/
qgsmdalprovider.cpp
1061 lines (899 loc) · 32.6 KB
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qgsmdalprovider.cpp
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/***************************************************************************
qgsmdalprovider.cpp
-------------------
begin : April 2018
copyright : (C) 2018 by Peter Petrik
email : zilolv at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <string>
#include "qgsmdalprovider.h"
#include "qgstriangularmesh.h"
#include "qgslogger.h"
#include "qgsapplication.h"
#include "qgsmdaldataitems.h"
#include "qgsmeshdataprovidertemporalcapabilities.h"
const QString QgsMdalProvider::MDAL_PROVIDER_KEY = QStringLiteral( "mdal" );
const QString QgsMdalProvider::MDAL_PROVIDER_DESCRIPTION = QStringLiteral( "MDAL provider" );
bool QgsMdalProvider::isValid() const
{
return mMeshH != nullptr;
}
QString QgsMdalProvider::name() const
{
return MDAL_PROVIDER_KEY;
}
QString QgsMdalProvider::description() const
{
return MDAL_PROVIDER_DESCRIPTION;
}
QgsCoordinateReferenceSystem QgsMdalProvider::crs() const
{
return mCrs;
}
QStringList QgsMdalProvider::subLayers() const
{
return mSubLayersUris;
}
QgsMdalProvider::QgsMdalProvider( const QString &uri, const ProviderOptions &options, QgsDataProvider::ReadFlags flags )
: QgsMeshDataProvider( uri, options, flags )
{
temporalCapabilities()->setTemporalUnit( QgsUnitTypes::TemporalHours );
QByteArray curi = dataSourceUri().toUtf8();
if ( uri.contains( "\":" ) ) //contains a mesh name, so can be directly loaded;
loadData();
else
{
QStringList meshNames = QString( MDAL_MeshNames( curi ) ).split( QStringLiteral( ";;" ) );
if ( meshNames.count() == 1 ) //only one uri is present, can be directly loaded
loadData();
else
mSubLayersUris = meshNames; //several meshes are present, the layer is invalid and has sublayers
}
}
QgsMdalProvider::~QgsMdalProvider()
{
if ( mMeshH )
MDAL_CloseMesh( mMeshH );
}
int QgsMdalProvider::vertexCount() const
{
if ( mMeshH )
return MDAL_M_vertexCount( mMeshH );
else
return 0;
}
int QgsMdalProvider::edgeCount() const
{
if ( mMeshH )
return MDAL_M_edgeCount( mMeshH );
else
return 0;
}
int QgsMdalProvider::faceCount() const
{
if ( mMeshH )
return MDAL_M_faceCount( mMeshH );
else
return 0;
}
void QgsMdalProvider::populateMesh( QgsMesh *mesh ) const
{
if ( mesh )
{
mesh->faces = faces();
mesh->vertices = vertices();
mesh->edges = edges();
}
}
QVector<QgsMeshVertex> QgsMdalProvider::vertices( ) const
{
const int bufferSize = std::min( vertexCount(), 1000 );
QVector<QgsMeshVertex> ret( vertexCount() );
QVector<double> buffer( bufferSize * 3 );
MDAL_MeshVertexIteratorH it = MDAL_M_vertexIterator( mMeshH );
int vertexIndex = 0;
while ( vertexIndex < vertexCount() )
{
int verticesRead = MDAL_VI_next( it, bufferSize, buffer.data() );
if ( verticesRead == 0 )
break;
for ( int i = 0; i < verticesRead; i++ )
{
QgsMeshVertex vertex(
buffer[3 * i],
buffer[3 * i + 1],
buffer[3 * i + 2]
);
ret[vertexIndex + i] = vertex;
}
vertexIndex += verticesRead;
}
MDAL_VI_close( it );
return ret;
}
QVector<QgsMeshEdge> QgsMdalProvider::edges( ) const
