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Seems to be trimming the candidate list early and artificially resetting all candidate costs if they are too high? I believe this code is wrong, or has been made redundant by other changes to the logic of the labeling engine. At this stage we have not completely calculated the costs for label candidates, so sorting and truncating the candidate list here is premature and potentially removes nice candidates.
1. Remove redundant sort operations 2. Rename classes and methods for clarity 3. Don't overwrite polygon candidate costs with new costs based solely on the ring distance cost -- instead just increase the existing cost by the ring distance cost, so that already calculated costs such as obstacle overlap costs aren't lost 4. Remove unused code
shortly after this code executes)
Seems this weird logic is still involved in the obstacle avoidance code
it's an insane approach
Add WMS, WMTS and WCS metadata_url property in the layer metadata tab
Since SAGA 2.3.0, DIST and BUFFERTYPE parameters for Gid Buffer module were renamed to DISTANCE and TYPE, respectively.
Instead of basing the initial dx/dy for the grid-based polygon candidate generation on the size of the label itself, instead use either the engine setting for polygon label density OR try and infer this from the maximum number of candidates to generate for the polygon. This avoids numerous issues with the label-size based approach: - small labels (e.g. 1-2 digit labels) would generate a HUGE number of candidates because the initial dx/dy were very small - large labels would generate very few candidates, giving few options for placement within these polygons (due to initially large dx/dy) - by generating much more candidates then desired for small labels, all the candidates further from the polygon centers would be culled at a later step, meaning that the only candidates available for the labeling problem solving would be clustered around a very small area of the polygon (instead of distributed over the whole polygon)
Instead of just considering the "candidate furthest from the polygon rings" as the best, also consider that candidates closer to the overall polygon centroid are better than those further from the centroid. I.e. if two candidates are similarish distances from a ring, pick the one closer to the centroid instead of the one further from the centroid (even if that further one is a tiny bit more distant from a ring)
…ng mode These aren't so slow anymore to warrant having the extra text
longhuan2018
pushed a commit
that referenced
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Oct 13, 2020
These references are to objects belonging to another thread, which
can cause crashes if the object on the main thread is deleted while
the handler is still active
Refs a asan report:
==677416==ERROR: AddressSanitizer: heap-use-after-free on address 0x6070029bc278 at pc 0x7f95719ccc45 bp 0x7f94bdd7a310 sp 0x7f94bdd7a300
READ of size 4 at 0x6070029bc278 thread T36 (Thread (pooled))
#0 0x7f95719ccc44 in QgsLine3DSymbol::extrusionHeight() const /home/nyall/dev/qgis-asan/src/3d/symbols/qgsline3dsymbol.h:78
#1 0x7f95674a7c01 in QgsBufferedLine3DSymbolHandler::processFeature(QgsFeature&, Qgs3DRenderContext const&) /home/nyall/dev/qgis-asan/src/3d/symbols/qgsline3dsymbol_p.cpp:126
