QGIS API Documentation 3.41.0-Master (fda2aa46e9a)
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qgsmesheditor.cpp
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1/***************************************************************************
2 qgsmesheditor.cpp - QgsMeshEditor
3
4 ---------------------
5 begin : 8.6.2021
6 copyright : (C) 2021 by Vincent Cloarec
7 email : vcloarec at gmail dot com
8 ***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16
17#include "qgis.h"
18#include "qgsmesheditor.h"
19#include "moc_qgsmesheditor.cpp"
20#include "qgsmeshdataprovider.h"
21#include "qgstriangularmesh.h"
22#include "qgsmeshlayer.h"
23#include "qgsgeometryengine.h"
25#include "qgsgeometryutils.h"
26#include "qgspolygon.h"
27
28#include <poly2tri.h>
29
30#include <QSet>
31
32
34 : QObject( meshLayer )
35 , mMesh( meshLayer ? meshLayer->nativeMesh() : nullptr )
36 , mTriangularMesh( meshLayer ? meshLayer->triangularMeshByLodIndex( 0 ) : nullptr )
37 , mUndoStack( meshLayer ? meshLayer->undoStack() : nullptr )
38{
39 if ( meshLayer && meshLayer->dataProvider() )
40 mMaximumVerticesPerFace = meshLayer->dataProvider()->maximumVerticesCountPerFace();
41
42 if ( meshLayer )
43 connect( mUndoStack, &QUndoStack::indexChanged, this, &QgsMeshEditor::meshEdited );
44}
45
46QgsMeshEditor::QgsMeshEditor( QgsMesh *nativeMesh, QgsTriangularMesh *triangularMesh, QObject *parent )
47 : QObject( parent )
48 , mMesh( nativeMesh )
49 , mTriangularMesh( triangularMesh )
50{
51 mUndoStack = new QUndoStack( this );
52 connect( mUndoStack, &QUndoStack::indexChanged, this, &QgsMeshEditor::meshEdited );
53}
54
56{
57 std::unique_ptr<QgsMeshDatasetGroup> zValueDatasetGroup = std::make_unique<QgsMeshVerticesElevationDatasetGroup>( tr( "vertices Z value" ), mMesh );
58
59 // this DOES look very dangerous!
60 // TODO rework to avoid this danger
61
62 // cppcheck-suppress danglingLifetime
63 mZValueDatasetGroup = zValueDatasetGroup.get();
64
65 return zValueDatasetGroup.release();
66}
67
69
71{
73 mTopologicalMesh = QgsTopologicalMesh::createTopologicalMesh( mMesh, mMaximumVerticesPerFace, error );
74
76 {
77 // we check for free vertices that could be included in face here
78 // because we need the spatial index of the triangular mesh
79 const QList<int> freeVertices = mTopologicalMesh.freeVerticesIndexes();
80 for ( int vi : freeVertices )
81 {
82 if ( mTriangularMesh->faceIndexForPoint_v2( mTriangularMesh->vertices().at( vi ) ) != -1 )
83 {
85 break;
86 }
87 }
88 }
89
90 mValidFacesCount = mMesh->faceCount();
91 mValidVerticesCount = mMesh->vertexCount();
92 return error;
93}
94
96{
97 QgsMeshEditingError lastError;
98
99 while ( true )
100 {
101 lastError = initialize();
103 break;
104
105 if ( !fixError( lastError ) )
106 break;
107
108 mTriangularMesh->update( mMesh );
109 };
110
111 return lastError;
112}
113
115{
116 switch ( error.errorType )
117 {
119 return true;
120 break;
125 if ( error.elementIndex != -1 && error.elementIndex < mMesh->faceCount() )
126 {
127 mMesh->faces.removeAt( error.elementIndex );
128 return true;
129 }
130 return false;
131 break;
134 {
135 auto faceIt = mMesh->faces.begin();
136 while ( faceIt != mMesh->faces.end() )
137 {
138 if ( faceIt->contains( error.elementIndex ) )
139 faceIt = mMesh->faces.erase( faceIt );
140 else
141 ++faceIt;
142 }
143
144 if ( error.elementIndex >= 0 && error.elementIndex < mMesh->vertexCount() )
145 {
146 mMesh->vertices[error.elementIndex] = QgsMeshVertex();
147 reindex( false );
148 }
149 return true;
150 }
151 break;
152 }
153
154 return false;
155}
156
158{
159 mTriangularMesh = triangularMesh;
160}
161
162
163bool QgsMeshEditor::isFaceGeometricallyCompatible( const QList<int> &vertexIndexes, const QList<QgsMeshVertex> &vertices ) const
164{
165 Q_ASSERT( vertexIndexes.count() == vertices.count() );
166
167 QVector<QgsPoint> ring;
168 for ( int i = 0; i < vertices.size(); ++i )
169 {
170 const QgsPoint &vertex = vertices[i];
171 ring.append( vertex );
172 }
173 std::unique_ptr< QgsPolygon > polygon = std::make_unique< QgsPolygon >();
174 polygon->setExteriorRing( new QgsLineString( ring ) );
175 const QgsGeometry newFaceGeom( polygon.release() );
176 std::unique_ptr<QgsGeometryEngine> geomEngine( QgsGeometry::createGeometryEngine( newFaceGeom.constGet() ) );
177 geomEngine->prepareGeometry();
178
179 const QgsRectangle boundingBox = newFaceGeom.boundingBox();
180 int newFaceSize = vertexIndexes.count();
181 const QList<int> concernedFaceIndex = mTriangularMesh->nativeFaceIndexForRectangle( boundingBox );
182 if ( !concernedFaceIndex.isEmpty() )
183 {
184 // for each concerned face, we take edges and, if no common vertex with the new face,
185 // check is the edge intersects or is contained in the new face
186 for ( const int faceIndex : concernedFaceIndex )
187 {
188 const QgsMeshFace &existingFace = mMesh->faces.at( faceIndex );
189 int existingFaceSize = existingFace.count();
190 bool shareVertex = false;
191 for ( int i = 0; i < existingFaceSize; ++i )
192 {
193 if ( vertexIndexes.contains( existingFace.at( i ) ) )
194 {
195 shareVertex = true;
196 break;
197 }
198 }
199
200 if ( shareVertex )
201 {
202 for ( int i = 0; i < existingFaceSize; ++i )
203 {
204 int index1 = existingFace.at( i );
205 int index2 = existingFace.at( ( i + 1 ) % existingFaceSize );
206 const QgsMeshVertex &v1 = mTriangularMesh->vertices().at( index1 );
207 const QgsMeshVertex &v2 = mTriangularMesh->vertices().at( index2 );
208 QgsGeometry edgeGeom = QgsGeometry( new QgsLineString( v1, v2 ) );
209
210 if ( ! vertexIndexes.contains( index1 ) && !vertexIndexes.contains( index2 ) )
211 {
212 // test if the edge that not contains a shared vertex intersect the entire new face
213 if ( geomEngine->intersects( edgeGeom.constGet() ) )
214 return false;
215 }
216 else
217 {
218 for ( int vi = 0; vi < vertexIndexes.count(); ++vi )
219 {
220 int vertInNewFace1 = vertexIndexes.at( vi );
221 int vertInNewFace2 = vertexIndexes.at( ( vi + 1 ) % newFaceSize );
222 bool hasToBeTest = false;
223
224 if ( vertInNewFace1 != -1 && vertInNewFace2 != -1 )
225 {
226 hasToBeTest = vertInNewFace1 != index1 &&
227 vertInNewFace2 != index2 &&
228 vertInNewFace1 != index2 &&
229 vertInNewFace2 != index1;
230 }
231 else
232 {
233 if ( vertInNewFace1 == -1 )
234 hasToBeTest &= vertInNewFace2 != index1 && vertInNewFace2 != index2;
235
236
237 if ( vertInNewFace2 == -1 )
238 hasToBeTest &= vertInNewFace1 != index1 && vertInNewFace1 != index2;
239 }
240
241 if ( hasToBeTest )
242 {
243 const QgsMeshVertex &nv1 = vertices.at( vi );
244 const QgsMeshVertex &nv2 = vertices.at( ( vi + 1 ) % newFaceSize );
245 const QgsGeometry newEdgeGeom = QgsGeometry( new QgsLineString( nv1, nv2 ) );
246
247 if ( newEdgeGeom.intersects( edgeGeom ) )
248 return false;
249 }
250 }
251 }
252 }
253 }
254 else
255 {
256 const QgsGeometry existingFaceGeom = QgsMeshUtils::toGeometry( existingFace, mTriangularMesh->vertices() );
257 if ( geomEngine->intersects( existingFaceGeom.constGet() ) )
258 return false;
259 }
260 }
261 }
262
263 // Then search for free vertices included in the new face
264 const QList<int> &freeVertices = freeVerticesIndexes();
265 for ( const int freeVertexIndex : freeVertices )
266 {
267 if ( vertexIndexes.contains( freeVertexIndex ) )
268 continue;
269
270 const QgsMeshVertex &vertex = mTriangularMesh->vertices().at( freeVertexIndex );
271 if ( geomEngine->contains( &vertex ) )
272 return false;
273 }
274
275 return true;
276}
277
279{
280 const QList<int> newFaceVerticesIndexes( face.toList() );
281 QList<QgsMeshVertex> allVertices;
282 allVertices.reserve( face.count() );
283 for ( int i : face )
284 allVertices.append( mTriangularMesh->vertices().at( i ) );
285
286 return isFaceGeometricallyCompatible( newFaceVerticesIndexes, allVertices );
287
288}
289
290
292{
294
295 // Prepare and check the face
296 QVector<QgsMeshFace> facesToAdd = prepareFaces( {face}, error );
297
299 return false;
300
301 // Check if there is topological error with the mesh
303 error = mTopologicalMesh.facesCanBeAdded( topologicalFaces );
304
306 return false;
307
308 // Check geometry compatibility
309 // With the topological check, we know that the new face is not included in an existing one
310 // But maybe, the new face includes or intersects existing faces or free vertices, we need to check
311 // First search for faces intersecting the bounding box of the new face.