{
const int edgesCount = edgeCount();
const int bufferSize = std::min( edgesCount, 1000 );
QVector<QgsMeshEdge> ret( edgesCount );
QVector<int> startBuffer( bufferSize );
QVector<int> endBuffer( bufferSize );
MDAL_MeshEdgeIteratorH it = MDAL_M_edgeIterator( mMeshH );
int edgeIndex = 0;
while ( edgeIndex < edgesCount )
{
int edgesRead = MDAL_EI_next( it, bufferSize, startBuffer.data(), endBuffer.data() );
if ( edgesRead == 0 )
break;
for ( int i = 0; i < edgesRead; i++ )
{
QgsMeshEdge edge(
startBuffer[i],
endBuffer[i]
);
ret[edgeIndex + i] = edge;
}
edgeIndex += edgesRead;
}
MDAL_EI_close( it );
return ret;
}
QVector<QgsMeshFace> QgsMdalProvider::faces( ) const
{
const int faceOffsetsBufferLen = std::min( faceCount(), 1000 );
const int vertexIndicesBufferLen = faceOffsetsBufferLen * 4; // most usually we have quads
int facesCount = faceCount();
QVector<QgsMeshFace> ret( facesCount );
QVector<int> faceOffsetsBuffer( faceOffsetsBufferLen );
QVector<int> vertexIndicesBuffer( vertexIndicesBufferLen );
MDAL_MeshFaceIteratorH it = MDAL_M_faceIterator( mMeshH );
int faceIndex = 0;
while ( faceIndex < facesCount )
{
int facesRead = MDAL_FI_next( it,
faceOffsetsBufferLen,
faceOffsetsBuffer.data(),
vertexIndicesBufferLen,
vertexIndicesBuffer.data() );
if ( facesRead == 0 )
break;
for ( int i = 0; i < facesRead; i++ )
{
QgsMeshFace face;
int startIndex = 0;
if ( i > 0 )
startIndex = faceOffsetsBuffer[ i - 1 ];
int endIndex = faceOffsetsBuffer[ i ];
for ( int j = startIndex; j < endIndex; ++j )
{
int vertexIndex = vertexIndicesBuffer[j];
face.push_back( vertexIndex );
}
ret[faceIndex + i] = face;
}
faceIndex += facesRead;
}
MDAL_FI_close( it );
return ret;
}
QgsRectangle QgsMdalProvider::extent() const
{
double xMin, yMin, xMax, yMax;
MDAL_M_extent( mMeshH, &xMin, &xMax, &yMin, &yMax );
QgsRectangle ret( xMin, yMin, xMax, yMax );
return ret;
}
bool QgsMdalProvider::persistDatasetGroup(
const QString &outputFilePath,
const QString &outputDriver,
const QgsMeshDatasetGroupMetadata &meta,
const QVector<QgsMeshDataBlock> &datasetValues,
const QVector<QgsMeshDataBlock> &datasetActive,
const QVector<double> ×
)
{
if ( !mMeshH )
return true;
// Check that the input vectors have consistent size
if ( times.size() != datasetValues.size() )
return true;
if ( !datasetActive.isEmpty() && ( times.size() != datasetActive.size() ) )
return true;
// Check that input data are for all values
int valuesCount = meta.dataType() == QgsMeshDatasetGroupMetadata::DataOnVertices ? vertexCount() : faceCount();
for ( int i = 0; i < datasetValues.size(); ++i )
{
if ( datasetValues.at( i ).count() != valuesCount )
return true;
if ( !datasetActive.isEmpty() && ( datasetActive.at( i ).count() != faceCount() ) )
return true;
}
if ( outputFilePath.isEmpty() )
return true;
MDAL_DriverH driver = MDAL_driverFromName( outputDriver.toStdString().c_str() );
if ( !driver )
return true;
MDAL_DataLocation location = MDAL_DataLocation::DataInvalidLocation;
switch ( meta.dataType() )
{
case QgsMeshDatasetGroupMetadata::DataOnFaces:
location = MDAL_DataLocation::DataOnFaces;
break;
