openvdb | OpenVDB - Sparse volume data structure and tools | Computer Vision library

by AcademySoftwareFoundation C++ Version: v10.0.1 License: MPL-2.0

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | openvdb Summary

openvdb is a C++ library typically used in Artificial Intelligence, Computer Vision, Deep Learning applications. openvdb has no bugs, it has no vulnerabilities, it has a Weak Copyleft License and it has medium support. You can download it from GitHub.

Website | Discussion Forum | Documentation. OpenVDB is an open source C++ library comprising a novel hierarchical data structure and a large suite of tools for the efficient storage and manipulation of sparse volumetric data discretized on three-dimensional grids. It was developed by DreamWorks Animation for use in volumetric applications typically encountered in feature film production.

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Support

openvdb has a medium active ecosystem.

It has 2091 star(s) with 554 fork(s). There are 147 watchers for this library.

It had no major release in the last 12 months.

There are 95 open issues and 241 have been closed. On average issues are closed in 155 days. There are 24 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of openvdb is v10.0.1

Quality

openvdb has 0 bugs and 0 code smells.

Security

openvdb has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

openvdb code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

openvdb is licensed under the MPL-2.0 License. This license is Weak Copyleft.

Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

Reuse

openvdb releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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openvdb Key Features

No Key Features are available at this moment for openvdb.

openvdb Examples and Code Snippets

No Code Snippets are available at this moment for openvdb.

Community Discussions

Trending Discussions on openvdb

`ld` undefined reference error, but libraries are linked to by CMake and symbols exist

How to downsample grid in OpenVDB

Cannot find function implementation in the code

Would sign be lost: zeroing out the low-order bits

How to keep track of source code call stack

QUESTION

`ld` undefined reference error, but libraries are linked to by CMake and symbols exist

Asked 2022-Feb-24 at 13:51

I have a CMake file like this:

...

ANSWER

Answered 2022-Feb-24 at 13:51

Fix 🔧

The cause of the linker errors was this statement:

Source https://stackoverflow.com/questions/71233059

QUESTION

How to downsample grid in OpenVDB

Asked 2021-May-12 at 11:43

Is there any good way to downsample voxels grid in OpenVDB?

For example I have grid 8x8x8 with voxel size - 1.0, and I want to get grid 4x4x4 with voxel size - 2.0: each voxel of new grid is some interpolation of original voxels, e. g. [0,0,0] voxel of new grid is average value of [0,0,0]-[1,1,1] (8 voxels) of original grid)

P.S. There is way to do it manually but I bet openvdb has its own implementation

...

ANSWER

Answered 2021-May-12 at 11:43

The thing I was looking for is resampleToMatch

Source https://stackoverflow.com/questions/67502680

QUESTION

Cannot find function implementation in the code

Asked 2020-Aug-25 at 07:20

In OpenVDB C++ repository, there is this condition inside VolumeToMesh.h:

...

ANSWER

Answered 2020-Aug-25 at 07:20

As pointed out by @molbdnilo it is a template not a single function and all the input parameters passed to the template satisfy interfaces/traits needed by template.

Source https://stackoverflow.com/questions/63573317

QUESTION

Would sign be lost: zeroing out the low-order bits

Asked 2020-Jul-10 at 07:02

I have a Coord class like this:

...

ANSWER

Answered 2020-Jul-10 at 06:54

In hexadecimal DIM is 00001000, DIM-1 is 00000FFF, and ~(DIM-1) is FFFFF000. Then the & operation preserves all bits that are set in ~(DIM-1) and zeroes all bits that are clear in ~(DIM-1). So the lower 12 bits are zeroed and the upper 20 bits are preserved. Since the sign bit is the highest bit it is preserved.

Technically however this is undefined behaviour when used on a negative number. In that case the result of origin[0] & ~(DIM - 1) is a large unsigned quantity which overflows when assigned to mVec[0] which is a signed quantity. Not really a problem in the real world though.

Source https://stackoverflow.com/questions/62828177

QUESTION

How to keep track of source code call stack

Asked 2020-Jul-06 at 22:17

I'm trying to re-implement a C++ code in Go. Specifically, I'm focused on meshToVolume tool of OpenVDB library.

As shown by a manually-prepared code flow screenshot, even a rough call stack map is pretty perplexing.

I'm looking for a tool to help me keep track of call stack and the code flow. So far:

I've looked at this post and tried out BOUML, but it didn't help
Also, OpenVDB has a Doxygen, but I couldn't get much help regarding keeping track of code flow and call stack

Can anybody suggest a helpful tool/method?

...

ANSWER

Answered 2020-Jul-06 at 22:17

Using Doxygen, I could finally visualize call graph!

Approach

Downloaded and installed Doxygen. Then ran Doxywizard i.e. Doxygen GUI front-end. OpenVDB has a doc directory which is set as the working directory from which Doxygen will run.

Without selecting these options, call graphs didn't get generated for me:

I have Graphviz DOT language installed on my machine. There I can use it to generate call graphs:

Finally, Doxygen generates the output HTML accessible at:

file:///C:/Users/m3/repos/doxygen-output/html/index.html

Dependency graph sample:

Source https://stackoverflow.com/questions/62738410

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install openvdb

The following provides basic installation examples for the core OpenVDB library. Other components, such as the python module, OpenVDB AX, NanoVDB and various executables, may require additional dependencies. See the build documentation for help with installations. Note that the following commands have only been tested for 64bit systems/libraries. It is recommended to set the VCPKG_DEFAULT_TRIPLET environment variable to x64-windows to use 64-bit libraries by default. You will also require Git, vcpkg and CMake to be installed.