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vtkImageMask.cxx
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vtkImageMask.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkImageMask.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 "vtkImageMask.h"
#include "vtkObjectFactory.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkStreamingDemandDrivenPipeline.h"
vtkStandardNewMacro(vtkImageMask);
//----------------------------------------------------------------------------
vtkImageMask::vtkImageMask()
{
this->NotMask = 0;
this->MaskedOutputValue = new double[3];
this->MaskedOutputValueLength = 3;
this->MaskedOutputValue[0] = this->MaskedOutputValue[1]
= this->MaskedOutputValue[2] = 0.0;
this->MaskAlpha = 1.0;
this->SetNumberOfInputPorts(2);
}
//----------------------------------------------------------------------------
vtkImageMask::~vtkImageMask()
{
delete [] this->MaskedOutputValue;
}
//----------------------------------------------------------------------------
void vtkImageMask::SetImageInputData(vtkImageData *in)
{
this->SetInput1Data(in);
}
//----------------------------------------------------------------------------
void vtkImageMask::SetMaskInputData(vtkImageData *in)
{
this->SetInput2Data(in);
}
//----------------------------------------------------------------------------
void vtkImageMask::SetMaskedOutputValue(int num, double *v)
{
int idx;
if (num < 1)
{
vtkErrorMacro("Output value must have length greater than 0");
return;
}
if (num != this->MaskedOutputValueLength)
{
this->Modified();
}
if (num > this->MaskedOutputValueLength)
{
delete [] this->MaskedOutputValue;
this->MaskedOutputValue = new double[num];
this->MaskedOutputValueLength = num;
}
this->MaskedOutputValueLength = num;
for (idx = 0; idx < num; ++ idx)
{
if (this->MaskedOutputValue[idx] != v[idx])
{
this->Modified();
}
this->MaskedOutputValue[idx] = v[idx];
}
}
//----------------------------------------------------------------------------
// This templated function executes the filter for any type of data.
template <class T>
void vtkImageMaskExecute(vtkImageMask *self, int ext[6],
vtkImageData *in1Data, T *in1Ptr,
vtkImageData *in2Data, unsigned char *in2Ptr,
vtkImageData *outData, T *outPtr, int id)
{
int num0, num1, num2, numC, pixSize;
int idx0, idx1, idx2, idxC;
vtkIdType in1Inc0, in1Inc1, in1Inc2;
vtkIdType in2Inc0, in2Inc1, in2Inc2;
vtkIdType outInc0, outInc1, outInc2;
T *maskedValue;
double *v;
int nv;
int maskState;
double maskAlpha, oneMinusMaskAlpha;
unsigned long count = 0;
unsigned long target;
// create a masked output value with the correct length by cycling
numC = outData->GetNumberOfScalarComponents();
maskedValue = new T[numC];
v = self->GetMaskedOutputValue();
nv = self->GetMaskedOutputValueLength();
for (idx0 = 0, idx1 = 0; idx0 < numC; ++idx0, ++idx1)
{
if (idx1 >= nv)
{
idx1 = 0;
}
maskedValue[idx0] = static_cast<T>(v[idx1]);
}
pixSize = numC * sizeof(T);
maskState = self->GetNotMask();
maskAlpha = self->GetMaskAlpha();
oneMinusMaskAlpha = 1.0 - maskAlpha;
// Get information to march through data
in1Data->GetContinuousIncrements(ext, in1Inc0, in1Inc1, in1Inc2);
in2Data->GetContinuousIncrements(ext, in2Inc0, in2Inc1, in2Inc2);
outData->GetContinuousIncrements(ext, outInc0, outInc1, outInc2);
num0 = ext[1] - ext[0] + 1;
num1 = ext[3] - ext[2] + 1;
num2 = ext[5] - ext[4] + 1;
target = static_cast<unsigned long>(num2*num1/50.0);
target++;
// Loop through output pixels
for (idx2 = 0; idx2 < num2; ++idx2)
{
for (idx1 = 0; !self->AbortExecute && idx1 < num1; ++idx1)
{
if (!id)
{
if (!(count%target))
{
self->UpdateProgress(count/(50.0*target));
}
count++;
}
for (idx0 = 0; idx0 < num0; ++idx0)
{
if ( maskAlpha == 1.0 )
{
// Pixel operation
if (*in2Ptr && maskState == 1)
{
memcpy(outPtr, maskedValue, pixSize);
}
else if ( ! *in2Ptr && maskState == 0)
{
memcpy(outPtr, maskedValue, pixSize);
}
else
{
memcpy(outPtr, in1Ptr, pixSize);
}
in1Ptr += numC;
outPtr += numC;
}
else
{
// We need to do an over operation
int doMask = 0;
if ( *in2Ptr && maskState == 1 )
{
doMask = 1;
}
else if ( !*in2Ptr && maskState == 0 )
{
doMask = 1;
}
if ( doMask )
{
// Do an over operation
for ( idxC = 0; idxC < numC; ++idxC )
{
*outPtr = static_cast<T>(oneMinusMaskAlpha * *in1Ptr + maskedValue[idxC] * maskAlpha );
++outPtr;
++in1Ptr;
}
}
else
{
// Copy verbatim
for ( idxC = 0; idxC < numC; ++idxC )
{
*outPtr = *in1Ptr;
++outPtr;
++in1Ptr;
}
}
}
in2Ptr += 1;
}
in1Ptr += in1Inc1;
in2Ptr += in2Inc1;
outPtr += outInc1;
}
in1Ptr += in1Inc2;
in2Ptr += in2Inc2;
outPtr += outInc2;
}
delete [] maskedValue;
}
//----------------------------------------------------------------------------
// This method is passed a input and output Datas, and executes the filter
// algorithm to fill the output from the inputs.