case QgsMeshDatasetGroupMetadata::DataOnVertices:
location = MDAL_DataLocation::DataOnVertices;
break;
case QgsMeshDatasetGroupMetadata::DataOnEdges:
location = MDAL_DataLocation::DataOnEdges;
break;
case QgsMeshDatasetGroupMetadata::DataOnVolumes:
location = MDAL_DataLocation::DataOnVolumes;
break;
}
MDAL_DatasetGroupH g = MDAL_M_addDatasetGroup(
mMeshH,
meta.name().toStdString().c_str(),
location,
meta.isScalar(),
driver,
outputFilePath.toStdString().c_str()
);
if ( !g )
return true;
const auto extraOptions = meta.extraOptions();
for ( auto it = extraOptions.cbegin(); it != extraOptions.cend(); ++it )
{
MDAL_G_setMetadata( g, it.key().toStdString().c_str(), it.value().toStdString().c_str() );
}
if ( meta.referenceTime().isValid() )
{
MDAL_G_setReferenceTime( g, meta.referenceTime().toString( Qt::ISODateWithMs ).toStdString().c_str() );
}
for ( int i = 0; i < datasetValues.size(); ++i )
{
const QVector<double> values = datasetValues.at( i ).values();
QVector<int> active;
if ( !datasetActive.isEmpty() )
active = datasetActive.at( i ).active();
MDAL_G_addDataset( g,
times.at( i ),
values.constData(),
active.isEmpty() ? nullptr : active.constData()
);
}
MDAL_G_closeEditMode( g );
if ( MDAL_LastStatus() == 0 )
{
QgsMeshDatasetGroupMetadata meta = datasetGroupMetadata( datasetGroupCount() - 1 );
QString newUri = meta.uri();
if ( !mExtraDatasetUris.contains( newUri ) )
mExtraDatasetUris << newUri;
emit datasetGroupsAdded( 1 );
emit dataChanged();
return false;
}
else
return true;
}
bool QgsMdalProvider::persistDatasetGroup( const QString &outputFilePath, const QString &outputDriver, QgsMeshDatasetSourceInterface *source, int datasetGroupIndex )
{
if ( !mMeshH )
return true;
QgsMeshDatasetGroupMetadata meta = source->datasetGroupMetadata( datasetGroupIndex );
int faceValueCount = faceCount();
int valuesCount = meta.dataType() == QgsMeshDatasetGroupMetadata::DataOnVertices ? vertexCount() : faceValueCount;
int datasetCount = source->datasetCount( datasetGroupIndex );
if ( outputFilePath.isEmpty() )
return true;
MDAL_DriverH driver = MDAL_driverFromName( outputDriver.toStdString().c_str() );
if ( !driver )
return true;
MDAL_DataLocation location = MDAL_DataLocation::DataInvalidLocation;
switch ( meta.dataType() )
{
case QgsMeshDatasetGroupMetadata::DataOnFaces:
location = MDAL_DataLocation::DataOnFaces;
break;
case QgsMeshDatasetGroupMetadata::DataOnVertices:
location = MDAL_DataLocation::DataOnVertices;
break;
case QgsMeshDatasetGroupMetadata::DataOnEdges:
location = MDAL_DataLocation::DataOnEdges;
break;
case QgsMeshDatasetGroupMetadata::DataOnVolumes:
location = MDAL_DataLocation::DataOnVolumes;
break;
}
MDAL_DatasetGroupH g = MDAL_M_addDatasetGroup(
mMeshH,
meta.name().toStdString().c_str(),
location,
meta.isScalar(),
driver,
outputFilePath.toStdString().c_str()
);
if ( !g )
return true;
const auto extraOptions = meta.extraOptions();
for ( auto it = extraOptions.cbegin(); it != extraOptions.cend(); ++it )
{
MDAL_G_setMetadata( g, it.key().toStdString().c_str(), it.value().toStdString().c_str() );
}
if ( meta.referenceTime().isValid() )
{