#2 0x7f9567457045 in operator() /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.cpp:97
#3 0x7f95674597fd in runFunctor /usr/include/qt5/QtConcurrent/qtconcurrentstoredfunctioncall.h:70
#4 0x7f956744acf7 in QtConcurrent::RunFunctionTask<void>::run() (/home/nyall/dev/build-QGIS-asan/output/lib/libqgis_3d.so.3.15.0+0x2adcf7)
#5 0x7f956a275d59 (/usr/lib64/libQt5Core.so.5+0xc9d59)
#6 0x7f956a27268f (/usr/lib64/libQt5Core.so.5+0xc668f)
#7 0x7f956a193431 in start_thread (/usr/lib64/libpthread.so.0+0x9431)
#8 0x7f955ad59912 in __GI___clone (/usr/lib64/libc.so.6+0x101912)
0x6070029bc278 is located 56 bytes inside of 72-byte region [0x6070029bc240,0x6070029bc288)
freed by thread T0 here:
#0 0x7f9572b86b87 in operator delete(void*) (/usr/lib64/libasan.so.6+0xb2b87)
#1 0x7f956749c00b in QgsLine3DSymbol::~QgsLine3DSymbol() /home/nyall/dev/qgis-asan/src/3d/symbols/qgsline3dsymbol.cpp:30
#2 0x7f95719664ca in std::default_delete<QgsAbstract3DSymbol>::operator()(QgsAbstract3DSymbol*) const /usr/include/c++/10/bits/unique_ptr.h:85
#3 0x7f95674428ce in std::unique_ptr<QgsAbstract3DSymbol, std::default_delete<QgsAbstract3DSymbol> >::~unique_ptr() /usr/include/c++/10/bits/unique_ptr.h:361
#4 0x7f9567459eb6 in QgsVectorLayerChunkLoaderFactory::~QgsVectorLayerChunkLoaderFactory() /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.h:53
#5 0x7f9567459edd in QgsVectorLayerChunkLoaderFactory::~QgsVectorLayerChunkLoaderFactory() /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.h:53
#6 0x7f956746e4db in QgsChunkedEntity::~QgsChunkedEntity() /home/nyall/dev/qgis-asan/src/3d/chunks/qgschunkedentity_p.cpp:122
#7 0x7f9567459358 in QgsVectorLayerChunkedEntity::~QgsVectorLayerChunkedEntity() /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.cpp:164
#8 0x7f9567459373 in QgsVectorLayerChunkedEntity::~QgsVectorLayerChunkedEntity() /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.cpp:168
#9 0x7f956a42e960 in QObject::event(QEvent*) (/usr/lib64/libQt5Core.so.5+0x282960)
#10 0x7f956ada2062 in QApplicationPrivate::notify_helper(QObject*, QEvent*) (/usr/lib64/libQt5Widgets.so.5+0x172062)
previously allocated by thread T0 here:
#0 0x7f9572b86067 in operator new(unsigned long) (/usr/lib64/libasan.so.6+0xb2067)
#1 0x7f95674a3018 in qgis::_Unique_if<QgsLine3DSymbol>::_Single_object qgis::make_unique<QgsLine3DSymbol>() /home/nyall/dev/qgis-asan/src/core/qgis.h:425
#2 0x7f956749c0b9 in QgsLine3DSymbol::clone() const /home/nyall/dev/qgis-asan/src/3d/symbols/qgsline3dsymbol.cpp:34
#3 0x7f9567458b5f in QgsVectorLayerChunkLoaderFactory::QgsVectorLayerChunkLoaderFactory(Qgs3DMapSettings const&, QgsVectorLayer*, QgsAbstract3DSymbol*, int) /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.cpp:141
#4 0x7f9567458d88 in QgsVectorLayerChunkedEntity::QgsVectorLayerChunkedEntity(QgsVectorLayer*, double, double, QgsVectorLayer3DTilingSettings const&, QgsAbstract3DSymbol*, Qgs3DMapSettings const&) /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayerchunkloader_p.cpp:159
#5 0x7f956745558f in QgsVectorLayer3DRenderer::createEntity(Qgs3DMapSettings const&) const /home/nyall/dev/qgis-asan/src/3d/qgsvectorlayer3drenderer.cpp:76
#6 0x7f95673a71c0 in Qgs3DMapScene::addLayerEntity(QgsMapLayer*) /home/nyall/dev/qgis-asan/src/3d/qgs3dmapscene.cpp:693
