- Primitives: The renderer must support, at a minimum, the following geometric primitives:
- Markers (with custom icons)
- Polylines (with customizable width and color)
- Polygons (with customizable stroke and fill)
- Circles
- Styling: A comprehensive styling system that can be applied to any primitive. This should be consistent across all data source types.
- Layer Management:
- Ability to add and remove data layers from the map.
- Each layer is a distinct collection of primitives.
- Ability to show/hide layers.
- Decoupling: The rendering engine must be completely decoupled from the data parsing logic. The renderer should not know whether the data came from a KML, GeoJson, or any other format.
- Data Sources: The system will initially support KML and GeoJSON.
- Collection Handling: The renderer must efficiently handle large collections of items to be rendered.
- Performance: The renderer must be optimized for performance to prevent UI lag, even with substantial datasets.
- Extensibility: The architecture must be modular to easily accommodate new data formats (e.g., WKT) and new rendering features in the future.
- Testability: All components (renderer, parsers, mappers) must be designed to be independently testable.
- API Clarity: The public-facing API for the renderer must be intuitive and well-documented for developers.