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vtkImageBSplineCoefficients.cxx
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vtkImageBSplineCoefficients.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageBSplineCoefficients.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 "vtkImageBSplineCoefficients.h"
#include "vtkImageBSplineInternals.h"
#include "vtkMath.h"
#include "vtkDataArray.h"
#include "vtkImageData.h"
#include "vtkPointData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkTemplateAliasMacro.h"
#include <cstddef>
vtkStandardNewMacro(vtkImageBSplineCoefficients);
//----------------------------------------------------------------------------
vtkImageBSplineCoefficients::vtkImageBSplineCoefficients()
{
this->SplineDegree = 3;
this->BorderMode = VTK_IMAGE_BORDER_CLAMP;
this->OutputScalarType = VTK_FLOAT;
this->Bypass = 0;
this->DataWasPassed = 0;
this->Iteration = 0;
}
//----------------------------------------------------------------------------
vtkImageBSplineCoefficients::~vtkImageBSplineCoefficients()
{
}
//----------------------------------------------------------------------------
void vtkImageBSplineCoefficients::AllocateOutputData(
vtkImageData *vtkNotUsed(output), vtkInformation *vtkNotUsed(outInfo), int *vtkNotUsed(uExtent))
{
// turn into a no-op, we allocate our output manually
}
//----------------------------------------------------------------------------
vtkImageData *vtkImageBSplineCoefficients::AllocateOutputData(
vtkDataObject *output, vtkInformation *vtkNotUsed(outInfo))
{
// turn into a no-op, we allocate our output manually
vtkImageData *out = vtkImageData::SafeDownCast(output);
return out;
}
//----------------------------------------------------------------------------
int vtkImageBSplineCoefficients::RequestData(
vtkInformation* request, vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkImageData *inData = vtkImageData::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
vtkImageData *outData = vtkImageData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
if (this->Bypass)
{
// directly pass the scalars to the output
outData->SetExtent(inData->GetExtent());
outData->GetPointData()->PassData(inData->GetPointData());
this->DataWasPassed = 1;
return 1;
}
else if (this->DataWasPassed)
{
// force reallocation of the scalars
outData->GetPointData()->SetScalars(NULL);
this->DataWasPassed = 0;
}
// Allocate the output data
outData->SetExtent(outInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT()));
outData->AllocateScalars(outInfo);
if (outData->GetScalarType() != VTK_FLOAT &&
outData->GetScalarType() != VTK_DOUBLE)
{
vtkErrorMacro(<< "Execute: output data must be be type float or double.");
return 0;
}
// copy the data to the output
int ie[6], oe[6];
inData->GetExtent(ie);
outData->GetExtent(oe);
if (ie[0] == oe[0] && ie[1] == oe[1] && ie[2] == oe[2] &&
ie[3] == oe[3] && ie[4] == oe[4] && ie[5] == oe[5])
{
outData->GetPointData()->GetScalars()->DeepCopy(
inData->GetPointData()->GetScalars());
}
else
{
vtkErrorMacro(<< "Execute: input and output extents do not match: "
<< "(" << ie[0] << "," << ie[1] << "," << ie[2] << ","
<< ie[3] << "," << ie[4] << "," << ie[5] << ") vs. "
<< "(" << oe[0] << "," << oe[1] << "," << oe[2] << ","
<< oe[3] << "," << oe[4] << "," << oe[5] << ")");
return 0;
}
// if spline degree is < 2, no operation is required
if (this->SplineDegree < 2)
{
return 1;
}
// We are about to call superclass' RequestData which allocates output
// based on the update extent. However, we want the output to be the
// whole extent. So we temprarily override the update extent to be
// the whole extent.
