44 mPointIndex =
nullptr;
51 const std::size_t size =
results.size();
53 for ( std::size_t i = 0; i < size; ++i, ++pointData )
58 geos::unique_ptr geosPoint( GEOSGeom_createPointFromXY_r( geosctxt, pointData->
distanceAlongCurve, pointData->
z ) );
60 GEOSSTRtree_insert_r( geosctxt, mPointIndex, geosPoint.get(), pointData );
67 return QStringLiteral(
"pointcloud" );
73 QMap< double, double > res;
76 res.insert( point.distanceAlongCurve, point.z );
88 res.append(
QgsPoint( point.x, point.y, point.z ) );
96 QVector< QgsGeometry > res;
107 QVector< QgsAbstractProfileResults::Feature > res;
108 res.reserve(
static_cast< int >(
results.size() ) );
133 f.
geometry =
QgsGeometry( std::make_unique< QgsPoint >( point.distanceAlongCurve, point.z ) );
150 { QStringLiteral(
"distance" ), point.distanceAlongCurve },
151 { QStringLiteral(
"elevation" ), point.z }
176 painter->setBrush( Qt::NoBrush );
177 painter->setPen( Qt::NoPen );
195 const QRectF visibleRegion( minDistance,
minZ, maxDistance - minDistance,
maxZ -
minZ );
196 QPainterPath clipPath;
197 clipPath.addPolygon( context.
worldTransform().map( visibleRegion ) );
198 painter->setClipPath( clipPath, Qt::ClipOperation::IntersectClip );
204 QPointF p = context.
worldTransform().map( QPointF( point.distanceAlongCurve, point.z ) );
207 color.setAlphaF( color.alphaF() * ( 1.0 - std::pow( point.distanceFromCurve /
tolerance, 0.5 ) ) );
212 painter->fillRect( QRectF( p.x() - penWidth * 0.5,
213 p.y() - penWidth * 0.5,
214 penWidth, penWidth ), color );
218 painter->setBrush( QBrush( color ) );
219 painter->setPen( Qt::NoPen );
220 painter->drawEllipse( QRectF( p.x() - penWidth * 0.5,
221 p.y() - penWidth * 0.5,
222 penWidth, penWidth ) );
230 QList< const QgsPointCloudLayerProfileResults::PointResult * > *
list;
248 GEOSCoordSequence *coord = GEOSCoordSeq_create_r( geosctxt, 2, 2 );
249 GEOSCoordSeq_setXY_r( geosctxt, coord, 0, minDistance, minElevation );
250 GEOSCoordSeq_setXY_r( geosctxt, coord, 1, maxDistance, maxElevation );
251 geos::unique_ptr searchDiagonal( GEOSGeom_createLineString_r( geosctxt, coord ) );
253 QList<const PointResult *> items;
255 callbackData.
list = &items;
256 GEOSSTRtree_query_r( geosctxt, mPointIndex, searchDiagonal.get(),
_GEOSQueryCallback, &callbackData );
260 double bestMatchDistance = std::numeric_limits< double >::max();
262 for (
const PointResult *candidate : std::as_const( items ) )
264 const double distance = std::sqrt( std::pow( candidate->distanceAlongCurve - point.
distance(), 2 )
266 if ( distance < bestMatchDistance )
268 bestMatchDistance = distance;
269 bestMatch = candidate;
290 std::unique_ptr< QgsCurve > substring( mProfileCurve->curveSubstring( distanceRange.
lower(), distanceRange.
upper() ) );
291 QgsGeos substringGeos( substring.get() );
293 if ( !searchGeometry )
299 searchGeometry->
transform( curveToLayerTransform );
307 const QgsDoubleRange providerElevationRange( ( elevationRange.
lower() - mZOffset ) / mZScale, ( elevationRange.
upper() - mZOffset ) / mZScale );
309 const QgsGeometry pointCloudSearchGeometry( std::move( searchGeometry ) );
310 const QVector<QVariantMap> pointAttributes = mLayer->dataProvider()->identify( mMaxErrorInLayerCoordinates, pointCloudSearchGeometry, providerElevationRange );
311 if ( pointAttributes.empty() )
328 mLayer = pcGenerator->mLayer;
329 mLayerId = pcGenerator->mId;
330 mCurveCrs = pcGenerator->mTargetCrs;
331 mProfileCurve.reset( pcGenerator->mProfileCurve->clone() );
332 mTolerance = pcGenerator->mTolerance;
334 mZOffset = pcGenerator->mZOffset;
335 mZScale = pcGenerator->mZScale;
344 , mLayerAttributes( layer->attributes() )
345 , mRenderer( qgis::down_cast<
QgsPointCloudLayerElevationProperties* >( layer->elevationProperties() )->respectLayerColors() && mLayer->renderer() ? mLayer->renderer()->clone() : nullptr )
355 , mProfileCurve( request.profileCurve() ? request.profileCurve()->clone() : nullptr )
356 , mTolerance( request.tolerance() )
357 , mSourceCrs( layer->crs3D() )
358 , mTargetCrs( request.
