QGIS API Documentation 3.41.0-Master (45a0abf3bec)
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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#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
29#include <Qt3DCore/QEntity>
30#include <Qt3DRender/QGeometryRenderer>
31#include <Qt3DRender/QParameter>
32#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
33#include <Qt3DRender/QAttribute>
34#include <Qt3DRender/QBuffer>
35#include <Qt3DRender/QGeometry>
36
37typedef Qt3DRender::QAttribute Qt3DQAttribute;
38typedef Qt3DRender::QBuffer Qt3DQBuffer;
39typedef Qt3DRender::QGeometry Qt3DQGeometry;
40#else
41#include <Qt3DCore/QAttribute>
42#include <Qt3DCore/QBuffer>
43#include <Qt3DCore/QGeometry>
44
45typedef Qt3DCore::QAttribute Qt3DQAttribute;
46typedef Qt3DCore::QBuffer Qt3DQBuffer;
47typedef Qt3DCore::QGeometry Qt3DQGeometry;
48#endif
49#include <Qt3DRender/QTechnique>
50#include <Qt3DRender/QShaderProgram>
51#include <Qt3DRender/QGraphicsApiFilter>
52#include <Qt3DRender/QEffect>
53#include <QPointSize>
54#include <QUrl>
55
56#include <delaunator.hpp>
57
58// pick a point that we'll use as origin for coordinates for this node's points
59static QgsVector3D originFromNodeBounds( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, const QgsPointCloudBlock *block )
60{
61 const QgsVector3D blockScale = block->scale();
62 const QgsVector3D blockOffset = block->offset();
63
64 QgsPointCloudDataBounds bounds = pc->nodeBounds( n );
65 double nodeOriginX = bounds.xMin() * blockScale.x() + blockOffset.x();
66 double nodeOriginY = bounds.yMin() * blockScale.y() + blockOffset.y();
67 double nodeOriginZ = ( bounds.zMin() * blockScale.z() + blockOffset.z() ) * context.zValueScale() + context.zValueFixedOffset();
68 try
69 {
70 context.coordinateTransform().transformInPlace( nodeOriginX, nodeOriginY, nodeOriginZ );
71 }
72 catch ( QgsCsException & )
73 {
74 QgsDebugError( QStringLiteral( "Error transforming node origin point" ) );
75 }
76 return QgsVector3D( nodeOriginX, nodeOriginY, nodeOriginZ );
77}
78
79
80QgsPointCloud3DGeometry::QgsPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
81 : Qt3DQGeometry( parent )
82 , mPositionAttribute( new Qt3DQAttribute( this ) )
83 , mParameterAttribute( new Qt3DQAttribute( this ) )
84 , mPointSizeAttribute( new Qt3DQAttribute( this ) )
85 , mColorAttribute( new Qt3DQAttribute( this ) )
86 , mTriangleIndexAttribute( new Qt3DQAttribute( this ) )
87 , mNormalsAttribute( new Qt3DQAttribute( this ) )
88 , mVertexBuffer( new Qt3DQBuffer( this ) )
89 , mByteStride( byteStride )
90{
91 if ( !data.triangles.isEmpty() )
92 {
93 mTriangleBuffer = new Qt3DQBuffer( this );
94 mTriangleIndexAttribute->setAttributeType( Qt3DQAttribute::IndexAttribute );
95 mTriangleIndexAttribute->setBuffer( mTriangleBuffer );
96 mTriangleIndexAttribute->setVertexBaseType( Qt3DQAttribute::UnsignedInt );
97 mTriangleBuffer->setData( data.triangles );
98 mTriangleIndexAttribute->setCount( data.triangles.size() / sizeof( quint32 ) );
99 addAttribute( mTriangleIndexAttribute );
100 }
101
102 if ( !data.normals.isEmpty() )
103 {
104 mNormalsBuffer = new Qt3DQBuffer( this );
105 mNormalsAttribute->setName( Qt3DQAttribute::defaultNormalAttributeName() );
106 mNormalsAttribute->setVertexBaseType( Qt3DQAttribute::Float );
107 mNormalsAttribute->setVertexSize( 3 );
108 mNormalsAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
109 mNormalsAttribute->setBuffer( mNormalsBuffer );
110 mNormalsBuffer->setData( data.normals );
111 mNormalsAttribute->setCount( data.normals.size() / ( 3 * sizeof( float ) ) );
112 addAttribute( mNormalsAttribute );
113 }
114}
115
116QgsSingleColorPointCloud3DGeometry::QgsSingleColorPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
117 : QgsPointCloud3DGeometry( parent, data, byteStride )
118{
119 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
120 mPositionAttribute->setBuffer( mVertexBuffer );
121 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
122 mPositionAttribute->setVertexSize( 3 );
123 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
124 mPositionAttribute->setByteOffset( 0 );
125 mPositionAttribute->setByteStride( mByteStride );
126 addAttribute( mPositionAttribute );
127 makeVertexBuffer( data );
128}
129
130void QgsSingleColorPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
131{
132 QByteArray vertexBufferData;
133 vertexBufferData.resize( data.positions.size() * mByteStride );
134 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
135 int idx = 0;
136 for ( int i = 0; i < data.positions.size(); ++i )
137 {
138 rawVertexArray[idx++] = data.positions.at( i ).x();
139 rawVertexArray[idx++] = data.positions.at( i ).y();
140 rawVertexArray[idx++] = data.positions.at( i ).z();
141 }
142
143 mVertexCount = data.positions.size();
144 mVertexBuffer->setData( vertexBufferData );
145}
146
147QgsColorRampPointCloud3DGeometry::QgsColorRampPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
148 : QgsPointCloud3DGeometry( parent, data, byteStride )
149{
150 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
151 mPositionAttribute->setBuffer( mVertexBuffer );
