FastRiverPainter is a Unity plugin specifically designed for the efficient creation of river systems.

Departing from the conventional spline mesh river approach, it introduces a unique method

centered around painting a mask map. This departure is motivated by the need to optimize

performance on mobile platforms, where excessive grid data can have a significant impact.

One of the plugin's key innovations is its ability to handle elongated rivers effectively. Unlike

traditional methods that may yield poor effects in areas without grid data, FastRiverPainter's mask map approach proves to be a thoughtful and efficient solution.

A notable feature of the plugin is the real-time preview displays of flow directions, simplifying the artistic editing process. Additionally, FastRiverPainter supports drawing on objects with varying

heights, providing an effective solution for connecting flow directions while minimizing grid data usage.

In summary, FastRiverPainter not only addresses the performance challenges associated with mesh data on mobile platforms but also introduces a user-friendly approach to river creation with its real-time previews and support for varying object heights.