crs() )
359 , mTransformContext( request.transformContext() )
360 , mZOffset( layer->elevationProperties()->zOffset() )
361 , mZScale( layer->elevationProperties()->zScale() )
362 , mStepDistance( request.stepDistance() )
364 if ( mLayer->dataProvider()->index() )
366 mScale = mLayer->dataProvider()->index()->scale();
367 mOffset = mLayer->dataProvider()->index()->offset();
385 mGatheredPoints.clear();
386 if ( !mLayer || !mProfileCurve || mFeedback->isCanceled() )
401 std::unique_ptr< QgsCurve > trimmedCurve;
403 if ( startDistanceOffset > 0 || endDistance < mProfileCurve->length() )
405 trimmedCurve.reset( mProfileCurve->curveSubstring( startDistanceOffset, endDistance ) );
406 sourceCurve = trimmedCurve.get();
410 sourceCurve = mProfileCurve.get();
414 QgsGeos originalCurveGeos( sourceCurve );
425 QgsDebugError( QStringLiteral(
"Error transforming profile line to layer CRS" ) );
429 if ( mFeedback->isCanceled() )
432 mSearchGeometryInLayerCrsGeometryEngine = std::make_unique< QgsGeos >( mSearchGeometryInLayerCrs.get() );
433 mSearchGeometryInLayerCrsGeometryEngine->prepareGeometry();
434 mMaxSearchExtentInLayerCrs = mSearchGeometryInLayerCrs->boundingBox();
444 if ( toleranceInPixels / 4 < maximumErrorPixels )
445 maximumErrorPixels = toleranceInPixels / 4;
457 QgsDebugError( QStringLiteral(
"Could not transform node extent to curve CRS" ) );
458 rootNodeExtentInCurveCrs = rootNodeExtentLayerCoords;
461 const double rootErrorInMapCoordinates = rootNodeExtentInCurveCrs.
width() / pc->
span();
464 if ( ( rootErrorInMapCoordinates < 0.0 ) || ( mapUnitsPerPixel < 0.0 ) || ( maximumErrorPixels < 0.0 ) )
469 double rootErrorPixels = rootErrorInMapCoordinates / mapUnitsPerPixel;
470 const QVector<IndexedPointCloudNode> nodes = traverseTree( pc, pc->
root(), maximumErrorPixels, rootErrorPixels, context.
elevationRange() );
476 const double rootErrorInLayerCoordinates = rootNodeExtentLayerCoords.
width() / pc->
span();
477 const double maxErrorInMapCoordinates = maximumErrorPixels * mapUnitsPerPixel;
479 mResults = std::make_unique< QgsPointCloudLayerProfileResults >();
480 mResults->copyPropertiesFromGenerator(
this );
481 mResults->mMaxErrorInLayerCoordinates = maxErrorInMapCoordinates * rootErrorInLayerCoordinates / rootErrorInMapCoordinates;
491 mPreparedRendererData = mRenderer->prepare();
492 if ( mPreparedRendererData )
494 const QSet< QString > rendererAttributes = mPreparedRendererData->usedAttributes();
495 for (
const QString &attribute : std::as_const( rendererAttributes ) )
497 if ( attributes.
indexOf( attribute ) >= 0 )
500 const int layerIndex = mLayerAttributes.
indexOf( attribute );
501 if ( layerIndex < 0 )
503 QgsMessageLog::logMessage( QObject::tr(
"Required attribute %1 not found in layer" ).arg( attribute ), QObject::tr(
"Point Cloud" ) );
507 attributes.
push_back( mLayerAttributes.
at( layerIndex ) );
513 mPreparedRendererData.reset();
532 if ( mFeedback->isCanceled() )
539 const int size = mGatheredPoints.size();
540 mResults->results.resize( size );
542 for (
int i = 0; i < size; ++i, ++pointData, ++destData )
544 if ( mFeedback->isCanceled() )
547 *destData = *pointData;
549 if ( mOpacityByDistanceEffect )
552 mResults->minZ = std::min( destData->
z, mResults->minZ );
553 mResults->maxZ = std::max( destData->
z, mResults->maxZ );
555 mResults->finalize( mFeedback.get() );
562 return mResults.release();
567 return mFeedback.get();
572 QVector<IndexedPointCloudNode> nodes;
574 if ( mFeedback->isCanceled() )
585 if ( !mMaxSearchExtentInLayerCrs.
