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# Source tree structure {#NanoVDB_SourceTree}
#### Overview of the directory tree of NanoVDB.
* [NanoVDB.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/NanoVDB.h) C++11 implementation of the core data structure and its access methods.
* [CNanoVDB.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/CNanoVDB.h) Incomplete but useable C99 implementation of the core data structure and its access methods. Designed in particular for use in OpenCL kernels. Note that this relies on zero-sized arrays for the _reserved padding, so will not work on all compilers (with MSVC being a particular example)
* [PNanoVDB.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/PNanoVDB.h) C99 implementation of the core data structure and its access methods. More complete coverage than CNanoVDB. This version is pointer-less and supports virtually all graphics APIs.
* [util/GridHandle.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/GridHandle.h) defines a handler for the memory allocated to a NanoVDB grid.
* [util/IO.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/IO.h) implements I/O support.
* [util/OpenToNanoVDB.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/OpenToNanoVDB.h) defines the converter from OpenVDB to NanoVDB and obviously depends on the OpenVDB library (as the only header file).
* [Ray.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/Ray.h) Ray class.
* [HDDA.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/HDDA.h) HDDA related.
* [SampleFromVoxels.h](https://github.com/AcademySoftwareFoundation/openvdb/blob/master/nanovdb/nanovdb/util/SampleFromVoxels.h) interpolation.
```bash
foo@bar:~$ tree
.
└── nanovdb
├── CMakeLists.txt
├── cmd
│ ├── CMakeLists.txt
│ ├── convert
│ │ └── nanovdb_convert.cc
│ ├── print
│ │ └── nanovdb_print.cc
│ └── validate
│ └── nanovdb_validate.cc
├── CNanoVDB.h
├── docs
│ ├── CMakeLists.txt
│ ├── codingstyle.txt
│ └── doxygen-config
├── examples
│ ├── benchmark
│ │ ├── BenchKernels_dense.cu
│ │ ├── BenchKernels_nano.cu
│ │ ├── Benchmark.cc
│ │ ├── Benchmark_dense.cc
│ │ ├── Benchmark_nano.cc
│ │ ├── Camera.h
│ │ ├── CMakeLists.txt
│ │ ├── DenseGrid.h
│ │ └── Image.h
│ ├── CMakeLists.txt
│ ├── ex_bump_pool_buffer
│ │ └── bump_pool_buffer.cc
│ ├── ex_collide_level_set
│ │ ├── common.h
│ │ ├── main.cc
│ │ ├── nanovdb.cu
│ │ └── openvdb.cc
│ ├── ex_index_grid_cuda
│ │ ├── index_grid_cuda.cc
│ │ └── index_grid_cuda.cu
│ ├── ex_make_custom_nanovdb
│ │ └── make_custom_nanovdb.cc
│ ├── ex_make_funny_nanovdb
│ │ └── make_funny_nanovdb.cc
│ ├── ex_make_nanovdb_sphere
│ │ └── make_nanovdb_sphere.cc
│ ├── ex_make_typed_grids
│ │ └── make_typed_grids.cc
│ ├── ex_map_pool_buffer
│ │ └── map_pool_buffer.cc
│ ├── ex_modify_nanovdb_thrust
│ │ └── modify_nanovdb_thrust.cu
│ ├── ex_nodemanager_cuda
│ │ ├── nodemanager_cuda.cc
│ │ └── nodemanager_cuda.cu
│ ├── ex_openvdb_to_nanovdb
│ │ └── openvdb_to_nanovdb.cc
│ ├── ex_openvdb_to_nanovdb_accessor
│ │ └── openvdb_to_nanovdb_accessor.cc
│ ├── ex_openvdb_to_nanovdb_cuda
│ │ ├── openvdb_to_nanovdb_cuda.cc
│ │ └── openvdb_to_nanovdb_cuda.cu
│ ├── ex_raytrace_fog_volume
│ │ ├── common.h
│ │ ├── main.cc
│ │ ├── nanovdb.cu
│ │ └── openvdb.cc
│ ├── ex_raytrace_level_set
│ │ ├── common.h
│ │ ├── main.cc
│ │ ├── nanovdb.cu
│ │ └── openvdb.cc
│ ├── ex_read_nanovdb_sphere
│ │ └── read_nanovdb_sphere.cc
│ ├── ex_read_nanovdb_sphere_accessor
│ │ └── read_nanovdb_sphere_accessor.cc
│ ├── ex_read_nanovdb_sphere_accessor_cuda
│ │ ├── read_nanovdb_sphere_accessor_cuda.cc
│ │ └── read_nanovdb_sphere_accessor_cuda.cu
│ ├── ex_util
│ │ ├── ComputePrimitives.h
│ │ └── CpuTimer.h
│ ├── ex_vox_to_nanovdb
│ │ ├── vox_to_nanovdb.cc
│ │ └── VoxToNanoVDB.h
│ └── ex_write_nanovdb_grids
│ └── write_nanovdb_grids.cc
├── NanoVDB.h
├── PNanoVDB.h
├── Readme.md
├── unittest
│ ├── CMakeLists.txt
│ ├── pnanovdb_validate_strides.h
│ ├── TestNanoVDB.cc
│ └── TestOpenVDB.cc
└── util
├── CSampleFromVoxels.h
├── CudaDeviceBuffer.h
├── DitherLUT.h
├── ForEach.h
├── GridBuilder.h
├── GridChecksum.h
├── GridHandle.h
├── GridStats.h
├── GridValidator.h
├── HDDA.h
├── HostBuffer.h
├── IndexGridBuilder.h
├── Invoke.h
├── IO.h
├── NanoToOpenVDB.h
├── NodeManager.h
├── OpenToNanoVDB.h
├── Primitives.h
├── Range.h
├── Ray.h
├── Reduce.h
├── SampleFromVoxels.h
└── Stencils.h
```
|
