     segmentOrientation: go.Orientation.Along,
                        stroke: 'white'
                      })
                    ),
                  new go.Shape({
                    stroke: 'red',
                    strokeWidth: 4,
                    isGeometryPositioned: true,
                    ...sliderActions(true)
                  })
                    .bind('geometry', 'value', (v, shp) => {
                      var scale = shp.part.findObject('SCALE');
                      var pt = scale