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