QGIS API Documentation 3.41.0-Master (af5edcb665c)
Loading...
Searching...
No Matches
qgspointcloud3dsymbol_p.cpp
Go to the documentation of this file.
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#include "moc_qgspointcloud3dsymbol_p.cpp"
18
20
21#include "qgspointcloud3dsymbol.h"
22#include "qgspointcloudattribute.h"
23#include "qgspointcloudrequest.h"
24#include "qgspointcloudindex.h"
25#include "qgspointcloudblockrequest.h"
26#include "qgsfeedback.h"
27#include "qgsaabb.h"
28#include "qgsgeotransform.h"
29
30#include <Qt3DCore/QEntity>
31#include <Qt3DRender/QGeometryRenderer>
32#include <Qt3DRender/QParameter>
33#if QT_VERSION < QT_VERSION_CHECK( 6, 0, 0 )
34#include <Qt3DRender/QAttribute>
35#include <Qt3DRender/QBuffer>
36#include <Qt3DRender/QGeometry>
37
38typedef Qt3DRender::QAttribute Qt3DQAttribute;
39typedef Qt3DRender::QBuffer Qt3DQBuffer;
40typedef Qt3DRender::QGeometry Qt3DQGeometry;
41#else
42#include <Qt3DCore/QAttribute>
43#include <Qt3DCore/QBuffer>
44#include <Qt3DCore/QGeometry>
45
46typedef Qt3DCore::QAttribute Qt3DQAttribute;
47typedef Qt3DCore::QBuffer Qt3DQBuffer;
48typedef Qt3DCore::QGeometry Qt3DQGeometry;
49#endif
50#include <Qt3DRender/QTechnique>
51#include <Qt3DRender/QShaderProgram>
52#include <Qt3DRender/QGraphicsApiFilter>
53#include <Qt3DRender/QEffect>
54#include <QPointSize>
55#include <QUrl>
56
57#include <delaunator.hpp>
58
59// pick a point that we'll use as origin for coordinates for this node's points
60static QgsVector3D originFromNodeBounds( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context )
61{
62 QgsBox3D bounds = pc->getNode( n ).bounds();
63 double nodeOriginX = bounds.xMinimum();
64 double nodeOriginY = bounds.yMinimum();
65 double nodeOriginZ = bounds.zMinimum() * context.zValueScale() + context.zValueFixedOffset();
66 try
67 {
68 context.coordinateTransform().transformInPlace( nodeOriginX, nodeOriginY, nodeOriginZ );
69 }
70 catch ( QgsCsException & )
71 {
72 QgsDebugError( QStringLiteral( "Error transforming node origin point" ) );
73 }
74 return QgsVector3D( nodeOriginX, nodeOriginY, nodeOriginZ );
75}
76
77
78QgsPointCloud3DGeometry::QgsPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
79 : Qt3DQGeometry( parent )
80 , mPositionAttribute( new Qt3DQAttribute( this ) )
81 , mParameterAttribute( new Qt3DQAttribute( this ) )
82 , mPointSizeAttribute( new Qt3DQAttribute( this ) )
83 , mColorAttribute( new Qt3DQAttribute( this ) )
84 , mTriangleIndexAttribute( new Qt3DQAttribute( this ) )
85 , mNormalsAttribute( new Qt3DQAttribute( this ) )
86 , mVertexBuffer( new Qt3DQBuffer( this ) )
87 , mByteStride( byteStride )
88{
89 if ( !data.triangles.isEmpty() )
90 {
91 mTriangleBuffer = new Qt3DQBuffer( this );
92 mTriangleIndexAttribute->setAttributeType( Qt3DQAttribute::IndexAttribute );
93 mTriangleIndexAttribute->setBuffer( mTriangleBuffer );
94 mTriangleIndexAttribute->setVertexBaseType( Qt3DQAttribute::UnsignedInt );
95 mTriangleBuffer->setData( data.triangles );
96 mTriangleIndexAttribute->setCount( data.triangles.size() / sizeof( quint32 ) );
97 addAttribute( mTriangleIndexAttribute );
98 }
99
100 if ( !data.normals.isEmpty() )
101 {
102 mNormalsBuffer = new Qt3DQBuffer( this );
103 mNormalsAttribute->setName( Qt3DQAttribute::defaultNormalAttributeName() );
104 mNormalsAttribute->setVertexBaseType( Qt3DQAttribute::Float );
105 mNormalsAttribute->setVertexSize( 3 );
106 mNormalsAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
107 mNormalsAttribute->setBuffer( mNormalsBuffer );
108 mNormalsBuffer->setData( data.normals );
109 mNormalsAttribute->setCount( data.normals.size() / ( 3 * sizeof( float ) ) );
110 addAttribute( mNormalsAttribute );
111 }
112}
113
114QgsSingleColorPointCloud3DGeometry::QgsSingleColorPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
115 : QgsPointCloud3DGeometry( parent, data, byteStride )
116{
117 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
118 mPositionAttribute->setBuffer( mVertexBuffer );
119 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
120 mPositionAttribute->setVertexSize( 3 );
121 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
122 mPositionAttribute->setByteOffset( 0 );
123 mPositionAttribute->setByteStride( mByteStride );
124 addAttribute( mPositionAttribute );
125 makeVertexBuffer( data );
126}
127
128void QgsSingleColorPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
129{
130 QByteArray vertexBufferData;
131 vertexBufferData.resize( data.positions.size() * mByteStride );
132 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
133 int idx = 0;
134 for ( int i = 0; i < data.positions.size(); ++i )
135 {
136 rawVertexArray[idx++] = data.positions.at( i ).x();
137 rawVertexArray[idx++] = data.positions.at( i ).y();
138 rawVertexArray[idx++] = data.positions.at( i ).z();
139 }
140
141 mVertexCount = data.positions.size();
142 mVertexBuffer->setData( vertexBufferData );
143}
144
145QgsColorRampPointCloud3DGeometry::QgsColorRampPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
146 : QgsPointCloud3DGeometry( parent, data, byteStride )
147{
148 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
149 mPositionAttribute->setBuffer( mVertexBuffer );
150 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
151 mPositionAttribute->setVertexSize( 3 );
152 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
153 mPositionAttribute->setByteOffset( 0 );
154 mPositionAttribute->setByteStride( mByteStride );
155 addAttribute( mPositionAttribute );
156 mParameterAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
157 mParameterAttribute->setBuffer( mVertexBuffer );
158 mParameterAttribute->setVertexBaseType( Qt3DQAttribute::Float );
159 mParameterAttribute->setVertexSize( 1 );
160 mParameterAttribute->setName( "vertexParameter" );
161 mParameterAttribute->setByteOffset( 12 );
162 mParameterAttribute->setByteStride( mByteStride );
163 addAttribute( mParameterAttribute );
