wehub-resource-sync
63 lines
2.0 KiB
Python
Executable File
63 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Showcases how to incrementally log data belonging to the same archetype, and re-use some or all of it across frames."""
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from __future__ import annotations
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import argparse
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from numpy.random import default_rng
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import rerun as rr
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parser = argparse.ArgumentParser(description="Showcases how to incrementally log data belonging to the same archetype.")
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rr.script_add_args(parser)
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args = parser.parse_args()
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README = """\
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# Incremental Logging
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This example showcases how to incrementally log data belonging to the same archetype, and re-use some or all of it across frames.
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It was logged with the following code:
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```python
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# Only log colors and radii once.
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# Logging as static would also work (i.e. `static=True`).
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rr.set_time("frame_nr", sequence=0)
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rr.log("points", rr.Points3D.from_fields(colors=0xFF0000FF, radii=0.1))
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rng = default_rng(12345)
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# Then log only the points themselves each frame.
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#
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# They will automatically re-use the colors and radii logged at the beginning.
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for i in range(10):
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rr.set_time("frame_nr", sequence=i)
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rr.log("points", rr.Points3D.from_fields(positions=rng.uniform(-5, 5, size=[10, 3])))
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```
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Move the time cursor around, and notice how the colors and radii from frame 0 are still picked up by later frames, while the points themselves keep changing every frame.
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"""
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# ---
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rr.script_setup(args, "rerun_example_incremental_logging")
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rr.log("readme", rr.TextDocument(README, media_type=rr.MediaType.MARKDOWN), static=True)
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# Only log colors and radii once.
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# Logging as static would also work (i.e. `static=True`).
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rr.set_time("frame_nr", sequence=0)
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rr.log("points", rr.Points3D.from_fields(colors=0xFF0000FF, radii=0.1))
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rng = default_rng(12345)
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# Then log only the points themselves each frame.
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#
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# They will automatically re-use the colors and radii logged at the beginning.
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for i in range(10):
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rr.set_time("frame_nr", sequence=i)
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rr.log("points", rr.Points3D.from_fields(positions=rng.uniform(-5, 5, size=[10, 3])))
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rr.script_teardown(args)
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