TransformableElement specification

This is the engineering specification for the TransformableElement abstract type.

Overview

A transformable element has independent rotation, scale, and translation properties.

MVP

Expose a TransformableElement abstract type

public protocol TransformableElement

Expose reactive properties

All properties should be constant.

protocol TransformableElement {
  let position: ReactiveProperty<Point>
  let rotation: ReactiveProperty<Number>
  let scale: ReactiveProperty<Number>
  let transform: ReactiveProperty<Transform>
}