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143 lines
4.0 KiB
143 lines
4.0 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkVolumeMapper.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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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 "vtkVolumeMapper.h"
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#include "vtkDataSet.h"
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#include "vtkExecutive.h"
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#include "vtkGarbageCollector.h"
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#include "vtkImageData.h"
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#include "vtkInformation.h"
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vtkCxxRevisionMacro(vtkVolumeMapper, "$Revision: 1.2 $");
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// Construct a vtkVolumeMapper with empty scalar input and clipping off.
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vtkVolumeMapper::vtkVolumeMapper()
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{
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int i;
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this->BlendMode = vtkVolumeMapper::COMPOSITE_BLEND;
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this->Cropping = 0;
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for ( i = 0; i < 3; i++ )
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{
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this->CroppingRegionPlanes[2*i ] = 0;
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this->CroppingRegionPlanes[2*i + 1] = 1;
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this->VoxelCroppingRegionPlanes[2*i] = 0;
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this->VoxelCroppingRegionPlanes[2*i + 1] = 1;
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}
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this->CroppingRegionFlags = VTK_CROP_SUBVOLUME;
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}
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vtkVolumeMapper::~vtkVolumeMapper()
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{
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}
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void vtkVolumeMapper::ConvertCroppingRegionPlanesToVoxels()
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{
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double *spacing = this->GetInput()->GetSpacing();
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int *dimensions = this->GetInput()->GetDimensions();
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double origin[3];
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double *bds = this->GetInput()->GetBounds();
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origin[0] = bds[0];
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origin[1] = bds[2];
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origin[2] = bds[4];
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for ( int i = 0; i < 6; i++ )
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{
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this->VoxelCroppingRegionPlanes[i] =
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(this->CroppingRegionPlanes[i] - origin[i/2]) / spacing[i/2];
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this->VoxelCroppingRegionPlanes[i] =
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( this->VoxelCroppingRegionPlanes[i] < 0 ) ?
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( 0 ) : ( this->VoxelCroppingRegionPlanes[i] );
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this->VoxelCroppingRegionPlanes[i] =
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( this->VoxelCroppingRegionPlanes[i] > dimensions[i/2]-1 ) ?
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( dimensions[i/2]-1 ) : ( this->VoxelCroppingRegionPlanes[i] );
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}
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}
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void vtkVolumeMapper::SetInput( vtkDataSet *genericInput )
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{
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vtkImageData *input =
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vtkImageData::SafeDownCast( genericInput );
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if ( input )
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{
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this->SetInput( input );
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}
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else
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{
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vtkErrorMacro("The SetInput method of this mapper requires vtkImageData as input");
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}
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}
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void vtkVolumeMapper::SetInput( vtkImageData *input )
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{
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if(input)
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{
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this->SetInputConnection(0, input->GetProducerPort());
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}
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else
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{
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// Setting a NULL input removes the connection.
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this->SetInputConnection(0, 0);
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}
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}
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vtkImageData *vtkVolumeMapper::GetInput()
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{
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if (this->GetNumberOfInputConnections(0) < 1)
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{
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return 0;
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}
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return vtkImageData::SafeDownCast(
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this->GetExecutive()->GetInputData(0, 0));
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}
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// Print the vtkVolumeMapper
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void vtkVolumeMapper::PrintSelf(ostream& os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os,indent);
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os << indent << "Cropping: " << (this->Cropping ? "On\n" : "Off\n");
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os << indent << "Cropping Region Planes: " << endl
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<< indent << " In X: " << this->CroppingRegionPlanes[0]
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<< " to " << this->CroppingRegionPlanes[1] << endl
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<< indent << " In Y: " << this->CroppingRegionPlanes[2]
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<< " to " << this->CroppingRegionPlanes[3] << endl
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<< indent << " In Z: " << this->CroppingRegionPlanes[4]
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<< " to " << this->CroppingRegionPlanes[5] << endl;
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os << indent << "Cropping Region Flags: "
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<< this->CroppingRegionFlags << endl;
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os << indent << "BlendMode: " << this->BlendMode << endl;
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// Don't print this->VoxelCroppingRegionPlanes
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}
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//----------------------------------------------------------------------------
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int vtkVolumeMapper::FillInputPortInformation(int port, vtkInformation* info)
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{
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if(!this->Superclass::FillInputPortInformation(port, info))
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{
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return 0;
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}
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info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkImageData");
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return 1;
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}
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