geospec

geospec is a geometry specification library designed for ECS-style simulations.
It provides shape definitions, dimension inference, and JSON-friendly representations for physical objects.

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Features

• Define common geometric shapes:

  • Sphere (radius, volume, surface area)
  • Box (length × width × height, volume, surface area)
  • Cylinder (radius × height, volume, surface area)
  • Cone (radius × height, volume, surface area)
  • Pyramid (base × height, volume, surface area)
  • Capsule, Torus, Prism, etc. (planned)

• Infer missing properties:

  • Provide just a radius → auto-compute volume and surface area.
  • Provide dimensions → auto-compute derived measures.

• Serialize/deserialize to JSON using serde_json.

• Optimized for speed: most computations run in nanoseconds.

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Example

use geospec::shapes::Sphere;
use geospec::traits::ShapeSpec;

fn main() {
    let sphere = Sphere { radius: 2.0 };
    let json = sphere.as_json();

    println!("Sphere as JSON: {}", json);
    println!("Volume: {}", sphere.volume());
    println!("Surface area: {}", sphere.surface_area());
}

Output:

Sphere as JSON: {"radius":2.0,"volume":33.510,"surface_area":50.265}
Volume: 33.510
Surface area: 50.265

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Benchmarks

Run with:

cargo bench

Typical performance (on a mid-range CPU):

• Sphere volume: ~1.4 ns
• Sphere surface area: ~1.1 ns
• Box volume: ~0.46 ns
• Box surface area: ~0.44 ns

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License

Dual-licensed under either:

• MIT License
• Apache License 2.0