message: adapt to mesh integrator
diff: -#ifndef VOXBLOX_CORE_IO_SDF_PLY_H_
  -#define VOXBLOX_CORE_IO_SDF_PLY_H_
  +#ifndef VOXBLOX_IO_SDF_PLY_H_
  +#define VOXBLOX_IO_SDF_PLY_H_
  #include <algorithm>
  #include <string>
  @@ -130,8 +130,7 @@ bool outputLayerAsPly(const Layer<VoxelType>& layer,
  case PlyOutputTypes::kSdfIsosurface: {
  typename MeshIntegrator<VoxelType>::Config mesh_config;
  MeshLayer::Ptr mesh(new MeshLayer(layer.block_size()));
  - MeshIntegrator<VoxelType> mesh_integrator(mesh_config, &layer,
  - mesh.get());
  + MeshIntegrator<VoxelType> mesh_integrator(mesh_config, layer, mesh.get());
  constexpr bool only_mesh_updated_blocks = false;
  constexpr bool clear_updated_flag = false;
  @@ -151,4 +150,4 @@ bool outputLayerAsPly(const Layer<VoxelType>& layer,
  } // namespace voxblox
  -#endif // VOXBLOX_CORE_IO_SDF_PLY_H_
  +#endif // VOXBLOX_IO_SDF_PLY_H_
  