svg animate rotate during move - html

Question

I did following demo:
svg{
width: 200px;
height: 200px;
}
body{
position: fixed;
margin: 0;
padding: 0;
width: 100vw;
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
}
<svg viewBox="0 0 400 400" xmlns="http://www.w3.org/2000/svg">
<path id="star" d="M100,10 L122.45,69.1 L185.6,72.19 L136.33,111.8 L152.9,172.81 L100,138.2 L47.1,172.81 L63.67,111.8 L14.4,72.19 L77.55,69.1Z" fill="gray" stroke="lightgreen" stroke-linejoin="round" stroke-linecap="round" stroke-width="15">
<animate xlink:href="#star" attributeName="d" attributeType="XML" begin="0s" dur="2s" repeatCount="1" values="M100,10 L122.45,69.1 L185.6,72.19 L136.33,111.8 L152.9,172.81 L100,138.2 L47.1,172.81 L63.67,111.8 L14.4,72.19 L77.55,69.1Z;M300 210 L322.45 269.1 L385.6 272.19 L336.33 311.8 L352.9 372.81 L300 338.2 L247.1 372.81 L263.67 311.8 L214.4 272.19 L277.55 269.1Z;M100,10 L122.45,69.1 L185.6,72.19 L136.33,111.8 L152.9,172.81 L100,138.2 L47.1,172.81 L63.67,111.8 L14.4,72.19 L77.55,69.1Z"></animate>
<animateTransform xlink:href="#star" attributeName="transform" attributeType="XML" type="rotate" from="0 100 100" to="360 100 100" dur="2s" begin="0s" repeatCount="None" fill="freeze"></animateTransform>
</path>
</svg>
I was expecting that the star to move along a straight line while rotating. however, adding the rotating animation changed the movement path.
I am looking for an svg animate tag solution, instead of a css one
Thanks very much

Answer 1

This is how I would do it: instead of animating the d attribute of the star I would translate the star to the new location with animate In order to make the 2 animations work together I'm using additive="sum" for the second animation.
svg{width:90vh}
<svg viewBox="0 0 500 500" xmlns="http://www.w3.org/2000/svg">
<path id="star" d="M100,10 L122.45,69.1 L185.6,72.19 L136.33,111.8 L152.9,172.81 L100,138.2 L47.1,172.81 L63.67,111.8 L14.4,72.19 L77.55,69.1Z" fill="gray" stroke="lightgreen" stroke-linejoin="round" stroke-linecap="round" stroke-width="15">
<animateTransform attributeName="transform" attributeType="XML" type="translate" to="300 300" dur="2s" begin="0s" repeatCount="1" fill="freeze" ></animateTransform>
<animateTransform attributeName="transform" attributeType="XML" type="rotate" from="0 99.6 91.4" to="360 99.6 91.4" dur="2s" begin="0s" repeatCount="1" fill="freeze" additive="sum"></animateTransform>
</path>
</svg>