intersects( nodeMapExtent ) )
589 if ( !mSearchGeometryInLayerCrsGeometryEngine->intersects( nodeMapGeometry.
constGet() ) )
595 double childrenErrorPixels = nodeErrorPixels / 2.0;
596 if ( childrenErrorPixels < maxErrorPixels )
599 const QList<IndexedPointCloudNode> children = pc->
nodeChildren( n );
602 nodes += traverseTree( pc, nn, maxErrorPixels, childrenErrorPixels, zRange );
613 if ( mFeedback->isCanceled() )
616 std::unique_ptr<QgsPointCloudBlock> block( pc->
nodeData( n, request ) );
621 visitBlock( block.get(), zRange );
635 QVector<QgsPointCloudBlockRequest *> blockRequests;
639 for (
int i = 0; i < nodes.size(); ++i )
644 blockRequests.append( blockRequest );
646 [
this, &nodesDrawn, &loop, &blockRequests, &zRange, nStr, blockRequest ]()
648 blockRequests.removeOne( blockRequest );
651 if ( blockRequests.isEmpty() )
654 std::unique_ptr<QgsPointCloudBlock> block = blockRequest->
takeBlock();
656 blockRequest->deleteLater();
658 if ( mFeedback->isCanceled() )
665 QgsDebugError( QStringLiteral(
"Unable to load node %1, error: %2" ).arg( nStr, blockRequest->
errorStr() ) );
669 visitBlock( block.get(), zRange );
681 std::unique_ptr<QgsPointCloudBlock> block = blockRequest->
takeBlock();
683 blockRequest->deleteLater();
691 const char *ptr = block->
data();
699 int xOffset = 0, yOffset = 0, zOffset = 0;
704 bool useRenderer =
false;
705 if ( mPreparedRendererData )
707 useRenderer = mPreparedRendererData->prepareBlock( block );
712 for (
int i = 0; i < count; ++i )
714 if ( mFeedback->isCanceled() )
720 QgsPointCloudAttribute::getPointXYZ( ptr, i, recordSize, xOffset, xType, yOffset, yType, zOffset, zType, block->
scale(), block->
offset(), res.
x, res.
y, res.
z );
722 res.
z = res.
z * mZScale + mZOffset;
728 color = mPreparedRendererData->pointColor( block, i, res.
z );
729 if ( !color.isValid() )
732 res.
color = color.rgba();
736 res.
color = mPointColor.rgba();
739 if ( mSearchGeometryInLayerCrsGeometryEngine->contains( res.
x, res.
y ) )
753 mGatheredPoints.append( res );
Represents a indexed point cloud node in octree.
QString toString() const
Encode node to string.
@ RespectsMaximumErrorMapUnit
Generated profile respects the QgsProfileGenerationContext::maximumErrorMapUnits() property.
@ RespectsDistanceRange
Generated profile respects the QgsProfileGenerationContext::distanceRange() property.
@ Circle
Renders points as circles.
@ Square
Renders points as squares.
QFlags< ProfileGeneratorFlag > ProfileGeneratorFlags
@ Round
Use rounded joins.
@ Flat
Flat cap (in line with start/end of line)
ProfileExportType
Types of export for elevation profiles.
@ Profile2D
Export profiles as 2D profile lines, with elevation stored in exported geometry Y dimension and dista...
@ Features3D
Export profiles as 3D features, with elevation values stored in exported geometry Z values.
@ DistanceVsElevationTable
Export profiles as a table of sampled distance vs elevation values.
@ Reverse
Reverse/inverse transform (from destination to source)
Abstract base class for objects which generate elevation profiles.
Abstract base class for storage of elevation profiles.
Contains information about the context in which a coordinate transform is executed.
Custom exception class for Coordinate Reference System related exceptions.
Abstract base class for curved geometry type.
QgsRange which stores a range of double values.
bool isInfinite() const
Returns true if the range consists of all possible values.
Base class for feedback objects to be used for cancellation of something running in a worker thread.
bool isCanceled() const
Tells whether the operation has been canceled already.
void canceled()
Internal routines can connect to this signal if they use event loop.
A geometry is the spatial representation of a feature.
static QgsGeometry fromRect(const QgsRectangle &rect)
Creates a new geometry from a QgsRectangle.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
static GEOSContextHandle_t get()
Returns a thread local instance of a GEOS context, safe for use in the current thread.
