test_mesh_io.cpp

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#include <cstdio>
#include <string>

#include <pcl/test/gtest.h>

#include <pcl/geometry/triangle_mesh.h>
#include <pcl/geometry/mesh_io.h>

////////////////////////////////////////////////////////////////////////////////

using MeshTraits = pcl::geometry::DefaultMeshTraits<>;
using Mesh = pcl::geometry::TriangleMesh<MeshTraits>;
using MeshIO = pcl::geometry::MeshIO<Mesh>;

using VertexIndex = Mesh::VertexIndex;
using HalfEdgeIndex = Mesh::HalfEdgeIndex;
using FaceIndex = Mesh::FaceIndex;

////////////////////////////////////////////////////////////////////////////////

TEST (TestMeshIO, WriteAndRead)
{
  Mesh expected_mesh, loaded_mesh;

  Mesh::VertexIndices vi;
  for (unsigned int i=0; i<11; ++i)
  {
    vi.push_back (expected_mesh.addVertex ());
  }

  // No triangles 1-3-4 and 6-9-7!
  // 0 - 1 - 2  //
  //  \ / \ /   //
  //   3 - 4    //
  //    \ /     //
  //     5      //
  //    / \     //
  //   6 - 7    //
  //  / \ / \   //
  // 8 - 9 - 10 //
  ASSERT_TRUE (expected_mesh.addFace (vi [0], vi [3], vi [ 1]).isValid ());
  ASSERT_TRUE (expected_mesh.addFace (vi [1], vi [4], vi [ 2]).isValid ());
  ASSERT_TRUE (expected_mesh.addFace (vi [3], vi [5], vi [ 4]).isValid ());
  ASSERT_TRUE (expected_mesh.addFace (vi [6], vi [8], vi [ 0]).isValid ());
  ASSERT_TRUE (expected_mesh.addFace (vi [7], vi [9], vi [10]).isValid ());
  ASSERT_TRUE (expected_mesh.addFace (vi [5], vi [6], vi [ 7]).isValid ());

  // 'PCL_TEST_GEOMETRY_BINARY_DIR' defined in CMakeLists.txt
  std::string filename = std::string (PCL_TEST_GEOMETRY_BINARY_DIR).append ("/test_mesh_io_mesh_tmp.txt");
  MeshIO io;

  ASSERT_TRUE (io.write (filename, expected_mesh));
  ASSERT_TRUE (io.read  (filename, loaded_mesh));

  ASSERT_TRUE (expected_mesh.isEqualTopology (loaded_mesh));

  // TODO: no test for the mesh data yet.

  std::remove (filename.c_str ());
}

////////////////////////////////////////////////////////////////////////////////

int
main (int argc, char** argv)
{
  testing::InitGoogleTest (&argc, argv);
  return (RUN_ALL_TESTS ());
}