312
313 return isFaceGeometricallyCompatible( face );
314}
315
316bool QgsMeshEditor::faceCanBeAddedWithNewVertices( const QList<int> &verticesIndex, const QList<QgsMeshVertex> &newVertices ) const
317{
319 const QList<int> face = prepareFaceWithNewVertices( verticesIndex, newVertices, error );
320
321 if ( face.isEmpty() )
322 return false;
323
325 return false;
326
327 // if we are here, the face is convex and not flat
328
329 // Now we check the topology of the potential new face
330 int size = face.size();
331 QList<QgsMeshVertex> allVertices;
332 allVertices.reserve( verticesIndex.size() );
333 int newVertPos = 0;
334 for ( int i = 0; i < size; ++i )
335 {
336 int index = face.at( i );
337 if ( index == -1 )
338 {
339 if ( newVertPos >= newVertices.count() )
340 return false;
341 allVertices.append( newVertices.at( newVertPos++ ) );
342 continue;
343 }
344
345 allVertices.append( mTriangularMesh->vertices().at( index ) );
346
347 if ( isVertexFree( index ) )
348 continue;
349
350 int prevIndex = face.at( ( i - 1 + size ) % size );
351 int nextIndex = face.at( ( i + 1 ) % size );
352
353 QgsMeshVertexCirculator circulator = mTopologicalMesh.vertexCirculator( index );
354 if ( !circulator.goBoundaryClockwise() ) //vertex not on boundary
355 return false;
356
357 int prevOppVertex = circulator.oppositeVertexClockwise();
358 if ( prevOppVertex == nextIndex ) //manifold face
359 return false;
360
361 if ( !circulator.goBoundaryCounterClockwise() )
362 return false;
363
364 int nextOppVertex = circulator.oppositeVertexCounterClockwise();
365 if ( nextOppVertex == prevIndex ) //manifold face
366 return false;
367
368 if ( nextIndex != nextOppVertex && prevIndex != prevOppVertex ) //unique shared vertex
369 return false;
370 }
371
372 return isFaceGeometricallyCompatible( face, allVertices );
373}
374
375void QgsMeshEditor::applyEdit( QgsMeshEditor::Edit &edit )
376{
377 mTopologicalMesh.applyChanges( edit.topologicalChanges );
378 mTriangularMesh->applyChanges( edit.triangularMeshChanges );
379
380 if ( mZValueDatasetGroup &&
381 ( !edit.topologicalChanges.newVerticesZValues().isEmpty() ||
382 !edit.topologicalChanges.verticesToRemoveIndexes().isEmpty() ||
383 !edit.topologicalChanges.addedVertices().isEmpty() ) )
384 mZValueDatasetGroup->setStatisticObsolete();
385
386 updateElementsCount( edit.topologicalChanges );
387}
388
389void QgsMeshEditor::reverseEdit( QgsMeshEditor::Edit &edit )
390{
391 mTopologicalMesh.reverseChanges( edit.topologicalChanges );
392 mTriangularMesh->reverseChanges( edit.triangularMeshChanges, *mMesh );
393
394 if ( mZValueDatasetGroup &&
395 ( !edit.topologicalChanges.newVerticesZValues().isEmpty() ||
396 !edit.topologicalChanges.verticesToRemoveIndexes().isEmpty() ||
397 !edit.topologicalChanges.addedVertices().isEmpty() ) )
398 mZValueDatasetGroup->setStatisticObsolete();
399
400 updateElementsCount( edit.topologicalChanges, false );
401}
402
403void QgsMeshEditor::applyAddVertex( QgsMeshEditor::Edit &edit, const QgsMeshVertex &vertex, double tolerance )
404{
405 QgsMeshVertex vertexInTriangularCoordinate = mTriangularMesh->nativeToTriangularCoordinates( vertex );
406
407 //check if edges is closest than the tolerance from the vertex
408 int faceEdgeIntersect = -1;
409 int edgePosition = -1;
410
411 QgsTopologicalMesh::Changes topologicChanges;
412
413 if ( edgeIsClose( vertexInTriangularCoordinate, tolerance, faceEdgeIntersect, edgePosition ) )
414 {
415 topologicChanges = mTopologicalMesh.insertVertexInFacesEdge( faceEdgeIntersect, edgePosition, vertex );
416 }
417 else
418 {
419 int includingFaceIndex = mTriangularMesh->nativeFaceIndexForPoint( vertexInTriangularCoordinate );
420
421 if ( includingFaceIndex != -1 )
422 topologicChanges = mTopologicalMesh.addVertexInFace( includingFaceIndex, vertex );
423 else
424 topologicChanges = mTopologicalMesh.addFreeVertex( vertex );
425 }
426
427 applyEditOnTriangularMesh( edit, topologicChanges );
428
429 if ( mZValueDatasetGroup )
430 mZValueDatasetGroup->setStatisticObsolete();
431
432 updateElementsCount( edit.topologicalChanges );
433}
434
435bool QgsMeshEditor::applyRemoveVertexFillHole( QgsMeshEditor::Edit &edit, int vertexIndex )
436{
437 QgsTopologicalMesh::Changes changes = mTopologicalMesh.removeVertexFillHole( vertexIndex );
438
439 if ( !changes.isEmpty() )
440 {
441 applyEditOnTriangularMesh( edit, changes );
442
443 if ( mZValueDatasetGroup )
444 mZValueDatasetGroup->setStatisticObsolete();
445
446 updateElementsCount( edit.topologicalChanges );
447 return true;
448 }
449 else
450 return false;
451}
452
453void QgsMeshEditor::applyRemoveVerticesWithoutFillHole( QgsMeshEditor::Edit &edit, const QList<int> &verticesIndexes )
454{
455 applyEditOnTriangularMesh( edit, mTopologicalMesh.removeVertices( verticesIndexes ) );
456
457 if ( mZValueDatasetGroup )
458 mZValueDatasetGroup->setStatisticObsolete();
459
460 updateElementsCount( edit.topologicalChanges );
461}
462
463void QgsMeshEditor::applyAddFaces( QgsMeshEditor::Edit &edit, const QgsTopologicalMesh::TopologicalFaces &faces )
464{
465 applyEditOnTriangularMesh( edit, mTopologicalMesh.addFaces( faces ) );
466
467 updateElementsCount( edit.topologicalChanges );
468}
469
470void QgsMeshEditor::applyRemoveFaces( QgsMeshEditor::Edit &edit, const QList<int> &faceToRemoveIndex )
471{
472 applyEditOnTriangularMesh( edit, mTopologicalMesh.removeFaces( faceToRemoveIndex ) );
473
474 updateElementsCount( edit.topologicalChanges );
475}
476
477void QgsMeshEditor::applyChangeZValue( QgsMeshEditor::Edit &edit, const QList<int> &verticesIndexes, const QList<double> &newValues )
478{
479 applyEditOnTriangularMesh( edit, mTopologicalMesh.changeZValue( verticesIndexes, newValues ) );
480
481 if ( mZValueDatasetGroup )
482 mZValueDatasetGroup->setStatisticObsolete();
483}
484
485void QgsMeshEditor::applyChangeXYValue( QgsMeshEditor::Edit &edit, const QList<int> &verticesIndexes, const QList<QgsPointXY> &newValues )
486{
487 applyEditOnTriangularMesh( edit, mTopologicalMesh.changeXYValue( verticesIndexes, newValues ) );
488}
489
490void QgsMeshEditor::applyFlipEdge( QgsMeshEditor::Edit &edit, int vertexIndex1, int vertexIndex2 )
491{
492 applyEditOnTriangularMesh( edit, mTopologicalMesh.flipEdge( vertexIndex1, vertexIndex2 ) );
493
494 updateElementsCount( edit.topologicalChanges );
495}
496
497void QgsMeshEditor::applyMerge( QgsMeshEditor::Edit &edit, int vertexIndex1, int vertexIndex2 )
498{
499 applyEditOnTriangularMesh( edit, mTopologicalMesh.merge( vertexIndex1, vertexIndex2 ) );
500
501 updateElementsCount( edit.topologicalChanges );
502}
503
504void QgsMeshEditor::applySplit( QgsMeshEditor::Edit &edit, int faceIndex )
505{
506 applyEditOnTriangularMesh( edit, mTopologicalMesh.splitFace( faceIndex ) );
507
508 updateElementsCount( edit.topologicalChanges );
509}
510
511void QgsMeshEditor::applyAdvancedEdit( QgsMeshEditor::Edit &edit, QgsMeshAdvancedEditing *editing )
512{
513 applyEditOnTriangularMesh( edit, editing->apply( this ) );
514
515 updateElementsCount( edit.topologicalChanges );
516
517 if ( mZValueDatasetGroup )
518 mZValueDatasetGroup->setStatisticObsolete();
519}
520
521void QgsMeshEditor::applyEditOnTriangularMesh( QgsMeshEditor::Edit &edit, const QgsTopologicalMesh::Changes &topologicChanges )
522{
