Rotation UI directives

These directives are a series of traits that control rotation in a user interface XML block. Those traits won't work if element has children.

• Rotateangle - sets the rotation degree of an element, in radians.
• Rotateaxisx - determines the rotation X axis, relative to X coordinate of an element.
• Rotateaxisy - determines the rotation Y axis, relative to Y coordinate of an element.

Example

 <rotateangle> 1.570796 </rotateangle> 

Pi/2 rotation.

 <Rotateaxisx>
	<copy src="me()" trait="width"/>
	<div> 2 </div>
 </Rotateaxisx> 

Sets X axis rotation to the X center of the element.