MDAL_G_setReferenceTime( g, meta.referenceTime().toString( Qt::ISODateWithMs ).toStdString().c_str() );
}
bool fail = false;
for ( int i = 0; i < datasetCount; ++i )
{
QgsMeshDatasetIndex index( datasetGroupIndex, i );
QgsMeshDataBlock values = source->datasetValues( index, 0, valuesCount );
QgsMeshDataBlock active = source->areFacesActive( index, 0, faceValueCount );
QgsMeshDatasetMetadata dsm = source->datasetMetadata( index );
if ( !values.isValid() || !dsm.isValid() )
{
fail = true;
break;
}
MDAL_G_addDataset( g,
dsm.time(),
values.values().constData(),
active.active().isEmpty() ? nullptr : active.active().constData()
);
}
if ( fail )
return true;
MDAL_G_closeEditMode( g );
if ( MDAL_LastStatus() == 0 )
{
QgsMeshDatasetGroupMetadata meta = datasetGroupMetadata( datasetGroupCount() - 1 );
QString newUri = meta.uri();
if ( !mExtraDatasetUris.contains( newUri ) )
mExtraDatasetUris << newUri;
addGroupToTemporalCapabilities( datasetGroupCount() - 1 );
return false;
}
else
return true;
}
void QgsMdalProvider::loadData()
{
QByteArray curi = dataSourceUri().toUtf8();
mMeshH = MDAL_LoadMesh( curi.constData() );
temporalCapabilities()->clear();
if ( mMeshH )
{
const QString proj = MDAL_M_projection( mMeshH );
if ( !proj.isEmpty() )
mCrs.createFromString( proj );
int dsGroupCount = MDAL_M_datasetGroupCount( mMeshH );
for ( int i = 0; i < dsGroupCount; ++i )
addGroupToTemporalCapabilities( i );
}
}
void QgsMdalProvider::addGroupToTemporalCapabilities( int indexGroup )
{
if ( !mMeshH )
return;
QgsMeshDataProviderTemporalCapabilities *tempCap = temporalCapabilities();
QgsMeshDatasetGroupMetadata dsgMetadata = datasetGroupMetadata( indexGroup );
QDateTime refTime = dsgMetadata.referenceTime();
tempCap->addGroupReferenceDateTime( indexGroup, refTime );
int dsCount = datasetCount( indexGroup );
if ( dsgMetadata.isTemporal() )
{
tempCap->setHasTemporalCapabilities( true );
for ( int dsi = 0; dsi < dsCount; ++dsi )
{
QgsMeshDatasetMetadata dsMeta = datasetMetadata( QgsMeshDatasetIndex( indexGroup, dsi ) );
if ( dsMeta.isValid() )
tempCap->addDatasetTime( indexGroup, dsMeta.time() );
}
}
}
void QgsMdalProvider::reloadProviderData()
{
if ( mMeshH )
MDAL_CloseMesh( mMeshH );
loadData();
int datasetCountBeforeAdding = datasetGroupCount();
if ( mMeshH )
for ( auto uri : mExtraDatasetUris )
{
std::string str = uri.toStdString();
MDAL_M_LoadDatasets( mMeshH, str.c_str() );
int datasetCount = datasetGroupCount();
for ( ; datasetCountBeforeAdding < datasetCount; datasetCountBeforeAdding++ )
addGroupToTemporalCapabilities( datasetCountBeforeAdding );
}
}
void QgsMdalProvider::fileMeshFilters( QString &fileMeshFiltersString, QString &fileMeshDatasetFiltersString )
{
MDAL_DriverH mdalDriver;
// Grind through all the drivers and their respective metadata.
// We'll add a file filter for those drivers that have a file
// extension defined for them; the others, well, even though
// theoreticaly we can open those files because there exists a
// driver for them, the user will have to use the "All Files" to
// open datasets with no explicitly defined file name extension.
