4650a1da96
The `DynamicCellSet` (and the related `DynamicCellSetBase`) are deprecated and replaced with `UnknownCellSet` (and `UncertainCellSet`). Thus, `UnknownCellSet` has some methods inherited from `DynamicCellSet` but replaced with other functionality. These methods are now marked as deprecated and their use is removed.
479 lines
19 KiB
C++
479 lines
19 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/cont/CellLocatorBoundingIntervalHierarchy.h>
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#include <vtkm/Bounds.h>
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#include <vtkm/Types.h>
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#include <vtkm/VecFromPortalPermute.h>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleConstant.h>
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#include <vtkm/cont/ArrayHandleCounting.h>
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#include <vtkm/cont/ArrayHandlePermutation.h>
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#include <vtkm/cont/ArrayHandleReverse.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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#include <vtkm/cont/ErrorBadDevice.h>
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#include <vtkm/exec/CellLocatorBoundingIntervalHierarchy.h>
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#include <vtkm/cont/Invoker.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/worklet/spatialstructure/BoundingIntervalHierarchy.h>
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namespace vtkm
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{
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namespace cont
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{
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using IdArrayHandle = vtkm::cont::ArrayHandle<vtkm::Id>;
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using IdPermutationArrayHandle = vtkm::cont::ArrayHandlePermutation<IdArrayHandle, IdArrayHandle>;
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using CoordsArrayHandle = vtkm::cont::ArrayHandle<vtkm::FloatDefault>;
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using CoordsPermutationArrayHandle =
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vtkm::cont::ArrayHandlePermutation<IdArrayHandle, CoordsArrayHandle>;
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using CountingIdArrayHandle = vtkm::cont::ArrayHandleCounting<vtkm::Id>;
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using RangeArrayHandle = vtkm::cont::ArrayHandle<vtkm::Range>;
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using RangePermutationArrayHandle =
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vtkm::cont::ArrayHandlePermutation<IdArrayHandle, RangeArrayHandle>;
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using SplitArrayHandle = vtkm::cont::ArrayHandle<vtkm::worklet::spatialstructure::TreeNode>;
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using SplitPermutationArrayHandle =
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vtkm::cont::ArrayHandlePermutation<IdArrayHandle, SplitArrayHandle>;
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using SplitPropertiesArrayHandle =
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vtkm::cont::ArrayHandle<vtkm::worklet::spatialstructure::SplitProperties>;
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namespace
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{
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IdArrayHandle CalculateSegmentSizes(const IdArrayHandle& segmentIds, vtkm::Id numCells)
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{
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IdArrayHandle discardKeys;
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IdArrayHandle segmentSizes;
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vtkm::cont::Algorithm::ReduceByKey(segmentIds,
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vtkm::cont::ArrayHandleConstant<vtkm::Id>(1, numCells),
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discardKeys,
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segmentSizes,
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vtkm::Add());
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return segmentSizes;
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}
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IdArrayHandle GenerateSegmentIds(const IdArrayHandle& segmentSizes, vtkm::Id numCells)
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{
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// Compact segment ids, removing non-contiguous values.
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// 1. Perform ScanInclusive to calculate the end positions of each segment
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IdArrayHandle segmentEnds;
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vtkm::cont::Algorithm::ScanInclusive(segmentSizes, segmentEnds);
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// 2. Perform UpperBounds to perform the final compaction.