int extentcache[6];
memcpy(extentcache, outInfo->Get(
vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT()),
6*sizeof(int));
outInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),
outInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT()), 6);
// execute over the three directions
for (int i = 0; i < 3; i++)
{
this->Iteration = i;
if (ie[2*i+1] > ie[2*i])
{
if (!this->vtkThreadedImageAlgorithm::RequestData(
request, &outputVector, outputVector))
{
return 0;
}
}
}
// Restore update extent
outInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),
extentcache,
6);
return 1;
}
//----------------------------------------------------------------------------
int vtkImageBSplineCoefficients::RequestInformation(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
int numComponents = 1;
int scalarType = VTK_FLOAT;
vtkInformation *inScalarInfo =
vtkDataObject::GetActiveFieldInformation(inInfo,
vtkDataObject::FIELD_ASSOCIATION_POINTS,
vtkDataSetAttributes::SCALARS);
if (inScalarInfo)
{
if (inScalarInfo->Has(vtkDataObject::FIELD_NUMBER_OF_COMPONENTS()))
{
numComponents =
inScalarInfo->Get(vtkDataObject::FIELD_NUMBER_OF_COMPONENTS());
}
scalarType = inScalarInfo->Get(vtkDataObject::FIELD_ARRAY_TYPE());
}
if (this->Bypass)
{
vtkDataObject::SetPointDataActiveScalarInfo(
outInfo, scalarType, numComponents);
}
else if (this->OutputScalarType == VTK_DOUBLE)
{
vtkDataObject::SetPointDataActiveScalarInfo(
outInfo, VTK_DOUBLE, numComponents);
}
else
{
vtkDataObject::SetPointDataActiveScalarInfo(
outInfo, VTK_FLOAT, numComponents);
}
return 1;
}
//----------------------------------------------------------------------------
int vtkImageBSplineCoefficients::RequestUpdateExtent(
vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
int extent[6];
if (this->Bypass)
{
// in bypass mode, just pass the update extent
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent);
}
else
{
// the whole input extent is required every time
inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), extent);
}
inInfo->Set(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), extent, 6);
return 1;
}
//----------------------------------------------------------------------------
// For streaming and threads. Splits output update extent into num pieces.
// This method needs to be called num times. Results must not overlap for
// consistent starting extent. This particular filter requires splitting
// along different directions depending on the iteration.
int vtkImageBSplineCoefficients::SplitExtent(
int splitExt[6], int fullExt[6], int num, int total)
{
static int splitAxisPriority[3][2] = {
{ 2, 1 }, { 2, 0 }, { 1, 0 } };
// start with same extent
for (int i = 0; i < 6; i++)
{
splitExt[i] = fullExt[i];
}
int axis = this->Iteration;
int splitAxis = splitAxisPriority[axis][0];
int minIdx = fullExt[splitAxis*2];
int maxIdx = fullExt[splitAxis*2 + 1];
int size = maxIdx - minIdx + 1;
if (size == 1)
{
splitAxis = splitAxisPriority[axis][1];
minIdx = fullExt[splitAxis*2];
maxIdx = fullExt[splitAxis*2 + 1];
size = maxIdx - minIdx + 1;
}
// determine the actual number of pieces that will be generated
if (size < total)
{
total = size;
}
// make sure that num isn't greater than the number of possible splits
if (num < total)
{
splitExt[splitAxis*2] = minIdx + size*num/total;
splitExt[splitAxis*2 + 1] = minIdx + size*(num + 1)/total - 1;
}
return total;
}
//----------------------------------------------------------------------------
template <class T>
void vtkImageBSplineCoefficientsExecute(
vtkImageBSplineCoefficients* self,
vtkImageData* inData, vtkImageData* outData, T *inPtr, T *outPtr,
int extent[6], int axis, int threadId)
{
// change the order so the inner loop is the chosen axis
static int permute[3][3] = {
{ 0, 1, 2 }, { 1, 0, 2 }, { 2, 0, 1 } };
int borderMode = self->GetBorderMode();
int inExtent[6];
inData->GetExtent(inExtent);