fileMeshFiltersString.clear();
fileMeshDatasetFiltersString.clear();
int driverCount = MDAL_driverCount();
QgsDebugMsgLevel( QStringLiteral( "MDAL driver count: %1" ).arg( driverCount ), 2 );
for ( int i = 0; i < driverCount; ++i )
{
mdalDriver = MDAL_driverFromIndex( i );
if ( !mdalDriver )
{
QgsLogger::warning( "unable to get driver " + QString::number( i ) );
continue;
}
QString longName = MDAL_DR_longName( mdalDriver );
QString driverFilters = MDAL_DR_filters( mdalDriver );
driverFilters = driverFilters.replace( QLatin1String( ";;" ), QLatin1String( " " ) );
bool isMeshDriver = MDAL_DR_meshLoadCapability( mdalDriver );
if ( longName.isEmpty() )
{
QgsLogger::warning( "invalid driver long name " + QString::number( i ) );
continue;
}
if ( !driverFilters.isEmpty() )
{
QString driverFilter = longName + " (" + driverFilters + ");;";
if ( isMeshDriver )
fileMeshFiltersString += driverFilter;
else
fileMeshDatasetFiltersString += driverFilter;
}
}
// sort file filters alphabetically
QStringList filters = fileMeshFiltersString.split( QStringLiteral( ";;" ), QString::SkipEmptyParts );
filters.sort();
fileMeshFiltersString = filters.join( QLatin1String( ";;" ) ) + ";;";
filters = fileMeshDatasetFiltersString.split( QStringLiteral( ";;" ), QString::SkipEmptyParts );
filters.sort();
fileMeshDatasetFiltersString = filters.join( QLatin1String( ";;" ) ) + ";;";
// can't forget the default case - first
fileMeshFiltersString.prepend( QObject::tr( "All files" ) + " (*);;" );
fileMeshDatasetFiltersString.prepend( QObject::tr( "All files" ) + " (*);;" );
// cleanup
if ( fileMeshFiltersString.endsWith( QLatin1String( ";;" ) ) ) fileMeshFiltersString.chop( 2 );
if ( fileMeshDatasetFiltersString.endsWith( QLatin1String( ";;" ) ) ) fileMeshDatasetFiltersString.chop( 2 );
QgsDebugMsgLevel( "Mesh filter list built: " + fileMeshFiltersString, 2 );
QgsDebugMsgLevel( "Mesh dataset filter list built: " + fileMeshDatasetFiltersString, 2 );
}
void QgsMdalProvider::fileMeshExtensions( QStringList &fileMeshExtensions,
QStringList &fileMeshDatasetExtensions )
{
MDAL_DriverH mdalDriver;
// Grind through all the drivers and their respective metadata.
// We'll add a file extension for those drivers that have a file
// extension defined for them
fileMeshExtensions.clear();
fileMeshDatasetExtensions.clear();
int driverCount = MDAL_driverCount();
for ( int i = 0; i < driverCount; ++i )
{
mdalDriver = MDAL_driverFromIndex( i );
if ( !mdalDriver )
{
QgsLogger::warning( "unable to get driver " + QString::number( i ) );
continue;
}
const QString driverFilters = MDAL_DR_filters( mdalDriver );
QStringList extensions = driverFilters.split( QStringLiteral( ";;" ), QString::SkipEmptyParts );
bool isMeshDriver = MDAL_DR_meshLoadCapability( mdalDriver );
if ( !extensions.isEmpty() )
{
for ( auto ext : extensions )
{
ext.remove( QStringLiteral( "*." ) );
if ( isMeshDriver )
fileMeshExtensions += ext;
else
fileMeshDatasetExtensions += ext;
}
}
}
// sort file extensions alphabetically
fileMeshExtensions.sort();
fileMeshDatasetExtensions.sort();
// remove duplicates
fileMeshExtensions.erase( std::unique( fileMeshExtensions.begin(), fileMeshExtensions.end() ), fileMeshExtensions.end() );
fileMeshDatasetExtensions.erase( std::unique( fileMeshDatasetExtensions.begin(), fileMeshDatasetExtensions.end() ), fileMeshDatasetExtensions.end() );
QgsDebugMsgLevel( "Mesh extensions list built: " + fileMeshExtensions.join( QLatin1String( ";;" ) ), 2 );
QgsDebugMsgLevel( "Mesh dataset extensions list built: " + fileMeshDatasetExtensions.join( QLatin1String( ";;" ) ), 2 );
