IRI.Maptor.Sta.Spatial 2.11.0

IRI.Maptor.Sta.Spatial

The core spatial engine of the Maptor library. Provides geometry types, spatial algorithms, advanced data structures, and a wide range of format I/O — all targeting .NET Standard 2.1 with no UI dependencies.

Features

Geometry Types

• Full OGC geometry model: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, GeometryCollection
• Typed generics (Geometry<TPoint>) that carry coordinate system information
• Geometry operations: union, intersection, difference, buffer, simplification

Spatial Analysis

• Delaunay triangulation and Voronoi diagrams
• Computational geometry: convex hull, visibility, polygon decomposition
• Simplification: Douglas-Peucker, Visvalingam-Whyatt
• Digital terrain modeling: contour generation, TIN, slope/aspect
• Interpolation: IDW and other spatial interpolation methods
• Shape characteristics: compactness, shape index metrics
• Area statistics and topology analysis
• Space-filling curves (SFC): Hilbert and Z-order (Morton) curve indexing

Spatial Indexing & Data Structures

• KdTree — k-d tree for nearest-neighbour queries
• RTree — R-tree for range/window queries
• Map indexes — grid-based tile indexing

Format I/O

Installation

dotnet add package IRI.Maptor.Sta.Spatial

Quick Start

using IRI.Maptor.Sta.Common.Primitives;
using IRI.Maptor.Sta.Spatial.Primitives;
using IRI.Maptor.Sta.SpatialReferenceSystem;
using IRI.Maptor.Extensions;

// Create a line between two points
var london   = new Point(51.5074, -0.1278);
var newYork  = new Point(40.7128, -74.0060);
var line = Geometry<Point>.CreatePointOrLineString(new List<Point> { london, newYork }, SridHelper.GeodeticWGS84);

// Measure distance
Console.WriteLine($"Ellipsoidal: {line.GetEllipsoidalLength():N1} km");
Console.WriteLine($"  Spherical: {line.GetSphericalLength():N1} km");

// Export to GeoJSON
Console.WriteLine(line.AsGeoJson().Serialize(indented: true));

Project Structure

Sta.Spatial/
├── Primitives/           # Geometry<T> and base spatial types
├── GeometryOperations/   # Boolean ops, buffering, overlays
├── Analysis/
│   ├── ComputationalGeometry.cs
│   ├── DelaunayTriangulation.cs
│   ├── VoronoiDiagram.cs
│   ├── Simplification/   # Douglas-Peucker, Visvalingam-Whyatt
│   ├── Topology/
│   ├── Interpolation/
│   ├── DigitalTerrainModeling/
│   ├── ShapeCharacteristics/
│   └── SFC/              # Space-filling curve indexing
├── AdvancedStructures/   # KdTree, RTree
├── MapIndexes/           # Tile/grid index helpers
├── IO/
│   ├── GeoJsonFormat/
│   ├── OgcSFA/           # WKT / WKB
│   ├── TopoJson/
│   ├── Dxf/
│   ├── Svg/
│   ├── Eps/
│   ├── GeoTiff/
│   ├── Gpx/
│   ├── Grd/
│   ├── PmTiles/
│   ├── CesiumTerrain/
│   ├── SqlServerNativeBinary/
│   ├── EsriJson/
│   ├── Worldfile/
│   └── Prj/
├── Extensions/           # Extension methods on geometry types
├── Helpers/
├── Models/
├── Dtos/
└── Services/

📦 NuGet: IRI.Maptor.Sta.Spatial

🐞 Issues: GitHub Issues