QGIS/resources/function_help/json/rotate

{
  "name": "rotate",
  "type": "function",
  "groups": ["GeometryGroup"],
  "description": "Returns a rotated version of a geometry. Calculations are in the Spatial Reference System of this geometry.",
  "arguments": [ {"arg":"geometry","description":"a geometry"},
                 {"arg":"rotation","description":"clockwise rotation in degrees"},
                 {"arg":"center", "optional":true,"description":"rotation center point. If not specified, the center of the geometry's bounding box is used."}
               ],
  "examples": [ { "expression":"rotate($geometry, 45, make_point(4, 5))", "returns":"geometry rotated 45 degrees clockwise around the (4, 5) point"},
{ "expression":"rotate($geometry, 45)", "returns":"geometry rotated 45 degrees clockwise around the center of its bounding box"}]
}