Class BorderCurveExtractor

Namespace: Map.Rendering

Assembly: MapAssembly.dll

Extracts smooth border curves from bitmap province boundaries Uses AdjacencySystem to process only known neighbor pairs (efficient) Pre-computes all curves at map load for zero-cost runtime updates

Architecture: Static Geometry + Dynamic Appearance Pattern

Geometry (curves) computed once and cached
Appearance (colors, thickness) updated at runtime via flags

REFACTORED: Now uses specialized helper classes for single responsibility

BorderPolylineSimplifier: RDP simplification, Chaikin smoothing, tessellation
BorderGeometryUtils: Geometric utilities (intersection, angles, distances)
BorderChainMerger: Chain merging with U-turn detection
JunctionDetector: Junction detection and endpoint snapping
MedianFilterProcessor: Median filtering and pixel chaining

public class BorderCurveExtractor

Inheritance: object

BorderCurveExtractor

Constructors

BorderCurveExtractor(MapTextureManager, AdjacencySystem, ProvinceSystem, ProvinceMapping)

public BorderCurveExtractor(MapTextureManager textures, AdjacencySystem adjacency, ProvinceSystem provinces, ProvinceMapping mapping)

Parameters

textures MapTextureManager
adjacency AdjacencySystem
provinces ProvinceSystem
mapping ProvinceMapping

Methods

ExtractAllBorders()

Extract and smooth all province borders using Chaikin algorithm Returns dictionary of border polylines: (provinceA, provinceB) -> smooth polyline points

public Dictionary<(ushort, ushort), List<Vector2>> ExtractAllBorders()

Returns

Dictionary<(ushort, ushort), List<Vector2>>