Support Object3D.lookAt( x, y, z )

[WestLangley]

... as discussed in #12101.

[mrdoob]

Thanks!

[mrdoob]

Actually, I'm reconsidering this...

I think this is more clear:

object.lookAt( x, y, z );
object.lookAtVector( v );
object.lookAtObject( o );

object.lookAt() will now have to throw a warning because now it expects x, y, z instead of v.

[mrdoob]

Before @pailhead gets upset... Yes, that's what he suggested in #12101 (comment) 😉

[WestLangley]

Actually, I'm reconsidering this...

I hope you decide not to. I think it is better if lookAt() just works.

LookAtObject() is not well-defined. The geometry can be offset from the origin.

[pailhead]

:D

[mrdoob]

LookAtObject() is not well-defined. The geometry can be offset from the origin.

Good point...

[pailhead]

I think the alternative would be in tune more with JavaScript, than a graphics library. A super experienced JavaScript person might expect lookAtVector, without knowing much about linear algebra or graphics. A 3D artist that's trying some coding would expect the overloaded function. I'm totally 50:50 on this. It would be so nice if we had some sort of analytics with how people use threejs :)