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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkBasicArchitectureTest.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "itkImage.h"
#include "itkVector.h"
#include "itkRandomImageSource.h"
#include "itkShrinkImageFilter.h"
#include "itkCommand.h"
#include "itkTextOutput.h"
// The following three classes are used to support callbacks
// on the shrink filter in the pipeline that follows later
class ShowProgressObject
{
public:
ShowProgressObject(itk::ProcessObject* o)
{m_Process = o;}
void ShowProgress()
{std::cout << "Progress " << m_Process->GetProgress() << std::endl;}
itk::ProcessObject::Pointer m_Process;
};
class StartEndEvent
{
public:
void Start()
{std::cout << "start event" << std::endl;}
void End()
{std::cout << "end event " << std::endl;}
};
class AllEvents
{
public:
void WatchEvents(itk::Object *caller, const itk::EventObject & event )
{
const char* eventName = 0;
if( typeid( event ) == typeid( itk::DeleteEvent ) )
{
eventName = "DeleteEvent";
}
else if( typeid( event ) == typeid( itk::StartEvent ) )
{
eventName = "StartEvent";
}
else if( typeid( event ) == typeid( itk::EndEvent ) )
{
eventName = "EndEvent";
}
else if( typeid( event ) == typeid( itk::ProgressEvent ) )
{
itk::ProcessObject* obj = dynamic_cast<itk::ProcessObject*>(caller);
std::cout << "AnyEvent Progress " << obj->GetProgress() << std::endl;
eventName = "ProgressEvent";
}
else if( typeid( event ) == typeid( itk::PickEvent ) )
{
eventName = "PickEvent";
}
else if( typeid( event ) == typeid( itk::StartPickEvent ) )
{
eventName = "StartPickEvent";
}
else if( typeid( event ) == typeid( itk::AbortCheckEvent ) )
{
eventName = "AbortCheckEvent";
}
else if( typeid( event ) == typeid( itk::ExitEvent ) )
{
eventName = "ExitEvent";
}
else
{
eventName = "UserEvent";
}
std::cout << "Event name: " << eventName << " Id: " << event.GetEventName() << std::endl;
}
};
int itkBasicArchitectureTest(int, char* [] )
{
// Comment the following if you want to use the itk text output window
itk::OutputWindow::SetInstance( itk::TextOutput::New() );
// Uncomment the following if you want to see each message independently
// itk::OutputWindow::GetInstance()->PromptUserOn();
// Test the creation of an image with native type
//
itk::Image<float,2>::Pointer if2 = itk::Image<float,2>::New();
std::cout << std::endl
<< "Image dimension is " << itk::Image<float,5>::ImageDimension
<< std::endl;
std::cout << "Image dimension is " << itk::Image<short,1>::ImageDimension
<< std::endl;
// Begin by creating a simple pipeline. Use a scalar ss a pixel.
//
// Create a typedef to make the code more digestable
typedef itk::Image<float,2> FloatImage2DType;
// Create a source object (in this case a random image generator).
// The source object is templated on the output type.
//
itk::RandomImageSource<FloatImage2DType>::Pointer random;
random = itk::RandomImageSource<FloatImage2DType>::New();
random->SetMin(0.0);
random->SetMax(1.0);
// Create a filter...shrink the image by an integral amount. We also
// add some callbacks to the start, progress, and end filter execution
// methods. The filter is templated on the input and output data types.
//
itk::ShrinkImageFilter<FloatImage2DType,FloatImage2DType>::Pointer shrink;
shrink = itk::ShrinkImageFilter<FloatImage2DType,FloatImage2DType>::New();
shrink->SetInput(random->GetOutput());
shrink->SetShrinkFactors(2);
// Create a command to call ShowProgress when progress event is triggered
ShowProgressObject progressWatch(shrink);
itk::SimpleMemberCommand<ShowProgressObject>::Pointer command;
command = itk::SimpleMemberCommand<ShowProgressObject>::New();
command->SetCallbackFunction(&progressWatch,
&ShowProgressObject::ShowProgress);
shrink->AddObserver(itk::ProgressEvent(), command);
// Create a command to call StartEndEvent when start event is triggered
StartEndEvent startEndWatch;
itk::SimpleMemberCommand<StartEndEvent>::Pointer start;
start = itk::SimpleMemberCommand<StartEndEvent>::New();
start->SetCallbackFunction(&startEndWatch, &StartEndEvent::Start);
unsigned long tag = shrink->AddObserver(itk::StartEvent(), start);
// Create a command to call StartEndEvent when end event is triggered
itk::SimpleMemberCommand<StartEndEvent>::Pointer end;
end = itk::SimpleMemberCommand<StartEndEvent>::New();
end->SetCallbackFunction(&startEndWatch, &StartEndEvent::End);
shrink->AddObserver(itk::EndEvent(), end);
// Create a command that to call AnyEvent when event is fired
AllEvents allWatch;
itk::MemberCommand<AllEvents>::Pointer allEvents;
allEvents = itk::MemberCommand<AllEvents>::New();
allEvents->SetCallbackFunction(&allWatch,
&AllEvents::WatchEvents);
shrink->AddObserver(itk::AnyEvent(), allEvents);
shrink->Update();
// test RemoveObserver code
shrink->RemoveObserver( tag );
return EXIT_SUCCESS;
}
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