}
/*----------------------------------------------------------------------------------------------*/
bool QgsMdalProvider::addDataset( const QString &uri )
{
int datasetCount = datasetGroupCount();
std::string str = uri.toStdString();
MDAL_M_LoadDatasets( mMeshH, str.c_str() );
if ( datasetCount == datasetGroupCount() )
{
return false;
}
else
{
if ( !mExtraDatasetUris.contains( uri ) )
mExtraDatasetUris << uri;
int datasetCountAfterAdding = datasetGroupCount();
int datasetCountAdded = datasetCountAfterAdding - datasetCount;
for ( ; datasetCount < datasetCountAfterAdding; datasetCount++ )
addGroupToTemporalCapabilities( datasetCount );
emit datasetGroupsAdded( datasetCountAdded );
emit dataChanged();
return true; // Ok
}
}
QStringList QgsMdalProvider::extraDatasets() const
{
return mExtraDatasetUris;
}
int QgsMdalProvider::datasetGroupCount() const
{
return MDAL_M_datasetGroupCount( mMeshH );
}
int QgsMdalProvider::datasetCount( int groupIndex ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, groupIndex );
if ( !group )
return 0;
return MDAL_G_datasetCount( group );
}
QgsMeshDatasetGroupMetadata QgsMdalProvider::datasetGroupMetadata( int groupIndex ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, groupIndex );
if ( !group )
return QgsMeshDatasetGroupMetadata();
bool isScalar = MDAL_G_hasScalarData( group );
MDAL_DataLocation location = MDAL_G_dataLocation( group );
QgsMeshDatasetGroupMetadata::DataType type = QgsMeshDatasetGroupMetadata::DataOnFaces;
switch ( location )
{
case MDAL_DataLocation::DataOnFaces:
type = QgsMeshDatasetGroupMetadata::DataOnFaces;
break;
case MDAL_DataLocation::DataOnVertices:
type = QgsMeshDatasetGroupMetadata::DataOnVertices;
break;
case MDAL_DataLocation::DataOnEdges:
type = QgsMeshDatasetGroupMetadata::DataOnEdges;
break;
case MDAL_DataLocation::DataOnVolumes:
type = QgsMeshDatasetGroupMetadata::DataOnVolumes;
break;
case MDAL_DataLocation::DataInvalidLocation:
return QgsMeshDatasetGroupMetadata();
}
QString name = MDAL_G_name( group );
QString uri = MDAL_G_uri( group );
double min, max;
MDAL_G_minimumMaximum( group, &min, &max );
int maximumVerticalLevels = MDAL_G_maximumVerticalLevelCount( group );
QMap<QString, QString> metadata;
int n = MDAL_G_metadataCount( group );
for ( int i = 0; i < n; ++i )
{
QString key = MDAL_G_metadataKey( group, i );
QString value = MDAL_G_metadataValue( group, i );
metadata[key] = value;
}
QString referenceTimeString( MDAL_G_referenceTime( group ) );
if ( !referenceTimeString.isEmpty() )
referenceTimeString.append( 'Z' );//For now provider doesn't support time zone and return always in local time, force UTC
QDateTime referenceTime = QDateTime::fromString( referenceTimeString, Qt::ISODate );
bool isTemporal = MDAL_G_isTemporal( group );
QgsMeshDatasetGroupMetadata meta(
name,
uri,
isScalar,
type,
min,
max,
maximumVerticalLevels,
referenceTime,
isTemporal,
metadata
);
return meta;
}
QgsMeshDatasetMetadata QgsMdalProvider::datasetMetadata( QgsMeshDatasetIndex index ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, index.group() );
if ( !group )
return QgsMeshDatasetMetadata();
MDAL_DatasetH dataset = MDAL_G_dataset( group, index.dataset() );
if ( !dataset )
return QgsMeshDatasetMetadata();
bool isValid = MDAL_D_isValid( dataset );
double time = MDAL_D_time( dataset );
double min, max;
MDAL_D_minimumMaximum( dataset, &min, &max );
const int maxLevels = MDAL_D_maximumVerticalLevelCount( dataset );
QgsMeshDatasetMetadata meta(
time,
isValid,
min,
max,
maxLevels
);
return meta;
}
QgsMeshDatasetValue QgsMdalProvider::datasetValue( QgsMeshDatasetIndex index, int valueIndex ) const
