Drawing bones

Unity Engine
1

I’ve found the following code for drawing the bones in an armature (performed in late update):

foreach (var B in smRenderer.bones) 
{
            if (B.parent == null)
                continue;

             Debug.DrawLine(B.position, B.parent.position, Color.red);
         
}

This works fine.

Instead of using the bone parent position and the bone position, I’m trying to draw the bone by drawing a line with a start point of parent.position and an endpoint of:
endPoint = parent.position + bone.forward * (bone.position - parent.position).magnitude

It’s not working. Lines drawn are at the correct starting position, of course, but the direction is all wrong. I’ve also tried using bone rotation to no avail.

I guess a more concise way of putting it would be: How is a bone’s ‘position’ (world) property calculated? I assume it’s a function of the parent’s position/rotation and its own localPosition and localRotation (?)

Any ideas? Thank you.

2

Ok. I worked on this a bit more. The correct code for the endpoint is:
endpoint = parent.position + parent.rotation * bone.localPosition;