152 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
153 mPositionAttribute->setVertexSize( 3 );
154 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
155 mPositionAttribute->setByteOffset( 0 );
156 mPositionAttribute->setByteStride( mByteStride );
157 addAttribute( mPositionAttribute );
158 mParameterAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
159 mParameterAttribute->setBuffer( mVertexBuffer );
160 mParameterAttribute->setVertexBaseType( Qt3DQAttribute::Float );
161 mParameterAttribute->setVertexSize( 1 );
162 mParameterAttribute->setName( "vertexParameter" );
163 mParameterAttribute->setByteOffset( 12 );
164 mParameterAttribute->setByteStride( mByteStride );
165 addAttribute( mParameterAttribute );
166 makeVertexBuffer( data );
167}
168
169void QgsColorRampPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
170{
171 QByteArray vertexBufferData;
172 vertexBufferData.resize( data.positions.size() * mByteStride );
173 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
174 int idx = 0;
175 Q_ASSERT( data.positions.size() == data.parameter.size() );
176 for ( int i = 0; i < data.positions.size(); ++i )
177 {
178 rawVertexArray[idx++] = data.positions.at( i ).x();
179 rawVertexArray[idx++] = data.positions.at( i ).y();
180 rawVertexArray[idx++] = data.positions.at( i ).z();
181 rawVertexArray[idx++] = data.parameter.at( i );
182 }
183
184 mVertexCount = data.positions.size();
185 mVertexBuffer->setData( vertexBufferData );
186}
187
188QgsRGBPointCloud3DGeometry::QgsRGBPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
189 : QgsPointCloud3DGeometry( parent, data, byteStride )
190{
191 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
192 mPositionAttribute->setBuffer( mVertexBuffer );
193 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
194 mPositionAttribute->setVertexSize( 3 );
195 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
196 mPositionAttribute->setByteOffset( 0 );
197 mPositionAttribute->setByteStride( mByteStride );
198 addAttribute( mPositionAttribute );
199 mColorAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
200 mColorAttribute->setBuffer( mVertexBuffer );
201 mColorAttribute->setVertexBaseType( Qt3DQAttribute::Float );
202 mColorAttribute->setVertexSize( 3 );
203 mColorAttribute->setName( QStringLiteral( "vertexColor" ) );
204 mColorAttribute->setByteOffset( 12 );
205 mColorAttribute->setByteStride( mByteStride );
206 addAttribute( mColorAttribute );
207 makeVertexBuffer( data );
208}
209
210void QgsRGBPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
211{
212 QByteArray vertexBufferData;
213 vertexBufferData.resize( data.positions.size() * mByteStride );
214 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
215 int idx = 0;
216 Q_ASSERT( data.positions.size() == data.colors.size() );
217 for ( int i = 0; i < data.positions.size(); ++i )
218 {
219 rawVertexArray[idx++] = data.positions.at( i ).x();
220 rawVertexArray[idx++] = data.positions.at( i ).y();
221 rawVertexArray[idx++] = data.positions.at( i ).z();
222 rawVertexArray[idx++] = data.colors.at( i ).x();
223 rawVertexArray[idx++] = data.colors.at( i ).y();
224 rawVertexArray[idx++] = data.colors.at( i ).z();
225 }
226 mVertexCount = data.positions.size();
227 mVertexBuffer->setData( vertexBufferData );
228}
229
230QgsClassificationPointCloud3DGeometry::QgsClassificationPointCloud3DGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
231 : QgsPointCloud3DGeometry( parent, data, byteStride )
232{
233 mPositionAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
234 mPositionAttribute->setBuffer( mVertexBuffer );
235 mPositionAttribute->setVertexBaseType( Qt3DQAttribute::Float );
236 mPositionAttribute->setVertexSize( 3 );
237 mPositionAttribute->setName( Qt3DQAttribute::defaultPositionAttributeName() );
238 mPositionAttribute->setByteOffset( 0 );
239 mPositionAttribute->setByteStride( mByteStride );
240 addAttribute( mPositionAttribute );
241 mParameterAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
242 mParameterAttribute->setBuffer( mVertexBuffer );
243 mParameterAttribute->setVertexBaseType( Qt3DQAttribute::Float );
244 mParameterAttribute->setVertexSize( 1 );
245 mParameterAttribute->setName( "vertexParameter" );
246 mParameterAttribute->setByteOffset( 12 );
247 mParameterAttribute->setByteStride( mByteStride );
248 addAttribute( mParameterAttribute );
249 mPointSizeAttribute->setAttributeType( Qt3DQAttribute::VertexAttribute );
250 mPointSizeAttribute->setBuffer( mVertexBuffer );
251 mPointSizeAttribute->setVertexBaseType( Qt3DQAttribute::Float );
252 mPointSizeAttribute->setVertexSize( 1 );
253 mPointSizeAttribute->setName( "vertexSize" );
254 mPointSizeAttribute->setByteOffset( 16 );
255 mPointSizeAttribute->setByteStride( mByteStride );
256 addAttribute( mPointSizeAttribute );
257 makeVertexBuffer( data );
258}
259
260void QgsClassificationPointCloud3DGeometry::makeVertexBuffer( const QgsPointCloud3DSymbolHandler::PointData &data )
261{
262 QByteArray vertexBufferData;
263 vertexBufferData.resize( data.positions.size() * mByteStride );