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IdArrayHandle segmentIds;
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vtkm::cont::Algorithm::UpperBounds(
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segmentEnds, vtkm::cont::ArrayHandleCounting<vtkm::Id>(0, 1, numCells), segmentIds);
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return segmentIds;
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}
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void CalculatePlaneSplitCost(vtkm::IdComponent planeIndex,
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vtkm::IdComponent numPlanes,
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RangePermutationArrayHandle& segmentRanges,
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RangeArrayHandle& ranges,
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CoordsArrayHandle& coords,
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IdArrayHandle& segmentIds,
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SplitPropertiesArrayHandle& splits,
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vtkm::IdComponent index,
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vtkm::IdComponent numTotalPlanes)
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{
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vtkm::cont::Invoker invoker;
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// Make candidate split plane array
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vtkm::cont::ArrayHandle<vtkm::FloatDefault> splitPlanes;
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vtkm::worklet::spatialstructure::SplitPlaneCalculatorWorklet splitPlaneCalcWorklet(planeIndex,
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numPlanes);
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invoker(splitPlaneCalcWorklet, segmentRanges, splitPlanes);
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// Check if a point is to the left of the split plane or right
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vtkm::cont::ArrayHandle<vtkm::Id> isLEQOfSplitPlane, isROfSplitPlane;
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invoker(vtkm::worklet::spatialstructure::LEQWorklet{},
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coords,
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splitPlanes,
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isLEQOfSplitPlane,
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isROfSplitPlane);
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// Count of points to the left
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vtkm::cont::ArrayHandle<vtkm::Id> pointsToLeft;
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IdArrayHandle discardKeys;
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, isLEQOfSplitPlane, discardKeys, pointsToLeft, vtkm::Add());
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// Count of points to the right
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vtkm::cont::ArrayHandle<vtkm::Id> pointsToRight;
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, isROfSplitPlane, discardKeys, pointsToRight, vtkm::Add());
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isLEQOfSplitPlane.ReleaseResourcesExecution();
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isROfSplitPlane.ReleaseResourcesExecution();
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// Calculate Lmax and Rmin
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vtkm::cont::ArrayHandle<vtkm::Range> lMaxRanges;
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{
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vtkm::cont::ArrayHandle<vtkm::Range> leqRanges;
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vtkm::worklet::spatialstructure::FilterRanges<true> worklet;
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invoker(worklet, coords, splitPlanes, ranges, leqRanges);
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, leqRanges, discardKeys, lMaxRanges, vtkm::worklet::spatialstructure::RangeAdd());
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}
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vtkm::cont::ArrayHandle<vtkm::Range> rMinRanges;
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{
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vtkm::cont::ArrayHandle<vtkm::Range> rRanges;
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vtkm::worklet::spatialstructure::FilterRanges<false> worklet;
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invoker(worklet, coords, splitPlanes, ranges, rRanges);
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, rRanges, discardKeys, rMinRanges, vtkm::worklet::spatialstructure::RangeAdd());
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}
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vtkm::cont::ArrayHandle<vtkm::FloatDefault> segmentedSplitPlanes;
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, splitPlanes, discardKeys, segmentedSplitPlanes, vtkm::Minimum());
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// Calculate costs
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vtkm::worklet::spatialstructure::SplitPropertiesCalculator splitPropertiesCalculator(
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index, numTotalPlanes + 1);
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invoker(splitPropertiesCalculator,
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pointsToLeft,
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pointsToRight,
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lMaxRanges,
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rMinRanges,
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segmentedSplitPlanes,
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splits);
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}
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void CalculateSplitCosts(vtkm::IdComponent numPlanes,
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RangePermutationArrayHandle& segmentRanges,
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RangeArrayHandle& ranges,
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CoordsArrayHandle& coords,
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IdArrayHandle& segmentIds,
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SplitPropertiesArrayHandle& splits)
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{
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for (vtkm::IdComponent planeIndex = 0; planeIndex < numPlanes; ++planeIndex)
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{
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CalculatePlaneSplitCost(planeIndex,
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numPlanes,
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segmentRanges,
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ranges,
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coords,
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segmentIds,
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splits,
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planeIndex,
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numPlanes);
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}
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// Calculate median costs
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CalculatePlaneSplitCost(
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0, 1, segmentRanges, ranges, coords, segmentIds, splits, numPlanes, numPlanes);
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}
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IdArrayHandle CalculateSplitScatterIndices(const IdArrayHandle& cellIds,
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const IdArrayHandle& leqFlags,
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const IdArrayHandle& segmentIds)
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{
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vtkm::cont::Invoker invoker;
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// Count total number of true flags preceding in segment
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IdArrayHandle trueFlagCounts;
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vtkm::cont::Algorithm::ScanExclusiveByKey(segmentIds, leqFlags, trueFlagCounts);
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// Make a counting iterator.
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CountingIdArrayHandle counts(0, 1, cellIds.GetNumberOfValues());
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// Total number of elements in previous segment
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vtkm::cont::ArrayHandle<vtkm::Id> countPreviousSegments;
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vtkm::cont::Algorithm::ScanInclusiveByKey(
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segmentIds, counts, countPreviousSegments, vtkm::Minimum());
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// Total number of false flags so far in segment
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vtkm::cont::ArrayHandleTransform<IdArrayHandle, vtkm::worklet::spatialstructure::Invert>
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flagsInverse(leqFlags, vtkm::worklet::spatialstructure::Invert());
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vtkm::cont::ArrayHandle<vtkm::Id> runningFalseFlagCount;
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vtkm::cont::Algorithm::ScanInclusiveByKey(
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segmentIds, flagsInverse, runningFalseFlagCount, vtkm::Add());
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// Total number of false flags in segment
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IdArrayHandle totalFalseFlagSegmentCount =
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vtkm::worklet::spatialstructure::ReverseScanInclusiveByKey(
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segmentIds, runningFalseFlagCount, vtkm::Maximum());
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// if point is to the left,
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// index = total number in previous segments + total number of false flags in this segment + total number of trues in previous segment
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// else
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// index = total number in previous segments + number of falses preceding it in the segment.