164 makeVertexBuffer( data );
165}
166
167void QgsColorRampPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
168{
169 QByteArray vertexBufferData;
170 vertexBufferData.resize( data.positions.size() * mByteStride );
171 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
172 int idx = 0;
173 Q_ASSERT( data.positions.size() == data.parameter.size() );
174 for ( int i = 0; i < data.positions.size(); ++i )
175 {
176 rawVertexArray[idx++] = data.positions.at( i ).x();
177 rawVertexArray[idx++] = data.positions.at( i ).y();
178 rawVertexArray[idx++] = data.positions.at( i ).z();
179 rawVertexArray[idx++] = data.parameter.at( i );
180 }
181
182 mVertexCount = data.positions.size();
183 mVertexBuffer->setData( vertexBufferData );
184}
185
186QgsRGBPointCloud3DGeometry::QgsRGBPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
187 : QgsPointCloud3DGeometry( parent, data, byteStride )
188{
189 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
190 mPositionAttribute->setBuffer( mVertexBuffer );
191 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
192 mPositionAttribute->setVertexSize( 3 );
193 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
194 mPositionAttribute->setByteOffset( 0 );
195 mPositionAttribute->setByteStride( mByteStride );
196 addAttribute( mPositionAttribute );
197 mColorAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
198 mColorAttribute->setBuffer( mVertexBuffer );
199 mColorAttribute->setVertexBaseType( Qt3DQAttribute::Float );
200 mColorAttribute->setVertexSize( 3 );
201 mColorAttribute->setName( QStringLiteral( "vertexColor" ) );
202 mColorAttribute->setByteOffset( 12 );
203 mColorAttribute->setByteStride( mByteStride );
204 addAttribute( mColorAttribute );
205 makeVertexBuffer( data );
206}
207
208void QgsRGBPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
209{
210 QByteArray vertexBufferData;
211 vertexBufferData.resize( data.positions.size() * mByteStride );
212 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
213 int idx = 0;
214 Q_ASSERT( data.positions.size() == data.colors.size() );
215 for ( int i = 0; i < data.positions.size(); ++i )
216 {
217 rawVertexArray[idx++] = data.positions.at( i ).x();
218 rawVertexArray[idx++] = data.positions.at( i ).y();
219 rawVertexArray[idx++] = data.positions.at( i ).z();
220 rawVertexArray[idx++] = data.colors.at( i ).x();
221 rawVertexArray[idx++] = data.colors.at( i ).y();
222 rawVertexArray[idx++] = data.colors.at( i ).z();
223 }
224 mVertexCount = data.positions.size();
225 mVertexBuffer->setData( vertexBufferData );
226}
227
228QgsClassificationPointCloud3DGeometry::QgsClassificationPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
229 : QgsPointCloud3DGeometry( parent, data, byteStride )
230{
231 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
232 mPositionAttribute->setBuffer( mVertexBuffer );
233 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
234 mPositionAttribute->setVertexSize( 3 );
235 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
236 mPositionAttribute->setByteOffset( 0 );
237 mPositionAttribute->setByteStride( mByteStride );
238 addAttribute( mPositionAttribute );
239 mParameterAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
240 mParameterAttribute->setBuffer( mVertexBuffer );
241 mParameterAttribute->setVertexBaseType( Qt3DQAttribute::Float );
242 mParameterAttribute->setVertexSize( 1 );
243 mParameterAttribute->setName( "vertexParameter" );
244 mParameterAttribute->setByteOffset( 12 );
245 mParameterAttribute->setByteStride( mByteStride );
246 addAttribute( mParameterAttribute );
247 mPointSizeAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
248 mPointSizeAttribute->setBuffer( mVertexBuffer );
249 mPointSizeAttribute->setVertexBaseType( Qt3DQAttribute::Float );
250 mPointSizeAttribute->setVertexSize( 1 );
251 mPointSizeAttribute->setName( "vertexSize" );
252 mPointSizeAttribute->setByteOffset( 16 );
253 mPointSizeAttribute->setByteStride( mByteStride );
254 addAttribute( mPointSizeAttribute );
255 makeVertexBuffer( data );
256}
257
258void QgsClassificationPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
259{
260 QByteArray vertexBufferData;
261 vertexBufferData.resize( data.positions.size() * mByteStride );
262 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
263 int idx = 0;
264 Q_ASSERT( data.positions.size() == data.parameter.size() );
265 Q_ASSERT( data.positions.size() == data.pointSizes.size() );
266 for ( int i = 0; i < data.positions.size(); ++i )
267 {
268 rawVertexArray[idx++] = data.positions.at( i ).x();
269 rawVertexArray[idx++] = data.positions.at( i ).y();
270 rawVertexArray[idx++] = data.positions.at( i ).z();
271 rawVertexArray[idx++] = data.parameter.at( i );
272 rawVertexArray[idx++] = data.pointSizes.at( i );
273 }
274
275 mVertexCount = data.positions.size();
276 mVertexBuffer->setData( vertexBufferData );
277}
278
279QgsPointCloud3DSymbolHandler::QgsPointCloud3DSymbolHandler()
280{
281}
282
283
284void QgsPointCloud3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context, const QgsPointCloud3DSymbolHandler::PointData &out, bool selected )
285{
286 Q_UNUSED( selected )
287
288 if ( out.positions.empty() )
289 return;
290
291 // Geometry
292 Qt3DQGeometry *geom = makeGeometry( parent, out, context.symbol()->byteStride() );
293 Qt3DRender::QGeometryRenderer *gr = new Qt3DRender::QGeometryRenderer;
294 if ( context.symbol()->renderAsTriangles() && !out.triangles.isEmpty() )
295 {
296 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Triangles );
297 gr->setVertexCount( out.triangles.size() / sizeof( quint32 ) );
298 }
299 else
300 {
301 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Points );
302 gr->setVertexCount( out.positions.count() );
303 }
304 gr->setGeometry( geom );
305
306 // Transform: chunks are using coordinates relative to chunk origin, with X,Y,Z axes being the same
