Spin the mergeometry object around its center in Three.js

I've been struggling to figure out how to rotate the object at its center. Right now, I can rotate the scene but the object moves away from the user. I've tried looking at similar questions on forums, but haven't been able to make it work. Below is a snippet of the HTML/Three.js file I'm using. Any assistance would be greatly appreciated.

            <script src="../build/three.min.js"></script>
            <script src="js/controls/TrackballControls.js"></script>
            <script src="js/libs/stats.min.js"></script>

            <script>
                    // Code removed for brevity

Can anyone offer some guidance?

javascriptthree.js

Answer №1

To ensure that the center of your objects geometry is at position (0,0,0) and remains in place while rotating, you can set it to center using the following method:

geometry.center();
var drawnObject = new THREE.Mesh( geometry, defaultMaterial );
scene.add( drawnObject );

Update:

If you are looking to rotate the camera around your geometry's center rather than just centering the geometry itself, you may need to take a different approach. Calculate the bounding sphere of your geometry and adjust the controls target accordingly:

drawnObject.geometry.computeBoundingSphere();
controls.target = drawnObject.geometry.boundingSphere.center;

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