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122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
#include <iostream>
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#include "FEAdaptor.h"
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#include <vtkCompositeDataIterator.h>
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#include <vtkCPDataDescription.h>
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#include <vtkCPInputDataDescription.h>
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#include <vtkCPProcessor.h>
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#include <vtkCPPythonScriptPipeline.h>
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#include <vtkNew.h>
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#include <vtkNonOverlappingAMR.h>
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#include <vtkUniformGrid.h>
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namespace
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{
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vtkCPProcessor* Processor = NULL;
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vtkNonOverlappingAMR* VTKGrid;
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void BuildVTKGrid()
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{
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if(VTKGrid == NULL)
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{
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// The grid structure isn't changing so we only build it
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// the first time it's needed. If we needed the memory
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// we could delete it and rebuild as necessary.
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VTKGrid = vtkNonOverlappingAMR::New();
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}
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// Note that all of the vtkUniformGrids in the vtkNonOverlappingAMR
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// grid can use independent spacing, origin and extents. This is
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// shown in the mid-level grids in that they don't share an
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// origin. The highest level grid and lowest level grid do share
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// the same origin of (0,0,0) and thus need to have appropriate
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// extents and spacings as well.
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int numberOfLevels = 3;
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int blocksPerLevel[3] = {1, 2, 1};
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VTKGrid->Initialize(numberOfLevels, blocksPerLevel);
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// the highest level grid
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vtkNew<vtkUniformGrid> level0Grid;
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level0Grid->SetSpacing(4, 4, 4);
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level0Grid->SetOrigin(0, 0, 0);
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level0Grid->SetExtent(0, 10, 0, 20, 0, 20);
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VTKGrid->SetDataSet(0, 0, level0Grid.GetPointer());
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// the first mid-level grid
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vtkNew<vtkUniformGrid> level1Grid0;
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level1Grid0->SetSpacing(2, 2, 2);
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level1Grid0->SetOrigin(40, 0, 0);
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level1Grid0->SetExtent(0, 8, 0, 20, 0, 40);
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VTKGrid->SetDataSet(1, 0, level1Grid0.GetPointer());
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// the second mid-level grid
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vtkNew<vtkUniformGrid> level1Grid1;
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level1Grid1->SetSpacing(2, 2, 2);
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level1Grid1->SetOrigin(40, 40, 0);
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level1Grid1->SetExtent(0, 40, 0, 20, 0, 40);
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VTKGrid->SetDataSet(1, 1, level1Grid1.GetPointer());
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// the lowest level grid
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vtkNew<vtkUniformGrid> level2Grid;
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level2Grid->SetSpacing(1, 1, 2);
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level2Grid->SetOrigin(0, 0, 0);
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level2Grid->SetExtent(56, 120, 0, 40, 0, 40);
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VTKGrid->SetDataSet(2, 0, level2Grid.GetPointer());
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}
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}
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namespace FEAdaptor
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{
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void Initialize(int numScripts, char* scripts[])
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{
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if(Processor == NULL)
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{
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Processor = vtkCPProcessor::New();
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Processor->Initialize();
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}
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else
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{
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Processor->RemoveAllPipelines();
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}
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for(int i=1;i<numScripts;i++)
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{
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vtkNew<vtkCPPythonScriptPipeline> pipeline;
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pipeline->Initialize(scripts[i]);
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Processor->AddPipeline(pipeline.GetPointer());
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}
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}
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void Finalize()
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{
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if(Processor)
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{
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Processor->Delete();
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Processor = NULL;
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}
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if(VTKGrid)
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{
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VTKGrid->Delete();
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VTKGrid = NULL;
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}
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}
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void CoProcess(double time, unsigned int timeStep, bool lastTimeStep)
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{
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vtkNew<vtkCPDataDescription> dataDescription;
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dataDescription->AddInput("input");
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dataDescription->SetTimeData(time, timeStep);
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if(lastTimeStep == true)
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{
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// assume that we want to all the pipelines to execute if it
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// is the last time step.
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dataDescription->ForceOutputOn();
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}
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if(Processor->RequestDataDescription(dataDescription.GetPointer()) != 0)
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{
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BuildVTKGrid();
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dataDescription->GetInputDescriptionByName("input")->SetGrid(VTKGrid);
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Processor->CoProcess(dataDescription.GetPointer());
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}
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}
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} // end of Catalyst namespace
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