307 // as map coordinates, so we need to rotate and translate entities to get them into world coordinates
308 QgsGeoTransform *tr = new QgsGeoTransform;
309 tr->setGeoTranslation( out.positionsOrigin );
310
311 // Material
312 QgsMaterial *mat = new QgsMaterial;
313 if ( context.symbol() )
314 context.symbol()->fillMaterial( mat );
315
316 Qt3DRender::QShaderProgram *shaderProgram = new Qt3DRender::QShaderProgram( mat );
317 shaderProgram->setVertexShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.vert" ) ) ) );
318 shaderProgram->setFragmentShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.frag" ) ) ) );
319
320 Qt3DRender::QRenderPass *renderPass = new Qt3DRender::QRenderPass( mat );
321 renderPass->setShaderProgram( shaderProgram );
322
323 if ( out.triangles.isEmpty() )
324 {
325 Qt3DRender::QPointSize *pointSize = new Qt3DRender::QPointSize( renderPass );
326 pointSize->setSizeMode( Qt3DRender::QPointSize::Programmable ); // supported since OpenGL 3.2
327 renderPass->addRenderState( pointSize );
328 }
329
330 // without this filter the default forward renderer would not render this
331 Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
332 filterKey->setName( QStringLiteral( "renderingStyle" ) );
333 filterKey->setValue( "forward" );
334
335 Qt3DRender::QTechnique *technique = new Qt3DRender::QTechnique;
336 technique->addRenderPass( renderPass );
337 technique->addFilterKey( filterKey );
338 technique->graphicsApiFilter()->setApi( Qt3DRender::QGraphicsApiFilter::OpenGL );
339 technique->graphicsApiFilter()->setProfile( Qt3DRender::QGraphicsApiFilter::CoreProfile );
340 technique->graphicsApiFilter()->setMajorVersion( 3 );
341 technique->graphicsApiFilter()->setMinorVersion( 1 );
342 technique->addParameter( new Qt3DRender::QParameter( "triangulate", !out.triangles.isEmpty() ) );
343
344 Qt3DRender::QEffect *eff = new Qt3DRender::QEffect;
345 eff->addTechnique( technique );
346 mat->setEffect( eff );
347
348 // All together
349 Qt3DCore::QEntity *entity = new Qt3DCore::QEntity;
350 entity->addComponent( gr );
351 entity->addComponent( tr );
352 entity->addComponent( mat );
353 entity->setParent( parent );
354 // cppcheck wrongly believes entity will leak
355 // cppcheck-suppress memleak
356}
357
358
359std::vector<double> QgsPointCloud3DSymbolHandler::getVertices( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
360{
361 bool hasColorData = !outNormal.colors.empty();
362 bool hasParameterData = !outNormal.parameter.empty();
363 bool hasPointSizeData = !outNormal.pointSizes.empty();
364
365 // first, get the points of the concerned node
366 std::vector<double> vertices( outNormal.positions.size() * 2 );
367 size_t idx = 0;
368 for ( int i = 0; i < outNormal.positions.size(); ++i )
369 {
370 vertices[idx++] = outNormal.positions.at( i ).x();
371 vertices[idx++] = -outNormal.positions.at( i ).y(); // flipping y to have correctly oriented triangles from delaunator
372 }
373
374 // next, we also need all points of all parents nodes to make the triangulation (also external points)
375 QgsPointCloudNodeId parentNode = n.parentNode();
376
377 double span = pc->span();
378 //factor to take account of the density of the point to calculate extension of the bounding box
379 // with a usual value span = 128, bounding box is extended by 12.5 % on each side.
380 double extraBoxFactor = 16 / span;
381
382 // We keep all points in vertical direction to avoid odd triangulation if points are isolated on top
383 QgsRectangle rectRelativeToChunkOrigin = ( box3D - outNormal.positionsOrigin ).toRectangle();
384 rectRelativeToChunkOrigin.grow( extraBoxFactor * std::max( box3D.width(), box3D.height() ) );
385
386 PointData filteredExtraPointData;
387 while ( parentNode.d() >= 0 )
388 {
389 PointData outputParent;
390 processNode( pc, parentNode, context, &outputParent );
391
392 // the "main" chunk and each parent chunks have their origins
393 QVector3D originDifference = ( outputParent.positionsOrigin - outNormal.positionsOrigin ).toVector3D();
394
395 for ( int i = 0; i < outputParent.positions.count(); ++i )
396 {
397 const QVector3D pos = outputParent.positions.at( i ) + originDifference;
398 if ( rectRelativeToChunkOrigin.contains( pos.x(), pos.y() ) )
399 {
400 filteredExtraPointData.positions.append( pos );
401 vertices.push_back( pos.x() );
402 vertices.push_back( -pos.y() ); // flipping y to have correctly oriented triangles from delaunator
403
404 if ( hasColorData )
405 filteredExtraPointData.colors.append( outputParent.colors.at( i ) );
406 if ( hasParameterData )
407 filteredExtraPointData.parameter.append( outputParent.parameter.at( i ) );
408 if ( hasPointSizeData )
409 filteredExtraPointData.pointSizes.append( outputParent.pointSizes.at( i ) );
410 }
411 }
412
413 parentNode = parentNode.parentNode();
414 }
415
416 outNormal.positions.append( filteredExtraPointData.positions );
417 outNormal.colors.append( filteredExtraPointData.colors );
418 outNormal.parameter.append( filteredExtraPointData.parameter );
419 outNormal.pointSizes.append( filteredExtraPointData.pointSizes );
420
421 return vertices;
422}
423
424void QgsPointCloud3DSymbolHandler::calculateNormals( const std::vector<size_t> &triangles )
425{
426 QVector<QVector3D> normals( outNormal.positions.count(), QVector3D( 0.0, 0.0, 0.0 ) );
427 for ( size_t i = 0; i < triangles.size(); i += 3 )
428 {
429 QVector<QVector3D> triangleVertices( 3 );
430 for ( size_t j = 0; j < 3; ++j )
431 {
432 size_t vertIndex = triangles.at( i + j );
433 triangleVertices[j] = outNormal.positions.at( vertIndex );
434 }
435 //calculate normals
436 for ( size_t j = 0; j < 3; ++j )
437 normals[triangles.at( i + j )] += QVector3D::crossProduct(
438 triangleVertices.at( 1 ) - triangleVertices.at( 0 ),
439 triangleVertices.at( 2 ) - triangleVertices.at( 0 )
440 );
441 }
442
443 // Build now normals array
444 outNormal.normals.resize( ( outNormal.positions.count() ) * sizeof( float ) * 3 );
