Interface IDrawer

src/drawers/drawer.ts:15–39

 * Drawers draw data onto an output of some sort, usually a DOM element.
 */
export interface IDrawer {
  /**
   * Mutate the surface to reflect the data being passed in. This method is responsible
   * for calling the animators at the right time and order.
   * @param data The data to be drawn.
   * @param drawSteps The draw steps that the data go through.
   */
  draw(data: any[], drawSteps: AppliedDrawStep[]): void;

  /**
   * Get the the last drawn visual primitives.
   */
  getVisualPrimitives(): Element[];

  /**
   * Get the visual primitive for the given *data* index.
   */
  getVisualPrimitiveAtIndex(index: number): Element;

  /**
   * Called when the Drawer is no longer needed - implementors may use this to cleanup
   * any resources they've created
   */
  remove(): void;
}

/**
 * A Drawer is a stateful class that holds one SVGDrawer and one CanvasDrawer, and can switch between