523 QgsTriangularMesh::Changes triangularChanges( topologicChanges, *mMesh );
524 mTriangularMesh->applyChanges( triangularChanges );
525
526 edit.topologicalChanges = topologicChanges;
527 edit.triangularMeshChanges = triangularChanges;
528}
529
530void QgsMeshEditor::updateElementsCount( const QgsTopologicalMesh::Changes &changes, bool apply )
531{
532 if ( apply )
533 {
534 mValidFacesCount += changes.addedFaces().count() - changes.removedFaces().count();
535 mValidVerticesCount += changes.addedVertices().count() - changes.verticesToRemoveIndexes().count();
536 }
537 else
538 {
539 //reverse
540 mValidFacesCount -= changes.addedFaces().count() - changes.removedFaces().count();
541 mValidVerticesCount -= changes.addedVertices().count() - changes.verticesToRemoveIndexes().count();
542 }
543}
544
546{
547 error = mTopologicalMesh.checkConsistency();
548 switch ( error.errorType )
549 {
551 break;
558 return false;
559 }
560
561 if ( mTriangularMesh->vertices().count() != mMesh->vertexCount() )
562 return false;
563
564 if ( mTriangularMesh->faceCentroids().count() != mMesh->faceCount() )
565 return false;
566
567 return true;
568}
569
570bool QgsMeshEditor::edgeIsClose( QgsPointXY point, double tolerance, int &faceIndex, int &edgePosition )
571{
572 QgsRectangle toleranceZone( point.x() - tolerance,
573 point.y() - tolerance,
574 point.x() + tolerance,
575 point.y() + tolerance );
576
577 edgePosition = -1;
578 double minDist = std::numeric_limits<double>::max();
579 const QList<int> &nativeFaces = mTriangularMesh->nativeFaceIndexForRectangle( toleranceZone );
580 double epsilon = std::numeric_limits<double>::epsilon() * tolerance;
581 for ( const int nativeFaceIndex : nativeFaces )
582 {
583 const QgsMeshFace &face = mMesh->face( nativeFaceIndex );
584 const int faceSize = face.size();
585 for ( int i = 0; i < faceSize; ++i )
586 {
587 const QgsMeshVertex &v1 = mTriangularMesh->vertices().at( face.at( i ) );
588 const QgsMeshVertex &v2 = mTriangularMesh->vertices().at( face.at( ( i + 1 ) % faceSize ) );
589
590 double mx, my;
591 double dist = sqrt( QgsGeometryUtilsBase::sqrDistToLine( point.x(),
592 point.y(),
593 v1.x(),
594 v1.y(),
595 v2.x(),
596 v2.y(),
597 mx,
598 my,
599 epsilon ) );
600
601 if ( dist < tolerance && dist < minDist )
602 {
603 faceIndex = nativeFaceIndex;
604 edgePosition = i;
605 minDist = dist;
606 }
607 }
608 }
609
610 if ( edgePosition != -1 )
611 return true;
612
613 return false;
614
615}
616
618{
619 return mValidFacesCount;
620}
621
623{
624 return mValidVerticesCount;
625}
626
628{
629 return mMaximumVerticesPerFace;
630}
631
632QgsMeshEditingError QgsMeshEditor::removeFaces( const QList<int> &facesToRemove )
633{
634 QgsMeshEditingError error = mTopologicalMesh.facesCanBeRemoved( facesToRemove );
636 return error;
637
638 mUndoStack->push( new QgsMeshLayerUndoCommandRemoveFaces( this, facesToRemove ) );
639
640 return error;
641}
642
643bool QgsMeshEditor::edgeCanBeFlipped( int vertexIndex1, int vertexIndex2 ) const
644{
645 return mTopologicalMesh.edgeCanBeFlipped( vertexIndex1, vertexIndex2 );
646}
647
648void QgsMeshEditor::flipEdge( int vertexIndex1, int vertexIndex2 )
649{
650 if ( !edgeCanBeFlipped( vertexIndex1, vertexIndex2 ) )
651 return;
652
653 mUndoStack->push( new QgsMeshLayerUndoCommandFlipEdge( this, vertexIndex1, vertexIndex2 ) );
654}
655
656bool QgsMeshEditor::canBeMerged( int vertexIndex1, int vertexIndex2 ) const
657{
658 return mTopologicalMesh.canBeMerged( vertexIndex1, vertexIndex2 );
659}
660
661void QgsMeshEditor::merge( int vertexIndex1, int vertexIndex2 )
662{
663 if ( !canBeMerged( vertexIndex1, vertexIndex2 ) )
664 return;
665
666 mUndoStack->push( new QgsMeshLayerUndoCommandMerge( this, vertexIndex1, vertexIndex2 ) );
667}
668
669bool QgsMeshEditor::faceCanBeSplit( int faceIndex ) const
670{
671 return mTopologicalMesh.canBeSplit( faceIndex );
672}
673
674int QgsMeshEditor::splitFaces( const QList<int> &faceIndexes )
675{
676 QList<int> faceIndexesSplittable;
677
678 for ( const int faceIndex : faceIndexes )
679 if ( faceCanBeSplit( faceIndex ) )
680 faceIndexesSplittable.append( faceIndex );
681
682 if ( faceIndexesSplittable.isEmpty() )
683 return 0;
684
685 mUndoStack->push( new QgsMeshLayerUndoCommandSplitFaces( this, faceIndexesSplittable ) );
686
687 return faceIndexesSplittable.count();
688}
689
690QVector<QgsMeshFace> QgsMeshEditor::prepareFaces( const QVector<QgsMeshFace> &faces, QgsMeshEditingError &error ) const
691{
692 QVector<QgsMeshFace> treatedFaces = faces;
693
694 // here we could add later some filters, for example, removing faces intersecting with existing one
695
696 for ( int i = 0; i < treatedFaces.count(); ++i )
697 {
698 QgsMeshFace &face = treatedFaces[i];
699 if ( mMaximumVerticesPerFace != 0 && face.count() > mMaximumVerticesPerFace )
700 {
702 break;
703 }
704
705 error = QgsTopologicalMesh::counterClockwiseFaces( face, mMesh );
707 break;
708 }
709
710 return treatedFaces;
711}
712
713QList<int> QgsMeshEditor::prepareFaceWithNewVertices( const QList<int> &face, const QList<QgsMeshVertex> &newVertices, QgsMeshEditingError &error ) const
714{
715 if ( mMaximumVerticesPerFace != 0 && face.count() > mMaximumVerticesPerFace )
716 {
718 return face;
719 }
720
721 int faceSize = face.count();
722 QVector<QgsMeshVertex> vertices( faceSize );
723 int newVertexPos = 0;
724 for ( int i = 0; i < faceSize; ++i )
725 {
726 if ( face.at( i ) == -1 )
727 {
728 if ( newVertexPos >= newVertices.count() )
729 return QList<int>();
730 vertices[i] = newVertices.at( newVertexPos++ );
731 }
732 else if ( face.at( i ) >= 0 )
733 {
734 if ( face.at( i ) >= mTriangularMesh->vertices().count() )
735 {
737 break;
738 }
739 vertices[i] = mTriangularMesh->vertices().at( face.at( i ) );
740 }
741 else
742 {
744 break;
745 }
746 }
747
749 return face;
750
751 bool clockwise = false;
752 error = QgsTopologicalMesh::checkTopologyOfVerticesAsFace( vertices, clockwise );
753
754 if ( clockwise && error.errorType == Qgis::MeshEditingErrorType::NoError )
755 {
756
757 QList<int> newFace = face;
758 for ( int i = 0; i < faceSize / 2; ++i )
759 {
760 int temp = newFace[i];
761 newFace[i] = face.at( faceSize - i - 1 );
762 newFace[faceSize - i - 1] = temp;
763 }
764
765 return newFace;
766 }
767
768 return face;
769}
770
771QgsMeshEditingError QgsMeshEditor::addFaces( const QVector<QVector<int> > &faces )
772{
774 QVector<QgsMeshFace> facesToAdd = prepareFaces( faces, error );
775
777 return error;
778
780
781 error = mTopologicalMesh.facesCanBeAdded( topologicalFaces );
782
784 return error;
785
786 mUndoStack->push( new QgsMeshLayerUndoCommandAddFaces( this, topologicalFaces ) );
787
788 return error;
789}
790
791QgsMeshEditingError QgsMeshEditor::addFace( const QVector<int> &vertexIndexes )
792{
793 return addFaces( {vertexIndexes} );
794}
795
796QgsMeshEditingError QgsMeshEditor::addFaceWithNewVertices( const QList<int> &vertexIndexes, const QList<QgsMeshVertex> &newVertices )
797{
798 mUndoStack->beginMacro( tr( "Add a face with new %n vertices", nullptr, newVertices.count() ) );
799 int newVertexIndex = mMesh->vertexCount();
800 addVertices( newVertices.toVector(), 0 );
801 QgsMeshFace face( vertexIndexes.count() );
802 for ( int i = 0; i < vertexIndexes.count(); ++i )
803 {
804 int index = vertexIndexes.at( i );
805 if ( index == -1 )
