From e75fe4294314fe47118fe11e4c1a7e41e9cc3d56 Mon Sep 17 00:00:00 2001
From: Alexander Bock <alexander.bock@liu.se>
Date: Fri, 16 Apr 2021 12:49:44 +0200
Subject: [PATCH] Enable support for single double radius in
 SizeReferenceTileProvider (closes #1562)

---
 .../moon/layers/overlays/size_reference.asset     | 15 +++++++++++++++
 modules/globebrowsing/src/tileprovider.cpp        |  4 ++++
 2 files changed, 19 insertions(+)
 create mode 100644 data/assets/scene/solarsystem/planets/earth/moon/layers/overlays/size_reference.asset

diff --git a/data/assets/scene/solarsystem/planets/earth/moon/layers/overlays/size_reference.asset b/data/assets/scene/solarsystem/planets/earth/moon/layers/overlays/size_reference.asset
new file mode 100644
index 0000000000..030be3572d
--- /dev/null
+++ b/data/assets/scene/solarsystem/planets/earth/moon/layers/overlays/size_reference.asset
@@ -0,0 +1,15 @@
+local moonAsset = asset.require("./../../moon").Moon
+local globeIdentifier = moonAsset.Identifier
+
+local layer ={
+    Identifier = "Size_Reference",
+    Name = "Size Reference",
+    Type = "SizeReferenceTileLayer",
+    Radii = moonAsset.Renderable.Radii
+}
+
+asset.onInitialize(function () 
+    openspace.globebrowsing.addLayer(globeIdentifier, "Overlays", layer)
+end)
+
+asset.export("layer", layer)
diff --git a/modules/globebrowsing/src/tileprovider.cpp b/modules/globebrowsing/src/tileprovider.cpp
index 379857325d..ddf1200ed9 100644
--- a/modules/globebrowsing/src/tileprovider.cpp
+++ b/modules/globebrowsing/src/tileprovider.cpp
@@ -657,6 +657,10 @@ SizeReferenceTileProvider::SizeReferenceTileProvider(const ghoul::Dictionary& di
     if (dictionary.hasValue<glm::dvec3>(sizereferenceprovider::KeyRadii)) {
         ellipsoid = dictionary.value<glm::dvec3>(sizereferenceprovider::KeyRadii);
     }
+    else if (dictionary.hasValue<double>(sizereferenceprovider::KeyRadii)) {
+        const double r = dictionary.value<double>(sizereferenceprovider::KeyRadii);
+        ellipsoid = glm::dvec3(r, r, r);
+    }
 }