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TSC Meeting Notes March 12, 2024
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Minutes from OpenVDB TSC meeting, March 12th, 2024 | ||
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Attendees: *Ken* M., *Jeff* L., *Andre* P, *Dan* B., *Greg* H., *Richard* J. | ||
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Additional Attendees: Ivo (Autodesk), John Mertic (Linux Foundation), Dhruv Govil (Apple) | ||
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Regrets: *Nick* A. | ||
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Agenda: | ||
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1) Confirm quorum | ||
2) Secretary | ||
3) Moving to Apache 2.0 License | ||
4) PR-1760 | ||
5) Half-Grid Support Presentation by Greg | ||
6) Next meeting | ||
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------------ | ||
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1) Confirm quorum | ||
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Quorum is present. | ||
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2) Secretary | ||
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Secretary is Andre Pradhana. | ||
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3) Moving to Apache 2.0 License | ||
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We decided to try to move from Mozilla Public License to Apache 2. | ||
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The key part of the process is that you cannot change the entire license until | ||
every contributor is on board. | ||
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The reason we are moving to Apache 2 are: (1) many other ASWF projects are using | ||
it, (2) it protects the project from patents disputes. The disadvantages of MPL | ||
are: (1) any contributor can pull out their contributor and (2) the difficulty to | ||
reliable proof that what is in the system comes from a particular source code. | ||
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Ken will share a google doc with a summary on why we are moving to Apache 2.0. | ||
We will use this draft to communicate to contributors to sign their approval for | ||
moving to Apache 2.0. | ||
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John Mertic will contact DreamWorks to inform them of this decision and to | ||
follow through with the proces. | ||
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It is noted that what we need are contributors after the year 2018, since the | ||
previous contributors are covered by DreamWorks. | ||
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4) PR-1760 | ||
Dan talks about Initial Adaptive Grid Prototype (PR-1760). | ||
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Dan tried to use the Point Advection class and go through the interpolation | ||
through a different type of Grid. To make it work, Dan needs to modify the use of | ||
Value Accessor, which was designed for Sparse Grid. He changed it to use an | ||
Accessor from the Tree class itself. Essentially, this is pushing the creation of | ||
an Accessor down into the Tree. | ||
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All the unit tests pass. | ||
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Dan asks for people to look at the PR and to provide feedback. He will try to | ||
fix the Windows build problem. He suggests that we notify AutoDesk of this PR. | ||
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5) Half-Grid Support Presentation by Greg | ||
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Greg extended the support of HalfGrid to other tools, such as | ||
CreateLevelSetSphere, FastSweeping, LevelSetFilter, LevelSetMeasure, | ||
LevelSetMorph, LevelSetSphere, LevelSetTracker, LevelSetUtil, MeshToVolume, | ||
RayIntersector, RayTracer, SignedFloodFill. He experiments with LevelSetFilter. | ||
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We discuss ValueType and ComputeType, which is similar to StoreType and | ||
ReturnType. | ||
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6) Next meeting | ||
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Next meeting is on March 19th, 2024. 2pm-3pm EST (GMT-5). |