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Nesting: parallel slices export #5880

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Merged
Grantim merged 1 commit into from
Apr 2, 2026
Merged

Nesting: parallel slices export #5880

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27 changes: 6 additions & 21 deletions source/MRIOExtras/MRNesting3mfExport.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -269,29 +269,14 @@ Expected<void> exportNesting3mf( const std::filesystem::path& path, const Nestin

// 2D
{
auto sb = subprogress( params.cb, 0.15f, 0.4f );
tbb::task_group tg;

Slices2D slicesSave, slicesBuffer;
if ( !params.meshes.empty() )
slicesBuffer = prepareSlices( params.meshes[ObjId( 0 )], worldBoxes[ObjId( 0 )], params.zStep, params.decimateSlices );
for ( ObjId i( 0 ); i < params.meshes.size(); ++i )
keepGoing = ParallelFor( params.meshes, [&] ( ObjId i )
{
tg.wait();
std::swap( slicesSave, slicesBuffer ); // get prepared slices buffer
if ( i + 1 < params.meshes.size() )
{
// prepare next object slices in parallel while saving this object slices
tg.run( [&] ()
{
slicesBuffer = prepareSlices( params.meshes[i + 1], worldBoxes[i + 1], params.zStep, params.decimateSlices );
} );
}
auto slices = prepareSlices( params.meshes[i], worldBoxes[i], params.zStep, params.decimateSlices );
auto slPath = utf8string( dir / "2D" / ( uuids[i] + ".model" ) );
save2dModelFile( slPath, slicesSave );
if ( !reportProgress( sb, float( i + 1 ) / float( params.meshes.size() ) ) )
return unexpectedOperationCanceled();
}
save2dModelFile( slPath, slices );
}, subprogress( params.cb, 0.15f, 0.4f ) );
if ( !keepGoing )
return unexpectedOperationCanceled();
}

std::string tempStr;
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