{
QgsMeshDataBlock vals = datasetValues( index, valueIndex, 1 );
return vals.value( 0 );
}
QgsMeshDataBlock QgsMdalProvider::datasetValues( QgsMeshDatasetIndex index, int valueIndex, int count ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, index.group() );
if ( !group )
return QgsMeshDataBlock();
MDAL_DatasetH dataset = MDAL_G_dataset( group, index.dataset() );
if ( !dataset )
return QgsMeshDataBlock();
bool isScalar = MDAL_G_hasScalarData( group );
QgsMeshDataBlock ret( isScalar ? QgsMeshDataBlock::ScalarDouble : QgsMeshDataBlock::Vector2DDouble, count );
QVector<double> buffer( isScalar ? count : 2 * count );
int valRead = MDAL_D_data( dataset,
valueIndex,
count,
isScalar ? MDAL_DataType::SCALAR_DOUBLE : MDAL_DataType::VECTOR_2D_DOUBLE,
buffer.data() );
if ( valRead != count )
return QgsMeshDataBlock();
ret.setValues( buffer );
return ret;
}
QgsMesh3dDataBlock QgsMdalProvider::dataset3dValues( QgsMeshDatasetIndex index, int faceIndex, int count ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, index.group() );
if ( !group )
return QgsMesh3dDataBlock();
MDAL_DatasetH dataset = MDAL_G_dataset( group, index.dataset() );
if ( !dataset )
return QgsMesh3dDataBlock();
if ( count < 1 )
return QgsMesh3dDataBlock();
bool isScalar = MDAL_G_hasScalarData( group );
QgsMesh3dDataBlock ret( count, !isScalar );
{
QVector<int> faceToVolumeIndexBuffer( count );
int valRead = MDAL_D_data( dataset,
faceIndex,
count,
MDAL_DataType::FACE_INDEX_TO_VOLUME_INDEX_INTEGER,
faceToVolumeIndexBuffer.data() );
if ( valRead != count )
return QgsMesh3dDataBlock();
ret.setFaceToVolumeIndex( faceToVolumeIndexBuffer );
}
{
QVector<int> verticalLevelCountBuffer( count );
int valRead = MDAL_D_data( dataset,
faceIndex,
count,
MDAL_DataType::VERTICAL_LEVEL_COUNT_INTEGER,
verticalLevelCountBuffer.data() );
if ( valRead != count )
return QgsMesh3dDataBlock();
ret.setVerticalLevelsCount( verticalLevelCountBuffer );
}
const int firstVolumeIndex = ret.firstVolumeIndex();
const int lastVolumeIndex = ret.lastVolumeIndex();
const int nVolumes = lastVolumeIndex - firstVolumeIndex;
if ( firstVolumeIndex < 0 || lastVolumeIndex < 0 || nVolumes < 1 )
return QgsMesh3dDataBlock();
const int nVerticalLevelFaces = nVolumes + count; // all volumes top face + bottom face
const int startIndexVerticalFaces = firstVolumeIndex + faceIndex;
{
QVector<double> verticalLevels( nVerticalLevelFaces );
int valRead = MDAL_D_data( dataset,
startIndexVerticalFaces,
nVerticalLevelFaces,
MDAL_DataType::VERTICAL_LEVEL_DOUBLE,
verticalLevels.data() );
if ( valRead != nVerticalLevelFaces )
return QgsMesh3dDataBlock();
ret.setVerticalLevels( verticalLevels );
}
{
QVector<double> values( isScalar ? nVolumes : 2 * nVolumes );
int valRead = MDAL_D_data( dataset,
firstVolumeIndex,
nVolumes,
isScalar ? MDAL_DataType::SCALAR_VOLUMES_DOUBLE : MDAL_DataType::VECTOR_2D_VOLUMES_DOUBLE,
values.data() );
if ( valRead != nVolumes )
return QgsMesh3dDataBlock();
ret.setValues( values );
}
ret.setValid( true );
return ret;
}
bool QgsMdalProvider::isFaceActive( QgsMeshDatasetIndex index, int faceIndex ) const
{
QgsMeshDataBlock vals = areFacesActive( index, faceIndex, 1 );
return vals.active( 0 );
}
QgsMeshDataBlock QgsMdalProvider::areFacesActive( QgsMeshDatasetIndex index, int faceIndex, int count ) const
{
MDAL_DatasetGroupH group = MDAL_M_datasetGroup( mMeshH, index.group() );
if ( !group )
return QgsMeshDataBlock();
MDAL_DatasetH dataset = MDAL_G_dataset( group, index.dataset() );
if ( !dataset )
return QgsMeshDataBlock();
