Get rotations of object in Physics simulations

Questions
1

When I have a sphere in Physics animation. The ball changes position and also rotates. In SceneExplorer I see a change in position, but I do not see a change in rotation. How do I get the X, Y, Z axis of rotation of a simulated object? What code should I use for mentioned task? Thanks for your time.

2

When using a physics engine, a quaternion is instead used for orientation. So the .rotationQuaternion property holds the orientation.

3

I tried it but the result did not come. A simple line of code down. One object should rotate like the other object. The result of this code is nothing. The object does not rotate according to its template.

object1.rotationQuaternion = object2.rotationQuaternion;

I don’t know how to get changes in the rotation of a body that is in motion simulation thanks to a Physics simulation.

4

are you looking for the angular velocity? Or are you trying to copy the rotation?

5

copy the rotation.

6

before you spin up the physics imposter on it go ahead and do
nodeA.rotationQuaternion = BABYLON.Quaternion. RotationYawPitchRoll(nodeA.position.x, nodeA.position.y, nodeA.position.z)

Then initialize the imposter.

Afterwards do an observable for afterPhysics or beforeRender or what have you and have it do clone the quat there, should work.

nodeA.rotationQuaternion = nodeB.rotationQuaternion.clone()

See if that works, it should.

2 Likes
7

Yeah, it looks that it really works, thanks!