-import jalview.api.RotatableCanvasI;
-import jalview.datamodel.Point;
-import jalview.datamodel.SequenceGroup;
-import jalview.datamodel.SequenceI;
-import jalview.datamodel.SequencePoint;
-import jalview.math.RotatableMatrix;
-import jalview.math.RotatableMatrix.Axis;
-import jalview.util.ColorUtils;
-import jalview.util.MessageManager;
-import jalview.viewmodel.AlignmentViewport;
-