wehub-resource-sync
73 lines
2.0 KiB
Markdown
73 lines
2.0 KiB
Markdown
---
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title: Migrating from 0.15 to 0.16
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order: 994
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---
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## `timeless` replaced by `static`
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The concept of _timeless_ data has been replaced by _static_ data.
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Except for the name change, they behave similarly in most use cases.
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Static data is data that shows up at all times, on all timelines.
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In 0.15, you could log component data to the same entity path using both timeless and temporal data, and the resulting component data would end up being the concatenation of the two.
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0.16 introduces static data, which has a far simpler model: if you log static component data to an entity path, it unconditionally overrides any other data (whether static or temporal) for that component.
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Once static data has been logged, it can only be overwritten by other static data.
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Static data is most often used for `AnnotationContext` and `ViewCoordinates`.
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#### C++
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```diff
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- rec.log_timeless("world", rerun::ViewCoordinates::RIGHT_HAND_Z_UP);
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+ rec.log_static("world", rerun::ViewCoordinates::RIGHT_HAND_Z_UP);
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```
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#### Python
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```diff
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- rr.log("world", rr.ViewCoordinates.RIGHT_HAND_Z_UP, timeless=True)
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+ rr.log("world", rr.ViewCoordinates.RIGHT_HAND_Z_UP, static=True)
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```
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#### Rust
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```diff
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- rec.log_timeless("world", &rerun::ViewCoordinates::RIGHT_HAND_Z_UP)?;
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+ rec.log_static("world", &rerun::ViewCoordinates::RIGHT_HAND_Z_UP)?;
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```
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## `MeshProperties` replaced by `TriangleIndices`
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In PR [#6169](https://github.com/rerun-io/rerun/pull/6169) we replaced `MeshProperties` with `TriangleIndices`. We could do this thanks to simplifications in our data model.
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#### C++
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```diff
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rerun::Mesh3D(positions)
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- .with_mesh_properties(rerun::components::MeshProperties::from_triangle_indices({{2, 1, 0}}))
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+ .with_triangle_indices({{2, 1, 0}})
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```
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#### Python
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```diff
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rr.Mesh3D(
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vertex_positions=…,
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- indices=[2, 1, 0],
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+ triangle_indices=[2, 1, 0],
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),
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```
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#### Rust
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```diff
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rerun::Mesh3D::new(positions)
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- .with_mesh_properties(rerun::MeshProperties::from_triangle_indices([[2, 1, 0]]))
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+ .with_triangle_indices([[2, 1, 0]])
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```
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