806 face[i] = newVertexIndex++;
807 else
808 face[i] = index;
809 }
810
811 QgsMeshEditingError error = addFace( face );
812 mUndoStack->endMacro();
813
814 return error;
815}
816
817int QgsMeshEditor::addVertices( const QVector<QgsMeshVertex> &vertices, double tolerance )
818{
819 QVector<QgsMeshVertex> verticesInLayerCoordinate( vertices.count() );
820 int ignoredVertex = 0;
821 for ( int i = 0; i < vertices.count(); ++i )
822 {
823 const QgsPointXY &pointInTriangularMesh = vertices.at( i );
824 bool isTooClose = false;
825 int triangleIndex = mTriangularMesh->faceIndexForPoint_v2( pointInTriangularMesh );
826 if ( triangleIndex != -1 )
827 {
828 const QgsMeshFace face = mTriangularMesh->triangles().at( triangleIndex );
829 for ( int j = 0; j < 3; ++j )
830 {
831 const QgsPointXY &facePoint = mTriangularMesh->vertices().at( face.at( j ) );
832 double dist = pointInTriangularMesh.distance( facePoint );
833 if ( dist < tolerance )
834 {
835 isTooClose = true;
836 break;
837 }
838 }
839 }
840
841 if ( !isTooClose )
842 verticesInLayerCoordinate[i] = mTriangularMesh->triangularToNativeCoordinates( vertices.at( i ) );
843 else
844 verticesInLayerCoordinate[i] = QgsMeshVertex();
845
846 if ( verticesInLayerCoordinate.at( i ).isEmpty() )
847 ignoredVertex++;
848 }
849
850 if ( ignoredVertex < vertices.count() )
851 {
852 mUndoStack->push( new QgsMeshLayerUndoCommandAddVertices( this, verticesInLayerCoordinate, tolerance ) );
853 }
854
855 int effectivlyAddedVertex = vertices.count() - ignoredVertex;
856
857 return effectivlyAddedVertex;
858}
859
860int QgsMeshEditor::addPointsAsVertices( const QVector<QgsPoint> &point, double tolerance )
861{
862 return addVertices( point, tolerance );
863}
864
865QgsMeshEditingError QgsMeshEditor::removeVerticesWithoutFillHoles( const QList<int> &verticesToRemoveIndexes )
866{
868
869 QList<int> verticesIndexes = verticesToRemoveIndexes;
870
871 QSet<int> concernedNativeFaces;
872 for ( const int vi : std::as_const( verticesIndexes ) )
873 {
874 const QList<int> faces = mTopologicalMesh.facesAroundVertex( vi );
875 concernedNativeFaces.unite( QSet< int >( faces.begin(), faces.end() ) );
876 }
877
878 error = mTopologicalMesh.facesCanBeRemoved( concernedNativeFaces.values() );
879
881 return error;
882
883 mUndoStack->push( new QgsMeshLayerUndoCommandRemoveVerticesWithoutFillHoles( this, verticesIndexes ) );
884 return error;
885}
886
887QList<int> QgsMeshEditor::removeVerticesFillHoles( const QList<int> &verticesToRemoveIndexes )
888{
889 QList<int> remainingVertices;
890 mUndoStack->push( new QgsMeshLayerUndoCommandRemoveVerticesFillHoles( this, verticesToRemoveIndexes, &remainingVertices ) );
891
892 return remainingVertices;
893}
894
895
896void QgsMeshEditor::changeZValues( const QList<int> &verticesIndexes, const QList<double> &newZValues )
897{
898 mUndoStack->push( new QgsMeshLayerUndoCommandChangeZValue( this, verticesIndexes, newZValues ) );
899}
900
901bool QgsMeshEditor::canBeTransformed( const QList<int> &facesToCheck, const std::function<const QgsMeshVertex( int )> &transformFunction ) const
902{
903 for ( const int faceIndex : facesToCheck )
904 {
905 const QgsMeshFace &face = mMesh->face( faceIndex );
906 int faceSize = face.count();
907 QVector<QgsPointXY> pointsInTriangularMeshCoordinate( faceSize );
908 QVector<QgsPointXY> points( faceSize );
909 for ( int i = 0; i < faceSize; ++i )
910 {
911 int ip0 = face[i];
912 int ip1 = face[( i + 1 ) % faceSize];
913 int ip2 = face[( i + 2 ) % faceSize];
914
915 QgsMeshVertex p0 = transformFunction( ip0 );
916 QgsMeshVertex p1 = transformFunction( ip1 );
917 QgsMeshVertex p2 = transformFunction( ip2 );
918
919 double ux = p0.x() - p1.x();
920 double uy = p0.y() - p1.y();
921 double vx = p2.x() - p1.x();
922 double vy = p2.y() - p1.y();
923
924 double crossProduct = ux * vy - uy * vx;
925 if ( crossProduct >= 0 ) //if cross product>0, we have two edges clockwise
926 return false;
927 pointsInTriangularMeshCoordinate[i] = mTriangularMesh->nativeToTriangularCoordinates( p0 );
928 points[i] = p0;
929 }
930
931 const QgsGeometry &deformedFace = QgsGeometry::fromPolygonXY( {points} );
932
933 // now test if the deformed face contain something else
934 QList<int> otherFaceIndexes =
935 mTriangularMesh->nativeFaceIndexForRectangle( QgsGeometry::fromPolygonXY( {pointsInTriangularMeshCoordinate} ).boundingBox() );
936
937 for ( const int otherFaceIndex : otherFaceIndexes )
938 {
939 const QgsMeshFace &otherFace = mMesh->face( otherFaceIndex );
940 int existingFaceSize = otherFace.count();
941 bool shareVertex = false;
942 for ( int i = 0; i < existingFaceSize; ++i )
943 {
944 if ( face.contains( otherFace.at( i ) ) )
945 {
946 shareVertex = true;
947 break;
948 }
949 }
950 if ( shareVertex )
951 {
952 //only test the edge that not contains a shared vertex
953 for ( int i = 0; i < existingFaceSize; ++i )
954 {
955 int index1 = otherFace.at( i );
956 int index2 = otherFace.at( ( i + 1 ) % existingFaceSize );
957 if ( ! face.contains( index1 ) && !face.contains( index2 ) )
958 {
959 const QgsPointXY &v1 = transformFunction( index1 );
960 const QgsPointXY &v2 = transformFunction( index2 );
961 QgsGeometry edgeGeom = QgsGeometry::fromPolylineXY( { v1, v2} );
962 if ( deformedFace.intersects( edgeGeom ) )
963 return false;
964 }
965 }
966 }
967 else
968 {
969 QVector<QgsPointXY> otherPoints( existingFaceSize );
970 for ( int i = 0; i < existingFaceSize; ++i )
971 otherPoints[i] = transformFunction( otherFace.at( i ) );
972 const QgsGeometry existingFaceGeom = QgsGeometry::fromPolygonXY( {otherPoints } );
973 if ( deformedFace.intersects( existingFaceGeom ) )
974 return false;
975 }
976 }
977
978 const QList<int> freeVerticesIndex = freeVerticesIndexes();
979 for ( const int vertexIndex : freeVerticesIndex )
980 {
981 const QgsPointXY &mapPoint = transformFunction( vertexIndex ); //free vertices can be transformed
982 if ( deformedFace.contains( &mapPoint ) )
983 return false;
984 }
985 }
986
987 // free vertices
988 const QList<int> freeVerticesIndex = freeVerticesIndexes();
989 for ( const int vertexIndex : freeVerticesIndex )
990 {
991 const QgsMeshVertex &newFreeVertexPosition = transformFunction( vertexIndex ); // transformed free vertex
992 const QgsMeshVertex pointInTriangularCoord = mTriangularMesh->nativeToTriangularCoordinates( newFreeVertexPosition );
993 const int originalIncludingFace = mTriangularMesh->nativeFaceIndexForPoint( pointInTriangularCoord );
994
995 if ( originalIncludingFace != -1 )
996 {
997 // That means two things: the free vertex is moved AND is included in a face before transform
998 // Before returning false, we need to check if the vertex is still in the face after transform
999 const QgsMeshFace &face = mMesh->face( originalIncludingFace );
1000 int faceSize = face.count();
1001 QVector<QgsPointXY> points( faceSize );
1002 for ( int i = 0; i < faceSize; ++i )
1003 points[i] = transformFunction( face.at( i ) );
1004
1005 const QgsGeometry &deformedFace = QgsGeometry::fromPolygonXY( {points} );
1006 const QgsPointXY ptXY( newFreeVertexPosition );
1007 if ( deformedFace.contains( &ptXY ) )
1008 return false;
1009 }
1010 }
1011
1012 return true;
1013}
1014
1015void QgsMeshEditor::changeXYValues( const QList<int> &verticesIndexes, const QList<QgsPointXY> &newValues )
1016{
