add object dummy to rotate vrm0

src/library/characterManager.js

@@ -7,7 +7,7 @@ import { VRMLoaderPlugin, VRMUtils } from "@pixiv/three-vrm";
 import { getAsArray, disposeVRM, renameVRMBones, addModelData } from "./utils";
 import { downloadGLB, downloadVRMWithAvatar } from "../library/download-utils"
 import { saveVRMCollidersToUserData } from "./load-utils";
-import { cullHiddenMeshes, setTextureToChildMeshes } from "./utils";
+import { cullHiddenMeshes, setTextureToChildMeshes, addChildAtFirst } from "./utils";
 import { LipSync } from "./lipsync";
 import { LookAtManager } from "./lookatManager";
 import { CharacterManifestData } from "./CharacterManifestData";
@@ -994,7 +994,15 @@ export class CharacterManager {
       this._modelBaseSetup(vrm, item, traitID, textures, colors);
 
       // Rotate model 180 degrees
+
+
       if (vrm.meta?.metaVersion === '0'){
+        if (vrm.humanoid.humanBones.hips.node.parent == vrm.scene){
+          const dummyRotate = new THREE.Object3D();
+          dummyRotate.name = "newRootNode";
+          addChildAtFirst(vrm.scene, dummyRotate)
+          dummyRotate.add(vrm.humanoid.humanBones.hips.node);
+        }
         vrm.humanoid.humanBones.hips.node.parent.rotateY(3.14159);
         //VRMUtils.rotateVRM0( vrm );
         console.log("Loaded VRM0 file ", vrm);

src/library/utils.js

@@ -14,6 +14,20 @@ export function getAsArray(target) {
   return Array.isArray(target) ? target : [target]
 }
 
+export function addChildAtFirst(parent, newChild) {
+  // Store the current children of the parent
+  let currentChildren = parent.children.slice();
+
+  // Clear all children from the parent
+  currentChildren.forEach(child => parent.remove(child));
+
+  // Add the new child at the first position
+  parent.add(newChild);
+
+  // Re-add the original children
+  currentChildren.forEach(child => parent.add(child));
+}
+
 export async function setTextureToChildMeshes(scene, url){
   const textureLoader = new THREE.TextureLoader();