 : QgsPointCloud3DSymbolHandler()
575{
576
577}
578
579bool QgsColorRampPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
580{
581 Q_UNUSED( context )
582 return true;
583}
584
585void QgsColorRampPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context )
586{
587 QgsPointCloudAttributeCollection attributes;
588 const int xOffset = 0;
589 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
590 const int yOffset = attributes.pointRecordSize();
591 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
592 const int zOffset = attributes.pointRecordSize();
593 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
594
595 QString attributeName;
596 bool attrIsX = false;
597 bool attrIsY = false;
598 bool attrIsZ = false;
599 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
600 int attributeOffset = 0;
601 const double zValueScale = context.zValueScale();
602 const double zValueOffset = context.zValueFixedOffset();
603 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
604 bool alreadyPrintedDebug = false;
605
606 QgsColorRampPointCloud3DSymbol *symbol = dynamic_cast<QgsColorRampPointCloud3DSymbol *>( context.symbol() );
607 if ( symbol )
608 {
609 int offset = 0;
610 const QgsPointCloudAttributeCollection collection = context.attributes();
611
612 if ( symbol->attribute() == QLatin1String( "X" ) )
613 {
614 attrIsX = true;
615 }
616 else if ( symbol->attribute() == QLatin1String( "Y" ) )
617 {
618 attrIsY = true;
619 }
620 else if ( symbol->attribute() == QLatin1String( "Z" ) )
621 {
622 attrIsZ = true;
623 }
624 else
625 {
626 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
627 if ( attr )
628 {
629 attributeType = attr->type();
630 attributeName = attr->name();
631 attributeOffset = attributes.pointRecordSize();
632 attributes.push_back( *attr );
633 }
634 }
635 }
636
637 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
638 return;
639
640 QgsPointCloudRequest request;
641 request.setAttributes( attributes );
642 request.setFilterRect( context.extent() );
643 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
644 if ( !block )
645 return;
646
647 const char *ptr = block->data();
648 const int count = block->pointCount();
649 const std::size_t recordSize = block->attributes().pointRecordSize();
650
651 const QgsVector3D blockScale = block->scale();
652 const QgsVector3D blockOffset = block->offset();
653
654 for ( int i = 0; i < count; ++i )
655 {
656 if ( context.isCanceled() )
657 break;
658
659 const qint32 ix = *( qint32 * )( ptr + i * recordSize + xOffset );
660 const qint32 iy = *( qint32 * )( ptr + i * recordSize + yOffset );
661 const qint32 iz = *( qint32 * )( ptr + i * recordSize + zOffset );
662
663 double x = blockOffset.x() + blockScale.x() * ix;
664 double y = blockOffset.y() + blockScale.y() * iy;
665 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
666 try
667 {
668 coordinateTransform.transformInPlace( x, y, z );
669 }
670 catch ( QgsCsException & )
671 {
672 if ( !alreadyPrintedDebug )
673 {
674 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
675 alreadyPrintedDebug = true;
676 }
677 }
678 QgsVector3D point( x, y, z );
679 point = context.map().mapToWorldCoordinates( point );
680 outNormal.positions.push_back( QVector3D( point.x(), point.y(), point.z() ) );
681
682 if ( attrIsX )
683 outNormal.parameter.push_back( x );
684 else if ( attrIsY )
685 outNormal.parameter.push_back( y );
686 else if ( attrIsZ )
687 outNormal.parameter.push_back( z );
688 else
689 {
690 float iParam = 0.0f;
691 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
692 outNormal.parameter.push_back( iParam );
693 }
694 }
695}
696
697void QgsColorRampPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
698{
699 makeEntity( parent, context, outNormal, false );
700}
701
702Qt3DQGeometry *QgsColorRampPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
703{
704 return new QgsColorRampPointCloud3DGeometry( parent, data, byteStride );
705}
706
707QgsRGBPointCloud3DSymbolHandler::QgsRGBPointCloud3DSymbolHandler()
708 : QgsPointCloud3DSymbolHandler()
709{
710
711}
712
713bool QgsRGBPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
714{
715 Q_UNUSED( context )
716 return true;
717}
718
719void QgsRGBPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context )
720{
721 QgsPointCloudAttributeCollection attributes;
722 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
723 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
724 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
725
726 QgsRgbPointCloud3DSymbol *symbol = dynamic_cast<QgsRgbPointCloud3DSymbol *>( context.symbol() );
727
