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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
// Software Guide : BeginLatex
//
// \index{itk::SceneSpatialObject}
// This example describes how to use the \doxygen{SceneSpatialObject}.
// A SceneSpatialObject contains a collection of SpatialObjects. This
// example begins by including the appropriate header file.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
#include "itkSceneSpatialObject.h"
// Software Guide : EndCodeSnippet
#include "itkEllipseSpatialObject.h"
int main( int , char *[] )
{
// Software Guide : BeginLatex
//
// An SceneSpatialObject is templated over the dimension of the
// space which requires all the objects referenced by the SceneSpatialObject to
// have the same dimension.
//
// First we define some type definitions and we create the SceneSpatialObject.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
typedef itk::SceneSpatialObject<3> SceneSpatialObjectType;
SceneSpatialObjectType::Pointer scene = SceneSpatialObjectType::New();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Then we create two \doxygen{EllipseSpatialObject}s.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
typedef itk::EllipseSpatialObject<3> EllipseType;
EllipseType::Pointer ellipse1 = EllipseType::New();
ellipse1->SetRadius(1);
ellipse1->SetId(1);
EllipseType::Pointer ellipse2 = EllipseType::New();
ellipse2->SetId(2);
ellipse2->SetRadius(2);
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Then we add the two ellipses into the SceneSpatialObject.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
scene->AddSpatialObject(ellipse1);
scene->AddSpatialObject(ellipse2);
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// We can query the number of object in the SceneSpatialObject with the
// \code{GetNumberOfObjects()} function. This function takes two optional
// arguments: the depth at which we should count the number of objects
// (default is set to infinity) and the name of the object to count (default
// is set to ITK\_NULLPTR). This allows the user to count, for example, only
// ellipses.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
std::cout << "Number of objects in the SceneSpatialObject = ";
std::cout << scene->GetNumberOfObjects() << std::endl;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The \code{GetObjectById()} returns the first object in the
// SceneSpatialObject that has the specified identification number.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
std::cout << "Object in the SceneSpatialObject with an ID == 2: "
<< std::endl;
scene->GetObjectById(2)->Print(std::cout);
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Objects can also be removed from the SceneSpatialObject using the
// \code{RemoveSpatialObject()} function.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
scene->RemoveSpatialObject(ellipse1);
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The list of current objects in the SceneSpatialObject can be retrieved
// using the \code{GetObjects()} method. Like the
// \code{GetNumberOfObjects()} method, \code{GetObjects()} can take two
// arguments: a search depth and a matching name.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
SceneSpatialObjectType::ObjectListType * myObjectList = scene->GetObjects();
std::cout << "Number of objects in the SceneSpatialObject = ";
std::cout << myObjectList->size() << std::endl;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// In some cases, it is useful to define the hierarchy by using
// \code{ParentId()} and the current identification number. This results in
// having a flat list of SpatialObjects in the SceneSpatialObject. Therefore,
// the SceneSpatialObject provides the \code{FixHierarchy()} method which
// reorganizes the Parent-Child hierarchy based on identification numbers.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
scene->FixHierarchy();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The scene can also be cleared by using the \code{Clear()} function.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
scene->Clear();
// Software Guide : EndCodeSnippet
return EXIT_SUCCESS;
}
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