Can you explain the function of the "staticMoving" property in TrackballControls?

I was exploring the library module known as THREE.TrackballControls when I came across an interesting property within an instance of the module called staticMoving. This property appears to be connected to another property called dynamicDampingFactor. However, I couldn't find any detailed documentation on them and examining the source code didn't provide much clarity.

Are there any insights into what these properties represent or how they function?

Answer №1

By toggling the staticMoving property of your THREE.TrackballControls to true, you essentially disable damping. On the other hand, setting it to false enables damping, allowing you to control the amount of damping effect with the dynamicDamingFactor. If you set a very small value, such as 0.02, for the dynamic damping factor, you will immediately see the impact of this adjustment:

controls.staticMoving = false;
controls.dynamicDampingFactor = 0.02;

Witness the damping effect in action in this interactive demonstration.

In the provided fiddle, changing controls.staticMoving = true; will result in the damping effect being disabled.


This damping effect can also be observed in other controls like THREE.OrbitControls, where the corresponding properties are named enableDamping and dampingFactor. While these names may be more intuitive, the underlying effect remains consistent. It's unfortunate that the API for these controls doesn't align perfectly, likely due to their status as "code examples" rather than integral components of the three.js framework.

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