728 // we have to get the RGB attributes using their real data types -- they aren't always short! (sometimes unsigned short)
729 int attrOffset = 0 ;
730
731 const int redOffset = attributes.pointRecordSize();
732 const QgsPointCloudAttribute *colorAttribute = context.attributes().find( symbol->redAttribute(), attrOffset );
733 attributes.push_back( *colorAttribute );
734 const QgsPointCloudAttribute::DataType redType = colorAttribute->type();
735
736 const int greenOffset = attributes.pointRecordSize();
737 colorAttribute = context.attributes().find( symbol->greenAttribute(), attrOffset );
738 attributes.push_back( *colorAttribute );
739 const QgsPointCloudAttribute::DataType greenType = colorAttribute->type();
740
741 const int blueOffset = attributes.pointRecordSize();
742 colorAttribute = context.attributes().find( symbol->blueAttribute(), attrOffset );
743 attributes.push_back( *colorAttribute );
744 const QgsPointCloudAttribute::DataType blueType = colorAttribute->type();
745
746 QgsPointCloudRequest request;
747 request.setAttributes( attributes );
748 request.setFilterRect( context.extent() );
749 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
750 if ( !block )
751 return;
752
753 const char *ptr = block->data();
754 const int count = block->pointCount();
755 const std::size_t recordSize = block->attributes().pointRecordSize();
756
757 const QgsVector3D blockScale = block->scale();
758 const QgsVector3D blockOffset = block->offset();
759 const double zValueScale = context.zValueScale();
760 const double zValueOffset = context.zValueFixedOffset();
761 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
762 bool alreadyPrintedDebug = false;
763
764 QgsContrastEnhancement *redContrastEnhancement = symbol->redContrastEnhancement();
765 QgsContrastEnhancement *greenContrastEnhancement = symbol->greenContrastEnhancement();
766 QgsContrastEnhancement *blueContrastEnhancement = symbol->blueContrastEnhancement();
767
768 const bool useRedContrastEnhancement = redContrastEnhancement && redContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
769 const bool useBlueContrastEnhancement = blueContrastEnhancement && blueContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
770 const bool useGreenContrastEnhancement = greenContrastEnhancement && greenContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
771
772 int ir = 0;
773 int ig = 0;
774 int ib = 0;
775 for ( int i = 0; i < count; ++i )
776 {
777 if ( context.isCanceled() )
778 break;
779
780 const qint32 ix = *( qint32 * )( ptr + i * recordSize + 0 );
781 const qint32 iy = *( qint32 * )( ptr + i * recordSize + 4 );
782 const qint32 iz = *( qint32 * )( ptr + i * recordSize + 8 );
783 double x = blockOffset.x() + blockScale.x() * ix;
784 double y = blockOffset.y() + blockScale.y() * iy;
785 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
786 try
787 {
788 coordinateTransform.transformInPlace( x, y, z );
789 }
790 catch ( QgsCsException & )
791 {
792 if ( !alreadyPrintedDebug )
793 {
794 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
795 alreadyPrintedDebug = true;
796 }
797 }
798 const QgsVector3D point( x, y, z );
799 const QgsVector3D p = context.map().mapToWorldCoordinates( point );
800
801 QVector3D color( 0.0f, 0.0f, 0.0f );
802
803 context.getAttribute( ptr, i * recordSize + redOffset, redType, ir );
804 context.getAttribute( ptr, i * recordSize + greenOffset, greenType, ig );
805 context.getAttribute( ptr, i * recordSize + blueOffset, blueType, ib );
806
807 //skip if red, green or blue not in displayable range
808 if ( ( useRedContrastEnhancement && !redContrastEnhancement->isValueInDisplayableRange( ir ) )
809 || ( useGreenContrastEnhancement && !greenContrastEnhancement->isValueInDisplayableRange( ig ) )
810 || ( useBlueContrastEnhancement && !blueContrastEnhancement->isValueInDisplayableRange( ib ) ) )
811 {
812 continue;
813 }
814
815 //stretch color values
816 if ( useRedContrastEnhancement )
817 {
818 ir = redContrastEnhancement->enhanceContrast( ir );
819 }
820 if ( useGreenContrastEnhancement )
821 {
822 ig = greenContrastEnhancement->enhanceContrast( ig );
823 }
824 if ( useBlueContrastEnhancement )
825 {
826 ib = blueContrastEnhancement->enhanceContrast( ib );
827 }
828
829 color.setX( ir / 255.0f );
830 color.setY( ig / 255.0f );
831 color.setZ( ib / 255.0f );
832
833 outNormal.positions.push_back( QVector3D( p.x(), p.y(), p.z() ) );
834 outNormal.colors.push_back( color );
835 }
836}
837
838void QgsRGBPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
839{
840 makeEntity( parent, context, outNormal, false );
841}
842
843Qt3DQGeometry *QgsRGBPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
844{
