Jsartoolkit5 model centering method

Model to Marker size

let width = source_image_width;
let height = source_image_height;
let dpi = source_image_dpi;

// CONVERT PIXEL TO MM
let w = width / dpi * 2.54 * 10;
let h = height / dpi * 2.54 * 10;

// SCALE OBJECT
var box = new THREE.Box3().setFromObject( model );
var size = new THREE.Vector3();
box.getSize( size );
let scaleVecX = (w/size.x);
model.scale.setScalar(scaleVecX + (scaleVecX * 0.2));

// SET MODEL ORIGIN AS BOX CENTER
var box2 = new THREE.Box3().setFromObject( model );

let boxCenter = new THREE.Vector3();
box2.getCenter(boxCenter);

let dist = new THREE.Vector3((w/2) - boxCenter.x, (h/2) - boxCenter.y);

// SET POSITION
model.position.x += dist.x;
model.position.y += dist.y;