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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::SurfaceSpatialObject}
//
// \doxygen{SurfaceSpatialObject} defines a surface in n-dimensional space.
// A \code{SurfaceSpatialObject} is defined by a list of points which lie on
// the surface. Each point has a position and a normal. The example begins by
// including the appropriate header file.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
#include "itkSurfaceSpatialObject.h"
// Software Guide : EndCodeSnippet
int
main(int, char *[])
{
// Software Guide : BeginLatex
//
// \code{SurfaceSpatialObject} is templated over the dimension of the space.
// A \code{SurfaceSpatialObject} contains a list of
// \code{SurfaceSpatialObjectPoint}s. A
// \code{SurfaceSpatialObjectPoint} has a position, a normal and a color.
//
// First we define some type definitions
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
using SurfaceType = itk::SurfaceSpatialObject<3>;
using SurfacePointer = SurfaceType::Pointer;
using SurfacePointType = SurfaceType::SurfacePointType;
using CovariantVectorType = SurfaceType::CovariantVectorType;
using PointType = SurfaceType::PointType;
SurfacePointer surface = SurfaceType::New();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// We create a point list and we set the position of each point in the local
// coordinate system using the \code{SetPositionInObjectSpace()} method. We
// also set the color of each point to red.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
SurfaceType::SurfacePointListType list;
for (unsigned int i = 0; i < 3; ++i)
{
SurfacePointType p;
PointType pnt;
pnt[0] = i;
pnt[1] = i + 1;
pnt[2] = i + 2;
p.SetPositionInObjectSpace(pnt);
p.SetColor(1, 0, 0, 1);
CovariantVectorType normal;
for (unsigned int j = 0; j < 3; ++j)
{
normal[j] = j;
}
p.SetNormalInObjectSpace(normal);
list.push_back(p);
}
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Next, we create the surface and set his name using \code{SetName()}. We
// also set its Identification number with \code{SetId()} and we add the
// list of points previously created.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
surface->GetProperty().SetName("Surface1");
surface->SetId(1);
surface->SetPoints(list);
surface->Update();
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// The \code{GetPoints()} method returns a reference to the internal list of
// points of the object.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
SurfaceType::SurfacePointListType pointList = surface->GetPoints();
std::cout << "Number of points representing the surface: ";
std::cout << pointList.size() << std::endl;
// Software Guide : EndCodeSnippet
// Software Guide : BeginLatex
//
// Then we can access the points using standard STL iterators.
// \code{GetPositionInObjectSpace()} and \code{GetColor()} functions return
// respectively
// the position and the color of the point. \code{GetNormalInObjectSpace()}
// returns the
// normal as a \doxygen{CovariantVector}.
//
// Software Guide : EndLatex
// Software Guide : BeginCodeSnippet
SurfaceType::SurfacePointListType::const_iterator it =
surface->GetPoints().begin();
while (it != surface->GetPoints().end())
{
std::cout << "Position = " << (*it).GetPositionInObjectSpace()
<< std::endl;
std::cout << "Normal = " << (*it).GetNormalInObjectSpace() << std::endl;
std::cout << "Color = " << (*it).GetColor() << std::endl;
std::cout << std::endl;
it++;
}
// Software Guide : EndCodeSnippet
return EXIT_SUCCESS;
}
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