264 float *rawVertexArray = reinterpret_cast<float *>( vertexBufferData.data() );
265 int idx = 0;
266 Q_ASSERT( data.positions.size() == data.parameter.size() );
267 Q_ASSERT( data.positions.size() == data.pointSizes.size() );
268 for ( int i = 0; i < data.positions.size(); ++i )
269 {
270 rawVertexArray[idx++] = data.positions.at( i ).x();
271 rawVertexArray[idx++] = data.positions.at( i ).y();
272 rawVertexArray[idx++] = data.positions.at( i ).z();
273 rawVertexArray[idx++] = data.parameter.at( i );
274 rawVertexArray[idx++] = data.pointSizes.at( i );
275 }
276
277 mVertexCount = data.positions.size();
278 mVertexBuffer->setData( vertexBufferData );
279}
280
281QgsPointCloud3DSymbolHandler::QgsPointCloud3DSymbolHandler()
282{
283}
284
285
286void QgsPointCloud3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context, const QgsPointCloud3DSymbolHandler::PointData &out, bool selected )
287{
288 Q_UNUSED( selected )
289
290 if ( out.positions.empty() )
291 return;
292
293 // Geometry
294 Qt3DQGeometry *geom = makeGeometry( parent, out, context.symbol()->byteStride() );
295 Qt3DRender::QGeometryRenderer *gr = new Qt3DRender::QGeometryRenderer;
296 if ( context.symbol()->renderAsTriangles() && ! out.triangles.isEmpty() )
297 {
298 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Triangles );
299 gr->setVertexCount( out.triangles.size() / sizeof( quint32 ) );
300 }
301 else
302 {
303 gr->setPrimitiveType( Qt3DRender::QGeometryRenderer::Points );
304 gr->setVertexCount( out.positions.count() );
305 }
306 gr->setGeometry( geom );
307
308 // Transform: chunks are using coordinates relative to chunk origin, with X,Y,Z axes being the same
309 // as map coordinates, so we need to rotate and translate entities to get them into world coordinates
310 Qt3DCore::QTransform *tr = new Qt3DCore::QTransform;
311 QVector3D nodeTranslation = ( out.positionsOrigin - context.origin() ).toVector3D();
312 tr->setTranslation( nodeTranslation );
313
314 // Material
315 QgsMaterial *mat = new QgsMaterial;
316 if ( context.symbol() )
317 context.symbol()->fillMaterial( mat );
318
319 Qt3DRender::QShaderProgram *shaderProgram = new Qt3DRender::QShaderProgram( mat );
320 shaderProgram->setVertexShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.vert" ) ) ) );
321 shaderProgram->setFragmentShaderCode( Qt3DRender::QShaderProgram::loadSource( QUrl( QStringLiteral( "qrc:/shaders/pointcloud.frag" ) ) ) );
322
323 Qt3DRender::QRenderPass *renderPass = new Qt3DRender::QRenderPass( mat );
324 renderPass->setShaderProgram( shaderProgram );
325
326 if ( out.triangles.isEmpty() )
327 {
328 Qt3DRender::QPointSize *pointSize = new Qt3DRender::QPointSize( renderPass );
329 pointSize->setSizeMode( Qt3DRender::QPointSize::Programmable ); // supported since OpenGL 3.2
330 renderPass->addRenderState( pointSize );
331 }
332
333 // without this filter the default forward renderer would not render this
334 Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
335 filterKey->setName( QStringLiteral( "renderingStyle" ) );
336 filterKey->setValue( "forward" );
337
338 Qt3DRender::QTechnique *technique = new Qt3DRender::QTechnique;
339 technique->addRenderPass( renderPass );
340 technique->addFilterKey( filterKey );
341 technique->graphicsApiFilter()->setApi( Qt3DRender::QGraphicsApiFilter::OpenGL );
342 technique->graphicsApiFilter()->setProfile( Qt3DRender::QGraphicsApiFilter::CoreProfile );
343 technique->graphicsApiFilter()->setMajorVersion( 3 );
344 technique->graphicsApiFilter()->setMinorVersion( 1 );
345 technique->addParameter( new Qt3DRender::QParameter( "triangulate", !out.triangles.isEmpty() ) );
346
347 Qt3DRender::QEffect *eff = new Qt3DRender::QEffect;
348 eff->addTechnique( technique );
349 mat->setEffect( eff );
350
351 // All together
352 Qt3DCore::QEntity *entity = new Qt3DCore::QEntity;
353 entity->addComponent( gr );
354 entity->addComponent( tr );
355 entity->addComponent( mat );
356 entity->setParent( parent );
357 // cppcheck wrongly believes entity will leak
358 // cppcheck-suppress memleak
359}
360
361
362std::vector<double> QgsPointCloud3DSymbolHandler::getVertices( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
363{
364
365 bool hasColorData = !outNormal.colors.empty();
366 bool hasParameterData = !outNormal.parameter.empty();
367 bool hasPointSizeData = !outNormal.pointSizes.empty();
368
369 // first, get the points of the concerned node
370 std::vector<double> vertices( outNormal.positions.size() * 2 );
371 size_t idx = 0;
372 for ( int i = 0; i < outNormal.positions.size(); ++i )
373 {
374 vertices[idx++] = outNormal.positions.at( i ).x();
375 vertices[idx++] = -outNormal.positions.at( i ).y(); // flipping y to have correctly oriented triangles from delaunator
376 }
377
378 // next, we also need all points of all parents nodes to make the triangulation (also external points)
379 IndexedPointCloudNode parentNode = n.parentNode();
380
381 double span = pc->span();
382 //factor to take account of the density of the point to calculate extension of the bounding box
383 // with a usual value span = 128, bounding box is extended by 12.5 % on each side.