#7 0x7f95673a5523 in Qgs3DMapScene::onLayerRenderer3DChanged() /home/nyall/dev/qgis-asan/src/3d/qgs3dmapscene.cpp:598
#8 0x7f95673c6c33 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (Qgs3DMapScene::*)()>::call(void (Qgs3DMapScene::*)(), Qgs3DMapScene*, void**) (/home/nyall/dev/build-QGIS-asan/output/lib/libqgis_3d.so.3.15.0+0x229c33)
#9 0x7f95673c5468 in void QtPrivate::FunctionPointer<void (Qgs3DMapScene::*)()>::call<QtPrivate::List<>, void>(void (Qgs3DMapScene::*)(), Qgs3DMapScene*, void**) /usr/include/qt5/QtCore/qobjectdefs_impl.h:185
#10 0x7f95673c1748 in QtPrivate::QSlotObject<void (Qgs3DMapScene::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) /usr/include/qt5/QtCore/qobjectdefs_impl.h:418
#11 0x7f956a435f75 (/usr/lib64/libQt5Core.so.5+0x289f75)
#12 0x7f956252106c in QgsMapLayer::renderer3DChanged() src/core/qgis_core_autogen/EWIEGA46WW/moc_qgsmaplayer.cpp:702
#13 0x7f9563917a12 in QgsMapLayer::setRenderer3D(QgsAbstract3DRenderer*) /home/nyall/dev/qgis-asan/src/core/qgsmaplayer.cpp:1813
#14 0x7f95719aaf52 in QgsApp3DSymbolWidgetWithPreview::updatePreview(QgsAbstract3DSymbol*) /home/nyall/dev/qgis-asan/src/app/3d/qgsapp3dsymbolwidget.cpp:243
#15 0x7f95719a97af in operator() /home/nyall/dev/qgis-asan/src/app/3d/qgsapp3dsymbolwidget.cpp:175
#16 0x7f95719ac2dd in call /usr/include/qt5/QtCore/qobjectdefs_impl.h:146
#17 0x7f95719ac24f in call<QtPrivate::List<>, void> /usr/include/qt5/QtCore/qobjectdefs_impl.h:256
#18 0x7f95719ac21e in impl /usr/include/qt5/QtCore/qobjectdefs_impl.h:443
#19 0x7f956a435f75 (/usr/lib64/libQt5Core.so.5+0x289f75)
#20 0x7f95708d15ec in QgsApp3DSymbolWidget::widgetChanged() src/app/qgis_app_autogen/6LADBHSVD5/moc_qgsapp3dsymbolwidget.cpp:144
#21 0x7f95719ae1dd in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QgsApp3DSymbolWidget::*)()>::call(void (QgsApp3DSymbolWidget::*)(), QgsApp3DSymbolWidget*, void**) /usr/include/qt5/QtCore/qobjectdefs_impl.h:152
#22 0x7f95719add9c in void QtPrivate::FunctionPointer<void (QgsApp3DSymbolWidget::*)()>::call<QtPrivate::List<>, void>(void (QgsApp3DSymbolWidget::*)(), QgsApp3DSymbolWidget*, void**) /usr/include/qt5/QtCore/qobjectdefs_impl.h:185
#23 0x7f95719adbfa in QtPrivate::QSlotObject<void (QgsApp3DSymbolWidget::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) /usr/include/qt5/QtCore/qobjectdefs_impl.h:418
#24 0x7f956a435f75 (/usr/lib64/libQt5Core.so.5+0x289f75)
#25 0x7f956c91c63e in Qgs3DSymbolWidget::changed() src/gui/qgis_gui_autogen/EWIEGA46WW/moc_qgs3dsymbolwidget.cpp:131
#26 0x7f95719ce2ad in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (Qgs3DSymbolWidget::*)()>::call(void (Qgs3DSymbolWidget::*)(), Qgs3DSymbolWidget*, void**) /usr/include/qt5/QtCore/qobjectdefs_impl.h:152
#27 0x7f95719ce014 in void QtPrivate::FunctionPointer<void (Qgs3DSymbolWidget::*)()>::call<QtPrivate::List<>, void>(void (Qgs3DSymbolWidget::*)(), Qgs3DSymbolWidget*, void**) /usr/include/qt5/QtCore/qobjectdefs_impl.h:185
#28 0x7f95719cdbfc in QtPrivate::QSlotObject<void (Qgs3DSymbolWidget::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) /usr/include/qt5/QtCore/qobjectdefs_impl.h:418
#29 0x7f956a435f75 (/usr/lib64/libQt5Core.so.5+0x289f75)
(cherry picked from commit 9f97b84)
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