1017 // TODO : implement a check if it is possible to change the (x,y) values. For now, this check is made in the APP part
1018 mUndoStack->push( new QgsMeshLayerUndoCommandChangeXYValue( this, verticesIndexes, newValues ) );
1019}
1020
1021void QgsMeshEditor::changeCoordinates( const QList<int> &verticesIndexes, const QList<QgsPoint> &newCoordinates )
1022{
1023 mUndoStack->push( new QgsMeshLayerUndoCommandChangeCoordinates( this, verticesIndexes, newCoordinates ) );
1024}
1025
1027{
1028 mUndoStack->push( new QgsMeshLayerUndoCommandAdvancedEditing( this, editing ) );
1029}
1030
1032{
1033 mTopologicalMesh.reindex();
1034 mUndoStack->clear();
1035}
1036
1038 : mMeshEditor( meshEditor )
1039{
1040}
1041
1043{
1044 if ( mMeshEditor.isNull() )
1045 return;
1046
1047 for ( int i = mEdits.count() - 1; i >= 0; --i )
1048 mMeshEditor->reverseEdit( mEdits[i] );
1049}
1050
1052{
1053 if ( mMeshEditor.isNull() )
1054 return;
1055
1056 for ( QgsMeshEditor::Edit &edit : mEdits )
1057 mMeshEditor->applyEdit( edit );
1058}
1059
1060QgsMeshLayerUndoCommandAddVertices::QgsMeshLayerUndoCommandAddVertices( QgsMeshEditor *meshEditor, const QVector<QgsMeshVertex> &vertices, double tolerance )
1061 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1062 , mVertices( vertices )
1063 , mTolerance( tolerance )
1064{
1065 setText( QObject::tr( "Add %n vertices", nullptr, mVertices.count() ) );
1066}
1067
1069{
1070 if ( !mVertices.isEmpty() )
1071 {
1072 for ( int i = 0; i < mVertices.count(); ++i )
1073 {
1074 const QgsMeshVertex &vertex = mVertices.at( i );
1075 if ( vertex.isEmpty() )
1076 continue;
1077 QgsMeshEditor::Edit edit;
1078 mMeshEditor->applyAddVertex( edit, vertex, mTolerance );
1079 mEdits.append( edit );
1080 }
1081 mVertices.clear(); //not needed anymore, changes are store in mEdits
1082 }
1083 else
1084 {
1085 for ( QgsMeshEditor::Edit &edit : mEdits )
1086 mMeshEditor->applyEdit( edit );
1087 }
1088}
1089
1091 QgsMeshEditor *meshEditor,
1092 const QList<int> &verticesToRemoveIndexes,
1093 QList<int> *remainingVerticesPointer )
1094 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1095 , mVerticesToRemoveIndexes( verticesToRemoveIndexes )
1096 , mRemainingVerticesPointer( remainingVerticesPointer )
1097{
1098 setText( QObject::tr( "Remove %n vertices filling holes", nullptr, verticesToRemoveIndexes.count() ) );
1099}
1100
1102{
1103 int initialVertexCount = mVerticesToRemoveIndexes.count();
1104 if ( !mVerticesToRemoveIndexes.isEmpty() )
1105 {
1106 QgsMeshEditor::Edit edit;
1107 QList<int> vertexToRetry;
1108 while ( !mVerticesToRemoveIndexes.isEmpty() )
1109 {
1110 // try again and again until there is no vertices to remove anymore or nothing is removed.
1111 for ( const int &vertex : std::as_const( mVerticesToRemoveIndexes ) )
1112 {
1113 if ( mMeshEditor->applyRemoveVertexFillHole( edit, vertex ) )
1114 mEdits.append( edit );
1115 else
1116 vertexToRetry.append( vertex );
1117 }
1118
1119 if ( vertexToRetry.count() == mVerticesToRemoveIndexes.count() )
1120 break;
1121 else
1122 mVerticesToRemoveIndexes = vertexToRetry;
1123 }
1124
1125 if ( initialVertexCount == mVerticesToRemoveIndexes.count() )
1126 setObsolete( true );
1127
1128 if ( mRemainingVerticesPointer )
1129 *mRemainingVerticesPointer = mVerticesToRemoveIndexes;
1130
1131 mRemainingVerticesPointer = nullptr;
1132
1133 mVerticesToRemoveIndexes.clear(); //not needed anymore, changes are store in mEdits
1134 }
1135 else
1136 {
1137 for ( QgsMeshEditor::Edit &edit : mEdits )
1138 mMeshEditor->applyEdit( edit );
1139 }
1140}
1141
1142
1144 QgsMeshEditor *meshEditor,
1145 const QList<int> &verticesToRemoveIndexes )
1146 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1147 , mVerticesToRemoveIndexes( verticesToRemoveIndexes )
1148{
1149 setText( QObject::tr( "Remove %n vertices without filling holes", nullptr, verticesToRemoveIndexes.count() ) ) ;
1150}
1151
1153{
1154 if ( !mVerticesToRemoveIndexes.isEmpty() )
1155 {
1156 QgsMeshEditor::Edit edit;
1157
1158 mMeshEditor->applyRemoveVerticesWithoutFillHole( edit, mVerticesToRemoveIndexes );
1159 mEdits.append( edit );
1160
1161 mVerticesToRemoveIndexes.clear(); //not needed anymore, changes are store in mEdits
1162 }
1163 else
1164 {
1165 for ( QgsMeshEditor::Edit &edit : mEdits )
1166 mMeshEditor->applyEdit( edit );
1167 }
1168}
1169
1171 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1172 , mFaces( faces )
1173{
1174 setText( QObject::tr( "Add %n face(s)", nullptr, faces.meshFaces().count() ) );
1175}
1176
1178{
1179 if ( !mFaces.meshFaces().isEmpty() )
1180 {
1181 QgsMeshEditor::Edit edit;
1182 mMeshEditor->applyAddFaces( edit, mFaces );
1183 mEdits.append( edit );
1184
1185 mFaces.clear(); //not needed anymore, now changes are store in edit
1186 }
1187 else
1188 {
1189 for ( QgsMeshEditor::Edit &edit : mEdits )
1190 mMeshEditor->applyEdit( edit );
1191 }
1192}
1193
1195 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1196 , mfacesToRemoveIndexes( facesToRemoveIndexes )
1197{
1198 setText( QObject::tr( "Remove %n face(s)", nullptr, facesToRemoveIndexes.count() ) );
1199}
1200
1202{
1203 if ( !mfacesToRemoveIndexes.isEmpty() )
1204 {
1205 QgsMeshEditor::Edit edit;
1206 mMeshEditor->applyRemoveFaces( edit, mfacesToRemoveIndexes );
1207 mEdits.append( edit );
1208
1209 mfacesToRemoveIndexes.clear(); //not needed anymore, now changes are store in edit
1210 }
1211 else
1212 {
1213 for ( QgsMeshEditor::Edit &edit : mEdits )
1214 mMeshEditor->applyEdit( edit );
1215 }
1216}
1217
1218QgsMeshEditingError::QgsMeshEditingError(): errorType( Qgis::MeshEditingErrorType::NoError ), elementIndex( -1 ) {}
1219
1220QgsMeshEditingError::QgsMeshEditingError( Qgis::MeshEditingErrorType type, int elementIndex ): errorType( type ), elementIndex( elementIndex ) {}
1221
1223{
1224 return mTriangularMesh->nativeExtent();
1225}
1226
1228{
1229 if ( mUndoStack )
1230 return !mUndoStack->isClean();
1231
1232 return false;
1233}
1234
1235bool QgsMeshEditor::reindex( bool renumbering )
1236{
1237 mTopologicalMesh.reindex();
1238 mUndoStack->clear();
1240 mValidFacesCount = mMesh->faceCount();
1241 mValidVerticesCount = mMesh->vertexCount();
1242
1244 return false;
1245
1246 if ( renumbering )
1247 {
1248 if ( !mTopologicalMesh.renumber() )
1249 return false;
1250
1251 QgsMeshEditingError error;
1252 mTopologicalMesh = QgsTopologicalMesh::createTopologicalMesh( mMesh, mMaximumVerticesPerFace, error );
1253 mValidFacesCount = mMesh->faceCount();
1254 mValidVerticesCount = mMesh->vertexCount();
1256 }
1257 else
1258 return true;
1259}
1260
1262{
1263 return mTopologicalMesh.freeVerticesIndexes();
1264}
1265
1266bool QgsMeshEditor::isVertexOnBoundary( int vertexIndex ) const
1267{
1268 return mTopologicalMesh.isVertexOnBoundary( vertexIndex );
1269}
1270
1271bool QgsMeshEditor::isVertexFree( int vertexIndex ) const
1272{
1273 return mTopologicalMesh.isVertexFree( vertexIndex );
1274}
1275
1277{
1278 return mTopologicalMesh.vertexCirculator( vertexIndex );
1279}
1280
1282{
1283 return mTopologicalMesh;
1284}
1285
1287{
1288 return mTriangularMesh;
1289}
1290
1291QgsMeshLayerUndoCommandChangeZValue::QgsMeshLayerUndoCommandChangeZValue( QgsMeshEditor *meshEditor, const QList<int> &verticesIndexes, const QList<double> &newValues )
1292 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1293 , mVerticesIndexes( verticesIndexes )