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IdArrayHandle scatterIndices;
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invoker(vtkm::worklet::spatialstructure::SplitIndicesCalculator{},
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leqFlags,
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trueFlagCounts,
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countPreviousSegments,
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runningFalseFlagCount,
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totalFalseFlagSegmentCount,
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scatterIndices);
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return scatterIndices;
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}
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} // anonymous namespace
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void CellLocatorBoundingIntervalHierarchy::Build()
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{
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VTKM_LOG_SCOPE(vtkm::cont::LogLevel::Perf, "CellLocatorBoundingIntervalHierarchy::Build");
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vtkm::cont::Invoker invoker;
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vtkm::cont::UnknownCellSet cellSet = this->GetCellSet();
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vtkm::Id numCells = cellSet.GetNumberOfCells();
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vtkm::cont::CoordinateSystem coords = this->GetCoordinates();
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auto points = coords.GetDataAsMultiplexer();
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//std::cout << "No of cells: " << numCells << "\n";
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//std::cout.precision(3);
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//START_TIMER(s11);
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IdArrayHandle cellIds;
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vtkm::cont::Algorithm::Copy(CountingIdArrayHandle(0, 1, numCells), cellIds);
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IdArrayHandle segmentIds;
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vtkm::cont::Algorithm::Copy(vtkm::cont::ArrayHandleConstant<vtkm::Id>(0, numCells), segmentIds);
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//PRINT_TIMER("1.1", s11);
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//START_TIMER(s12);
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CoordsArrayHandle centerXs, centerYs, centerZs;
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RangeArrayHandle xRanges, yRanges, zRanges;
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invoker(vtkm::worklet::spatialstructure::CellRangesExtracter{},
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cellSet,
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points,
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xRanges,
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yRanges,
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zRanges,
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centerXs,
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centerYs,
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centerZs);
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//PRINT_TIMER("1.2", s12);
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bool done = false;
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//vtkm::IdComponent iteration = 0;
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vtkm::Id nodesIndexOffset = 0;
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vtkm::Id numSegments = 1;
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IdArrayHandle discardKeys;
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IdArrayHandle segmentSizes;
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segmentSizes.Allocate(1);
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segmentSizes.WritePortal().Set(0, numCells);
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this->ProcessedCellIds.Allocate(numCells);
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vtkm::Id cellIdsOffset = 0;
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IdArrayHandle parentIndices;
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parentIndices.Allocate(1);
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parentIndices.WritePortal().Set(0, -1);
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while (!done)
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{
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//std::cout << "**** Iteration " << (++iteration) << " ****\n";
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//Output(segmentSizes);
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//START_TIMER(s21);
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// Calculate the X, Y, Z bounding ranges for each segment
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RangeArrayHandle perSegmentXRanges, perSegmentYRanges, perSegmentZRanges;
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, xRanges, discardKeys, perSegmentXRanges, vtkm::Add());
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, yRanges, discardKeys, perSegmentYRanges, vtkm::Add());
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vtkm::cont::Algorithm::ReduceByKey(
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segmentIds, zRanges, discardKeys, perSegmentZRanges, vtkm::Add());
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//PRINT_TIMER("2.1", s21);
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// Expand the per segment bounding ranges, to per cell;
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RangePermutationArrayHandle segmentXRanges(segmentIds, perSegmentXRanges);
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RangePermutationArrayHandle segmentYRanges(segmentIds, perSegmentYRanges);
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RangePermutationArrayHandle segmentZRanges(segmentIds, perSegmentZRanges);
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//START_TIMER(s22);
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// Calculate split costs for NumPlanes split planes, across X, Y and Z dimensions
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vtkm::Id numSplitPlanes = numSegments * (this->NumPlanes + 1);
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vtkm::cont::ArrayHandle<vtkm::worklet::spatialstructure::SplitProperties> xSplits, ySplits,
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zSplits;
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xSplits.Allocate(numSplitPlanes);