445 float *normPtr = reinterpret_cast<float *>( outNormal.normals.data() );
446 for ( int i = 0; i < normals.size(); ++i )
447 {
448 QVector3D normal = normals.at( i );
449 normal = normal.normalized();
450
451 *normPtr++ = normal.x();
452 *normPtr++ = normal.y();
453 *normPtr++ = normal.z();
454 }
455}
456
457void QgsPointCloud3DSymbolHandler::filterTriangles( const std::vector<size_t> &triangleIndexes, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
458{
459 outNormal.triangles.resize( triangleIndexes.size() * sizeof( quint32 ) );
460 quint32 *indexPtr = reinterpret_cast<quint32 *>( outNormal.triangles.data() );
461 size_t effective = 0;
462
463 bool horizontalFilter = context.symbol()->horizontalTriangleFilter();
464 bool verticalFilter = context.symbol()->verticalTriangleFilter();
465 float horizontalThreshold = context.symbol()->horizontalFilterThreshold();
466 float verticalThreshold = context.symbol()->verticalFilterThreshold();
467
468 QgsBox3D boxRelativeToChunkOrigin = box3D - outNormal.positionsOrigin;
469
470 for ( size_t i = 0; i < triangleIndexes.size(); i += 3 )
471 {
472 bool atLeastOneInBox = false;
473 bool horizontalSkip = false;
474 bool verticalSkip = false;
475 for ( size_t j = 0; j < 3; j++ )
476 {
477 QVector3D pos = outNormal.positions.at( triangleIndexes.at( i + j ) );
478 atLeastOneInBox |= boxRelativeToChunkOrigin.contains( pos.x(), pos.y(), pos.z() );
479
480 if ( verticalFilter || horizontalFilter )
481 {
482 const QVector3D pos2 = outNormal.positions.at( triangleIndexes.at( i + ( j + 1 ) % 3 ) );
483
484 if ( verticalFilter )
485 verticalSkip |= std::fabs( pos.z() - pos2.z() ) > verticalThreshold;
486
487 if ( horizontalFilter && !verticalSkip )
488 {
489 // filter only in the horizontal plan, it is a 2.5D triangulation.
490 horizontalSkip |= sqrt( std::pow( pos.x() - pos2.x(), 2 ) + std::pow( pos.y() - pos2.y(), 2 ) ) > horizontalThreshold;
491 }
492
493 if ( horizontalSkip || verticalSkip )
494 break;
495 }
496 }
497 if ( atLeastOneInBox && !horizontalSkip && !verticalSkip )
498 {
499 for ( size_t j = 0; j < 3; j++ )
500 {
501 size_t vertIndex = triangleIndexes.at( i + j );
502 *indexPtr++ = quint32( vertIndex );
503 }
504 effective++;
505 }
506 }
507
508 if ( effective != 0 )
509 {
510 outNormal.triangles.resize( effective * 3 * sizeof( quint32 ) );
511 }
512 else
513 {
514 outNormal.triangles.clear();
515 outNormal.normals.clear();
516 }
517}
518
519void QgsPointCloud3DSymbolHandler::triangulate( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
520{
521 if ( outNormal.positions.isEmpty() )
522 return;
523
524 // Triangulation happens here
525 std::unique_ptr<delaunator::Delaunator> triangulation;
526 try
527 {
528 std::vector<double> vertices = getVertices( pc, n, context, box3D );
529 triangulation.reset( new delaunator::Delaunator( vertices ) );
530 }
531 catch ( std::exception &e )
532 {
533 // something went wrong, better to retrieve initial state
534 QgsDebugMsgLevel( QStringLiteral( "Error with triangulation" ), 4 );
535 outNormal = PointData();
536 processNode( pc, n, context );
537 return;
538 }
539
540 const std::vector<size_t> &triangleIndexes = triangulation->triangles;
541
542 calculateNormals( triangleIndexes );
543 filterTriangles( triangleIndexes, context, box3D );
544}
545
546std::unique_ptr<QgsPointCloudBlock> QgsPointCloud3DSymbolHandler::pointCloudBlock( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloudRequest &request, const QgsPointCloud3DRenderContext &context )
547{
548 std::unique_ptr<QgsPointCloudBlock> block;
549 if ( pc->accessType() == QgsPointCloudIndex::AccessType::Local )
550 {
551 block = pc->nodeData( n, request );
552 }
553 else if ( pc->accessType() == QgsPointCloudIndex::AccessType::Remote )
554 {
555 QgsPointCloudNode node = pc->getNode( n );
556 if ( node.pointCount() < 1 )
557 return block;
558
559 bool loopAborted = false;
560 QEventLoop loop;
561 QgsPointCloudBlockRequest *req = pc->asyncNodeData( n, request );
562 QObject::connect( req, &QgsPointCloudBlockRequest::finished, &loop, &QEventLoop::quit );
563 QObject::connect( context.feedback(), &QgsFeedback::canceled, &loop, [&]() {
564 loopAborted = true;
565 loop.quit();
566 } );
567 loop.exec();
568
569 if ( !loopAborted )
570 block = req->takeBlock();
571 }
572 return block;
573}
574
575//
576
577QgsSingleColorPointCloud3DSymbolHandler::QgsSingleColorPointCloud3DSymbolHandler()
578 : QgsPointCloud3DSymbolHandler()
579{
580}
581
582bool QgsSingleColorPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
583{
584 Q_UNUSED( context )
585 return true;
586}
587
588void QgsSingleColorPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, PointData *output )
589{
590 QgsPointCloudAttributeCollection attributes;
591 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
592 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
593 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
594
595 QgsPointCloudRequest request;
596 request.setAttributes( attributes );
597 request.setFilterRect( context.layerExtent() );
598 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
599 if ( !block )
600 return;
601
602 const char *ptr = block->data();
603 const int count = block->pointCount();
604 const std::size_t recordSize = block->attributes().pointRecordSize();
605 const QgsVector3D blockScale = block->scale();
606 const QgsVector3D blockOffset = block->offset();
607 const double zValueScale = context.zValueScale();
608 const double zValueOffset = context.zValueFixedOffset();
609 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
610 bool alreadyPrintedDebug = false;
611
612 if ( !output )
613 output = &outNormal;
614
615 output->positionsOrigin = originFromNodeBounds( pc, n, context );
616
617 for ( int i = 0; i < count; ++i )
618 {
619 if ( context.isCanceled() )
620 break;
621
622 const qint32 ix = *( qint32 * ) ( ptr + i * recordSize + 0 );
623 const qint32 iy = *( qint32 * ) ( ptr + i * recordSize + 4 );