1294 , mNewValues( newValues )
1295{
1296 setText( QObject::tr( "Change %n vertices Z Value", nullptr, verticesIndexes.count() ) );
1297}
1298
1300{
1301 if ( !mVerticesIndexes.isEmpty() )
1302 {
1303 QgsMeshEditor::Edit edit;
1304 mMeshEditor->applyChangeZValue( edit, mVerticesIndexes, mNewValues );
1305 mEdits.append( edit );
1306 mVerticesIndexes.clear();
1307 mNewValues.clear();
1308 }
1309 else
1310 {
1311 for ( QgsMeshEditor::Edit &edit : mEdits )
1312 mMeshEditor->applyEdit( edit );
1313 }
1314}
1315
1316QgsMeshLayerUndoCommandChangeXYValue::QgsMeshLayerUndoCommandChangeXYValue( QgsMeshEditor *meshEditor, const QList<int> &verticesIndexes, const QList<QgsPointXY> &newValues )
1317 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1318 , mVerticesIndexes( verticesIndexes )
1319 , mNewValues( newValues )
1320{
1321 setText( QObject::tr( "Move %n vertices", nullptr, verticesIndexes.count() ) );
1322}
1323
1325{
1326 if ( !mVerticesIndexes.isEmpty() )
1327 {
1328 QgsMeshEditor::Edit edit;
1329 mMeshEditor->applyChangeXYValue( edit, mVerticesIndexes, mNewValues );
1330 mEdits.append( edit );
1331 mVerticesIndexes.clear();
1332 mNewValues.clear();
1333 }
1334 else
1335 {
1336 for ( QgsMeshEditor::Edit &edit : mEdits )
1337 mMeshEditor->applyEdit( edit );
1338 }
1339}
1340
1341
1342QgsMeshLayerUndoCommandChangeCoordinates::QgsMeshLayerUndoCommandChangeCoordinates( QgsMeshEditor *meshEditor, const QList<int> &verticesIndexes, const QList<QgsPoint> &newCoordinates )
1343 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1344 , mVerticesIndexes( verticesIndexes )
1345 , mNewCoordinates( newCoordinates )
1346{
1347 setText( QObject::tr( "Transform %n vertices coordinates", nullptr, verticesIndexes.count() ) );
1348}
1349
1351{
1352 if ( !mVerticesIndexes.isEmpty() )
1353 {
1354 QgsMeshEditor::Edit editXY;
1355 QList<QgsPointXY> newXY;
1356 newXY.reserve( mNewCoordinates.count() );
1357 QgsMeshEditor::Edit editZ;
1358 QList<double> newZ;
1359 newZ.reserve( mNewCoordinates.count() );
1360
1361 for ( const QgsPoint &pt : std::as_const( mNewCoordinates ) )
1362 {
1363 newXY.append( pt );
1364 newZ.append( pt.z() );
1365 }
1366
1367 mMeshEditor->applyChangeXYValue( editXY, mVerticesIndexes, newXY );
1368 mEdits.append( editXY );
1369 mMeshEditor->applyChangeZValue( editZ, mVerticesIndexes, newZ );
1370 mEdits.append( editZ );
1371 mVerticesIndexes.clear();
1372 mNewCoordinates.clear();
1373 }
1374 else
1375 {
1376 for ( QgsMeshEditor::Edit &edit : mEdits )
1377 mMeshEditor->applyEdit( edit );
1378 }
1379}
1380
1381
1382
1384 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1385 , mVertexIndex1( vertexIndex1 )
1386 , mVertexIndex2( vertexIndex2 )
1387{
1388 setText( QObject::tr( "Flip edge" ) );
1389}
1390
1392{
1393 if ( mVertexIndex1 >= 0 && mVertexIndex2 >= 0 )
1394 {
1395 QgsMeshEditor::Edit edit;
1396 mMeshEditor->applyFlipEdge( edit, mVertexIndex1, mVertexIndex2 );
1397 mEdits.append( edit );
1398 mVertexIndex1 = -1;
1399 mVertexIndex2 = -1;
1400 }
1401 else
1402 {
1403 for ( QgsMeshEditor::Edit &edit : mEdits )
1404 mMeshEditor->applyEdit( edit );
1405 }
1406}
1407
1408QgsMeshLayerUndoCommandMerge::QgsMeshLayerUndoCommandMerge( QgsMeshEditor *meshEditor, int vertexIndex1, int vertexIndex2 )
1409 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1410 , mVertexIndex1( vertexIndex1 )
1411 , mVertexIndex2( vertexIndex2 )
1412{
1413 setText( QObject::tr( "Merge faces" ) );
1414}
1415
1417{
1418 if ( mVertexIndex1 >= 0 && mVertexIndex2 >= 0 )
1419 {
1420 QgsMeshEditor::Edit edit;
1421 mMeshEditor->applyMerge( edit, mVertexIndex1, mVertexIndex2 );
1422 mEdits.append( edit );
1423 mVertexIndex1 = -1;
1424 mVertexIndex2 = -1;
1425 }
1426 else
1427 {
1428 for ( QgsMeshEditor::Edit &edit : mEdits )
1429 mMeshEditor->applyEdit( edit );
1430 }
1431}
1432
1434 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1435 , mFaceIndexes( faceIndexes )
1436{
1437 setText( QObject::tr( "Split %n face(s)", nullptr, faceIndexes.count() ) );
1438}
1439
1441{
1442 if ( !mFaceIndexes.isEmpty() )
1443 {
1444 for ( int faceIndex : std::as_const( mFaceIndexes ) )
1445 {
1446 QgsMeshEditor::Edit edit;
1447 mMeshEditor->applySplit( edit, faceIndex );
1448 mEdits.append( edit );
1449 }
1450 mFaceIndexes.clear();
1451 }
1452 else
1453 {
1454 for ( QgsMeshEditor::Edit &edit : mEdits )
1455 mMeshEditor->applyEdit( edit );
1456 }
1457}
1458
1460 : QgsMeshLayerUndoCommandMeshEdit( meshEditor )
1461 , mAdvancedEditing( advancdEdit )
1462{
1463 setText( advancdEdit->text() );
1464}
1465
1467{
1468 if ( mAdvancedEditing )
1469 {
1470 QgsMeshEditor::Edit edit;
1471 while ( !mAdvancedEditing->isFinished() )
1472 {
1473 mMeshEditor->applyAdvancedEdit( edit, mAdvancedEditing );
1474 mEdits.append( edit );
1475 }
1476
1477 mAdvancedEditing = nullptr;
1478 }
1479 else
1480 {
1481 for ( QgsMeshEditor::Edit &edit : mEdits )
1482 mMeshEditor->applyEdit( edit );
1483 }
1484}
The Qgis class provides global constants for use throughout the application.
Definition qgis.h:54
MeshEditingErrorType
Type of error that can occur during mesh frame editing.
Definition qgis.h:1506
@ TooManyVerticesInFace
A face has more vertices than the maximum number supported per face.
@ InvalidFace
An error occurs due to an invalid face (for example, vertex indexes are unordered)
@ UniqueSharedVertex
A least two faces share only one vertices.
@ ManifoldFace
ManifoldFace.
@ InvalidVertex
An error occurs due to an invalid vertex (for example, vertex index is out of range the available ver...
@ FlatFace
A flat face is present.
static double sqrDistToLine(double ptX, double ptY, double x1, double y1, double x2, double y2, double &minDistX, double &minDistY, double epsilon)
Returns the squared distance between a point and a line.
A geometry is the spatial representation of a feature.
static QgsGeometry fromPolylineXY(const QgsPolylineXY &polyline)
Creates a new LineString geometry from a list of QgsPointXY points.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
bool contains(const QgsPointXY *p) const
Returns true if the geometry contains the point p.
static QgsGeometry fromPolygonXY(const QgsPolygonXY &polygon)
Creates a new geometry from a QgsPolygonXY.
static QgsGeometryEngine * createGeometryEngine(const QgsAbstractGeometry *geometry, double precision=0.0, Qgis::GeosCreationFlags flags=Qgis::GeosCreationFlag::SkipEmptyInteriorRings)
Creates and returns a new geometry engine representing the specified geometry using precision on a gr...
bool intersects(const QgsRectangle &rectangle) const
Returns true if this geometry exactly intersects with a rectangle.
Line string geometry type, with support for z-dimension and m-values.
Abstract class that can be derived to implement advanced editing on mesh.
virtual QgsTopologicalMesh::Changes apply(QgsMeshEditor *meshEditor)=0
Apply a change to mesh Editor.
virtual bool isFinished() const
Returns whether the advanced edit is finished, if not, this edit has to be applied again with QgsMesh...
virtual QString text() const
Returns a short text string describing what this advanced edit does. Default implementation return a ...
virtual int maximumVerticesCountPerFace() const
Returns the maximum number of vertices per face supported by the current mesh, if returns 0,...