QgsMeshDataBlock ret( QgsMeshDataBlock::ActiveFlagInteger, count );
if ( MDAL_D_hasActiveFlagCapability( dataset ) )
{
QVector<int> buf( count );
int valRead = MDAL_D_data( dataset, faceIndex, count, MDAL_DataType::ACTIVE_INTEGER, buf.data() );
if ( valRead != count )
return QgsMeshDataBlock();
ret.setActive( buf );
}
else
{
ret.setValid( true );
}
return ret;
}
/*----------------------------------------------------------------------------------------------*/
QgsMdalProvider *QgsMdalProviderMetadata::createProvider( const QString &uri, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags )
{
return new QgsMdalProvider( uri, options, flags );
}
QList<QgsDataItemProvider *> QgsMdalProviderMetadata::dataItemProviders() const
{
QList<QgsDataItemProvider *> providers;
providers << new QgsMdalDataItemProvider;
return providers;
}
bool QgsMdalProviderMetadata::createMeshData( const QgsMesh &mesh, const QString uri, const QString &driverName, const QgsCoordinateReferenceSystem &crs ) const
{
MDAL_DriverH driver = MDAL_driverFromName( driverName.toStdString().c_str() );
if ( !driver )
return false;
MDAL_MeshH mdalMesh = MDAL_CreateMesh( driver );
if ( !mdalMesh )
return false;
int bufferSize = 2000;
int vertexIndex = 0;
int faceIndex = 0;
while ( vertexIndex < mesh.vertexCount() )
{
int vertexCount = std::min( bufferSize, mesh.vertexCount() - vertexIndex );
QVector<double> verticesCoordinates( vertexCount * 3 );
for ( int i = 0; i < vertexCount ; ++i )
{
int globalIndex = vertexIndex + i;
const QgsMeshVertex &vert = mesh.vertex( globalIndex );
verticesCoordinates[i * 3 ] = vert.x();
verticesCoordinates[i * 3 + 1] = vert.y();
verticesCoordinates[i * 3 + 2] = vert.z();
}
vertexIndex += vertexCount;
MDAL_M_addVertices( mdalMesh, vertexCount, verticesCoordinates.data() );
}
while ( faceIndex < mesh.faceCount() )
{
int faceCount = std::min( bufferSize, mesh.faceCount() - faceIndex );
QVector<int> faceSizes( faceCount );
QVector<int> indices;
for ( int i = 0; i < faceCount; ++i )
{
const QgsMeshFace &face = mesh.face( faceIndex + i );
faceSizes[i] = face.count();
for ( int j = 0; j < faceSizes[i]; ++j )
indices.push_back( face.at( j ) );
}
MDAL_M_addFaces( mdalMesh, faceCount, faceSizes.data(), indices.data() );
if ( MDAL_LastStatus() != MDAL_Status::None )
{
MDAL_CloseMesh( mdalMesh );
return false;
}
faceIndex += faceCount;
}
MDAL_M_setProjection( mdalMesh, crs.toWkt( QgsCoordinateReferenceSystem::WKT_PREFERRED ).toStdString().c_str() );
MDAL_SaveMesh( mdalMesh, uri.toStdString().c_str(), driverName.toStdString().c_str() );
if ( MDAL_LastStatus() != MDAL_Status::None )
{
MDAL_CloseMesh( mdalMesh );
return false;
}
MDAL_CloseMesh( mdalMesh );
return true;
}
QVariantMap QgsMdalProviderMetadata::decodeUri( const QString &uri ) const
{
const QString path = uri;
QVariantMap uriComponents;
uriComponents.insert( QStringLiteral( "path" ), path );
return uriComponents;
}
QString QgsMdalProviderMetadata::encodeUri( const QVariantMap &parts ) const
{
const QString path = parts.value( QStringLiteral( "path" ) ).toString();
return path;
}
QgsProviderMetadata::ProviderCapabilities QgsMdalProviderMetadata::providerCapabilities() const
{
return FileBasedUris;
}
QString QgsMdalProviderMetadata::filters( FilterType type )
{
switch ( type )
{
case QgsProviderMetadata::FilterType::FilterMesh:
{
QString fileMeshFiltersString;
QString fileMeshDatasetFiltersString;
QgsMdalProvider::fileMeshFilters( fileMeshFiltersString, fileMeshDatasetFiltersString );
return fileMeshFiltersString;
}
case QgsProviderMetadata::FilterType::FilterMeshDataset: