Custom properties in existing classes

Some generically named properties like speed and rotating and paused etc. don’t really belong directly in existing classes IMO. I’d like a .custom property (a simple hash) that I can assign such properties to. Not in extensions of existing classes, but in their objects:

var block = new THREE.Mesh(geo, material);
block.custom.speed = 1; // instead of block.speed = 1

block.speed is not very safe, forward compatibility wise, especially with the lib being in dev.

Assigning my own .custom to the prototype won’t work however, because then all objects share 1 custom hash:

THREE.Object3D.prototype.custom = {};

It’s a feature request, but very simple: add this.custom = {}; to the Object3D constructor.

[mrdoob]

To be honest, I don’t yet understand what you wanted. But if you think this issue is closed, then it’s closed 😃

[mrdoob]

But… couldn’t you do that on the application level? Sometimes I add my custom data to objects on my apps just like this:

var block = new THREE.Mesh(geo, material);
block.custom = { speed: 1 };