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ySplits.Allocate(numSplitPlanes);
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zSplits.Allocate(numSplitPlanes);
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CalculateSplitCosts(this->NumPlanes, segmentXRanges, xRanges, centerXs, segmentIds, xSplits);
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CalculateSplitCosts(this->NumPlanes, segmentYRanges, yRanges, centerYs, segmentIds, ySplits);
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CalculateSplitCosts(this->NumPlanes, segmentZRanges, zRanges, centerZs, segmentIds, zSplits);
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//PRINT_TIMER("2.2", s22);
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segmentXRanges.ReleaseResourcesExecution();
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segmentYRanges.ReleaseResourcesExecution();
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segmentZRanges.ReleaseResourcesExecution();
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//START_TIMER(s23);
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// Select best split plane and dimension across X, Y, Z dimension, per segment
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SplitArrayHandle segmentSplits;
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vtkm::cont::ArrayHandle<vtkm::FloatDefault> segmentPlanes;
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vtkm::cont::ArrayHandle<vtkm::Id> splitChoices;
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CountingIdArrayHandle indices(0, 1, numSegments);
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vtkm::worklet::spatialstructure::SplitSelector worklet(
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this->NumPlanes, this->MaxLeafSize, this->NumPlanes + 1);
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invoker(worklet,
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indices,
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xSplits,
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ySplits,
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zSplits,
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segmentSizes,
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segmentSplits,
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segmentPlanes,
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splitChoices);
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//PRINT_TIMER("2.3", s23);
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// Expand the per segment split plane to per cell
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SplitPermutationArrayHandle splits(segmentIds, segmentSplits);
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CoordsPermutationArrayHandle planes(segmentIds, segmentPlanes);
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//START_TIMER(s31);
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IdArrayHandle leqFlags;
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invoker(vtkm::worklet::spatialstructure::CalculateSplitDirectionFlag{},
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centerXs,
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centerYs,
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centerZs,
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splits,
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planes,
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leqFlags);
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//PRINT_TIMER("3.1", s31);
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//START_TIMER(s32);
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IdArrayHandle scatterIndices = CalculateSplitScatterIndices(cellIds, leqFlags, segmentIds);
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IdArrayHandle newSegmentIds;
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IdPermutationArrayHandle sizes(segmentIds, segmentSizes);
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invoker(vtkm::worklet::spatialstructure::SegmentSplitter{ this->MaxLeafSize },
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segmentIds,
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leqFlags,
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sizes,
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newSegmentIds);
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//PRINT_TIMER("3.2", s32);
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//START_TIMER(s33);
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vtkm::cont::ArrayHandle<vtkm::Id> choices;
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vtkm::cont::Algorithm::Copy(IdPermutationArrayHandle(segmentIds, splitChoices), choices);
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cellIds = vtkm::worklet::spatialstructure::ScatterArray(cellIds, scatterIndices);
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segmentIds = vtkm::worklet::spatialstructure::ScatterArray(segmentIds, scatterIndices);
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newSegmentIds = vtkm::worklet::spatialstructure::ScatterArray(newSegmentIds, scatterIndices);
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xRanges = vtkm::worklet::spatialstructure::ScatterArray(xRanges, scatterIndices);
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yRanges = vtkm::worklet::spatialstructure::ScatterArray(yRanges, scatterIndices);
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zRanges = vtkm::worklet::spatialstructure::ScatterArray(zRanges, scatterIndices);
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centerXs = vtkm::worklet::spatialstructure::ScatterArray(centerXs, scatterIndices);
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centerYs = vtkm::worklet::spatialstructure::ScatterArray(centerYs, scatterIndices);
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centerZs = vtkm::worklet::spatialstructure::ScatterArray(centerZs, scatterIndices);
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choices = vtkm::worklet::spatialstructure::ScatterArray(choices, scatterIndices);
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//PRINT_TIMER("3.3", s33);
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// Move the cell ids at leafs to the processed cellids list
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//START_TIMER(s41);
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IdArrayHandle nonSplitSegmentSizes;
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invoker(vtkm::worklet::spatialstructure::NonSplitIndexCalculator{ this->MaxLeafSize },
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segmentSizes,
