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fix: retarget is not performed if rootBone is the only bone to be retargeted (#241)

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* fix: retarget is not performed if rootBone is the only bone to be retargeted

* fix: MeshRetargeter may cause NRE if mesh is null

* fix: MeshRetargeter is not working if sharedMesh is null

* test: add test case for SkinnedMeshRenderer only with rootBone

* test: fix RootBoneOnly test

* test: fix expected and actual

* test: add test for SkinnedMeshRenderer without mesh
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anatawa12 2023-04-09 19:08:57 +09:00 committed by GitHub
parent bd81bafc84
commit 00c683dd23
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3 changed files with 83 additions and 16 deletions
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53
Assets/_ModularAvatar/EditModeTests/RetargetMeshesTest.cs Normal file
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@ -0,0 +1,53 @@
using nadena.dev.modular_avatar.core.editor;
using NUnit.Framework;
using UnityEngine;
using VRC.SDK3.Avatars.Components;
namespace modular_avatar_tests
{
public class RetargetMeshesTest : TestBase
{
// Real world case of this test case is with skinned mesh without bones or skinned mesh renderer with null mesh.
[Test]
public void RootBoneOnly()
{
var root = CreateRoot("root");
var a = CreateChild(root, "a");
var b = CreateChild(a, "b");
var skinnedMeshRenderer = root.AddComponent<SkinnedMeshRenderer>();
skinnedMeshRenderer.sharedMesh = new Mesh();
skinnedMeshRenderer.rootBone = b.transform;
Debug.Assert(skinnedMeshRenderer.bones.Length == 0);
BoneDatabase.AddMergedBone(b.transform);
var context = new BuildContext(root.GetComponent<VRCAvatarDescriptor>());
new RetargetMeshes().OnPreprocessAvatar(root, context);
Assert.AreEqual(a.transform, skinnedMeshRenderer.rootBone);
}
[Test]
public void NoMeshRootBoneOnly()
{
var root = CreateRoot("root");
var a = CreateChild(root, "a");
var b = CreateChild(a, "b");
b.transform.localScale = new Vector3(2, 2, 2);
var skinnedMeshRenderer = root.AddComponent<SkinnedMeshRenderer>();
skinnedMeshRenderer.sharedMesh = null;
skinnedMeshRenderer.localBounds = new Bounds(new Vector3(0, 0, 0), new Vector3(1, 1, 1));
skinnedMeshRenderer.rootBone = b.transform;
Debug.Assert(skinnedMeshRenderer.bones.Length == 0);
BoneDatabase.AddMergedBone(b.transform);
var context = new BuildContext(root.GetComponent<VRCAvatarDescriptor>());
new RetargetMeshes().OnPreprocessAvatar(root, context);
Assert.AreEqual(a.transform, skinnedMeshRenderer.rootBone);
Assert.AreEqual(new Bounds(new Vector3(0, 0, 0), new Vector3(2, 2, 2)),
skinnedMeshRenderer.localBounds);
}
}
}

3
Assets/_ModularAvatar/EditModeTests/RetargetMeshesTest.cs.meta Normal file
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@ -0,0 +1,3 @@
fileFormatVersion: 2
guid: 0c1eeed79228433d8f9ee98d2ae852d1
timeCreated: 1679738453

27
Packages/nadena.dev.modular-avatar/Editor/MeshRetargeter.cs
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@ -24,6 +24,7 @@
using System.Collections.Generic;
using System.Linq;
using JetBrains.Annotations;
using nadena.dev.modular_avatar.editor.ErrorReporting;
using UnityEditor;
using UnityEngine;
@ -88,8 +89,6 @@ namespace nadena.dev.modular_avatar.core.editor
{
BuildReport.ReportingObject(renderer, () =>
{
if (renderer.sharedMesh == null) return;
bool isRetargetable = false;
foreach (var bone in renderer.bones)
{
@ -100,10 +99,12 @@ namespace nadena.dev.modular_avatar.core.editor
}
}
isRetargetable |= BoneDatabase.GetRetargetedBone(renderer.rootBone);
if (isRetargetable)
{
var newMesh = new MeshRetargeter(renderer).Retarget();
_context.SaveAsset(newMesh);
if (newMesh) _context.SaveAsset(newMesh);
}
});
}
@ -143,13 +144,14 @@ namespace nadena.dev.modular_avatar.core.editor
internal class MeshRetargeter
{
private readonly SkinnedMeshRenderer renderer;
private Mesh src, dst;
[CanBeNull] private Mesh src, dst;
public MeshRetargeter(SkinnedMeshRenderer renderer)
{
this.renderer = renderer;
}
[CanBeNull]
public Mesh Retarget()
{
var avatar = RuntimeUtil.FindAvatarInParents(renderer.transform);
@ -165,8 +167,11 @@ namespace nadena.dev.modular_avatar.core.editor
avatarTransform.localScale = Vector3.one;
src = renderer.sharedMesh;
if (src != null)
{
dst = Mesh.Instantiate(src);
dst.name = "RETARGETED: " + src.name;
}
RetargetBones();
AdjustShapeKeys();
@ -185,23 +190,26 @@ namespace nadena.dev.modular_avatar.core.editor
private void RetargetBones()
{
var originalBindPoses = src.bindposes;
var originalBindPoses = src ? src.bindposes : null;
var originalBones = renderer.bones;
var newBones = (Transform[]) originalBones.Clone();
var newBindPoses = (Matrix4x4[]) originalBindPoses.Clone();
var newBindPoses = (Matrix4x4[]) originalBindPoses?.Clone();
for (int i = 0; i < originalBones.Length; i++)
{
Transform newBindTarget = BoneDatabase.GetRetargetedBone(originalBones[i]);
if (newBindTarget == null) continue;
newBones[i] = newBindTarget;
if (originalBindPoses != null)
{
Matrix4x4 Bp = newBindTarget.worldToLocalMatrix * originalBones[i].localToWorldMatrix *
originalBindPoses[i];
newBones[i] = newBindTarget;
newBindPoses[i] = Bp;
}
}
var rootBone = renderer.rootBone;
var scaleBone = rootBone;
@ -212,9 +220,12 @@ namespace nadena.dev.modular_avatar.core.editor
scaleBone = renderer.bones[0];
}
dst.bindposes = newBindPoses;
renderer.bones = newBones;
if (dst)
{
dst.bindposes = newBindPoses;
renderer.sharedMesh = dst;
}
var newRootBone = BoneDatabase.GetRetargetedBone(rootBone, true);
var newScaleBone = BoneDatabase.GetRetargetedBone(scaleBone, true);