624 const qint32 iz = *( qint32 * ) ( ptr + i * recordSize + 8 );
625
626 double x = blockOffset.x() + blockScale.x() * ix;
627 double y = blockOffset.y() + blockScale.y() * iy;
628 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
629 try
630 {
631 coordinateTransform.transformInPlace( x, y, z );
632 }
633 catch ( QgsCsException &e )
634 {
635 if ( !alreadyPrintedDebug )
636 {
637 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
638 alreadyPrintedDebug = true;
639 }
640 }
641 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
642 output->positions.push_back( point.toVector3D() );
643 }
644}
645
646void QgsSingleColorPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
647{
648 makeEntity( parent, context, outNormal, false );
649}
650
651Qt3DQGeometry *QgsSingleColorPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
652{
653 return new QgsSingleColorPointCloud3DGeometry( parent, data, byteStride );
654}
655
656QgsColorRampPointCloud3DSymbolHandler::QgsColorRampPointCloud3DSymbolHandler()
657 : QgsPointCloud3DSymbolHandler()
658{
659}
660
661bool QgsColorRampPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
662{
663 Q_UNUSED( context )
664 return true;
665}
666
667void QgsColorRampPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, PointData *output )
668{
669 QgsPointCloudAttributeCollection attributes;
670 const int xOffset = 0;
671 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
672 const int yOffset = attributes.pointRecordSize();
673 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
674 const int zOffset = attributes.pointRecordSize();
675 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
676
677 QString attributeName;
678 bool attrIsX = false;
679 bool attrIsY = false;
680 bool attrIsZ = false;
681 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
682 int attributeOffset = 0;
683 const double zValueScale = context.zValueScale();
684 const double zValueOffset = context.zValueFixedOffset();
685 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
686 bool alreadyPrintedDebug = false;
687
688 QgsColorRampPointCloud3DSymbol *symbol = dynamic_cast<QgsColorRampPointCloud3DSymbol *>( context.symbol() );
689 if ( symbol )
690 {
691 int offset = 0;
692 const QgsPointCloudAttributeCollection collection = context.attributes();
693
694 if ( symbol->attribute() == QLatin1String( "X" ) )
695 {
696 attrIsX = true;
697 }
698 else if ( symbol->attribute() == QLatin1String( "Y" ) )
699 {
700 attrIsY = true;
701 }
702 else if ( symbol->attribute() == QLatin1String( "Z" ) )
703 {
704 attrIsZ = true;
705 }
706 else
707 {
708 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
709 if ( attr )
710 {
711 attributeType = attr->type();
712 attributeName = attr->name();
713 attributeOffset = attributes.pointRecordSize();
714 attributes.push_back( *attr );
715 }
716 }
717 }
718
719 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
720 return;
721
722 QgsPointCloudRequest request;
723 request.setAttributes( attributes );
724 request.setFilterRect( context.layerExtent() );
725 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
726 if ( !block )
727 return;
728
729 const char *ptr = block->data();
730 const int count = block->pointCount();
731 const std::size_t recordSize = block->attributes().pointRecordSize();
732
733 const QgsVector3D blockScale = block->scale();
734 const QgsVector3D blockOffset = block->offset();
735
736 if ( !output )
737 output = &outNormal;
738
739 output->positionsOrigin = originFromNodeBounds( pc, n, context );
740
741 for ( int i = 0; i < count; ++i )
742 {
743 if ( context.isCanceled() )
744 break;
745
746 const qint32 ix = *( qint32 * ) ( ptr + i * recordSize + xOffset );
747 const qint32 iy = *( qint32 * ) ( ptr + i * recordSize + yOffset );
748 const qint32 iz = *( qint32 * ) ( ptr + i * recordSize + zOffset );
749
750 double x = blockOffset.x() + blockScale.x() * ix;
751 double y = blockOffset.y() + blockScale.y() * iy;
752 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
753 try
754 {
755 coordinateTransform.transformInPlace( x, y, z );
756 }
757 catch ( QgsCsException & )
758 {
759 if ( !alreadyPrintedDebug )
760 {
761 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
762 alreadyPrintedDebug = true;
763 }
764 }
765 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
766 output->positions.push_back( point.toVector3D() );
767
768 if ( attrIsX )
769 output->parameter.push_back( x );
770 else if ( attrIsY )
771 output->parameter.push_back( y );
772 else if ( attrIsZ )
773 output->parameter.push_back( z );
774 else
775 {
776 float iParam = 0.0f;
777 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
778 output->parameter.push_back( iParam );
779 }
780 }
781}
782
783void QgsColorRampPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
784{
785 makeEntity( parent, context, outNormal, false );
786}
787
788Qt3DQGeometry *QgsColorRampPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
789{
790 return new QgsColorRampPointCloud3DGeometry( parent, data, byteStride );
791}
792
793QgsRGBPointCloud3DSymbolHandler::QgsRGBPointCloud3DSymbolHandler()
794 : QgsPointCloud3DSymbolHandler()
795{
796}
797
798bool QgsRGBPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
799{
800 Q_UNUSED( context )
801 return true;
802}
803
804void QgsRGBPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, PointData *output )
805{
806 QgsPointCloudAttributeCollection attributes;
807 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
808 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
809 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
810
811 QgsRgbPointCloud3DSymbol *symbol = qgis::down_cast<QgsRgbPointCloud3DSymbol *>( context.symbol() );
812
813 // we have to get the RGB attributes using their real data types -- they aren't always short! (sometimes unsigned short)
814 int attrOffset = 0;
815
816 const int redOffset = attributes.pointRecordSize();
