physics.api.velocity

[IRobot1]

How do I get the current velocity?

There only appears to be methods to set, copy and subscribe.

Also, what's the difference between set and copy?

[IRobot1]

I'm trying to use the velocity of one physics object (motion controller), to set the velocity of another physics object (which I just released).

Essentially, throw the object I was holding by using the velocity of my hand to set the velocity of the ball as its released.

[nartc]

set and copy do the exact same thing, just with a slightly different API. I'm not entirely sure about the velocity stuff :(

[IRobot1]

It can be done, but is not obvious. Subscribe to velocity of physics object that's moving

  private velocity_subscription?: () => void;
  velocity = [0, 0, 0] as NgtTriplet;
  handphysics!: NgtPhysicBox; // initialize first
  boxphysics!: NgtPhysicBox; // initial too

  this.velocity_subscription = this.handphysics.api.velocity.subscribe(next => {
    this.velocity = next;
   });
  //... when finished, unsubscribe
  this.velocity_subscription?.();

When object is released, set the velocity to match the velocity being monitored

this.boxphysics.api.velocity.set(this.velocity[0], this.velocity[1], this.velocity[2])

You might need to use a PointToPoint constraint to connect the objects. See the code for mousepick example