384 double extraBoxFactor = 16 / span;
385
386 // We keep all points in vertical direction to avoid odd triangulation if points are isolated on top
387 QgsRectangle rectRelativeToChunkOrigin = ( box3D - outNormal.positionsOrigin ).toRectangle();
388 rectRelativeToChunkOrigin.grow( extraBoxFactor * std::max( box3D.width(), box3D.height() ) );
389
390 PointData filteredExtraPointData;
391 while ( parentNode.d() >= 0 )
392 {
393 PointData outputParent;
394 processNode( pc, parentNode, context, &outputParent );
395
396 // the "main" chunk and each parent chunks have their origins
397 QVector3D originDifference = ( outputParent.positionsOrigin - outNormal.positionsOrigin ).toVector3D();
398
399 for ( int i = 0; i < outputParent.positions.count(); ++i )
400 {
401 const QVector3D pos = outputParent.positions.at( i ) + originDifference;
402 if ( rectRelativeToChunkOrigin.contains( pos.x(), pos.y() ) )
403 {
404 filteredExtraPointData.positions.append( pos );
405 vertices.push_back( pos.x() );
406 vertices.push_back( -pos.y() ); // flipping y to have correctly oriented triangles from delaunator
407
408 if ( hasColorData )
409 filteredExtraPointData.colors.append( outputParent.colors.at( i ) );
410 if ( hasParameterData )
411 filteredExtraPointData.parameter.append( outputParent.parameter.at( i ) );
412 if ( hasPointSizeData )
413 filteredExtraPointData.pointSizes.append( outputParent.pointSizes.at( i ) );
414 }
415 }
416
417 parentNode = parentNode.parentNode();
418 }
419
420 outNormal.positions.append( filteredExtraPointData.positions );
421 outNormal.colors.append( filteredExtraPointData.colors );
422 outNormal.parameter.append( filteredExtraPointData.parameter );
423 outNormal.pointSizes.append( filteredExtraPointData.pointSizes );
424
425 return vertices;
426}
427
428void QgsPointCloud3DSymbolHandler::calculateNormals( const std::vector<size_t> &triangles )
429{
430 QVector<QVector3D> normals( outNormal.positions.count(), QVector3D( 0.0, 0.0, 0.0 ) );
431 for ( size_t i = 0; i < triangles.size(); i += 3 )
432 {
433 QVector<QVector3D> triangleVertices( 3 );
434 for ( size_t j = 0; j < 3; ++j )
435 {
436 size_t vertIndex = triangles.at( i + j );
437 triangleVertices[j] = outNormal.positions.at( vertIndex );
438 }
439 //calculate normals
440 for ( size_t j = 0; j < 3; ++j )
441 normals[triangles.at( i + j )] += QVector3D::crossProduct(
442 triangleVertices.at( 1 ) - triangleVertices.at( 0 ),
443 triangleVertices.at( 2 ) - triangleVertices.at( 0 ) );
444 }
445
446 // Build now normals array
447 outNormal.normals.resize( ( outNormal.positions.count() ) * sizeof( float ) * 3 );
448 float *normPtr = reinterpret_cast<float *>( outNormal.normals.data() );
449 for ( int i = 0; i < normals.size(); ++i )
450 {
451 QVector3D normal = normals.at( i );
452 normal = normal.normalized();
453
454 *normPtr++ = normal.x();
455 *normPtr++ = normal.y();
456 *normPtr++ = normal.z();
457 }
458}
459
460void QgsPointCloud3DSymbolHandler::filterTriangles( const std::vector<size_t> &triangleIndexes, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
461{
462 outNormal.triangles.resize( triangleIndexes.size() * sizeof( quint32 ) );
463 quint32 *indexPtr = reinterpret_cast<quint32 *>( outNormal.triangles.data() );
464 size_t effective = 0;
465
466 bool horizontalFilter = context.symbol()->horizontalTriangleFilter();
467 bool verticalFilter = context.symbol()->verticalTriangleFilter();
468 float horizontalThreshold = context.symbol()->horizontalFilterThreshold();
469 float verticalThreshold = context.symbol()->verticalFilterThreshold();
470
471 QgsBox3D boxRelativeToChunkOrigin = box3D - outNormal.positionsOrigin;
472
473 for ( size_t i = 0; i < triangleIndexes.size(); i += 3 )
474 {
475 bool atLeastOneInBox = false;
476 bool horizontalSkip = false;
477 bool verticalSkip = false;
478 for ( size_t j = 0; j < 3; j++ )
479 {
480 QVector3D pos = outNormal.positions.at( triangleIndexes.at( i + j ) );
481 atLeastOneInBox |= boxRelativeToChunkOrigin.contains( pos.x(), pos.y(), pos.z() );
482
483 if ( verticalFilter || horizontalFilter )
484 {
485 const QVector3D pos2 = outNormal.positions.at( triangleIndexes.at( i + ( j + 1 ) % 3 ) );
486
487 if ( verticalFilter )
488 verticalSkip |= std::fabs( pos.z() - pos2.z() ) > verticalThreshold;
489
490 if ( horizontalFilter && ! verticalSkip )
491 {
492 // filter only in the horizontal plan, it is a 2.5D triangulation.
