import { quat } from 'gl-matrix' ; import { SkeletalNode } from '../../skeletalnode' ; /**
 * An M3 node.
 */ export default class M3Node extends SkeletalNode { override convertBasis ( rotation ) { const halfPI = Math . PI / 2 ; quat . rotateZ ( rotation , rotation , halfPI ) ; quat . rotateY ( rotation , rotation , - halfPI ) ; } }