instance with an inscribed Polygon instance

The following example uses

to compute the symmetric difference of two

instances.

The following example returns a

that represents the symmetric difference

between a

and a.

The following example returns a

instance with an interior

ring that

represents the symmetric difference between the two instances compared.

OGC Methods on Geometry Instances

See Also

STSymDifference()

Polygon

GeometryCollection

CurvePolygon

Polygon

CurvePolygon

Polygon

DECLARE
@g geometry;
DECLARE
@h geometry;
SET
@g = geometry::STGeomFromText(
'POLYGON((0 0, 0 2, 2 2, 2 0, 0 0))'
, 0);
SET
@h = geometry::STGeomFromText(
'POLYGON((1 1, 3 1, 3 3, 1 3, 1 1))'
, 0);
SELECT
@g.STSymDifference(@h).ToString();

DECLARE
@g geometry =
'CURVEPOLYGON (CIRCULARSTRING (0 -4, 4 0, 0 4, -4 0, 0 -4))'
;
DECLARE
@h geometry =
'POLYGON ((1 -1, 5 -1, 5 3, 1 3, 1 -1))'
;
SELECT
@h.STSymDifference(@g).ToString();

DECLARE
@g geometry =
'CURVEPOLYGON (CIRCULARSTRING (0 -4, 4 0, 0 4, -4 0, 0 -4))'
;
DECLARE
@h geometry =
'POLYGON ((1 -1, 2 -1, 2 1, 1 1, 1 -1))'
;
SELECT
@h.STSymDifference(@g).ToString();