The point of rotation will stay anchored while you rotate the object or text. Just imagine what it would be like if you had to rotate an object or a text in your artwork but there was no anchor point.

It is not a trick. Instead, this is an example of the angular momentum principle. If you want to try this yourself, I guess you are going to have to find some type of wheel.

So, although the person is moving in a straight line the angular momentum (about that rotation point) is constant. The total angular momentum of the person-merry go round system is constant.

For example, imagine catching a ball. When the ball is moving, it has momentum. You have to exert a force with your hand to stop the ball (and bring its momentum down to zero).

The easiest is to simply type in the rotation angle below. Alternatively, create two paths labelled ‘from’ and ‘to’ with just two points each and include them in the KML file.