Crate egml_core 

Core primitives and operations for processing GML (Geography Markup Language) data.

egml-core implements a subset of ISO 19136 GML 3.2 focused on 3-D geometry. It provides the geometry model, bounding-box computations, triangulation, and distance queries needed to work with GML-based datasets.

Module overview

Module	Contents
model::base	Root GML types: AbstractGml, Id
model::basic	Primitive GML scalar types: Code, Measure
model::feature	Abstract GML feature class
model::geometry	Full geometry hierarchy: primitives, aggregates, and complexes
util::plane	Plane in R³ — point + unit normal
util::triangulate	Earcut-based polygon triangulation

Geometry hierarchy

AbstractGeometry
└── AbstractGeometricPrimitive
    ├── Point
    ├── AbstractCurve  →  LineString
    ├── AbstractSurface  →  Surface, TriangulatedSurface, Polygon, Triangle
    └── AbstractSolid  →  Solid
AbstractGeometricAggregate
    ├── MultiCurve
    └── MultiSurface
CompositeSurface

Quick-start example

use egml_core::model::geometry::DirectPosition;
use egml_core::model::geometry::primitives::{AbstractRing, LinearRing};
use egml_core::model::geometry::Envelope;

let pts = vec![
    DirectPosition::new(0.0, 0.0, 0.0).unwrap(),
    DirectPosition::new(1.0, 0.0, 0.0).unwrap(),
    DirectPosition::new(1.0, 1.0, 0.0).unwrap(),
    DirectPosition::new(0.0, 1.0, 0.0).unwrap(),
];
let ring = LinearRing::new(AbstractRing::default(), pts).unwrap();
let envelope = Envelope::from_points(ring.points()).unwrap();
assert!(envelope.size_x() > 0.0);

Modules

model

GML data model.

util

Internal geometry utilities.

Macros

impl_abstract_solid_traits

Enums

Error

Errors returned by egml-core operations.

Functions

distance