845 return new QgsRGBPointCloud3DGeometry( parent, data, byteStride );
846}
847
848QgsClassificationPointCloud3DSymbolHandler::QgsClassificationPointCloud3DSymbolHandler()
849 : QgsPointCloud3DSymbolHandler()
850{
851
852}
853
854bool QgsClassificationPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
855{
856 Q_UNUSED( context )
857 return true;
858}
859
860void QgsClassificationPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context )
861{
862 QgsPointCloudAttributeCollection attributes;
863 const int xOffset = 0;
864 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
865 const int yOffset = attributes.pointRecordSize();
866 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
867 const int zOffset = attributes.pointRecordSize();
868 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
869
870 QString attributeName;
871 bool attrIsX = false;
872 bool attrIsY = false;
873 bool attrIsZ = false;
874 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
875 int attributeOffset = 0;
876 QgsClassificationPointCloud3DSymbol *symbol = dynamic_cast<QgsClassificationPointCloud3DSymbol *>( context.symbol() );
877 if ( symbol )
878 {
879 int offset = 0;
880 const QgsPointCloudAttributeCollection collection = context.attributes();
881
882 if ( symbol->attribute() == QLatin1String( "X" ) )
883 {
884 attrIsX = true;
885 }
886 else if ( symbol->attribute() == QLatin1String( "Y" ) )
887 {
888 attrIsY = true;
889 }
890 else if ( symbol->attribute() == QLatin1String( "Z" ) )
891 {
892 attrIsZ = true;
893 }
894 else
895 {
896 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
897 if ( attr )
898 {
899 attributeType = attr->type();
900 attributeName = attr->name();
901 attributeOffset = attributes.pointRecordSize();
902 attributes.push_back( *attr );
903 }
904 }
905 }
906
907 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
908 return;
909
910 QgsPointCloudRequest request;
911 request.setAttributes( attributes );
912 request.setFilterRect( context.extent() );
913 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
914 if ( !block )
915 return;
916
917 const char *ptr = block->data();
918 const int count = block->pointCount();
919 const std::size_t recordSize = block->attributes().pointRecordSize();
920
921 const QgsVector3D blockScale = block->scale();
922 const QgsVector3D blockOffset = block->offset();
923 const double zValueScale = context.zValueScale();
924 const double zValueOffset = context.zValueFixedOffset();
925 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
926 bool alreadyPrintedDebug = false;
927
928 QList<QgsPointCloudCategory> categoriesList = symbol->categoriesList();
929 QVector<int> categoriesValues;
930 for ( QgsPointCloudCategory &c : categoriesList )
931 {
932 categoriesValues.push_back( c.value() );
933 }
934
935 const QSet<int> filteredOutValues = context.getFilteredOutValues();
936 for ( int i = 0; i < count; ++i )
937 {
938 if ( context.isCanceled() )
939 break;
940
941 const qint32 ix = *( qint32 * )( ptr + i * recordSize + xOffset );
942 const qint32 iy = *( qint32 * )( ptr + i * recordSize + yOffset );
943 const qint32 iz = *( qint32 * )( ptr + i * recordSize + zOffset );
944
945 double x = blockOffset.x() + blockScale.x() * ix;
946 double y = blockOffset.y() + blockScale.y() * iy;
947 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
948 try
949 {
950 coordinateTransform.transformInPlace( x, y, z );
951 }
952 catch ( QgsCsException & )
953 {
954 if ( !alreadyPrintedDebug )
955 {
956 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
957 alreadyPrintedDebug = true;
958 }
959 }
960 const QgsVector3D point( x, y, z );
961 const QgsVector3D p = context.map().mapToWorldCoordinates( point );
962 float iParam = 0.0f;
963 if ( attrIsX )
964 iParam = x;
965 else if ( attrIsY )
966 iParam = y;
967 else if ( attrIsZ )
968 iParam = z;
969 else
970 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
971
972 if ( filteredOutValues.contains( ( int ) iParam ) ||
973 ! categoriesValues.contains( ( int ) iParam ) )
974 continue;
975 outNormal.positions.push_back( QVector3D( p.x(), p.y(), p.z() ) );
976
977 // find iParam actual index in the categories list
978 float iParam2 = categoriesValues.indexOf( ( int )iParam ) + 1;
979 outNormal.parameter.push_back( iParam2 );
980 }
981}
982
983void QgsClassificationPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
984{
985 makeEntity( parent, context, outNormal, false );
986}
987
988Qt3DQGeometry *QgsClassificationPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
989{
990 return new QgsColorRampPointCloud3DGeometry( parent, data, byteStride );
991}
992
IndexedPointCloudNode
Represents a indexed point cloud node in octree.