Does vector analysis using the geos library and handles import, export, exception handling*.
QgsAbstractGeometry * buffer(double distance, int segments, QString *errorMsg=nullptr) const override
double distance(const QgsAbstractGeometry *geom, QString *errorMsg=nullptr) const override
Calculates the distance between this and geom.
void prepareGeometry() override
Prepares the geometry, so that subsequent calls to spatial relation methods are much faster.
double lineLocatePoint(const QgsPoint &point, QString *errorMsg=nullptr) const
Returns a distance representing the location along this linestring of the closest point on this lines...
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Collection of point cloud attributes.
void push_back(const QgsPointCloudAttribute &attribute)
Adds extra attribute.
int pointRecordSize() const
Returns total size of record.
const QgsPointCloudAttribute & at(int index) const
Returns the attribute at the specified index.
const QgsPointCloudAttribute * find(const QString &attributeName, int &offset) const
Finds the attribute with the name.
int indexOf(const QString &name) const
Returns the index of the attribute with the specified name.
Attribute for point cloud data pair of name and size in bytes.
DataType
Systems of unit measurement.
static void getPointXYZ(const char *ptr, int i, std::size_t pointRecordSize, int xOffset, QgsPointCloudAttribute::DataType xType, int yOffset, QgsPointCloudAttribute::DataType yType, int zOffset, QgsPointCloudAttribute::DataType zType, const QgsVector3D &indexScale, const QgsVector3D &indexOffset, double &x, double &y, double &z)
Retrieves the x, y, z values for the point at index i.
DataType type() const
Returns the data type.
Base class for handling loading QgsPointCloudBlock asynchronously.
QString errorStr()
Returns the error message string of the request.
void finished()
Emitted when the request processing has finished.
std::unique_ptr< QgsPointCloudBlock > takeBlock()
Returns the requested block.
Base class for storing raw data from point cloud nodes.
QgsVector3D scale() const
Returns the custom scale of the block.
const char * data() const
Returns raw pointer to data.
QgsPointCloudAttributeCollection attributes() const
Returns the attributes that are stored in the data block, along with their size.
int pointCount() const
Returns number of points that are stored in the block.
QgsVector3D offset() const
Returns the custom offset of the block.
Represents a indexed point clouds data in octree.
int span() const
Returns the number of points in one direction in a single node.
virtual qint64 nodePointCount(const IndexedPointCloudNode &n) const
Returns the number of points of a given node n.
QgsRectangle nodeMapExtent(const IndexedPointCloudNode &node) const
Returns the extent of a node in map coordinates.
virtual QgsPointCloudBlockRequest * asyncNodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns a handle responsible for loading a node data block.
virtual QList< IndexedPointCloudNode > nodeChildren(const IndexedPointCloudNode &n) const
Returns all children of node.
@ Remote
Remote means it's loaded through a protocol like HTTP.
@ Local
Local means the source is a local file on the machine.
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...
virtual bool isValid() const =0
Returns whether index is loaded and valid.
IndexedPointCloudNode root()
Returns root node of the index.
QgsDoubleRange nodeZRange(const IndexedPointCloudNode &node) const
Returns the z range of a node.
virtual std::unique_ptr< QgsPointCloudBlock > nodeData(const IndexedPointCloudNode &n, const QgsPointCloudRequest &request)=0
Returns node data block.
Point cloud layer specific subclass of QgsMapLayerElevationProperties.
Implementation of QgsAbstractProfileGenerator for point cloud layers.
Qgis::ProfileGeneratorFlags flags() const override
Returns flags which reflect how the profile generator operates.
QgsPointCloudLayerProfileGenerator(QgsPointCloudLayer *layer, const QgsProfileRequest &request)
Constructor for QgsPointCloudLayerProfileGenerator.
~QgsPointCloudLayerProfileGenerator() override
QString sourceId() const override
Returns a unique identifier representing the source of the profile.
QgsFeedback * feedback() const override
Access to feedback object of the generator (may be nullptr)
QgsAbstractProfileResults * takeResults() override
Takes results from the generator.
bool generateProfile(const QgsProfileGenerationContext &context=QgsProfileGenerationContext()) override
Generate the profile (based on data stored in the class).
Qgis::PointCloudSymbol pointSymbol
QgsProfileSnapResult snapPoint(const QgsProfilePoint &point, const QgsProfileSnapContext &context) override
Snaps a point to the generated elevation profile.
void finalize(QgsFeedback *feedback)
Finalizes results – should be called after last point is added.
QgsPointSequence sampledPoints() const override
Returns a list of sampled points, with their calculated elevation as the point z value.
