Functions for locating points within basic geometric structures such as lines and rings.
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#include <PointLocation.h>
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| static bool | isOnSegment (const geom::CoordinateXY &p, const geom::CoordinateXY &p0, const geom::CoordinateXY &p1) |
| | Tests whether a point lies on a line segment. More...
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| static bool | isOnLine (const geom::CoordinateXY &p, const geom::CoordinateSequence *line) |
| | Tests whether a point lies on the line defined by a CoordinateSequence. More...
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| static bool | isInRing (const geom::CoordinateXY &p, const std::vector< const geom::Coordinate * > &ring) |
| | Tests whether a point lies inside or on a ring. More...
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static bool | isInRing (const geom::CoordinateXY &p, const geom::CoordinateSequence *ring) |
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| static geom::Location | locateInRing (const geom::CoordinateXY &p, const std::vector< const geom::Coordinate * > &ring) |
| | Determines whether a point lies in the interior, on the boundary, or in the exterior of a ring. The ring may be oriented in either direction. More...
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static geom::Location | locateInRing (const geom::CoordinateXY &p, const geom::CoordinateSequence &ring) |
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static geom::Location | locateInRing (const geom::CoordinateXY &p, const geom::Curve &ring) |
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Functions for locating points within basic geometric structures such as lines and rings.
- Author
- Martin Davis
◆ isInRing()
| static bool geos::algorithm::PointLocation::isInRing |
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const geom::CoordinateXY & |
p, |
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const std::vector< const geom::Coordinate * > & |
ring |
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Tests whether a point lies inside or on a ring.
The ring may be oriented in either direction. A point lying exactly on the ring boundary is considered to be inside the ring.
This method does not first check the point against the envelope of the ring.
- Parameters
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| p | point to check for ring inclusion |
| ring | an array of coordinates representing the ring (which must have first point identical to last point) |
- Returns
true if p is inside ring
- See also
- RayCrossingCounter::locatePointInRing()
◆ isOnLine()
| static bool geos::algorithm::PointLocation::isOnLine |
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const geom::CoordinateXY & |
p, |
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const geom::CoordinateSequence * |
line |
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Tests whether a point lies on the line defined by a CoordinateSequence.
- Parameters
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| p | the point to test |
| line | the line coordinates |
- Returns
- true if the point is a vertex of the line or lies in the interior of a line segment in the line
◆ isOnSegment()
| static bool geos::algorithm::PointLocation::isOnSegment |
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const geom::CoordinateXY & |
p, |
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const geom::CoordinateXY & |
p0, |
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const geom::CoordinateXY & |
p1 |
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Tests whether a point lies on a line segment.
- Parameters
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| p | the point to test |
| p0 | a point of the line segment |
| p1 | a point of the line segment |
- Returns
- true if the point lies on the line segment
◆ locateInRing()
| static geom::Location geos::algorithm::PointLocation::locateInRing |
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const geom::CoordinateXY & |
p, |
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const std::vector< const geom::Coordinate * > & |
ring |
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Determines whether a point lies in the interior, on the boundary, or in the exterior of a ring. The ring may be oriented in either direction.
This method does not first check the point against the envelope of the ring.
- Parameters
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| p | point to check for ring inclusion |
| ring | an array of coordinates representing the ring (which must have first point identical to last point) |
- Returns
- the Location of p relative to the ring
The documentation for this class was generated from the following file:
