Three.js: How to select the point of object rotation?

Created on 5 Aug 2011 · 5Comments · Source: mrdoob/three.js

Hello!
I made the model using Blender. If I use mesh.rotation.y - it rotates, but around the one fixed point (axis). If I move the object (mesh.position.x) - it moves, but the rotation axis stay in the same place relative to the object.

How can I select the rotation axis position?

//Sorry for my English. I'm not a native English speaker

Question

Source

savalin

All 5 comments

You can do it this way... say you want the axis position be at ( -100, 0, 0 ):

var dummy = new THREE.Object3D();
var your_object = new THREE.Mesh( geometry, material );
your_object.position.x = 100;
dummy.addChild( your_object );

scene.addObject( dummy );

mrdoob on 5 Aug 2011

👎5 👍1

Thanks! That was very helpful

savalin on 5 Aug 2011

When I try this

var dummy = new THREE.Object3D();
var your_object = new THREE.Mesh( geometry, material );
your_object.position.x = 100;
dummy.addChild( your_object );

scene.addObject( dummy );

It show "Uncaught TypeError: dummy.addChild is not a function at :4:11" this error