springBones

import { Vrm } from "@hmcs/sdk";

vrm.springBones() returns all spring bone chains for this character. Spring bones simulate physics on hair, clothing, and accessories.

const { chains } = await character.springBones();
for (const chain of chains) {
  console.log(`Chain ${chain.entity}: ${chain.joints.length} joints`);
  console.log(`  Stiffness: ${chain.props.stiffness}`);
  console.log(`  Drag: ${chain.props.dragForce}`);
}

Returns a SpringBoneChainsResponse containing an array of SpringBoneChain objects. Use the entity ID of each chain to query or modify individual chains with springBone and setSpringBone.