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/*=========================================================================
Program: ParaView
Module: vtkStructuredGridVolumeRepresentation.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkStructuredGridVolumeRepresentation.h"
#include "vtkAlgorithmOutput.h"
#include "vtkCommunicator.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkMath.h"
#include "vtkMultiProcessController.h"
#include "vtkObjectFactory.h"
#include "vtkPVRenderView.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkStructuredGrid.h"
#include "vtkTableExtentTranslator.h"
#include <assert.h>
vtkStandardNewMacro(vtkStructuredGridVolumeRepresentation);
//----------------------------------------------------------------------------
vtkStructuredGridVolumeRepresentation::vtkStructuredGridVolumeRepresentation()
{
this->UseDataParititions = false;
this->TableExtentTranslator = vtkTableExtentTranslator::New();
}
//----------------------------------------------------------------------------
vtkStructuredGridVolumeRepresentation::~vtkStructuredGridVolumeRepresentation()
{
this->TableExtentTranslator->Delete();
}
//----------------------------------------------------------------------------
void vtkStructuredGridVolumeRepresentation::SetUseDataParititions(bool val)
{
if (this->UseDataParititions != val)
{
this->UseDataParititions = val;
this->MarkModified();
}
}
//----------------------------------------------------------------------------
int vtkStructuredGridVolumeRepresentation::FillInputPortInformation(
int, vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkStructuredGrid");
info->Set(vtkAlgorithm::INPUT_IS_OPTIONAL(), 1);
return 1;
}
//----------------------------------------------------------------------------
int vtkStructuredGridVolumeRepresentation::RequestData(vtkInformation* request,
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
if (!this->Superclass::RequestData(request, inputVector, outputVector))
{
return 0;
}
this->TableExtentTranslator->SetNumberOfPieces(0);
this->TableExtentTranslator->SetNumberOfPiecesInTable(0);
if (inputVector[0]->GetNumberOfInformationObjects()==1 &&
this->UseDataParititions)
{
// reduce bounds across processes in parallel.
vtkMultiProcessController* controller =
vtkMultiProcessController::GetGlobalController();
int numProcs = controller->GetNumberOfProcesses();
if (numProcs > 1)
{
vtkStructuredGrid* grid = vtkStructuredGrid::GetData(inputVector[0], 0);
assert(grid != NULL);
// AllGather the local extents on each process and then build up the
// vtkTableExtentTranslator. vtkTableExtentTranslator is merely used as
// the datastructure to pass process->extent mapping to the rendering
// code.
this->TableExtentTranslator->SetNumberOfPieces(numProcs);
this->TableExtentTranslator->SetNumberOfPiecesInTable(numProcs);
int *gatheredExtents = new int[numProcs * 6];
int myExtents[6];
grid->GetExtent(myExtents);
controller->AllGather(myExtents, gatheredExtents, 6);
for (int cc=0; cc < numProcs; cc++)
{
this->TableExtentTranslator->SetExtentForPiece(
cc, gatheredExtents + 6*cc);
}
delete[] gatheredExtents;
//if (controller->GetLocalProcessId() == 0)
// {
// this->TableExtentTranslator->Print(cout);
// }
// Reduce bounds globally.
double bounds_max[3] = {VTK_DOUBLE_MIN, VTK_DOUBLE_MIN};
double bounds_min[3] = {VTK_DOUBLE_MAX, VTK_DOUBLE_MAX};
if (vtkMath::AreBoundsInitialized(this->DataBounds))
{
bounds_min[0] = this->DataBounds[0];
bounds_min[1] = this->DataBounds[2];
bounds_min[2] = this->DataBounds[4];
bounds_max[0] = this->DataBounds[1];
bounds_max[1] = this->DataBounds[3];
bounds_max[2] = this->DataBounds[5];
}
double reduced_bounds_max[3], reduced_bounds_min[3];
controller->AllReduce(bounds_max, reduced_bounds_max, 3,
vtkCommunicator::MAX_OP);
controller->AllReduce(bounds_min, reduced_bounds_min, 3,
vtkCommunicator::MIN_OP);
this->DataBounds[0] = reduced_bounds_min[0];
this->DataBounds[2] = reduced_bounds_min[1];
this->DataBounds[4] = reduced_bounds_min[2];
this->DataBounds[1] = reduced_bounds_max[0];
this->DataBounds[3] = reduced_bounds_max[1];
this->DataBounds[5] = reduced_bounds_max[2];
}
}
return 1;
}
//----------------------------------------------------------------------------
int vtkStructuredGridVolumeRepresentation::ProcessViewRequest(
vtkInformationRequestKey* request_type,
vtkInformation* inInfo, vtkInformation* outInfo)
{
if (!this->Superclass::ProcessViewRequest(request_type, inInfo, outInfo))
{
return 0;
}
if (request_type == vtkPVView::REQUEST_UPDATE())
{
if (this->GetNumberOfInputConnections(0) == 1 &&
this->UseDataParititions &&
this->TableExtentTranslator->GetNumberOfPiecesInTable() > 0)
{
vtkAlgorithmOutput* connection = this->GetInputConnection(0, 0);
vtkAlgorithm* inputAlgo = connection->GetProducer();
vtkStreamingDemandDrivenPipeline* sddp =
vtkStreamingDemandDrivenPipeline::SafeDownCast(inputAlgo->GetExecutive());
int whole_extent[6] = {1, -1, 1, -1, 1, -1};
sddp->GetWholeExtent(sddp->GetOutputInformation(connection->GetIndex()),
whole_extent);
double origin[3] = { this->DataBounds[0], this->DataBounds[2],
this->DataBounds[4] };
double spacing[3] = {
(this->DataBounds[1] - this->DataBounds[0]) / (whole_extent[1] - whole_extent[0] + 1),
(this->DataBounds[3] - this->DataBounds[2]) / (whole_extent[3] - whole_extent[2] + 1),
(this->DataBounds[5] - this->DataBounds[4]) / (whole_extent[5] - whole_extent[4] + 1)
};
vtkPVRenderView::SetOrderedCompositingInformation(inInfo, this,
this->TableExtentTranslator, whole_extent, origin, spacing);
}
else
{
double origin[3] = {0, 0, 0};
double spacing[3] = {1, 1, 1};
int whole_extent[6] = {1, -1, 1, -1, 1, -1};
// Unset the ordered compositing info, so that vtkPVRenderView will
// redistribute the unstructured grid as needed to volume render it.
vtkPVRenderView::SetOrderedCompositingInformation(inInfo, this,
NULL, whole_extent, origin, spacing);
}
// this is essential since this->Superclass::ProcessViewRequest(..) marks
// the data as redistributable, which it isn't in our case. We don't want
// the unstructured-grid we created from the structured-grid to be
// redistributed.
vtkPVRenderView::MarkAsRedistributable(inInfo, this, false);
}
return 1;
}
//----------------------------------------------------------------------------
void vtkStructuredGridVolumeRepresentation::PrintSelf(
ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "UseDataParititions: " << this->UseDataParititions << endl;
}
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