493 horizontalSkip |= sqrt( std::pow( pos.x() - pos2.x(), 2 ) +
494 std::pow( pos.y() - pos2.y(), 2 ) ) > horizontalThreshold;
495 }
496
497 if ( horizontalSkip || verticalSkip )
498 break;
499 }
500 }
501 if ( atLeastOneInBox && !horizontalSkip && !verticalSkip )
502 {
503 for ( size_t j = 0; j < 3; j++ )
504 {
505 size_t vertIndex = triangleIndexes.at( i + j );
506 *indexPtr++ = quint32( vertIndex );
507 }
508 effective++;
509 }
510 }
511
512 if ( effective != 0 )
513 {
514 outNormal.triangles.resize( effective * 3 * sizeof( quint32 ) );
515 }
516 else
517 {
518 outNormal.triangles.clear();
519 outNormal.normals.clear();
520 }
521}
522
523void QgsPointCloud3DSymbolHandler::triangulate( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, const QgsBox3D &box3D )
524{
525 if ( outNormal.positions.isEmpty() )
526 return;
527
528 // Triangulation happens here
529 std::unique_ptr<delaunator::Delaunator> triangulation;
530 try
531 {
532 std::vector<double> vertices = getVertices( pc, n, context, box3D );
533 triangulation.reset( new delaunator::Delaunator( vertices ) );
534 }
535 catch ( std::exception &e )
536 {
537 // something went wrong, better to retrieve initial state
538 QgsDebugMsgLevel( QStringLiteral( "Error with triangulation" ), 4 );
539 outNormal = PointData();
540 processNode( pc, n, context );
541 return;
542 }
543
544 const std::vector<size_t> &triangleIndexes = triangulation->triangles;
545
546 calculateNormals( triangleIndexes );
547 filterTriangles( triangleIndexes, context, box3D );
548}
549
550std::unique_ptr<QgsPointCloudBlock> QgsPointCloud3DSymbolHandler::pointCloudBlock( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloudRequest &request, const QgsPointCloud3DRenderContext &context )
551{
552 std::unique_ptr<QgsPointCloudBlock> block;
553 if ( pc->accessType() == QgsPointCloudIndex::AccessType::Local )
554 {
555 block = pc->nodeData( n, request );
556 }
557 else if ( pc->accessType() == QgsPointCloudIndex::AccessType::Remote )
558 {
559 if ( pc->nodePointCount( n ) < 1 )
560 return block;
561
562 bool loopAborted = false;
563 QEventLoop loop;
564 QgsPointCloudBlockRequest *req = pc->asyncNodeData( n, request );
565 QObject::connect( req, &QgsPointCloudBlockRequest::finished, &loop, &QEventLoop::quit );
566 QObject::connect( context.feedback(), &QgsFeedback::canceled, &loop, [ & ]()
567 {
568 loopAborted = true;
569 loop.quit();
570 } );
571 loop.exec();
572
573 if ( !loopAborted )
574 block = req->takeBlock();
575 }
576 return block;
577}
578
579//
580
581QgsSingleColorPointCloud3DSymbolHandler::QgsSingleColorPointCloud3DSymbolHandler()
582 : QgsPointCloud3DSymbolHandler()
583{
584
585}
586
587bool QgsSingleColorPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
588{
589 Q_UNUSED( context )
590 return true;
591}
592
593void QgsSingleColorPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, PointData *output )
594{
595 QgsPointCloudAttributeCollection attributes;
596 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
597 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
598 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
599
600 QgsPointCloudRequest request;
601 request.setAttributes( attributes );
602 request.setFilterRect( context.layerExtent() );
603 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
604 if ( !block )
605 return;
606
607 const char *ptr = block->data();
608 const int count = block->pointCount();
609 const std::size_t recordSize = block->attributes().pointRecordSize();
610 const QgsVector3D blockScale = block->scale();
611 const QgsVector3D blockOffset = block->offset();
612 const double zValueScale = context.zValueScale();
613 const double zValueOffset = context.zValueFixedOffset();
614 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
615 bool alreadyPrintedDebug = false;
616
617 if ( !output )
618 output = &outNormal;
619
620 output->positionsOrigin = originFromNodeBounds( pc, n, context, block.get() );
621
622 for ( int i = 0; i < count; ++i )
623 {
624 if ( context.isCanceled() )
625 break;
626
627 const qint32 ix = *( qint32 * )( ptr + i * recordSize + 0 );
628 const qint32 iy = *( qint32 * )( ptr + i * recordSize + 4 );
629 const qint32 iz = *( qint32 * )( ptr + i * recordSize + 8 );
630
631 double x = blockOffset.x() + blockScale.x() * ix;
632 double y = blockOffset.y() + blockScale.y() * iy;
633 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
634 try
635 {
636 coordinateTransform.transformInPlace( x, y, z );
637 }
638 catch ( QgsCsException &e )
639 {
640 if ( !alreadyPrintedDebug )
641 {
642 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
643 alreadyPrintedDebug = true;
644 }
645 }
646 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
647 output->positions.push_back( point.toVector3D() );
648 }
649}
650
651void QgsSingleColorPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
652{
653 makeEntity( parent, context, outNormal, false );
654}
655
656Qt3DQGeometry *QgsSingleColorPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
657{
658 return new QgsSingleColorPointCloud3DGeometry( parent, data, byteStride );
659}
660
661QgsColorRampPointCloud3DSymbolHandler::QgsColorRampPointCloud3DSymbolHandler()
662 : QgsPointCloud3DSymbolHandler()
663{
664
665}
666
667bool QgsColorRampPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
668{
669 Q_UNUSED( context )
670 return true;
671}
672
673void QgsColorRampPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, PointData *output )
674{
675 QgsPointCloudAttributeCollection attributes;
676 const int xOffset = 0;
677 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
678 const int yOffset = attributes.pointRecordSize();
679 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
680 const int zOffset = attributes.pointRecordSize();
681 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
682
683 QString attributeName;
684 bool attrIsX = false;
685 bool attrIsY = false;
686 bool attrIsZ = false;
687 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
688 int attributeOffset = 0;
