diff --git a/Project.toml b/Project.toml
index 7d3903dc..c76db4a2 100644
--- a/Project.toml
+++ b/Project.toml
@@ -5,17 +5,17 @@ version = "0.5.10"
 
 [deps]
 EarCut_jll = "5ae413db-bbd1-5e63-b57d-d24a61df00f5"
-Extents = "411431e0-e8b7-467b-b5e0-f676ba4f2910"
-IterTools = "c8e1da08-722c-5040-9ed9-7db0dc04731e"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 
 [weakdeps]
+Extents = "411431e0-e8b7-467b-b5e0-f676ba4f2910"
 GeoInterface = "cf35fbd7-0cd7-5166-be24-54bfbe79505f"
 
 [extensions]
+ExtentsExt = "Extents"
 GeometryBasicsGeoInterfaceExt = "GeoInterface"
 
 [compat]
@@ -24,7 +24,6 @@ EarCut_jll = "2"
 Extents = "0.1"
 GeoInterface = "1.0.1"
 GeoJSON = "0.7, 0.8"
-IterTools = "1.3.0"
 LinearAlgebra = "<0.0.1,1"
 OffsetArrays = "1"
 PrecompileTools = "1.0"
@@ -35,6 +34,7 @@ julia = "1.10"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+Extents = "411431e0-e8b7-467b-b5e0-f676ba4f2910"
 GeoJSON = "61d90e0f-e114-555e-ac52-39dfb47a3ef9"
 GeoInterface = "cf35fbd7-0cd7-5166-be24-54bfbe79505f"
 OffsetArrays = "6fe1bfb0-de20-5000-8ca7-80f57d26f881"
@@ -42,4 +42,4 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua", "GeoInterface", "GeoJSON", "OffsetArrays", "Random", "Test"]
+test = ["Aqua", "Extents", "GeoInterface", "GeoJSON", "OffsetArrays", "Random", "Test"]
diff --git a/ext/ExtentsExt.jl b/ext/ExtentsExt.jl
new file mode 100644
index 00000000..a151054c
--- /dev/null
+++ b/ext/ExtentsExt.jl
@@ -0,0 +1,16 @@
+module ExtentsExt
+
+import GeometryBasics
+import Extents
+
+function Extents.extent(rect::GeometryBasics.Rect2)
+    (xmin, ymin), (xmax, ymax) = extrema(rect)
+    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax))
+end
+
+function Extents.extent(rect::GeometryBasics.Rect3)
+    (xmin, ymin, zmin), (xmax, ymax, zmax) = extrema(rect)
+    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax), Z=(zmin, zmax))
+end
+
+end
diff --git a/src/GeometryBasics.jl b/src/GeometryBasics.jl
index d01865ae..39f015f2 100644
--- a/src/GeometryBasics.jl
+++ b/src/GeometryBasics.jl
@@ -1,7 +1,6 @@
 module GeometryBasics
 
-using IterTools, LinearAlgebra, StaticArrays
-import Extents
+using LinearAlgebra, StaticArrays
 using EarCut_jll
 import Base: *
 
diff --git a/src/primitives/rectangles.jl b/src/primitives/rectangles.jl
index 912161a4..fa51a216 100644
--- a/src/primitives/rectangles.jl
+++ b/src/primitives/rectangles.jl
@@ -582,12 +582,3 @@ function faces(::Rect3)
         (3, 4, 8, 7), (1, 3, 7, 5), (6, 8, 4, 2)
     ]
 end
-
-function Extents.extent(rect::Rect2)
-    (xmin, ymin), (xmax, ymax) = extrema(rect)
-    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax))
-end
-function Extents.extent(rect::Rect3)
-    (xmin, ymin, zmin), (xmax, ymax, zmax) = extrema(rect)
-    return Extents.Extent(X=(xmin, xmax), Y=(ymin, ymax), Z=(zmin, zmax))
-end
diff --git a/src/primitives/spheres.jl b/src/primitives/spheres.jl
index c29c6d4e..f4fff7e4 100644
--- a/src/primitives/spheres.jl
+++ b/src/primitives/spheres.jl
@@ -67,7 +67,7 @@ end
 
 function texturecoordinates(::Sphere, nvertices=24)
     ux = LinRange(0, 1, nvertices)
-    return ivec(((φ, θ) for θ in reverse(ux), φ in ux))
+    return ((φ, θ) for φ in ux for θ in reverse(ux))
 end
 
 function faces(::Sphere, nvertices=24)