Abstract class that represents a dataset group.
void setStatisticObsolete() const
Sets statistic obsolete, that means statistic will be recalculated when requested.
Class that represents an error during mesh editing.
Qgis::MeshEditingErrorType errorType
QgsMeshEditingError()
Constructor of the default error, that is NoError.
Class that makes edit operation on a mesh.
friend class QgsMeshLayerUndoCommandSplitFaces
QgsMeshEditingError initialize()
Initializes the mesh editor and returns first error if the internal native mesh has topological error...
friend class QgsMeshLayerUndoCommandMerge
void changeXYValues(const QList< int > &verticesIndexes, const QList< QgsPointXY > &newValues)
Changes the (X,Y) coordinates values of the vertices with indexes in verticesIndexes with the values ...
int validFacesCount() const
Returns the count of valid faces, that is non void faces in the mesh.
friend class QgsMeshLayerUndoCommandRemoveVerticesWithoutFillHoles
QgsMeshEditingError removeFaces(const QList< int > &facesToRemove)
Removes faces faces to the mesh, returns topological errors if this operation fails (operation is not...
QgsMeshEditingError addFaces(const QVector< QgsMeshFace > &faces)
Adds faces faces to the mesh, returns topological errors if this operation fails (operation is not re...
bool checkConsistency(QgsMeshEditingError &error) const
Return true if the edited mesh is consistent.
QList< int > removeVerticesFillHoles(const QList< int > &verticesToRemoveIndexes)
Removes vertices with indexes in the list verticesToRemoveIndexes in the mesh the surrounding faces A...
void flipEdge(int vertexIndex1, int vertexIndex2)
Flips edge (vertexIndex1, vertexIndex2)
QgsRectangle extent() const
Returns the extent of the edited mesh.
friend class QgsMeshLayerUndoCommandAddVertices
bool faceCanBeSplit(int faceIndex) const
Returns true if face with index faceIndex can be split.
QgsMeshEditingError initializeWithErrorsFix()
Initializes the mesh editor.
int maximumVerticesPerFace() const
Returns the maximum count of vertices per face that the mesh can support.
QgsMeshEditingError addFace(const QVector< int > &vertexIndexes)
Adds a face face to the mesh with vertex indexes vertexIndexes, returns topological errors if this op...
QgsMeshEditor(QgsMeshLayer *meshLayer)
Constructor with a specified layer meshLayer.
void merge(int vertexIndex1, int vertexIndex2)
Merges faces separated by vertices with indexes vertexIndex1 and vertexIndex2.
bool edgeIsClose(QgsPointXY point, double tolerance, int &faceIndex, int &edgePosition)
Returns true if an edge of face is closest than the tolerance from the point in triangular mesh coord...
QgsMeshEditingError removeVerticesWithoutFillHoles(const QList< int > &verticesToRemoveIndexes)
Removes vertices with indexes in the list verticesToRemoveIndexes in the mesh removing the surroundin...
bool isFaceGeometricallyCompatible(const QgsMeshFace &face) const
Returns true if the face does not intersect or contains any other elements (faces or vertices) The to...
QList< int > freeVerticesIndexes() const
Returns all the free vertices indexes.
friend class QgsMeshLayerUndoCommandChangeXYValue
bool isVertexOnBoundary(int vertexIndex) const
Returns whether the vertex with index vertexIndex is on a boundary.
friend class QgsMeshLayerUndoCommandFlipEdge
bool faceCanBeAdded(const QgsMeshFace &face) const
Returns true if a face can be added to the mesh.
void changeCoordinates(const QList< int > &verticesIndexes, const QList< QgsPoint > &newCoordinates)
Changes the (X,Y,Z) coordinates values of the vertices with indexes in vertices indexes with the valu...
void stopEditing()
Stops editing.
friend class QgsMeshLayerUndoCommandAdvancedEditing
bool canBeMerged(int vertexIndex1, int vertexIndex2) const
Returns true if faces separated by vertices with indexes vertexIndex1 and vertexIndex2 can be merged.
friend class QgsMeshLayerUndoCommandAddFaces
QgsMeshEditingError addFaceWithNewVertices(const QList< int > &vertexIndexes, const QList< QgsMeshVertex > &newVertices)
Adds a face formed by some vertices vertexIndexes to the mesh, returns topological errors if this ope...
friend class QgsMeshLayerUndoCommandChangeCoordinates
bool edgeCanBeFlipped(int vertexIndex1, int vertexIndex2) const
Returns true if the edge can be flipped (only available for edge shared by two faces with 3 vertices)
int splitFaces(const QList< int > &faceIndexes)
Splits faces with index faceIndexes.
QgsMeshVertexCirculator vertexCirculator(int vertexIndex) const
Returns a vertex circulator linked to this mesh around the vertex with index vertexIndex.
bool faceCanBeAddedWithNewVertices(const QList< int > &verticesIndex, const QList< QgsMeshVertex > &newVertices) const
Returns true if a face formed by some vertices can be added to the mesh.
void meshEdited()
Emitted when the mesh is edited.
void changeZValues(const QList< int > &verticesIndexes, const QList< double > &newValues)
Changes the Z values of the vertices with indexes in vertices indexes with the values in newValues.
void resetTriangularMesh(QgsTriangularMesh *triangularMesh)
Resets the triangular mesh.
bool isModified() const
Returns whether the mesh has been modified.
void advancedEdit(QgsMeshAdvancedEditing *editing)
Applies an advance editing on the edited mesh, see QgsMeshAdvancedEditing.
bool canBeTransformed(const QList< int > &facesToCheck, const std::function< const QgsMeshVertex(int)> &transformFunction) const
Returns true if faces with index in transformedFaces can be transformed without obtaining topologic o...
int addVertices(const QVector< QgsMeshVertex > &vertices, double tolerance)
Adds vertices in triangular mesh coordinate in the mesh.
int validVerticesCount() const
Returns the count of valid vertices, that is non void vertices in the mesh.
friend class QgsMeshLayerUndoCommandRemoveVerticesFillHoles
bool isVertexFree(int vertexIndex) const
Returns whether the vertex with index vertexIndex is a free vertex.
bool reindex(bool renumbering)
Reindexes the mesh, that is remove unusued index of face and vertices, this operation void the undo/r...
friend class QgsMeshLayerUndoCommandChangeZValue
QgsTriangularMesh * triangularMesh()
Returns a pointer to the triangular mesh.
bool fixError(const QgsMeshEditingError &error)
Tries to fix the topological error in the mesh.
QgsMeshDatasetGroup * createZValueDatasetGroup()
Creates and returns a scalar dataset group with value on vertex that is can be used to access the Z v...
friend class QgsMeshLayerUndoCommandRemoveFaces
QgsTopologicalMesh & topologicalMesh()
Returns a reference to the topological mesh.
int addPointsAsVertices(const QVector< QgsPoint > &point, double tolerance)
Adds points as vertices in triangular mesh coordinate in the mesh.
QgsMeshLayerUndoCommandAddFaces(QgsMeshEditor *meshEditor, QgsTopologicalMesh::TopologicalFaces &faces)
Constructor with the associated meshEditor and faces that will be added.
QgsMeshLayerUndoCommandAddVertices(QgsMeshEditor *meshEditor, const QVector< QgsMeshVertex > &vertices, double tolerance)
Constructor with the associated meshEditor and vertices that will be added.
QgsMeshLayerUndoCommandAdvancedEditing(QgsMeshEditor *meshEditor, QgsMeshAdvancedEditing *advancdEdit)
Constructor with the associated meshEditor.
QgsMeshLayerUndoCommandChangeCoordinates(QgsMeshEditor *meshEditor, const QList< int > &verticesIndexes, const QList< QgsPoint > &newCoordinates)
Constructor with the associated meshEditor and indexes verticesIndexes of the vertices that will have...
QgsMeshLayerUndoCommandChangeXYValue(QgsMeshEditor *meshEditor, const QList< int > &verticesIndexes, const QList< QgsPointXY > &newValues)
Constructor with the associated meshEditor and indexes verticesIndexes of the vertices that will have...
QgsMeshLayerUndoCommandChangeZValue(QgsMeshEditor *meshEditor, const QList< int > &verticesIndexes, const QList< double > &newValues)
Constructor with the associated meshEditor and indexes verticesIndexes of the vertices that will have...
QgsMeshLayerUndoCommandFlipEdge(QgsMeshEditor *meshEditor, int vertexIndex1, int vertexIndex2)
Constructor with the associated meshEditor and the vertex indexes of the edge (vertexIndex1,...
QgsMeshLayerUndoCommandMerge(QgsMeshEditor *meshEditor, int vertexIndex1, int vertexIndex2)
Constructor with the associated meshEditor and the vertex indexes of the edge (vertexIndex1,...
Base class for undo/redo command for mesh editing.
QList< QgsMeshEditor::Edit > mEdits
QgsMeshLayerUndoCommandMeshEdit(QgsMeshEditor *meshEditor)
Constructor for the base class.