817 const QgsPointCloudAttribute *colorAttribute = context.attributes().find( symbol->redAttribute(), attrOffset );
818 attributes.push_back( *colorAttribute );
819 const QgsPointCloudAttribute::DataType redType = colorAttribute->type();
820
821 const int greenOffset = attributes.pointRecordSize();
822 colorAttribute = context.attributes().find( symbol->greenAttribute(), attrOffset );
823 attributes.push_back( *colorAttribute );
824 const QgsPointCloudAttribute::DataType greenType = colorAttribute->type();
825
826 const int blueOffset = attributes.pointRecordSize();
827 colorAttribute = context.attributes().find( symbol->blueAttribute(), attrOffset );
828 attributes.push_back( *colorAttribute );
829 const QgsPointCloudAttribute::DataType blueType = colorAttribute->type();
830
831 QgsPointCloudRequest request;
832 request.setAttributes( attributes );
833 request.setFilterRect( context.layerExtent() );
834 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
835 if ( !block )
836 return;
837
838 const char *ptr = block->data();
839 const int count = block->pointCount();
840 const std::size_t recordSize = block->attributes().pointRecordSize();
841
842 const QgsVector3D blockScale = block->scale();
843 const QgsVector3D blockOffset = block->offset();
844 const double zValueScale = context.zValueScale();
845 const double zValueOffset = context.zValueFixedOffset();
846 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
847 bool alreadyPrintedDebug = false;
848
849 QgsContrastEnhancement *redContrastEnhancement = symbol->redContrastEnhancement();
850 QgsContrastEnhancement *greenContrastEnhancement = symbol->greenContrastEnhancement();
851 QgsContrastEnhancement *blueContrastEnhancement = symbol->blueContrastEnhancement();
852
853 const bool useRedContrastEnhancement = redContrastEnhancement && redContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
854 const bool useBlueContrastEnhancement = blueContrastEnhancement && blueContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
855 const bool useGreenContrastEnhancement = greenContrastEnhancement && greenContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
856
857 if ( !output )
858 output = &outNormal;
859
860 output->positionsOrigin = originFromNodeBounds( pc, n, context );
861
862 int ir = 0;
863 int ig = 0;
864 int ib = 0;
865 for ( int i = 0; i < count; ++i )
866 {
867 if ( context.isCanceled() )
868 break;
869
870 const qint32 ix = *( qint32 * ) ( ptr + i * recordSize + 0 );
871 const qint32 iy = *( qint32 * ) ( ptr + i * recordSize + 4 );
872 const qint32 iz = *( qint32 * ) ( ptr + i * recordSize + 8 );
873 double x = blockOffset.x() + blockScale.x() * ix;
874 double y = blockOffset.y() + blockScale.y() * iy;
875 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
876 try
877 {
878 coordinateTransform.transformInPlace( x, y, z );
879 }
880 catch ( QgsCsException & )
881 {
882 if ( !alreadyPrintedDebug )
883 {
884 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
885 alreadyPrintedDebug = true;
886 }
887 }
888 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
889
890 QVector3D color( 0.0f, 0.0f, 0.0f );
891
892 context.getAttribute( ptr, i * recordSize + redOffset, redType, ir );
893 context.getAttribute( ptr, i * recordSize + greenOffset, greenType, ig );
894 context.getAttribute( ptr, i * recordSize + blueOffset, blueType, ib );
895
896 //skip if red, green or blue not in displayable range
897 if ( ( useRedContrastEnhancement && !redContrastEnhancement->isValueInDisplayableRange( ir ) )
898 || ( useGreenContrastEnhancement && !greenContrastEnhancement->isValueInDisplayableRange( ig ) )
899 || ( useBlueContrastEnhancement && !blueContrastEnhancement->isValueInDisplayableRange( ib ) ) )
900 {
901 continue;
902 }
903
904 //stretch color values
905 if ( useRedContrastEnhancement )
906 {
907 ir = redContrastEnhancement->enhanceContrast( ir );
908 }
909 if ( useGreenContrastEnhancement )
910 {
911 ig = greenContrastEnhancement->enhanceContrast( ig );
912 }
913 if ( useBlueContrastEnhancement )
914 {
915 ib = blueContrastEnhancement->enhanceContrast( ib );
916 }
917
918 color.setX( ir / 255.0f );
919 color.setY( ig / 255.0f );
920 color.setZ( ib / 255.0f );
921
922 output->positions.push_back( point.toVector3D() );
923 output->colors.push_back( color );
924 }
925}
926
927void QgsRGBPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
928{
929 makeEntity( parent, context, outNormal, false );
930}
931
932Qt3DQGeometry *QgsRGBPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
933{
934 return new QgsRGBPointCloud3DGeometry( parent, data, byteStride );
935}
936
937QgsClassificationPointCloud3DSymbolHandler::QgsClassificationPointCloud3DSymbolHandler()
938 : QgsPointCloud3DSymbolHandler()
939{
940}
941
942bool QgsClassificationPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
943{
944 Q_UNUSED( context )
945 return true;
946}
947
948void QgsClassificationPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const QgsPointCloudNodeId &n, const QgsPointCloud3DRenderContext &context, PointData *output )
949{
950 QgsPointCloudAttributeCollection attributes;
951 const int xOffset = 0;
952 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
953 const int yOffset = attributes.pointRecordSize();
954 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
955 const int zOffset = attributes.pointRecordSize();
956 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
957
958 QString attributeName;
959 bool attrIsX = false;
960 bool attrIsY = false;
961 bool attrIsZ = false;
962 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
963 int attributeOffset = 0;
964 QgsClassificationPointCloud3DSymbol *symbol = dynamic_cast<QgsClassificationPointCloud3DSymbol *>( context.symbol() );
965 if ( !symbol )
966 return;
967
968 int offset = 0;
969 const QgsPointCloudAttributeCollection collection = context.attributes();
970
971 if ( symbol->attribute() == QLatin1String( "X" ) )
