Polygon2d

A Polygon2d represents a closed polygon in 2D, optionally with holes. It is defined by an outer loop of vertices and a list of inner loops defining any holes. This module contains a variety of polygon-related functionality, such as

Computing the perimeter and area of polygons
Scaling, rotating, translating and mirroring polygons
Converting polygons between different coordinate systems
Triangulating polygons

type alias Polygon2d =

Polygon2d

Constructors

singleLoop : List Point2d -> Polygon2d

with :

{ outerLoop : List Point2d

, innerLoops : List (List Point2d)

}

-> Polygon2d

convexHull : List Point2d -> Polygon2d

Properties

outerLoop : Polygon2d -> List Point2d

innerLoops : Polygon2d -> List (List Point2d)

vertices : Polygon2d -> List Point2d

edges : Polygon2d -> List LineSegment2d

perimeter : Polygon2d -> Float

area : Polygon2d -> Float

boundingBox : Polygon2d -> Maybe BoundingBox2d

Transformations

Transforming a polygon is equivalent to transforming each of its vertices.

scaleAbout : Point2d -> Float -> Polygon2d -> Polygon2d

rotateAround : Point2d -> Float -> Polygon2d -> Polygon2d

translateBy : Vector2d -> Polygon2d -> Polygon2d

translateIn : Direction2d -> Float -> Polygon2d -> Polygon2d

mirrorAcross : Axis2d -> Polygon2d -> Polygon2d

Coordinate conversions

relativeTo : Frame2d -> Polygon2d -> Polygon2d

placeIn : Frame2d -> Polygon2d -> Polygon2d

Triangulation

triangulate : Polygon2d -> TriangularMesh Point2d

opensolid/geometry/3.0.1

Polygon2d

Constructors

Properties

Transformations

Coordinate conversions

Triangulation

Modules