689 const double zValueScale = context.zValueScale();
690 const double zValueOffset = context.zValueFixedOffset();
691 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
692 bool alreadyPrintedDebug = false;
693
694 QgsColorRampPointCloud3DSymbol *symbol = dynamic_cast<QgsColorRampPointCloud3DSymbol *>( context.symbol() );
695 if ( symbol )
696 {
697 int offset = 0;
698 const QgsPointCloudAttributeCollection collection = context.attributes();
699
700 if ( symbol->attribute() == QLatin1String( "X" ) )
701 {
702 attrIsX = true;
703 }
704 else if ( symbol->attribute() == QLatin1String( "Y" ) )
705 {
706 attrIsY = true;
707 }
708 else if ( symbol->attribute() == QLatin1String( "Z" ) )
709 {
710 attrIsZ = true;
711 }
712 else
713 {
714 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
715 if ( attr )
716 {
717 attributeType = attr->type();
718 attributeName = attr->name();
719 attributeOffset = attributes.pointRecordSize();
720 attributes.push_back( *attr );
721 }
722 }
723 }
724
725 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
726 return;
727
728 QgsPointCloudRequest request;
729 request.setAttributes( attributes );
730 request.setFilterRect( context.layerExtent() );
731 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
732 if ( !block )
733 return;
734
735 const char *ptr = block->data();
736 const int count = block->pointCount();
737 const std::size_t recordSize = block->attributes().pointRecordSize();
738
739 const QgsVector3D blockScale = block->scale();
740 const QgsVector3D blockOffset = block->offset();
741
742 if ( !output )
743 output = &outNormal;
744
745 output->positionsOrigin = originFromNodeBounds( pc, n, context, block.get() );
746
747 for ( int i = 0; i < count; ++i )
748 {
749 if ( context.isCanceled() )
750 break;
751
752 const qint32 ix = *( qint32 * )( ptr + i * recordSize + xOffset );
753 const qint32 iy = *( qint32 * )( ptr + i * recordSize + yOffset );
754 const qint32 iz = *( qint32 * )( ptr + i * recordSize + zOffset );
755
756 double x = blockOffset.x() + blockScale.x() * ix;
757 double y = blockOffset.y() + blockScale.y() * iy;
758 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
759 try
760 {
761 coordinateTransform.transformInPlace( x, y, z );
762 }
763 catch ( QgsCsException & )
764 {
765 if ( !alreadyPrintedDebug )
766 {
767 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
768 alreadyPrintedDebug = true;
769 }
770 }
771 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
772 output->positions.push_back( point.toVector3D() );
773
774 if ( attrIsX )
775 output->parameter.push_back( x );
776 else if ( attrIsY )
777 output->parameter.push_back( y );
778 else if ( attrIsZ )
779 output->parameter.push_back( z );
780 else
781 {
782 float iParam = 0.0f;
783 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
784 output->parameter.push_back( iParam );
785 }
786 }
787}
788
789void QgsColorRampPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
790{
791 makeEntity( parent, context, outNormal, false );
792}
793
794Qt3DQGeometry *QgsColorRampPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
795{
796 return new QgsColorRampPointCloud3DGeometry( parent, data, byteStride );
797}
798
799QgsRGBPointCloud3DSymbolHandler::QgsRGBPointCloud3DSymbolHandler()
800 : QgsPointCloud3DSymbolHandler()
801{
802
803}
804
805bool QgsRGBPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
806{
807 Q_UNUSED( context )
808 return true;
809}
810
811void QgsRGBPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, PointData *output )
812{
813 QgsPointCloudAttributeCollection attributes;
814 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
815 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
816 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
817
818 QgsRgbPointCloud3DSymbol *symbol = dynamic_cast<QgsRgbPointCloud3DSymbol *>( context.symbol() );
819
820 // we have to get the RGB attributes using their real data types -- they aren't always short! (sometimes unsigned short)
821 int attrOffset = 0 ;
822
823 const int redOffset = attributes.pointRecordSize();
824 const QgsPointCloudAttribute *colorAttribute = context.attributes().find( symbol->redAttribute(), attrOffset );
825 attributes.push_back( *colorAttribute );
826 const QgsPointCloudAttribute::DataType redType = colorAttribute->type();
827
828 const int greenOffset = attributes.pointRecordSize();
829 colorAttribute = context.attributes().find( symbol->greenAttribute(), attrOffset );
830 attributes.push_back( *colorAttribute );
831 const QgsPointCloudAttribute::DataType greenType = colorAttribute->type();
832
833 const int blueOffset = attributes.pointRecordSize();
834 colorAttribute = context.attributes().find( symbol->blueAttribute(), attrOffset );
835 attributes.push_back( *colorAttribute );
836 const QgsPointCloudAttribute::DataType blueType = colorAttribute->type();
837
838 QgsPointCloudRequest request;
839 request.setAttributes( attributes );
840 request.setFilterRect( context.layerExtent() );
841 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
842 if ( !block )
843 return;
844
845 const char *ptr = block->data();
846 const int count = block->pointCount();
847 const std::size_t recordSize = block->attributes().pointRecordSize();
848
849 const QgsVector3D blockScale = block->scale();
850 const QgsVector3D blockOffset = block->offset();
851 const double zValueScale = context.zValueScale();
852 const double zValueOffset = context.zValueFixedOffset();
853 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
854 bool alreadyPrintedDebug = false;
855
856 QgsContrastEnhancement *redContrastEnhancement = symbol->redContrastEnhancement();
857 QgsContrastEnhancement *greenContrastEnhancement = symbol->greenContrastEnhancement();
858 QgsContrastEnhancement *blueContrastEnhancement = symbol->blueContrastEnhancement();
859
860 const bool useRedContrastEnhancement = redContrastEnhancement && redContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
861 const bool useBlueContrastEnhancement = blueContrastEnhancement && blueContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