972 {
973 attrIsX = true;
974 }
975 else if ( symbol->attribute() == QLatin1String( "Y" ) )
976 {
977 attrIsY = true;
978 }
979 else if ( symbol->attribute() == QLatin1String( "Z" ) )
980 {
981 attrIsZ = true;
982 }
983 else
984 {
985 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
986 if ( attr )
987 {
988 attributeType = attr->type();
989 attributeName = attr->name();
990 attributeOffset = attributes.pointRecordSize();
991 attributes.push_back( *attr );
992 }
993 }
994
995 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
996 return;
997
998 QgsPointCloudRequest request;
999 request.setAttributes( attributes );
1000 request.setFilterRect( context.layerExtent() );
1001 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
1002 if ( !block )
1003 return;
1004
1005 const char *ptr = block->data();
1006 const int count = block->pointCount();
1007 const std::size_t recordSize = block->attributes().pointRecordSize();
1008
1009 const QgsVector3D blockScale = block->scale();
1010 const QgsVector3D blockOffset = block->offset();
1011 const double zValueScale = context.zValueScale();
1012 const double zValueOffset = context.zValueFixedOffset();
1013 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
1014 bool alreadyPrintedDebug = false;
1015
1016 QList<QgsPointCloudCategory> categoriesList = symbol->categoriesList();
1017 QVector<int> categoriesValues;
1018 QHash<int, double> categoriesPointSizes;
1019 for ( QgsPointCloudCategory &c : categoriesList )
1020 {
1021 categoriesValues.push_back( c.value() );
1022 categoriesPointSizes.insert( c.value(), c.pointSize() > 0 ? c.pointSize() : context.symbol() ? context.symbol()->pointSize()
1023 : 1.0 );
1024 }
1025
1026 if ( !output )
1027 output = &outNormal;
1028
1029 output->positionsOrigin = originFromNodeBounds( pc, n, context );
1030
1031 const QSet<int> filteredOutValues = context.getFilteredOutValues();
1032 for ( int i = 0; i < count; ++i )
1033 {
1034 if ( context.isCanceled() )
1035 break;
1036
1037 const qint32 ix = *( qint32 * ) ( ptr + i * recordSize + xOffset );
1038 const qint32 iy = *( qint32 * ) ( ptr + i * recordSize + yOffset );
1039 const qint32 iz = *( qint32 * ) ( ptr + i * recordSize + zOffset );
1040
1041 double x = blockOffset.x() + blockScale.x() * ix;
1042 double y = blockOffset.y() + blockScale.y() * iy;
1043 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
1044 try
1045 {
1046 coordinateTransform.transformInPlace( x, y, z );
1047 }
1048 catch ( QgsCsException & )
1049 {
1050 if ( !alreadyPrintedDebug )
1051 {
1052 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
1053 alreadyPrintedDebug = true;
1054 }
1055 }
1056 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
1057 float iParam = 0.0f;
1058 if ( attrIsX )
1059 iParam = x;
1060 else if ( attrIsY )
1061 iParam = y;
1062 else if ( attrIsZ )
1063 iParam = z;
1064 else
1065 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
1066
1067 if ( filteredOutValues.contains( ( int ) iParam ) || !categoriesValues.contains( ( int ) iParam ) )
1068 continue;
1069 output->positions.push_back( point.toVector3D() );
1070
1071 // find iParam actual index in the categories list
1072 float iParam2 = categoriesValues.indexOf( ( int ) iParam ) + 1;
1073 output->parameter.push_back( iParam2 );
1074 output->pointSizes.push_back( categoriesPointSizes.value( ( int ) iParam ) );
1075 }
1076}
1077
1078void QgsClassificationPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
1079{
1080 makeEntity( parent, context, outNormal, false );
1081}
1082
1083Qt3DQGeometry *QgsClassificationPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
1084{
1085 return new QgsClassificationPointCloud3DGeometry( parent, data, byteStride );
1086}
1087
QgsBox3D
A 3-dimensional box composed of x, y, z coordinates.
Definition qgsbox3d.h:43
QgsBox3D::xMinimum
double xMinimum() const
Returns the minimum x value.
Definition qgsbox3d.h:211
QgsBox3D::contains
bool contains(const QgsBox3D &other) const
Returns true when box contains other box.
Definition qgsbox3d.cpp:161
QgsBox3D::width
double width() const
Returns the width of the box.
Definition qgsbox3d.h:293
QgsBox3D::zMinimum
double zMinimum() const
Returns the minimum z value.
Definition qgsbox3d.h:267
QgsBox3D::yMinimum
double yMinimum() const
Returns the minimum y value.
Definition qgsbox3d.h:239
QgsBox3D::height
double height() const
Returns the height of the box.
Definition qgsbox3d.h:300
QgsClassificationPointCloud3DSymbol::categoriesList
QgsPointCloudCategoryList categoriesList() const
Returns the list of categories of the classification.
Definition qgspointcloud3dsymbol.h:494
QgsClassificationPointCloud3DSymbol::attribute
QString attribute() const
Returns the attribute used to select the color of the point cloud.
Definition qgspointcloud3dsymbol.cpp:526
QgsColorRampPointCloud3DSymbol::attribute
QString attribute() const
Returns the attribute used to select the color of the point cloud.
Definition qgspointcloud3dsymbol.cpp:224
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:385
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:42
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:103
QgsPointCloud3DRenderContext::getFilteredOutValues
QSet< int > getFilteredOutValues() const
Returns a set containing the filtered out values.
Definition qgspointcloudlayer3drenderer.cpp:55
QgsPointCloud3DRenderContext::symbol
QgsPointCloud3DSymbol * symbol() const
Returns the symbol used for rendering the point cloud.
Definition qgspointcloudlayer3drenderer.h:77
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:151
QgsPointCloud3DRenderContext::feedback
QgsFeedback * feedback() const
Returns the feedback object used to cancel rendering and check if rendering was canceled.
Definition qgspointcloudlayer3drenderer.h:184
QgsPointCloud3DRenderContext::attributes
QgsPointCloudAttributeCollection attributes() const
Returns the attributes associated with the rendered block.