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nonSplitSegmentSizes);
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IdArrayHandle nonSplitSegmentIndices;
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vtkm::cont::Algorithm::ScanExclusive(nonSplitSegmentSizes, nonSplitSegmentIndices);
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IdArrayHandle runningSplitSegmentCounts;
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vtkm::Id numNewSegments =
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vtkm::cont::Algorithm::ScanExclusive(splitChoices, runningSplitSegmentCounts);
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//PRINT_TIMER("4.1", s41);
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//START_TIMER(s42);
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IdArrayHandle doneCellIds;
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vtkm::cont::Algorithm::CopyIf(
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cellIds, choices, doneCellIds, vtkm::worklet::spatialstructure::Invert());
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vtkm::cont::Algorithm::CopySubRange(
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doneCellIds, 0, doneCellIds.GetNumberOfValues(), this->ProcessedCellIds, cellIdsOffset);
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cellIds = vtkm::worklet::spatialstructure::CopyIfArray(cellIds, choices);
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newSegmentIds = vtkm::worklet::spatialstructure::CopyIfArray(newSegmentIds, choices);
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xRanges = vtkm::worklet::spatialstructure::CopyIfArray(xRanges, choices);
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yRanges = vtkm::worklet::spatialstructure::CopyIfArray(yRanges, choices);
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zRanges = vtkm::worklet::spatialstructure::CopyIfArray(zRanges, choices);
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centerXs = vtkm::worklet::spatialstructure::CopyIfArray(centerXs, choices);
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centerYs = vtkm::worklet::spatialstructure::CopyIfArray(centerYs, choices);
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centerZs = vtkm::worklet::spatialstructure::CopyIfArray(centerZs, choices);
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//PRINT_TIMER("4.2", s42);
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//START_TIMER(s43);
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// Make a new nodes with enough nodes for the current level, copying over the old one
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vtkm::Id nodesSize = this->Nodes.GetNumberOfValues() + numSegments;
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vtkm::cont::ArrayHandle<vtkm::exec::CellLocatorBoundingIntervalHierarchyNode> newTree;
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newTree.Allocate(nodesSize);
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vtkm::cont::Algorithm::CopySubRange(this->Nodes, 0, this->Nodes.GetNumberOfValues(), newTree);
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IdArrayHandle nextParentIndices;
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nextParentIndices.Allocate(2 * numNewSegments);
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CountingIdArrayHandle nodesIndices(nodesIndexOffset, 1, numSegments);
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vtkm::worklet::spatialstructure::TreeLevelAdder nodesAdder(
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cellIdsOffset, nodesSize, this->MaxLeafSize);
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invoker(nodesAdder,
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nodesIndices,
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segmentSplits,
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nonSplitSegmentIndices,
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segmentSizes,
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runningSplitSegmentCounts,
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parentIndices,
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newTree,
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nextParentIndices);
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nodesIndexOffset = nodesSize;
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cellIdsOffset += doneCellIds.GetNumberOfValues();
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this->Nodes = newTree;
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//PRINT_TIMER("4.3", s43);
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//START_TIMER(s51);
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segmentIds = newSegmentIds;
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segmentSizes = CalculateSegmentSizes(segmentIds, segmentIds.GetNumberOfValues());
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segmentIds = GenerateSegmentIds(segmentSizes, segmentIds.GetNumberOfValues());
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IdArrayHandle uniqueSegmentIds;
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vtkm::cont::Algorithm::Copy(segmentIds, uniqueSegmentIds);
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vtkm::cont::Algorithm::Unique(uniqueSegmentIds);
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numSegments = uniqueSegmentIds.GetNumberOfValues();
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done = segmentIds.GetNumberOfValues() == 0;
|
|
parentIndices = nextParentIndices;
|
|
//PRINT_TIMER("5.1", s51);
|
|
//std::cout << "Iteration time: " << iterationTimer.GetElapsedTime() << "\n";
|
|
}
|
|
//std::cout << "Total time: " << totalTimer.GetElapsedTime() << "\n";
|
|
}
|
|
|
|
struct CellLocatorBoundingIntervalHierarchy::MakeExecObject
|
|
{
|
|
template <typename CellSetType>
|
|
VTKM_CONT void operator()(const CellSetType& cellSet,
|
|
vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token,
|
|
const CellLocatorBoundingIntervalHierarchy& self,
|
|
ExecObjType& execObject) const
|
|
{
|
|
execObject = vtkm::exec::CellLocatorBoundingIntervalHierarchy<CellSetType>(
|
|
self.Nodes,
|
|
self.ProcessedCellIds,
|
|
cellSet,
|
|
self.GetCoordinates().GetDataAsMultiplexer(),
|
|
device,
|
|
token);
|
|
}
|
|
};
|
|
|
|
CellLocatorBoundingIntervalHierarchy::ExecObjType
|
|
CellLocatorBoundingIntervalHierarchy::PrepareForExecution(vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token) const
|
|
{
|
|
ExecObjType execObject;
|
|
vtkm::cont::CastAndCall(this->GetCellSet(), MakeExecObject{}, device, token, *this, execObject);
|
|
return execObject;
|
|
}
|
|
|
|
} //namespace cont
|
|
} //namespace vtkm
|