--- /dev/null
+package jalview.api;
+
+import jalview.datamodel.SequencePoint;
+
+import java.util.Vector;
+
+/**
+ * interface implemented by RotatatableCanvas GUI elements (such as point clouds and simple structure views)
+ * @author jimp
+ *
+ */
+public interface RotatableCanvasI
+{
+
+ void setPoints(Vector<SequencePoint> points, int rows);
+
+}