// It just executes a switch statement to call the correct function for
// the Datas data types.
void vtkImageMask::ThreadedRequestData(
vtkInformation * vtkNotUsed( request ),
vtkInformationVector ** vtkNotUsed( inputVector ),
vtkInformationVector * vtkNotUsed( outputVector ),
vtkImageData ***inData,
vtkImageData **outData,
int outExt[6], int id)
{
void *inPtr1;
void *inPtr2;
void *outPtr;
int *tExt;
inPtr1 = inData[0][0]->GetScalarPointerForExtent(outExt);
inPtr2 = inData[1][0]->GetScalarPointerForExtent(outExt);
outPtr = outData[0]->GetScalarPointerForExtent(outExt);
tExt = inData[1][0]->GetExtent();
if (tExt[0] > outExt[0] || tExt[1] < outExt[1] ||
tExt[2] > outExt[2] || tExt[3] < outExt[3] ||
tExt[4] > outExt[4] || tExt[5] < outExt[5])
{
vtkErrorMacro("Mask extent not large enough");
return;
}
if (inData[1][0]->GetNumberOfScalarComponents() != 1)
{
vtkErrorMacro("Masks can have one component");
}
if (inData[0][0]->GetScalarType() != outData[0]->GetScalarType() ||
inData[1][0]->GetScalarType() != VTK_UNSIGNED_CHAR)
{
vtkErrorMacro(<< "Execute: image ScalarType ("
<< inData[0][0]->GetScalarType() << ") must match out ScalarType ("
<< outData[0]->GetScalarType() << "), and mask scalar type ("
<< inData[1][0]->GetScalarType() << ") must be unsigned char.");
return;
}
switch (inData[0][0]->GetScalarType())
{
vtkTemplateMacro(
vtkImageMaskExecute(this, outExt, inData[0][0],
static_cast<VTK_TT *>(inPtr1), inData[1][0],
static_cast<unsigned char *>(inPtr2),
outData[0], static_cast<VTK_TT *>(outPtr),id));
default:
vtkErrorMacro(<< "Execute: Unknown ScalarType");
return;
}
}
//----------------------------------------------------------------------------
// The output extent is the intersection.
int vtkImageMask::RequestInformation (
vtkInformation * vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *inInfo2 = inputVector[1]->GetInformationObject(0);
int ext[6], ext2[6], idx;
inInfo->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),ext);
inInfo2->Get(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),ext2);
for (idx = 0; idx < 3; ++idx)
{
if (ext2[idx*2] > ext[idx*2])
{
ext[idx*2] = ext2[idx*2];
}
if (ext2[idx*2+1] < ext[idx*2+1])
{
ext[idx*2+1] = ext2[idx*2+1];
}
}
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),ext,6);
return 1;
}
void vtkImageMask::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
int idx;
os << indent << "MaskedOutputValue: " << this->MaskedOutputValue[0];
for (idx = 1; idx < this->MaskedOutputValueLength; ++idx)
{
os << ", " << this->MaskedOutputValue[idx];
}
os << endl;
os << indent << "NotMask: " << (this->NotMask ? "On\n" : "Off\n");
os << indent << "MaskAlpha: " << this->MaskAlpha << "\n";
}