How can I make an Object3D in Three.js look towards the near side of the view frustum instead of a point or rendering like a sprite

Just beginning my journey into 3D programming here.

Experimenting with three.js and Spine to bring 2D characters to life in a 3D environment.

Specifically, looking to render Mesh as Sprite - meaning objects maintain a parallel view rather than always facing the camera using lookAt() function.

I've noticed that Spine has SkeletonMesh, which is essentially inherited by Mesh, giving the appearance of 3D objects even with only one face.

Any suggestions for a straightforward approach? Or perhaps some insight on a mathematical method?

Appreciate any guidance or advice from experienced developers out there!

javascript3dthree.jsspine

Answer №1

To make an object face the camera while looking in a direction parallel to the camera's look direction, you can follow this technique:

object.quaternion.copy( camera.quaternion );

Instead of directly assigning the quaternion, it is recommended to copy it in each frame of the animation loop or whenever the camera changes orientation.

This method serves as an alternative to using

object.lookAt( camera.position );

Utilized in three.js version r.84

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