int inMin0 = inExtent[2*permute[axis][0]];
int inMax0 = inExtent[2*permute[axis][0] + 1];
int outMin0 = extent[2*permute[axis][0]];
int outMax0 = extent[2*permute[axis][0] + 1];
int outMin1 = extent[2*permute[axis][1]];
int outMax1 = extent[2*permute[axis][1] + 1];
int outMin2 = extent[2*permute[axis][2]];
int outMax2 = extent[2*permute[axis][2] + 1];
vtkIdType inInc[6];
inData->GetIncrements(inInc);
vtkIdType inInc0 = inInc[permute[axis][0]];
vtkIdType inInc1 = inInc[permute[axis][1]];
vtkIdType inInc2 = inInc[permute[axis][2]];
vtkIdType outInc[6];
outData->GetIncrements(outInc);
vtkIdType outInc0 = outInc[permute[axis][0]];
vtkIdType outInc1 = outInc[permute[axis][1]];
vtkIdType outInc2 = outInc[permute[axis][2]];
int numscalars = outData->GetNumberOfScalarComponents();
// for progress reporting
unsigned long count = 0;
unsigned long target = static_cast<unsigned long>(
0.02*(outMax2-outMin2+1)*(outMax1-outMin1+1));
target++;
// Get the poles for the spline
double poles[4];
long numPoles;
vtkImageBSplineInternals::GetPoleValues(
poles, numPoles, self->GetSplineDegree());
// allocate workspace for one row
double* image = new double[inMax0 - inMin0 + 1];
// loop over all the extra axes
T *inPtr2 = inPtr - (outMin0 - inMin0)*inInc0;
T *outPtr2 = outPtr;
for (int idx2 = outMin2; idx2 <= outMax2; idx2++)
{
T *inPtr1 = inPtr2;
T *outPtr1 = outPtr2;
for (int idx1 = outMin1; !self->AbortExecute && idx1 <= outMax1; idx1++)
{
if (threadId == 0 && count % target == 0)
{
self->UpdateProgress((axis + count/(50.0*target))/3.0);
}
count++;
// loop over components
for (int idxC = 0; idxC < numscalars; idxC++)
{
T *inPtr0 = inPtr1 + idxC;
T *outPtr0 = outPtr1 + idxC;
double *imagePtr = image;
for (int jdx0 = inMin0; jdx0 <= inMax0; jdx0++)
{
*imagePtr++ = static_cast<double>(*inPtr0);
inPtr0 += inInc0;
}
// Call the code that generates the b-spline knots,
vtkImageBSplineInternals::ConvertToInterpolationCoefficients(
image, inMax0 - inMin0 + 1, borderMode, poles, numPoles,
VTK_DBL_EPSILON);
// Copy to output
imagePtr = image + (outMin0 - inMin0);
for (int idx0 = outMin0; idx0 <= outMax0; idx0++)
{
*outPtr0 = *imagePtr++;
outPtr0 += outInc0;
}
}
inPtr1 += inInc1;
outPtr1 += outInc1;
}
inPtr2 += inInc2;
outPtr2 += outInc2;
}
delete [] image;
}
//----------------------------------------------------------------------------
// This is called three times (once per dimension)
void vtkImageBSplineCoefficients::ThreadedExecute(
vtkImageData *inData, vtkImageData *outData, int outExt[6], int threadId)
{
void *inPtr = inData->GetScalarPointerForExtent(outExt);
void *outPtr = outData->GetScalarPointerForExtent(outExt);
if (outData->GetScalarType() == VTK_FLOAT)
{
vtkImageBSplineCoefficientsExecute(
this, inData, outData,
static_cast<float*>(inPtr), static_cast<float*>(outPtr),
outExt, this->Iteration, threadId);
}
else if (outData->GetScalarType() == VTK_DOUBLE)
{
vtkImageBSplineCoefficientsExecute(
this, inData, outData,
static_cast<double*>(inPtr), static_cast<double*>(outPtr),
outExt, this->Iteration, threadId);
}
}
//----------------------------------------------------------------------------
void vtkImageBSplineCoefficients::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << "SplineDegree: " << this->SplineDegree << "\n";
os << "BorderMode: " << this->GetBorderModeAsString() << "\n";
os << "OutputScalarType: " << this->GetOutputScalarTypeAsString() << "\n";
os << "Bypass: " << (this->Bypass ? "On\n" : "Off\n" );
}
//----------------------------------------------------------------------------
const char *vtkImageBSplineCoefficients::GetBorderModeAsString()
{
switch (this->BorderMode)
{
case VTK_IMAGE_BORDER_CLAMP:
return "Clamp";
case VTK_IMAGE_BORDER_MIRROR:
return "Mirror";
case VTK_IMAGE_BORDER_REPEAT:
return "Repeat";
default:
break;
}
return "Unknown";
}
//----------------------------------------------------------------------------
