From a2ce57ade32e2f3de5f4c3b275ec26e973e2ed59 Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@curious-creature.com>
Date: Sat, 13 Jun 2020 14:47:14 -0700
Subject: [PATCH] Fir applyAnimation() when scale is close or equal to 0

---
 libs/gltfio/src/math.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libs/gltfio/src/math.h b/libs/gltfio/src/math.h
index 2f5beed281..caa4782431 100644
--- a/libs/gltfio/src/math.h
+++ b/libs/gltfio/src/math.h
@@ -75,10 +75,12 @@ inline void decomposeMatrix(const filament::math::mat4f& mat, filament::math::fl
         clone[0] /= s.x;
         clone[1] /= s.y;
         clone[2] /= s.z;
+        // Extract rotation
+        *rotation = clone.toQuaternion();
+    } else {
+        // Set to identity if close to zero
+        *rotation = quatf(1);
     }
-
-    // Extract rotation.
-    *rotation = clone.toQuaternion();
 }
 
 inline filament::math::mat4f composeMatrix(const filament::math::float3& translation,