Definition qgspointcloudindex.h:58
IndexedPointCloudNode::d
int d() const
Returns d.
Definition qgspointcloudindex.cpp:63
IndexedPointCloudNode::parentNode
IndexedPointCloudNode parentNode() const
Returns the parent of the node.
Definition qgspointcloudindex.cpp:45
QgsAABB::xMax
float xMax
Definition qgsaabb.h:87
QgsAABB::xExtent
float xExtent() const
Returns box width in X axis.
Definition qgsaabb.h:43
QgsAABB::zExtent
float zExtent() const
Returns box width in Z axis.
Definition qgsaabb.h:47
QgsAABB::xMin
float xMin
Definition qgsaabb.h:84
QgsAABB::zMax
float zMax
Definition qgsaabb.h:89
QgsAABB::intersects
bool intersects(const QgsAABB &other) const
Determines whether the box intersects some other axis aligned box.
Definition qgsaabb.cpp:35
QgsAABB::zMin
float zMin
Definition qgsaabb.h:86
QgsClassificationPointCloud3DSymbol::categoriesList
QgsPointCloudCategoryList categoriesList() const
Returns the list of categories of the classification.
Definition qgspointcloud3dsymbol.h:502
QgsClassificationPointCloud3DSymbol::attribute
QString attribute() const
Returns the attribute used to select the color of the point cloud.
Definition qgspointcloud3dsymbol.cpp:529
QgsColorRampPointCloud3DSymbol::attribute
QString attribute() const
Returns the attribute used to select the color of the point cloud.
Definition qgspointcloud3dsymbol.cpp:227
QgsContrastEnhancement
Manipulates raster or point cloud pixel values so that they enhanceContrast or clip into a specified ...
Definition qgscontrastenhancement.h:43
QgsContrastEnhancement::NoEnhancement
@ NoEnhancement
Default color scaling algorithm, no scaling is applied.
Definition qgscontrastenhancement.h:50
QgsContrastEnhancement::isValueInDisplayableRange
bool isValueInDisplayableRange(double value)
Returns true if a pixel value is in displayable range, false if pixel is outside of range (i....
Definition qgscontrastenhancement.cpp:143
QgsContrastEnhancement::enhanceContrast
int enhanceContrast(double value)
Applies the contrast enhancement to a value.
Definition qgscontrastenhancement.cpp:72
QgsContrastEnhancement::contrastEnhancementAlgorithm
ContrastEnhancementAlgorithm contrastEnhancementAlgorithm() const
Definition qgscontrastenhancement.h:164
QgsCoordinateTransform
Class for doing transforms between two map coordinate systems.
Definition qgscoordinatetransform.h:58
QgsCoordinateTransform::transformInPlace
void transformInPlace(double &x, double &y, double &z, Qgis::TransformDirection direction=Qgis::TransformDirection::Forward) const
Transforms an array of x, y and z double coordinates in place, from the source CRS to the destination...
Definition qgscoordinatetransform.cpp:371
QgsCsException
Custom exception class for Coordinate Reference System related exceptions.
Definition qgsexception.h:67
QgsFeedback::canceled
void canceled()
Internal routines can connect to this signal if they use event loop.
QgsPointCloud3DRenderContext
Encapsulates the render context for a 3D point cloud rendering operation.
Definition qgspointcloudlayer3drenderer.h:43
QgsPointCloud3DRenderContext::extent
QgsRectangle extent() const
Returns the 3D scene's extent in layer crs.
Definition qgspointcloudlayer3drenderer.h:196
QgsPointCloud3DRenderContext::getAttribute
void getAttribute(const char *data, std::size_t offset, QgsPointCloudAttribute::DataType type, T &value) const
Retrieves the attribute value from data at the specified offset, where type indicates the original da...
