Simple full code example

Questions
6

I’ve tried it, it’s not that difficult.
But it took me a while because I tried much more complicated things, as I often do. :slightly_frowning_face:

I’ve updated the example.

The girl jumped from the higher box, turned around and went to her starting position.

2020-04-22 14.39.12
2020-04-22 14.39.12853×373 27.1 KB

The input data is fixed in code.

// --- data input ---
const yRotation = 3.21; 
const xPosition = -1.5;	 
const zPosition = 3.1;

…

function process( gltf ) {	
		
	const box = new THREE.Box3( ).setFromObject( gltf.scene );		 
	const boxHelper = new THREE.Box3Helper( box, 0xffff00 );
        scene.add( boxHelper );
	
	const c = box.getCenter( new THREE.Vector3( ) );
	const size = box.getSize( new THREE.Vector3( ) );
	
	gltf.scene.rotation.set( 0, yRotation, 0 );
	
	// rotate center
	const cz = c.z * Math.cos( yRotation ) - c.x * Math.sin( yRotation );
	const cx = c.z * Math.sin( yRotation ) + c.x * Math.cos( yRotation );
	
	gltf.scene.position.set( xPosition - cx, size.y / 2 - c.y, zPosition - cz );
	
	scene.add( gltf.scene ); 

}

:slightly_smiling_face:There How to rotate a gltf model in a specific direction - #18 by Heyam is the last UPDATE.