Functional Quadtrees
7 days ago
- #Quadtree
- #Functional Programming
- #Clojure
- Introduction to functional Quadtrees in Clojure for browser-based applications.
- Quadtrees provide variable detail levels based on proximity to a focus point (e.g., mouse position).
- Demo showcases real-time visualization with higher resolution near the focus and lower resolution further away.
- Recursive approach to building Quadtrees: check node size relative to camera distance, split if too close.
- Data model includes node bounds, center, and width for easy distance calculations.
- Use of Clojure's postwalk and prewalk for tree traversal and manipulation.
- Visualization leverages canvas API and Clojurescript for real-time updates.
- Color consistency achieved via 32-bit hashing of node centers.
- Pure functional solution demonstrated, avoiding mutable state with atoms.
- Applications include VR rendering optimization and other resource-sensitive scenarios.
- Shadow-cljs praised for efficient JS compilation and development tooling.
- Full source code available on GitHub for further exploration.