spade

Delaunay triangulations for the rust ecosystem.

• 2D Delaunay triangulation, optionally backed by a hierarchy structure for improved nearest neighbor and insertion performance.
• Allows both incremental and bulk loading creation of triangulations
• Support for vertex removal
• 2D constrained Delaunay triangulation (CDT)
• Delaunay refinement
• Uses precise geometric predicates to prevent incorrect geometries due to rounding issues
• Supports extracting the Voronoi diagram
• Natural neighbor interpolation

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Project goals

Project goals, in the order of their importance:

1. Robustness - all data structures should behave correctly. An incorrect result, even if triggered only under rare circumstances, is not acceptable. This is why Spade uses a precise calculation kernel by default.
2. Easy to use - favor an easy-to-use API over an API that exposes all bells and whistles.
3. Performance - Delaunay triangulations are often a low level component of an application. Optimization in this area pays off greatly.
4. Small footprint - Spade should be a sensible library to include in your project that doesn't require too many dependencies. Bigger dependencies will be feature gated when possible.

Roadmap

For Spade 3:

• Possibly API simplification by un-supporting non-f64 outputs.

Performance and comparison to other crates

Refer to the delaunay_compare readme for some benchmarks and a comparison with other crates.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.