CROSSES
Syntax
Crosses(g1,g2)
Description
Returns 1
if g1
spatially crosses g2
. Returns NULL
if g1
is
a Polygon or a MultiPolygon, or if g2
is a
Point or a MultiPoint. Otherwise, returns 0
.
The term spatially crosses denotes a spatial relation between two given geometries that has the following properties:
- The two geometries intersect
- Their intersection results in a geometry that has a dimension that is one less than the maximum dimension of the two given geometries
- Their intersection is not equal to either of the two given geometries
CROSSES() is based on the original MySQL implementation, and uses object bounding rectangles, while ST_CROSSES() uses object shapes.
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