From 7d15c0bb04267c64dda5490c3f962ee18842ca56 Mon Sep 17 00:00:00 2001
From: ousttrue <ousttrue@gmail.com>
Date: Thu, 8 Apr 2021 17:27:09 +0900
Subject: [PATCH] ExportLookAt

---
 Assets/VRM10/Runtime/IO/Vrm10Exporter.cs | 33 +++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
index 4447de46a..40d784734 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
@@ -221,13 +221,44 @@ namespace UniVRM10
             if (vrmController != null)
             {
                 ExportExpression(vrm, vrmController, model, converter);
-                // lookAt
+                ExportLookAt(vrm, vrmController);
                 // firstPerson
             }
 
             return (vrm, thumbnailTextureIndex);
         }
 
+        UniGLTF.Extensions.VRMC_vrm.LookAtRangeMap ExportLookAtRangeMap(CurveMapper mapper)
+        {
+            return new UniGLTF.Extensions.VRMC_vrm.LookAtRangeMap
+            {
+                InputMaxValue = mapper.CurveXRangeDegree,
+                OutputScale = mapper.CurveYRangeDegree,
+            };
+        }
+
+        void ExportLookAt(UniGLTF.Extensions.VRMC_vrm.VRMC_vrm vrm, VRM10Controller vrmController)
+        {
+            if (vrmController?.LookAt != null)
+            {
+                return;
+            }
+
+            vrm.LookAt = new UniGLTF.Extensions.VRMC_vrm.LookAt
+            {
+                LookAtType = vrmController.LookAt.LookAtType,
+                OffsetFromHeadBone = new float[]{
+                    vrmController.LookAt.OffsetFromHead.x ,
+                    vrmController.LookAt.OffsetFromHead.y ,
+                    vrmController.LookAt.OffsetFromHead.z ,
+                },
+                LookAtHorizontalInner = ExportLookAtRangeMap(vrmController.LookAt.HorizontalInner),
+                LookAtHorizontalOuter = ExportLookAtRangeMap(vrmController.LookAt.HorizontalOuter),
+                LookAtVerticalDown = ExportLookAtRangeMap(vrmController.LookAt.VerticalDown),
+                LookAtVerticalUp = ExportLookAtRangeMap(vrmController.LookAt.VerticalUp),
+            };
+        }
+
         UniGLTF.Extensions.VRMC_vrm.MorphTargetBind ExportMorphTargetBinding(MorphTargetBinding binding, Func<string, int> getIndex)
         {
             return new UniGLTF.Extensions.VRMC_vrm.MorphTargetBind