Definition qgspointcloudlayer3drenderer.h:63
QgsPointCloud3DRenderContext::isCanceled
bool isCanceled() const
Returns true if the rendering is canceled.
Definition qgspointcloudlayer3drenderer.cpp:69
QgsPointCloud3DRenderContext::coordinateTransform
QgsCoordinateTransform coordinateTransform() const
Returns the coordinate transform used to transform points from layer CRS to the map CRS.
Definition qgspointcloudlayer3drenderer.h:179
QgsPointCloud3DRenderContext::layerExtent
QgsRectangle layerExtent() const
Returns the 3D scene's extent in layer crs.
Definition qgspointcloudlayer3drenderer.h:190
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:158
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::fillMaterial
virtual void fillMaterial(QgsMaterial *material)=0SIP_SKIP
Used to fill material object with necessary QParameters (and consequently opengl uniforms)
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::renderAsTriangles
bool renderAsTriangles() const
Returns whether points are triangulated to render solid surface.
Definition qgspointcloud3dsymbol.cpp:40
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:141
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:186
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:63
QgsPointCloudAttribute::type
DataType type() const
Returns the data type.
Definition qgspointcloudattribute.h:73
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:210
QgsPointCloudIndex::span
int span() const
Returns the number of points in one direction in a single node.
Definition qgspointcloudindex.cpp:216
QgsPointCloudIndex::Remote
@ Remote
Remote means it's loaded through a protocol like HTTP.
Definition qgspointcloudindex.h:216
QgsPointCloudIndex::Local
@ Local
Local means the source is a local file on the machine.
Definition qgspointcloudindex.h:215
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::asyncNodeData
virtual QgsPointCloudBlockRequest * asyncNodeData(const QgsPointCloudNodeId &n, const QgsPointCloudRequest &request)=0
Returns a handle responsible for loading a node data block.
QgsPointCloudIndex::getNode
virtual QgsPointCloudNode getNode(const QgsPointCloudNodeId &id) const
Returns object for a given node.
Definition qgspointcloudindex.cpp:166
QgsPointCloudIndex::nodeData
virtual std::unique_ptr< QgsPointCloudBlock > nodeData(const QgsPointCloudNodeId &n, const QgsPointCloudRequest &request)=0
Returns node data block.
QgsPointCloudNodeId
Represents a indexed point cloud node's position in octree.
Definition qgspointcloudindex.h:59
QgsPointCloudNodeId::d
int d() const
Returns d.
Definition qgspointcloudindex.cpp:66
QgsPointCloudNodeId::parentNode
QgsPointCloudNodeId parentNode() const
Returns the parent of the node.
Definition qgspointcloudindex.cpp:48
QgsPointCloudNode
Keeps metadata for indexed point cloud node.
Definition qgspointcloudindex.h:158
QgsPointCloudNode::pointCount
qint64 pointCount() const
Returns number of points contained in node data.
Definition qgspointcloudindex.h:180
QgsPointCloudNode::bounds
QgsBox3D bounds() const
Returns node's bounding cube in CRS coords.
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:65
QgsPointCloudRequest::setAttributes
void setAttributes(const QgsPointCloudAttributeCollection &attributes)
Set attributes filter in the request.
Definition qgspointcloudrequest.cpp:35
QgsRectangle
A rectangle specified with double values.
Definition qgsrectangle.h:42
QgsRectangle::contains
bool contains(const QgsRectangle &rect) const
Returns true when rectangle contains other rectangle.
Definition qgsrectangle.h:403
QgsRectangle::grow
void grow(double delta)
Grows the rectangle in place by the specified amount.
Definition qgsrectangle.h:320
QgsRgbPointCloud3DSymbol::blueAttribute
QString blueAttribute() const
Returns the attribute to use for the blue channel.
Definition qgspointcloud3dsymbol.cpp:412
QgsRgbPointCloud3DSymbol::greenAttribute
QString greenAttribute() const
Returns the attribute to use for the green channel.
Definition qgspointcloud3dsymbol.cpp:402
QgsRgbPointCloud3DSymbol::blueContrastEnhancement
QgsContrastEnhancement * blueContrastEnhancement()
Returns the contrast enhancement to use for the blue channel.
Definition qgspointcloud3dsymbol.cpp:442
QgsRgbPointCloud3DSymbol::redAttribute
QString redAttribute() const
Returns the attribute to use for the red channel.
Definition qgspointcloud3dsymbol.cpp:392
QgsRgbPointCloud3DSymbol::greenContrastEnhancement
QgsContrastEnhancement * greenContrastEnhancement()
Returns the contrast enhancement to use for the green channel.
Definition qgspointcloud3dsymbol.cpp:432
QgsRgbPointCloud3DSymbol::redContrastEnhancement
QgsContrastEnhancement * redContrastEnhancement()
Returns the contrast enhancement to use for the red channel.
Definition qgspointcloud3dsymbol.cpp:422
QgsVector3D
Class for storage of 3D vectors similar to QVector3D, with the difference that it uses double precisi...
Definition qgsvector3d.h:31
QgsVector3D::y
double y() const
Returns Y coordinate.
Definition qgsvector3d.h:50
QgsVector3D::z
double z() const
Returns Z coordinate.
Definition qgsvector3d.h:52
QgsVector3D::toVector3D
QVector3D toVector3D() const
Converts the current object to QVector3D.
Definition qgsvector3d.h:196
QgsVector3D::x
double x() const
Returns X coordinate.
Definition qgsvector3d.h:48
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 qgs3dexportobject.cpp:31
Qt3DQBuffer
Qt3DCore::QBuffer Qt3DQBuffer
Definition qgs3dexportobject.cpp:32
Qt3DQGeometry
Qt3DCore::QGeometry Qt3DQGeometry
Definition qgs3dsceneexporter.cpp:39
QgsDebugMsgLevel
#define QgsDebugMsgLevel(str, level)
Definition qgslogger.h:39
QgsDebugError
#define QgsDebugError(str)
Definition qgslogger.h:38
qgspointcloud3dsymbol_p.h
Generated on Thu Dec 26 2024 02:19:01 for QGIS API Documentation by doxygen 1.9.8