QPointer< QgsMeshEditor > mMeshEditor
QgsMeshLayerUndoCommandRemoveFaces(QgsMeshEditor *meshEditor, const QList< int > &facesToRemoveIndexes)
Constructor with the associated meshEditor and indexes facesToRemoveIndexes of the faces that will be...
QgsMeshLayerUndoCommandRemoveVerticesFillHoles(QgsMeshEditor *meshEditor, const QList< int > &verticesToRemoveIndexes, QList< int > *remainingVerticesPointer=nullptr)
Constructor with the associated meshEditor and vertices that will be removed.
QgsMeshLayerUndoCommandRemoveVerticesWithoutFillHoles(QgsMeshEditor *meshEditor, const QList< int > &verticesToRemoveIndexes)
Constructor with the associated meshEditor and vertices that will be removed.
QgsMeshLayerUndoCommandSplitFaces(QgsMeshEditor *meshEditor, const QList< int > &faceIndexes)
Constructor with the associated meshEditor and indexes faceIndexes of the faces to split.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
QgsMeshDataProvider * dataProvider() override
Returns the layer's data provider, it may be nullptr.
Convenient class that turn around a vertex and provide information about faces and vertices.
bool goBoundaryCounterClockwise() const
Sets the circulator on the boundary face turning counter clockwise, return false is there isn't bound...
int oppositeVertexCounterClockwise() const
Returns the opposite vertex of the current face and on the edge on the side turning counter clockwise...
bool goBoundaryClockwise() const
Sets the circulator on the boundary face turning clockwise, return false is there isn't boundary face...
int oppositeVertexClockwise() const
Returns the opposite vertex of the current face and on the edge on the side turning clockwise.
A class to represent a 2D point.
Definition qgspointxy.h:60
double distance(double x, double y) const
Returns the distance between this point and a specified x, y coordinate.
Definition qgspointxy.h:206
double y
Definition qgspointxy.h:64
double x
Definition qgspointxy.h:63
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
double x
Definition qgspoint.h:52
bool isEmpty() const override
Returns true if the geometry is empty.
Definition qgspoint.cpp:738
double y
Definition qgspoint.h:53
A rectangle specified with double values.
Class that contains topological differences between two states of a topological mesh,...
QVector< QgsMeshFace > removedFaces() const
Returns the faces that are removed with this changes.
QVector< QgsMeshVertex > addedVertices() const
Returns the added vertices with this changes.
bool isEmpty() const
Returns whether changes are empty, that there is nothing to change.
QVector< QgsMeshFace > addedFaces() const
Returns the face that are added with this changes.
QList< int > verticesToRemoveIndexes() const
Returns the indexes of vertices to remove.
Class that contains independent faces an topological information about this faces.
void clear()
Clears all data contained in the instance.
QVector< QgsMeshFace > meshFaces() const
Returns faces.
Class that wraps a QgsMesh to ensure the consistency of the mesh during editing and help to access to...
static QgsMeshEditingError checkTopologyOfVerticesAsFace(const QVector< QgsMeshVertex > &vertices, bool &clockwise)
Checks the topology of the vertices as they are contained in a face and returns indication on directi...
Changes changeZValue(const QList< int > &verticesIndexes, const QList< double > &newValues)
Changes the Z values of the vertices with indexes in vertices indexes with the values in newValues.
static QgsTopologicalMesh createTopologicalMesh(QgsMesh *mesh, int maxVerticesPerFace, QgsMeshEditingError &error)
Creates a topologicaly consistent mesh with mesh, this static method modifies mesh to be topological ...
bool isVertexFree(int vertexIndex) const
Returns whether the vertex is a free vertex.
static QgsMeshEditingError counterClockwiseFaces(QgsMeshFace &face, QgsMesh *mesh)
Checks the topology of the face and sets it counter clockwise if necessary.
Changes removeVertexFillHole(int vertexIndex)
Removes the vertex with index vertexIndex.
void applyChanges(const Changes &changes)
Applies the changes.
QgsMeshEditingError checkConsistency() const
Checks the consistency of the topological mesh and return false if there is a consistency issue.
Changes removeVertices(const QList< int > &vertices)
Removes all the vertices with index in the list vertices If vertices in linked with faces,...
Changes changeXYValue(const QList< int > &verticesIndexes, const QList< QgsPointXY > &newValues)
Changes the (X,Y) values of the vertices with indexes in vertices indexes with the values in newValue...
void reindex()
Reindexes faces and vertices, after this operation, the topological mesh can't be edited anymore and ...
QgsMeshEditingError facesCanBeAdded(const TopologicalFaces &topologicalFaces) const
Returns whether the faces can be added to the mesh.
bool renumber()
Renumbers the indexes of vertices and faces using the Reverse CutHill McKee Algorithm.
Changes flipEdge(int vertexIndex1, int vertexIndex2)
Flips edge (vertexIndex1, vertexIndex2) The method returns a instance of the class QgsTopologicalMesh...
QgsMeshEditingError facesCanBeRemoved(const QList< int > &facesIndexes)
Returns whether faces with index in faceIndexes can be removed/ The method an error object with type ...
void reverseChanges(const Changes &changes)
Reverses the changes.
Changes addFaces(const TopologicalFaces &topologicFaces)
Adds faces topologicFaces to the topologic mesh.
Changes merge(int vertexIndex1, int vertexIndex2)
Merges faces separated by vertices with indexes vertexIndex1 and vertexIndex2 The method returns a in...
Changes removeFaces(const QList< int > &facesIndexes)
Removes faces with index in faceIndexes.
QList< int > freeVerticesIndexes() const
Returns a list of vertices are not linked to any faces.
bool edgeCanBeFlipped(int vertexIndex1, int vertexIndex2) const
Returns true if the edge can be flipped (only available for edge shared by two faces with 3 vertices)
Changes addVertexInFace(int faceIndex, const QgsMeshVertex &vertex)
Adds a vertex in the face with index faceIndex.
bool canBeMerged(int vertexIndex1, int vertexIndex2) const
Returns true if faces separated by vertices with indexes vertexIndex1 and vertexIndex2 can be merged.
QList< int > facesAroundVertex(int vertexIndex) const
Returns the indexes of faces that are around the vertex with index vertexIndex.
bool canBeSplit(int faceIndex) const
Returns true if face with index faceIndex can be split.
Changes addFreeVertex(const QgsMeshVertex &vertex)
Adds a free vertex in the face, that is a vertex that is not included or linked with any faces.
Changes insertVertexInFacesEdge(int faceIndex, int position, const QgsMeshVertex &vertex)
Inserts a vertex in the edge of face with index faceIndex at position .
bool isVertexOnBoundary(int vertexIndex) const
Returns whether the vertex is on a boundary.
Changes splitFace(int faceIndex)
Splits face with index faceIndex The method returns a instance of the class QgsTopologicalMesh::Chang...
static TopologicalFaces createNewTopologicalFaces(const QVector< QgsMeshFace > &faces, bool uniqueSharedVertexAllowed, QgsMeshEditingError &error)
Creates new topological faces that are not yet included in the mesh.
QgsMeshVertexCirculator vertexCirculator(int vertexIndex) const
Returns a vertex circulator linked to this mesh around the vertex with index vertexIndex.
The Changes class is used to make changes of the triangular and to keep traces of this changes If a C...
Triangular/Derived Mesh is mesh with vertices in map coordinates.
const QVector< QgsMeshFace > & triangles() const
Returns triangles.
QgsRectangle nativeExtent()
Returns the extent of the mesh in the native mesh coordinates system, returns empty extent if the tra...
int nativeFaceIndexForPoint(const QgsPointXY &point) const
Finds index of native face at given point It uses spatial indexing.
void reverseChanges(const Changes &changes, const QgsMesh &nativeMesh)
Reverses the changes on the triangular mesh (see Changes)
void applyChanges(const Changes &changes)
Applies the changes on the triangular mesh (see Changes)
const QVector< QgsMeshVertex > & vertices() const
Returns vertices in map coordinate system.
QgsMeshVertex triangularToNativeCoordinates(const QgsMeshVertex &vertex) const
Transforms the vertex from triangular mesh coordinates system to native coordinates system.
QgsMeshVertex nativeToTriangularCoordinates(const QgsMeshVertex &vertex) const
Transforms the vertex from native coordinates system to triangular mesh coordinates system.
bool update(QgsMesh *nativeMesh, const QgsCoordinateTransform &transform)
Constructs triangular mesh from layer's native mesh and transform to destination CRS.
const QVector< QgsMeshVertex > & faceCentroids() const
Returns centroids of the native faces in map CRS.
QList< int > nativeFaceIndexForRectangle(const QgsRectangle &rectangle) const
Finds indexes of native faces which bounding boxes intersect given bounding box It uses spatial index...
int faceIndexForPoint_v2(const QgsPointXY &point) const
Finds index of triangle at given point It uses spatial indexing and don't use geos to be faster.
QVector< int > QgsMeshFace
List of vertex indexes.
QgsPoint QgsMeshVertex
xyz coords of vertex
Mesh - vertices, edges and faces.
int vertexCount() const
Returns number of vertices.
QVector< QgsMeshVertex > vertices
QgsMeshFace face(int index) const
Returns a face at the index.
QVector< QgsMeshFace > faces
int faceCount() const
Returns number of faces.