862 const bool useGreenContrastEnhancement = greenContrastEnhancement && greenContrastEnhancement->contrastEnhancementAlgorithm() != QgsContrastEnhancement::NoEnhancement;
863
864 if ( !output )
865 output = &outNormal;
866
867 output->positionsOrigin = originFromNodeBounds( pc, n, context, block.get() );
868
869 int ir = 0;
870 int ig = 0;
871 int ib = 0;
872 for ( int i = 0; i < count; ++i )
873 {
874 if ( context.isCanceled() )
875 break;
876
877 const qint32 ix = *( qint32 * )( ptr + i * recordSize + 0 );
878 const qint32 iy = *( qint32 * )( ptr + i * recordSize + 4 );
879 const qint32 iz = *( qint32 * )( ptr + i * recordSize + 8 );
880 double x = blockOffset.x() + blockScale.x() * ix;
881 double y = blockOffset.y() + blockScale.y() * iy;
882 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
883 try
884 {
885 coordinateTransform.transformInPlace( x, y, z );
886 }
887 catch ( QgsCsException & )
888 {
889 if ( !alreadyPrintedDebug )
890 {
891 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
892 alreadyPrintedDebug = true;
893 }
894 }
895 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
896
897 QVector3D color( 0.0f, 0.0f, 0.0f );
898
899 context.getAttribute( ptr, i * recordSize + redOffset, redType, ir );
900 context.getAttribute( ptr, i * recordSize + greenOffset, greenType, ig );
901 context.getAttribute( ptr, i * recordSize + blueOffset, blueType, ib );
902
903 //skip if red, green or blue not in displayable range
904 if ( ( useRedContrastEnhancement && !redContrastEnhancement->isValueInDisplayableRange( ir ) )
905 || ( useGreenContrastEnhancement && !greenContrastEnhancement->isValueInDisplayableRange( ig ) )
906 || ( useBlueContrastEnhancement && !blueContrastEnhancement->isValueInDisplayableRange( ib ) ) )
907 {
908 continue;
909 }
910
911 //stretch color values
912 if ( useRedContrastEnhancement )
913 {
914 ir = redContrastEnhancement->enhanceContrast( ir );
915 }
916 if ( useGreenContrastEnhancement )
917 {
918 ig = greenContrastEnhancement->enhanceContrast( ig );
919 }
920 if ( useBlueContrastEnhancement )
921 {
922 ib = blueContrastEnhancement->enhanceContrast( ib );
923 }
924
925 color.setX( ir / 255.0f );
926 color.setY( ig / 255.0f );
927 color.setZ( ib / 255.0f );
928
929 output->positions.push_back( point.toVector3D() );
930 output->colors.push_back( color );
931 }
932}
933
934void QgsRGBPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
935{
936 makeEntity( parent, context, outNormal, false );
937}
938
939Qt3DQGeometry *QgsRGBPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
940{
941 return new QgsRGBPointCloud3DGeometry( parent, data, byteStride );
942}
943
944QgsClassificationPointCloud3DSymbolHandler::QgsClassificationPointCloud3DSymbolHandler()
945 : QgsPointCloud3DSymbolHandler()
946{
947
948}
949
950bool QgsClassificationPointCloud3DSymbolHandler::prepare( const QgsPointCloud3DRenderContext &context )
951{
952 Q_UNUSED( context )
953 return true;
954}
955
956void QgsClassificationPointCloud3DSymbolHandler::processNode( QgsPointCloudIndex *pc, const IndexedPointCloudNode &n, const QgsPointCloud3DRenderContext &context, PointData *output )
957{
958 QgsPointCloudAttributeCollection attributes;
959 const int xOffset = 0;
960 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "X" ), QgsPointCloudAttribute::Int32 ) );
961 const int yOffset = attributes.pointRecordSize();
962 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Y" ), QgsPointCloudAttribute::Int32 ) );
963 const int zOffset = attributes.pointRecordSize();
964 attributes.push_back( QgsPointCloudAttribute( QStringLiteral( "Z" ), QgsPointCloudAttribute::Int32 ) );
965
966 QString attributeName;
967 bool attrIsX = false;
968 bool attrIsY = false;
969 bool attrIsZ = false;
970 QgsPointCloudAttribute::DataType attributeType = QgsPointCloudAttribute::Float;
971 int attributeOffset = 0;
972 QgsClassificationPointCloud3DSymbol *symbol = dynamic_cast<QgsClassificationPointCloud3DSymbol *>( context.symbol() );
973 if ( symbol )
974 {
975 int offset = 0;
976 const QgsPointCloudAttributeCollection collection = context.attributes();
977
978 if ( symbol->attribute() == QLatin1String( "X" ) )
979 {
980 attrIsX = true;
981 }
982 else if ( symbol->attribute() == QLatin1String( "Y" ) )
983 {
984 attrIsY = true;
985 }
986 else if ( symbol->attribute() == QLatin1String( "Z" ) )
987 {
988 attrIsZ = true;
989 }
990 else
991 {
992 const QgsPointCloudAttribute *attr = collection.find( symbol->attribute(), offset );
993 if ( attr )
994 {
995 attributeType = attr->type();
996 attributeName = attr->name();
997 attributeOffset = attributes.pointRecordSize();
998 attributes.push_back( *attr );
999 }
1000 }
1001 }
1002
1003 if ( attributeName.isEmpty() && !attrIsX && !attrIsY && !attrIsZ )
1004 return;
1005
1006 QgsPointCloudRequest request;
1007 request.setAttributes( attributes );
1008 request.setFilterRect( context.layerExtent() );
1009 std::unique_ptr<QgsPointCloudBlock> block( pointCloudBlock( pc, n, request, context ) );
1010 if ( !block )
1011 return;
1012
1013 const char *ptr = block->data();
1014 const int count = block->pointCount();
1015 const std::size_t recordSize = block->attributes().pointRecordSize();
1016
1017 const QgsVector3D blockScale = block->scale();
1018 const QgsVector3D blockOffset = block->offset();
1019 const double zValueScale = context.zValueScale();
1020 const double zValueOffset = context.zValueFixedOffset();
1021 const QgsCoordinateTransform coordinateTransform = context.coordinateTransform();
1022 bool alreadyPrintedDebug = false;
1023
1024 QList<QgsPointCloudCategory> categoriesList = symbol->categoriesList();
1025 QVector<int> categoriesValues;
1026 QHash<int, double> categoriesPointSizes;
1027 for ( QgsPointCloudCategory &c : categoriesList )
1028 {
1029 categoriesValues.push_back( c.value() );
1030 categoriesPointSizes.insert( c.value(), c.pointSize() > 0 ? c.pointSize() :
1031 context.symbol() ? context.symbol()->pointSize() : 1.0 );
1032 }
1033
