2.0 first commit

src/drawing/two-point-drawing.ts

@@ -0,0 +1,39 @@
+import { Point } from './data-source';
+import { DrawingOptions, defaultOptions } from './options';
+import { Drawing } from './drawing';
+import { TwoPointDrawingPaneView } from './pane-view';
+
+
+export abstract class TwoPointDrawing extends Drawing {
+	_p1: Point;
+	_p2: Point;
+	_paneViews: TwoPointDrawingPaneView[] = [];
+
+	constructor(
+		p1: Point,
+		p2: Point,
+		options?: Partial<DrawingOptions>
+	) {
+		super()
+		this._p1 = p1;
+		this._p2 = p2;
+		this._options = {
+			...defaultOptions,
+			...options,
+		};
+	}
+
+	setFirstPoint(point: Point) {
+		this.updatePoints(point);
+	}
+
+	setSecondPoint(point: Point) {
+		this.updatePoints(null, point);
+	}
+
+	public updatePoints(...points: (Point|null)[]) {
+		this._p1 = points[0] || this._p1;
+		this._p2 = points[1] || this._p2;
+		this.requestUpdate();
+	}
+}