Add Extents.extent method for Rect2

This has been pirated in Tyler and should rather live in GeometryBasics.

Project.toml

@@ -5,6 +5,7 @@ version = "0.4.7"
 
 [deps]
 EarCut_jll = "5ae413db-bbd1-5e63-b57d-d24a61df00f5"
+Extents = "411431e0-e8b7-467b-b5e0-f676ba4f2910"
 GeoInterface = "cf35fbd7-0cd7-5166-be24-54bfbe79505f"
 IterTools = "c8e1da08-722c-5040-9ed9-7db0dc04731e"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -14,6 +15,7 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 
 [compat]
 EarCut_jll = "2"
+Extents = "0.1"
 GeoInterface = "1.0.1"
 IterTools = "1.3.0"
 StaticArrays = "0.12, 1.0"

src/GeometryBasics.jl

@@ -2,6 +2,7 @@ module GeometryBasics
 
 using StaticArrays, Tables, StructArrays, IterTools, LinearAlgebra
 using GeoInterface
+import Extents
 using EarCut_jll
 
 using Base: @propagate_inbounds

src/geointerface.jl

@@ -149,3 +149,8 @@ function GeoInterface.convert(::Type{MultiPolygon}, type::MultiPolygonTrait, geo
  t = PolygonTrait()
  return MultiPolygon(map(poly -> GeoInterface.convert(Polygon, t, poly), getgeom(geom)))
 end
+
+function Extents.extent(rect::Rect2)
+ (xmin, ymin), (xmax, ymax) = extrema(rect)
+ return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax))
+end

test/geointerface.jl

@@ -115,3 +115,10 @@ end
  @test length(multipolygon_hole_gb[1].interiors) == 0
  @test length(multipolygon_hole_gb[2].interiors) == 1
 end
+
+@testset "Extent" begin
+ rect = Rect2f(Vec2f(0), Vec2f(1.0))
+ ext = extent(rect)
+ @test ext.X == (0.0f0, 1.0f0)
+ @test ext.Y == (0.0f0, 1.0f0)
+end

test/runtests.jl

@@ -4,6 +4,7 @@ using LinearAlgebra
 using GeometryBasics: attributes
 using GeoInterface
 using GeoJSON
+using Extents
 
 @testset "GeometryBasics" begin