$ show open-navigation/opennav_coverage
Open Navigation's Nav2 Complete Coverage is a ROS 2 application providing complete coverage path planning for agricultural and field operations. It integrates the Fields2Cover library with Nav2's behavior tree framework to compute optimal coverage paths from field polygons or pre-defined rows. The system consists of modular packages: coverage servers for open fields and row-based scenarios, message definitions, behavior tree nodes, a BT Navigator plugin, and demonstration tools. Key architectural features include a polymorphic route planner abstraction that unifies different routing algorithms, sophisticated coordinate transformation utilities, and lifecycle-compliant action servers that expose coverage planning as Nav2-compatible tasks. The application handles headland removal, field decomposition, swath generation, route ordering, and path generation with extensive configurability through action goals and dynamic parameters.
The LLM identified 3 files worth highlighting for reuse:
Contains self-contained utility functions for coordinate transformations between F2C and ROS frames, path message conversions, and path component iteration. Demonstrates sophisticated handling of coordinate system conversions and path discretization that could be reused in any robotics path planning project.
Implements a polymorphic abstraction layer that unifies F2C's two unrelated route planners (swath orderers and TSP planner) behind a common interface. Includes sophisticated multi-cell route stitching logic that handles border graphs between cells. This design pattern could be extracted for use in other routing systems needing to support multiple algorithms.
Contains utilities for parsing agricultural row data from GML files and transforming coordinates between different reference frames. Specifically handles the complexity of row orientation consistency and coordinate system conversions needed for row-based coverage planning.