Types for applying transformations to visual types
Transformations are applied to child hierarchies and also will also transform mouse and touch input so coordinates in event handlers behave as expected.
Item contains a number of convenience properties, covering the most common types of transformations.
xandy; Translates the item.
scale; Applies a uniform scale factor to the item.
rotation; Applies a counterclockwise rotation of the item.
transformOrigin; Used in conjunction with scale and rotation to change the origin of the transformation.
In addition to the convenience types, it is possible to define more comprehensive transformations using a list of Scale , Rotation ，和 Translate objects to the
transform特性为 Item .
