+/** @param points AutomationLine points to consider. These will correspond 1-to-1 to
+ * points in the AutomationList, but will have been transformed so that they are in pixels;
+ * the x coordinate being the pixel distance from the start of the line (0, or the start
+ * of the AutomationRegionView if we are in one).
+ *
+ * @param skipped Number of points in the AutomationList that were skipped before
+ * `points' starts.
+ */
+