const char *vtkImageBSplineCoefficients::GetOutputScalarTypeAsString()
{
return vtkImageScalarTypeNameMacro(this->OutputScalarType);
}
//----------------------------------------------------------------------------
int vtkImageBSplineCoefficients::CheckBounds(const double point[3])
{
double *bounds = this->GetOutput()->GetBounds();
for (int i = 0; i < 3; i++)
{
double a = bounds[0];
double b = bounds[1];
if ((b - a) > 1e-16 && (point[i] < a || point[i] > b))
{
return 0;
}
bounds++;
}
return 1;
}
//----------------------------------------------------------------------------
void vtkImageBSplineCoefficients::Evaluate(const double p[3], double *val)
{
vtkImageData *output = this->GetOutput();
int extent[6];
double spacing[3], origin[3];
output->GetExtent(extent);
output->GetOrigin(origin);
output->GetSpacing(spacing);
int width = extent[1] - extent[0] + 1;
int height = extent[3] - extent[2] + 1;
int slices = extent[5] - extent[4] + 1;
double x = (p[0] - origin[0])/spacing[0] - extent[0];
double y = (p[1] - origin[1])/spacing[1] - extent[2];
double z = (p[2] - origin[2])/spacing[2] - extent[4];
if (width < 1 || height < 1 || slices < 1)
{
vtkErrorMacro("Called Evaluate() on empty extent");
return;
}
int numscalars = output->GetNumberOfScalarComponents();
int scalarType = output->GetScalarType();
if (scalarType == VTK_FLOAT)
{
float *coeffs = static_cast<float *>(output->GetScalarPointer());
float value4[4];
float *value = value4;
if (numscalars > 4)
{
value = new float[numscalars];
}
vtkImageBSplineInternals::InterpolatedValue(
coeffs, value, width, height, slices, numscalars, x, y, z,
this->SplineDegree, this->BorderMode);
for (int i = 0; i < numscalars; i++)
{
val[i] = value[i];
}
if (value != value4)
{
delete [] value;
}
}
else if (scalarType == VTK_DOUBLE)
{
double *coeffs = static_cast<double *>(output->GetScalarPointer());
vtkImageBSplineInternals::InterpolatedValue(
coeffs, val, width, height, slices, numscalars, x, y, z,
this->SplineDegree, this->BorderMode);
}
else
{
vtkErrorMacro("Called Evaluate(), but data is not float or double.");
}
}
//----------------------------------------------------------------------------
double vtkImageBSplineCoefficients::Evaluate(double x, double y, double z)
{
vtkImageData *output = this->GetOutput();
int extent[6];
double spacing[3], origin[3];
output->GetExtent(extent);
output->GetOrigin(origin);
output->GetSpacing(spacing);
int width = extent[1] - extent[0] + 1;
int height = extent[3] - extent[2] + 1;
int slices = extent[5] - extent[4] + 1;
x = (x - origin[0])/spacing[0] - extent[0];
y = (y - origin[1])/spacing[1] - extent[2];
z = (z - origin[2])/spacing[2] - extent[4];
if (width < 1 || height < 1 || slices < 1)
{
vtkErrorMacro("Called Evaluate() on empty extent");
return 0.0;
}
int numscalars = output->GetNumberOfScalarComponents();
int scalarType = output->GetScalarType();
if (scalarType == VTK_FLOAT)
{
float *coeffs = static_cast<float *>(output->GetScalarPointer());
float value4[4];
float *value = value4;
if (numscalars > 4)
{
value = new float[numscalars];
}
vtkImageBSplineInternals::InterpolatedValue(
coeffs, value, width, height, slices, numscalars, x, y, z,
this->SplineDegree, this->BorderMode);
if (value != value4)
{
value4[0] = value[0];
delete [] value;
value = value4;
}
return value[0];
}
else if (scalarType == VTK_DOUBLE)
{
double *coeffs = static_cast<double *>(output->GetScalarPointer());
double value4[4];
double *value = value4;
if (numscalars > 4)
{
value = new double[numscalars];
}
vtkImageBSplineInternals::InterpolatedValue(
coeffs, value, width, height, slices, numscalars, x, y, z,
this->SplineDegree, this->BorderMode);
if (value != value4)
{
value4[0] = value[0];
delete [] value;
value = value4;
}
return value[0];
}
else
{
vtkErrorMacro("Called Evaluate(), but data is not float or double.");
}
return 0;
}