GIS MCP Server

Instructions

Implementation Reference

• src/gis_mcp/shapely_functions.py:299-316 (handler)

  The core handler function implementing the 'rotate_geometry' tool. It takes WKT geometry string, angle, optional origin and use_radians flag, loads the geometry with shapely.wkt, rotates it using shapely.affinity.rotate, and returns the result as WKT in a success dict or raises error.

  @gis_mcp.tool()
  def rotate_geometry(geometry: str, angle: float, origin: str = "center", 
                  use_radians: bool = False) -> Dict[str, Any]:
      """Rotate a geometry."""
      try:
          from shapely import wkt
          from shapely.affinity import rotate
          geom = wkt.loads(geometry)
          result = rotate(geom, angle=angle, origin=origin, use_radians=use_radians)
          return {
              "status": "success",
              "geometry": result.wkt,
              "message": "Geometry rotated successfully"
          }
      except Exception as e:
          logger.error(f"Error rotating geometry: {str(e)}")
          raise ValueError(f"Failed to rotate geometry: {str(e)}")