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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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::GroupSpatialObject}
//
// A \doxygen{GroupSpatialObject} does not have
// any data associated with it. It can be used to group objects
// or to add transforms to a current object.
// In this example we show how to use a GroupSpatialObject.
//
// Let's begin by including the appropriate header file.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
#include "itkGroupSpatialObject.h"
// Software Guide : EndCodeSnippet
#include "itkEllipseSpatialObject.h"
int
main(int, char *[])
{
// Software Guide : BeginLatex
//
// The \doxygen{GroupSpatialObject} is templated
// over the dimensionality of the object.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
using GroupType = itk::GroupSpatialObject<3>;
auto myGroup = GroupType::New();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Next, we create an \doxygen{EllipseSpatialObject} and add it to
// the group.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
using EllipseType = itk::EllipseSpatialObject<3>;
auto myEllipse = EllipseType::New();
myEllipse->SetRadiusInObjectSpace(2);
myGroup->AddChild(myEllipse);
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// We then translate the group by 10mm in each direction.
// Therefore the ellipse is translated in physical space at the same time.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
GroupType::VectorType offset;
offset.Fill(10);
myGroup->GetModifiableObjectToParentTransform()->SetOffset(offset);
myGroup->Update();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// We can then query if a point is inside the group using the
// \code{IsInsideInWorldSpace()} function. We need to specify in this case
// that we want to consider all the hierarchy, therefore we set the depth
// to 2.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
GroupType::PointType point;
point.Fill(10);
std::cout << "Is my point " << point
<< " inside?: " << myGroup->IsInsideInWorldSpace(point, 2)
<< std::endl;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Like any other SpatialObjects we can remove the ellipse from the group
// using the \code{RemoveChild()} method.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
myGroup->RemoveChild(myEllipse);
// Software Guide : EndCodeSnippet
return EXIT_SUCCESS;
}
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