Definition qgspointcloudlayer3drenderer.h:109
QgsPointCloud3DRenderContext::getFilteredOutValues
QSet< int > getFilteredOutValues() const
Returns a set containing the filtered out values.
Definition qgspointcloudlayer3drenderer.cpp:57
QgsPointCloud3DRenderContext::symbol
QgsPointCloud3DSymbol * symbol() const
Returns the symbol used for rendering the point cloud.
Definition qgspointcloudlayer3drenderer.h:83
QgsPointCloud3DRenderContext::zValueScale
double zValueScale() const
Returns any constant scaling factor which must be applied to z values taken from the point cloud inde...
Definition qgspointcloudlayer3drenderer.h:157
QgsPointCloud3DRenderContext::feedback
QgsFeedback * feedback() const
Returns the feedback object used to cancel rendering and check if rendering was canceled.
Definition qgspointcloudlayer3drenderer.h:190
QgsPointCloud3DRenderContext::attributes
QgsPointCloudAttributeCollection attributes() const
Returns the attributes associated with the rendered block.
Definition qgspointcloudlayer3drenderer.h:69
QgsPointCloud3DRenderContext::isCanceled
bool isCanceled() const
Returns true if the rendering is canceled.
Definition qgspointcloudlayer3drenderer.cpp:71
QgsPointCloud3DRenderContext::coordinateTransform
QgsCoordinateTransform coordinateTransform() const
Returns the coordinate transform used to transform points from layer CRS to the map CRS.
Definition qgspointcloudlayer3drenderer.h:185
QgsPointCloud3DRenderContext::zValueFixedOffset
double zValueFixedOffset() const
Returns any constant offset which must be applied to z values taken from the point cloud index.
Definition qgspointcloudlayer3drenderer.h:164
QgsPointCloud3DSymbol::verticalTriangleFilter
bool verticalTriangleFilter() const
Returns whether triangles are filtered by vertical height for rendering.
Definition qgspointcloud3dsymbol.cpp:70
QgsPointCloud3DSymbol::verticalFilterThreshold
float verticalFilterThreshold() const
Returns the threshold vertical height value for filtering triangles.
Definition qgspointcloud3dsymbol.cpp:80
QgsPointCloud3DSymbol::byteStride
virtual unsigned int byteStride()=0
Returns the byte stride for the geometries used to for the vertex buffer.
QgsPointCloud3DSymbol::horizontalFilterThreshold
float horizontalFilterThreshold() const
Returns the threshold horizontal size value for filtering triangles.
Definition qgspointcloud3dsymbol.cpp:60
QgsPointCloud3DSymbol::fillMaterial
virtual void fillMaterial(Qt3DRender::QMaterial *material)=0SIP_SKIP
Used to fill material object with necessary QParameters (and consequently opengl uniforms)
QgsPointCloud3DSymbol::renderAsTriangles
bool renderAsTriangles() const
Returns whether points are triangulated to render solid surface.
Definition qgspointcloud3dsymbol.cpp:40
QgsPointCloud3DSymbol::pointSize
float pointSize() const
Returns the point size of the point cloud.
Definition qgspointcloud3dsymbol.h:75
QgsPointCloud3DSymbol::horizontalTriangleFilter
bool horizontalTriangleFilter() const
Returns whether triangles are filtered by horizontal size for rendering.
Definition qgspointcloud3dsymbol.cpp:50
QgsPointCloudAttributeCollection
Collection of point cloud attributes.
Definition qgspointcloudattribute.h:142
QgsPointCloudAttributeCollection::push_back
void push_back(const QgsPointCloudAttribute &attribute)
Adds extra attribute.
Definition qgspointcloudattribute.cpp:142
QgsPointCloudAttributeCollection::pointRecordSize
int pointRecordSize() const
Returns total size of record.
Definition qgspointcloudattribute.h:187
QgsPointCloudAttributeCollection::find
const QgsPointCloudAttribute * find(const QString &attributeName, int &offset) const
Finds the attribute with the name.
Definition qgspointcloudattribute.cpp:168
QgsPointCloudAttribute
Attribute for point cloud data pair of name and size in bytes.
Definition qgspointcloudattribute.h:41
QgsPointCloudAttribute::DataType
DataType
Systems of unit measurement.
Definition qgspointcloudattribute.h:45
QgsPointCloudAttribute::name
QString name() const
Returns name of the attribute.
Definition qgspointcloudattribute.h:64
QgsPointCloudAttribute::type
DataType type() const
Returns the data type.