QgsDoubleRange zRange() const override
Returns the range of the retrieved elevation values.
std::vector< PointResult > results
QMap< double, double > distanceToHeightMap() const override
Returns the map of distance (chainage) to height.
QVector< QgsGeometry > asGeometries() const override
Returns a list of geometries representing the calculated elevation results.
~QgsPointCloudLayerProfileResults() override
void copyPropertiesFromGenerator(const QgsAbstractProfileGenerator *generator) override
Copies properties from specified generator to the results object.
QVector< QgsProfileIdentifyResults > identify(const QgsProfilePoint &point, const QgsProfileIdentifyContext &context) override
Identify results visible at the specified profile point.
QString type() const override
Returns the unique string identifier for the results type.
bool opacityByDistanceEffect
QgsPointCloudLayerProfileResults()
void renderResults(QgsProfileRenderContext &context) override
Renders the results to the specified context.
QVector< QgsAbstractProfileResults::Feature > asFeatures(Qgis::ProfileExportType type, QgsFeedback *feedback=nullptr) const override
Returns a list of features representing the calculated elevation results.
Qgis::RenderUnit pointSizeUnit
Represents a map layer supporting display of point clouds.
Point cloud data request.
void setAttributes(const QgsPointCloudAttributeCollection &attributes)
Set attributes filter in the request.
Point geometry type, with support for z-dimension and m-values.
Encapsulates the context in which an elevation profile is to be generated.
double mapUnitsPerDistancePixel() const
Returns the number of map units per pixel in the distance dimension.
QgsDoubleRange elevationRange() const
Returns the range of elevations to include in the generation.
double convertDistanceToPixels(double size, Qgis::RenderUnit unit) const
Converts a distance size from the specified units to pixels.
QgsDoubleRange distanceRange() const
Returns the range of distances to include in the generation.
Encapsulates the context of identifying profile results.
double maximumPointElevationDelta
Maximum allowed snapping delta for the elevation values when identifying a point.
double maximumPointDistanceDelta
Maximum allowed snapping delta for the distance values when identifying a point.
QgsProject * project
Associated project.
Stores identify results generated by a QgsAbstractProfileResults object.
Encapsulates a point on a distance-elevation profile.
double elevation() const
Returns the elevation of the point.
double distance() const
Returns the distance of the point.
Abstract base class for storage of elevation profiles.
const QTransform & worldTransform() const
Returns the transform from world coordinates to painter coordinates.
QgsDoubleRange elevationRange() const
Returns the range of elevations to include in the render.
QgsDoubleRange distanceRange() const
Returns the range of distances to include in the render.
QgsRenderContext & renderContext()
Returns a reference to the component QgsRenderContext.
Encapsulates properties and constraints relating to fetching elevation profiles from different source...
Encapsulates the context of snapping a profile point.
double maximumPointDistanceDelta
Maximum allowed snapping delta for the distance values when snapping to a point.
double maximumPointElevationDelta
Maximum allowed snapping delta for the elevation values when snapping to a point.
double displayRatioElevationVsDistance
Display ratio of elevation vs distance units.
Encapsulates results of snapping a profile point.
QgsProfilePoint snappedPoint
Snapped point.
QgsCoordinateTransformContext transformContext
bool overlaps(const QgsRange< T > &other) const
Returns true if this range overlaps another range.
bool contains(const QgsRange< T > &other) const
Returns true if this range contains another range.
T lower() const
Returns the lower bound of the range.
T upper() const
Returns the upper bound of the range.
A rectangle specified with double values.
bool intersects(const QgsRectangle &rect) const
Returns true when rectangle intersects with other rectangle.
double width() const
Returns the width of the rectangle.
double convertToPainterUnits(double size, Qgis::RenderUnit unit, const QgsMapUnitScale &scale=QgsMapUnitScale(), Qgis::RenderSubcomponentProperty property=Qgis::RenderSubcomponentProperty::Generic) const
Converts a size from the specified units to painter units (pixels).
QPainter * painter()
Returns the destination QPainter for the render operation.
Scoped object for saving and restoring a QPainter object's state.
QVector< QgsPoint > QgsPointSequence
#define QgsDebugError(str)
void _GEOSQueryCallback(void *item, void *userdata)
const QgsCoordinateReferenceSystem & crs
Encapsulates information about a feature exported from the profile results.
QString layerIdentifier
Identifier for grouping output features.
QVariantMap attributes
Exported attributes.
QgsGeometry geometry
Exported geometry.
double distanceAlongCurve
QList< const QgsPointCloudLayerProfileResults::PointResult * > * list