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OpenVDB Introducing a new command line tool, dubbed vdb_tool, that can combine any number of the high-level tools available in openvdb tools Many other bug fixes, new features, and improvements
OpenVDB - Download They can be viewed with the vdb_view command-line tool included in the distribution or with the Houdini or Maya toolkits The original polygonal meshes for several of these models are available from NASA 3D Resources and the Stanford 3D Scanning Repository
OpenVDB - About OpenVDB is an Academy Award-winning C++ library comprising a hierarchical data structure and a suite of tools for the efficient manipulation of sparse, time-varying, volumetric data discretized on three-dimensional grids It is based on VDB, which was developed by Ken Museth at DreamWorks Animation, and it offers an effectively infinite 3D index space, compact storage, fast data access, and a
OpenVDB: Frequently Asked Questions The technical details of VDB are described in the paper "VDB: High-Resolution Sparse Volumes with Dynamic Topology" What license is OpenVDB distributed under? OpenVDB is released under the Apache License Version 2 0, which is a free, open source software license developed and maintained by the Apache Software Foundation
OpenVDB - Documentation Adoption in Houdini Related publications Data structure K Museth, “VDB: High-Resolution Sparse Volumes with Dynamic Topology”, ACM Transactions on Graphics 32 (3), 2013 Presented at SIGGRAPH 2013 K Museth, “DB+Grid: A Novel Dynamic Blocked Grid for Sparse High-Resolution Volumes and Level Sets”, ACM SIGGRAPH 2011 Talks
OpenVDB Overview Note that the naming scheme for methods that return “begin” iterators closely mirrors that of the iterators themselves That is, Grid::cbeginValueOn returns a const iterator to the first of a grid’s active values, whereas LeafNode::beginValueAll returns a non- const iterator to the first of a leaf node’s values, both active and inactive (const overloads of begin * methods are usually
OpenVDB: OpenVDB Cookbook This section provides code snippets and some complete programs that illustrate how to use OpenVDB and how to perform common tasks Contents “Hello, World” for OpenVDB Creating and writing a grid Populating a grid with values Reading and modifying a grid Stream I O Handling metadata Adding metadata Retrieving metadata Removing metadata Iteration Node Iterator Leaf Node Iterator Value
OpenVDB: Building OpenVDB Blosc produces significantly smaller vdb files If Blosc is disabled, you will not be able to read or use any vdb files that were created using blosc compression This includes OpenVDB files from Houdini See the note in the known issues list regarding supported versions of blosc ZLIB Support ZLIB is an optional dependency of all OpenVDB
Release Notes - OpenVDB Added a -shuffle option that causes vdb_test to run unit tests in random order, which can help to identify unintended dependencies between tests Added vdb_lod, a command-line tool to generate volume mipmaps for level-of-detail effects Added methods to compute the median value of active, inactive or all voxels in leaf nodes Improvements: