           baseDimIdx,
                                highPoint[baseDimIdx] - halfWidth, highPoint[otherDimIdx],
                                highPoint[baseDimIdx] + halfWidth, highPoint[otherDimIdx]
                            ),
                            style: style
                        }, {
                            type: 'line',
                            shape: makeShape(
                                baseDimIdx,
                                highPoint[baseDimIdx], highPoint[otherDimId