ones that should be draggable
                let draggableBoneNames = [
                    "back-leg-ik-target",
                    "front-leg-ik-target",
                    "back-arm-ik-target",
                    "front-arm-ik-target",
                    "hip",
                    "neck2"
                ];
                for (let boneName of draggableBoneNames) {
                    let bone = this.skeleton.findBone(boneName);
                    if (bone == null) throw Error("Couldn't find bone "