An example visualizing an analog clock with hour, minute and seconds hands using Rerun Arrow3D primitives. ## Used Rerun types [`Boxes3D`](https://www.rerun.io/docs/reference/types/archetypes/boxes3d), [`Points3D`](https://www.rerun.io/docs/reference/types/archetypes/points3d), [`Arrows3D`](https://www.rerun.io/docs/reference/types/archetypes/arrows3d) ## Logging and visualizing with Rerun The visualizations in this example were created with the following Rerun code: The clock's frame is logged as a 3D box using [`Boxes3D`](https://www.rerun.io/docs/reference/types/archetypes/boxes3d) archetype. ```python rr.log( "world/frame", rr.Boxes3D(half_sizes=[LENGTH_S, LENGTH_S, 1.0], centers=[0.0, 0.0, 0.0]), static=True, ) ``` Then, the positions and colors of points and arrows representing the hands of a clock for seconds, minutes, and hours are logged in each simulation time. It first sets the simulation time using [`timelines`](https://www.rerun.io/docs/concepts/logging-and-ingestion/timelines), calculates the data for each hand, and logs it using [`Points3D`](https://www.rerun.io/docs/reference/types/archetypes/points3d) and [`Arrows3D`](https://www.rerun.io/docs/reference/types/archetypes/arrows3d) archetypes. This enables the visualization of the clock's movement over time. ```python for step in range(steps): rr.set_time("sim_time", duration=t_secs) # … calculating seconds … rr.log("world/seconds_pt", rr.Points3D(positions=point_s, colors=color_s)) rr.log("world/seconds_hand", rr.Arrows3D(vectors=point_s, colors=color_s, radii=WIDTH_S)) # … calculating minutes … rr.log("world/minutes_pt", rr.Points3D(positions=point_m, colors=color_m)) rr.log("world/minutes_hand", rr.Arrows3D(vectors=point_m, colors=color_m, radii=WIDTH_M)) # … calculating hours … rr.log("world/hours_pt", rr.Points3D(positions=point_h, colors=color_h)) rr.log("world/hours_hand", rr.Arrows3D(vectors=point_h, colors=color_h, radii=WIDTH_H)) ``` ## Run the code To run this example, make sure you have the Rerun repository checked out and the latest SDK installed: ```bash pip install --upgrade rerun-sdk # install the latest Rerun SDK git clone git@github.com:rerun-io/rerun.git # Clone the repository cd rerun git checkout latest # Check out the commit matching the latest SDK release ``` Install the necessary libraries specified in the requirements file: ```bash pip install -e examples/python/clock ``` To experiment with the provided example, simply execute the main Python script: ```bash python -m clock # run the example ``` If you wish to customize it, explore additional features, or save it use the CLI with the `--help` option for guidance: ```bash python -m clock --help ```