three.js 辅助线添加,参考线，坐标轴

直接在官网上能搜出来

var size = 10000;
var divisions = 10;

var gridHelper = new THREE.GridHelper( size, divisions );
scene.add( gridHelper );

size -- 坐标格尺寸. 默认为 10.
divisions -- 坐标格细分次数. 默认为 10

var axesHelper = new THREE.AxesHelper( 11115);
scene.add( axesHelper );

x,y,z三个坐标显示 

11115 坐标长度


模型本身的坐标添加

 loader.load( ‘./3d/banana.obj‘, function ( obj ) {
                let object = obj;
                
                object.scale.set(3,3,3);
                object.children[0].material.color.set(0xe8b73b);
                object.rotation.x = 1;
                object.rotation.y = 0.3;
                scene.add(object);

                var axesHelper2 = new THREE.AxesHelper( 113);
                axesHelper2.position.copy(object.position);
                scene.add( axesHelper2 );
            });