Three js Mesh


### Edge Position
```typeobject.updateMatrixWorld()const geometry = object.geometryconst positionAttribute = geometry.getAttribute( 'position' )const vertex = new THREE.Vector3().fromBufferAttribute( positionAttribute, index )object.localToWorld( vertex )```

### Box
```typeconst geometry = new THREE.BoxGeometry( 1, 1, 1 );const material = new THREE.MeshBasicMaterial( {color: 0x00ff00} );const cube = new THREE.Mesh( geometry, material );scene.add( cube );```


### show inside
```type// opacity effectmesh.material.side = THREE.DoubleSide;// low effectmesh.material.side = THREE.BackSide;```


> [Untitled](https://stackoverflow.com/questions/19825061/three-js-seeing-geometry-when-inside-mesh)