Definition qgspointcloudattribute.h:74
QgsPointCloudBlockRequest
Base class for handling loading QgsPointCloudBlock asynchronously.
Definition qgspointcloudblockrequest.h:37
QgsPointCloudBlockRequest::finished
void finished()
Emitted when the request processing has finished.
QgsPointCloudBlockRequest::takeBlock
std::unique_ptr< QgsPointCloudBlock > takeBlock()
Returns the requested block.
QgsPointCloudCategory
Represents an individual category (class) from a QgsPointCloudClassifiedRenderer.
Definition qgspointcloudclassifiedrenderer.h:33
QgsPointCloudIndex
Represents a indexed point clouds data in octree.
Definition qgspointcloudindex.h:169
QgsPointCloudIndex::span
int span() const
Returns the number of points in one direction in a single node.
Definition qgspointcloudindex.cpp:247
QgsPointCloudIndex::asyncNodeData
virtual QgsPointCloudBlockRequest * asyncNodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns a handle responsible for loading a node data block.
QgsPointCloudIndex::Remote
@ Remote
Remote means it's loaded through a protocol like HTTP.
Definition qgspointcloudindex.h:176
QgsPointCloudIndex::Local
@ Local
Local means the source is a local file on the machine.
Definition qgspointcloudindex.h:175
QgsPointCloudIndex::accessType
virtual AccessType accessType() const =0
Returns the access type of the data If the access type is Remote, data will be fetched from an HTTP s...
QgsPointCloudIndex::nodeData
virtual std::unique_ptr< QgsPointCloudBlock > nodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns node data block.
QgsPointCloudRequest
Point cloud data request.
Definition qgspointcloudrequest.h:42
QgsPointCloudRequest::setFilterRect
void setFilterRect(QgsRectangle extent)
Sets the rectangle from which points will be taken, in point cloud's crs.
Definition qgspointcloudrequest.h:63
QgsPointCloudRequest::setAttributes
void setAttributes(const QgsPointCloudAttributeCollection &attributes)
Set attributes filter in the request.
Definition qgspointcloudrequest.cpp:29
QgsRgbPointCloud3DSymbol::blueAttribute
QString blueAttribute() const
Returns the attribute to use for the blue channel.
Definition qgspointcloud3dsymbol.cpp:416
QgsRgbPointCloud3DSymbol::greenAttribute
QString greenAttribute() const
Returns the attribute to use for the green channel.
Definition qgspointcloud3dsymbol.cpp:406
QgsRgbPointCloud3DSymbol::blueContrastEnhancement
QgsContrastEnhancement * blueContrastEnhancement()
Returns the contrast enhancement to use for the blue channel.
Definition qgspointcloud3dsymbol.cpp:446
QgsRgbPointCloud3DSymbol::redAttribute
QString redAttribute() const
Returns the attribute to use for the red channel.
Definition qgspointcloud3dsymbol.cpp:396
QgsRgbPointCloud3DSymbol::greenContrastEnhancement
QgsContrastEnhancement * greenContrastEnhancement()
Returns the contrast enhancement to use for the green channel.
Definition qgspointcloud3dsymbol.cpp:436
QgsRgbPointCloud3DSymbol::redContrastEnhancement
QgsContrastEnhancement * redContrastEnhancement()
Returns the contrast enhancement to use for the red channel.
Definition qgspointcloud3dsymbol.cpp:426
QgsVector3D
Class for storage of 3D vectors similar to QVector3D, with the difference that it uses double precisi...
Definition qgsvector3d.h:32
QgsVector3D::y
double y() const
Returns Y coordinate.
Definition qgsvector3d.h:51
QgsVector3D::z
double z() const
Returns Z coordinate.
Definition qgsvector3d.h:53
QgsVector3D::x
double x() const
Returns X coordinate.
Definition qgsvector3d.h:49
c
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
Definition porting_processing.dox:1
Qt3DQAttribute
Qt3DCore::QAttribute Qt3DQAttribute
Definition qgs3daxis.cpp:28
Qt3DQBuffer
Qt3DCore::QBuffer Qt3DQBuffer
Definition qgs3daxis.cpp:30
Qt3DQGeometry
Qt3DCore::QGeometry Qt3DQGeometry
Definition qgs3daxis.cpp:29
QgsDebugMsgLevel
#define QgsDebugMsgLevel(str, level)
Definition qgslogger.h:39
QgsDebugError
#define QgsDebugError(str)
Definition qgslogger.h:38
qgspointcloud3dsymbol_p.h
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