• drag center self

• rotate axisX axisY self

• scale axisX axisY bboxCorners bboxSides self

• keepRatio axisX axisY bboxCorners bboxSides

• snap.drag 0 40 80

• snapDist.drag 7 20

• snap.rotate 0 20 90

• snapDist.rotate 5 20

• snap.scale 0 80

• snapDist.scale 10 20

• range.rotate -180, 180 -90, 90

• range.scale ∞ 100, 300

• draw bbox circle

• distance 1.3 1.6

• size 5 10

• attrs.fill white black

• callback