1034 if ( !output )
1035 output = &outNormal;
1036
1037 output->positionsOrigin = originFromNodeBounds( pc, n, context, block.get() );
1038
1039 const QSet<int> filteredOutValues = context.getFilteredOutValues();
1040 for ( int i = 0; i < count; ++i )
1041 {
1042 if ( context.isCanceled() )
1043 break;
1044
1045 const qint32 ix = *( qint32 * )( ptr + i * recordSize + xOffset );
1046 const qint32 iy = *( qint32 * )( ptr + i * recordSize + yOffset );
1047 const qint32 iz = *( qint32 * )( ptr + i * recordSize + zOffset );
1048
1049 double x = blockOffset.x() + blockScale.x() * ix;
1050 double y = blockOffset.y() + blockScale.y() * iy;
1051 double z = ( blockOffset.z() + blockScale.z() * iz ) * zValueScale + zValueOffset;
1052 try
1053 {
1054 coordinateTransform.transformInPlace( x, y, z );
1055 }
1056 catch ( QgsCsException & )
1057 {
1058 if ( !alreadyPrintedDebug )
1059 {
1060 QgsDebugError( QStringLiteral( "Error transforming point coordinate" ) );
1061 alreadyPrintedDebug = true;
1062 }
1063 }
1064 const QgsVector3D point = QgsVector3D( x, y, z ) - output->positionsOrigin;
1065 float iParam = 0.0f;
1066 if ( attrIsX )
1067 iParam = x;
1068 else if ( attrIsY )
1069 iParam = y;
1070 else if ( attrIsZ )
1071 iParam = z;
1072 else
1073 context.getAttribute( ptr, i * recordSize + attributeOffset, attributeType, iParam );
1074
1075 if ( filteredOutValues.contains( ( int ) iParam ) ||
1076 ! categoriesValues.contains( ( int ) iParam ) )
1077 continue;
1078 output->positions.push_back( point.toVector3D() );
1079
1080 // find iParam actual index in the categories list
1081 float iParam2 = categoriesValues.indexOf( ( int )iParam ) + 1;
1082 output->parameter.push_back( iParam2 );
1083 output->pointSizes.push_back( categoriesPointSizes.value( ( int ) iParam ) );
1084 }
1085}
1086
1087void QgsClassificationPointCloud3DSymbolHandler::finalize( Qt3DCore::QEntity *parent, const QgsPointCloud3DRenderContext &context )
1088{
1089 makeEntity( parent, context, outNormal, false );
1090}
1091
1092Qt3DQGeometry *QgsClassificationPointCloud3DSymbolHandler::makeGeometry( Qt3DCore::QNode *parent, const QgsPointCloud3DSymbolHandler::PointData &data, unsigned int byteStride )
1093{
1094 return new QgsClassificationPointCloud3DGeometry( parent, data, byteStride );
1095}
1096
IndexedPointCloudNode
Represents a indexed point cloud node in octree.
Definition qgspointcloudindex.h:60
IndexedPointCloudNode::d
int d() const
Returns d.
Definition qgspointcloudindex.cpp:65
IndexedPointCloudNode::parentNode
IndexedPointCloudNode parentNode() const
Returns the parent of the node.
Definition qgspointcloudindex.cpp:47
Qgs3DRenderContext::origin
QgsVector3D origin() const
Returns coordinates in map CRS at which 3D scene has origin (0,0,0)
Definition qgs3drendercontext.h:80
QgsBox3D
A 3-dimensional box composed of x, y, z coordinates.
Definition qgsbox3d.h:43
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::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:497
QgsClassificationPointCloud3DSymbol::attribute
QString attribute() const
Returns the attribute used to select the color of the point cloud.
Definition qgspointcloud3dsymbol.cpp:531
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: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:105
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:79
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:153
QgsPointCloud3DRenderContext::feedback
QgsFeedback * feedback() const
Returns the feedback object used to cancel rendering and check if rendering was canceled.
Definition qgspointcloudlayer3drenderer.h:186
QgsPointCloud3DRenderContext::attributes
QgsPointCloudAttributeCollection attributes() const
Returns the attributes associated with the rendered block.
Definition qgspointcloudlayer3drenderer.h:65
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:181
QgsPointCloud3DRenderContext::layerExtent
QgsRectangle layerExtent() const
Returns the 3D scene's extent in layer crs.
Definition qgspointcloudlayer3drenderer.h:192
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:160
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.
QgsPointCloudBlock
Base class for storing raw data from point cloud nodes.
Definition qgspointcloudblock.h:39
QgsPointCloudBlock::scale
QgsVector3D scale() const
Returns the custom scale of the block.
Definition qgspointcloudblock.cpp:57
QgsPointCloudBlock::offset
QgsVector3D offset() const
Returns the custom offset of the block.
Definition qgspointcloudblock.cpp:62
QgsPointCloudCategory
Represents an individual category (class) from a QgsPointCloudClassifiedRenderer.
Definition qgspointcloudclassifiedrenderer.h:33
QgsPointCloudDataBounds
Represents packaged data bounds.
Definition qgspointcloudindex.h:159
QgsPointCloudDataBounds::xMin
qint64 xMin() const
Returns x min.
QgsPointCloudDataBounds::zMin
qint64 zMin() const
Returns z min.
QgsPointCloudDataBounds::yMin
qint64 yMin() const
Returns y min.
QgsPointCloudIndex
Represents a indexed point clouds data in octree.
Definition qgspointcloudindex.h:209
QgsPointCloudIndex::span
int span() const
Returns the number of points in one direction in a single node.
Definition qgspointcloudindex.cpp:275
QgsPointCloudIndex::nodePointCount
virtual qint64 nodePointCount(const IndexedPointCloudNode &n) const
Returns the number of points of a given node n.
Definition qgspointcloudindex.cpp:196
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: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::nodeBounds
QgsPointCloudDataBounds nodeBounds(const IndexedPointCloudNode &node) const
Returns bounds of particular node.
Definition qgspointcloudindex.cpp:226
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: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:389
QgsRectangle::grow
void grow(double delta)
Grows the rectangle in place by the specified amount.
Definition qgsrectangle.h:306
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: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
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