Examples/SpatialObjects/ArrowSpatialObject.cxx

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 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
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// Software Guide : BeginLatex
//
// \index{itk::ArrowSpatialObject}
//
// This example shows how to create an \doxygen{ArrowSpatialObject}.
// Let's begin by including the appropriate header file.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
#include "itkArrowSpatialObject.h"
// Software Guide : EndCodeSnippet

int main( int , char *[] )
{
// Software Guide : BeginLatex
//
// The \doxygen{ArrowSpatialObject}, like many SpatialObjects, is templated
// over the dimensionality of the object.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  using ArrowType = itk::ArrowSpatialObject<3>;
  ArrowType::Pointer myArrow = ArrowType::New();
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// The position of the arrow in the object (local) coordinate frame is done
// using the \code{SetPositionInObjectSpace()} method. By default the position
// is set to the origin of the space.  This is the "tip" of the arrow.
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  ArrowType::PointType pos;
  pos.Fill(1);
  myArrow->SetPositionInObjectSpace(pos);
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
// Software Guide : BeginLatex
//
// The length of the arrow in the local coordinate frame is done using the
// \code{SetLengthInObjectSpace()} method. By default the length is set to 1.
// This is the euclidean distance spanned by the arrow's tail from its
// tip (position).
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  myArrow->SetLengthInObjectSpace(2);
// Software Guide : EndCodeSnippet

// Software Guide : BeginLatex
//
// The direction of the arrow can be set using the
// \code{SetDirectionInObjectSpace()} method.
// This is the direction the tail of the arrow extends from the position.
// By default the direction is set along the X axis (first direction).
//
// Software Guide : EndLatex

// Software Guide : BeginCodeSnippet
  ArrowType::VectorType direction;
  direction.Fill(0);
  direction[1] = 1.0;
  myArrow->SetDirectionInObjectSpace(direction);
// Software Guide : EndCodeSnippet

  return EXIT_SUCCESS;
}