20 #ifndef GEOS_ALGORITHM_LINEINTERSECTOR_H
21 #define GEOS_ALGORITHM_LINEINTERSECTOR_H
23 #include <geos/export.h>
26 #include <geos/geom/Coordinate.h>
83 precisionModel(initialPrecisionModel),
117 precisionModel = newPM;
136 POINT_INTERSECTION = 1,
139 COLLINEAR_INTERSECTION = 2
146 std::string toString()
const;
156 return result != NO_INTERSECTION;
179 return intPt[intIndex];
217 return hasIntersection() && isProperVar;
276 size_t intLineIndex[2][2];
285 return result == COLLINEAR_INTERSECTION;
294 return hasIntersection() && !isProperVar;
297 void computeIntLineIndex();
299 void computeIntLineIndex(
size_t segmentIndex);
A LineIntersector is an algorithm that can both test whether two line segments intersect and compute ...
Definition: LineIntersector.h:49
intersection_type
Definition: LineIntersector.h:131
const geom::Coordinate & getIntersection(size_t intIndex) const
Definition: LineIntersector.h:177
void computeIntersection(const geom::Coordinate &p1, const geom::Coordinate &p2, const geom::Coordinate &p3, const geom::Coordinate &p4)
Computes the intersection of the lines p1-p2 and p3-p4.
static bool hasIntersection(const geom::Coordinate &p, const geom::Coordinate &p1, const geom::Coordinate &p2)
Same as above but doesn't compute intersection point. Faster.
size_t getIndexAlongSegment(size_t segmentIndex, size_t intIndex)
Computes the index of the intIndex'th intersection point in the direction of a specified input line s...
void setPrecisionModel(const geom::PrecisionModel *newPM)
Definition: LineIntersector.h:115
bool isInteriorIntersection()
Tests whether either intersection point is an interior point of one of the input segments.
bool isInteriorIntersection(size_t inputLineIndex)
Tests whether either intersection point is an interior point of the specified input segment.
bool hasIntersection() const
Definition: LineIntersector.h:154
double getEdgeDistance(size_t geomIndex, size_t intIndex) const
Computes the "edge distance" of an intersection point along the specified input line segment.
static bool isSameSignAndNonZero(double a, double b)
void computeIntersection(const geom::Coordinate &p, const geom::Coordinate &p1, const geom::Coordinate &p2)
const geom::Coordinate & getIntersectionAlongSegment(size_t segmentIndex, size_t intIndex)
Computes the intIndex'th intersection point in the direction of a specified input line segment.
bool isProper() const
Tests whether an intersection is proper.
Definition: LineIntersector.h:215
static double computeEdgeDistance(const geom::Coordinate &p, const geom::Coordinate &p0, const geom::Coordinate &p1)
static double interpolateZ(const geom::Coordinate &p, const geom::Coordinate &p0, const geom::Coordinate &p1)
Return a Z value being the interpolation of Z from p0 and p1 at the given point p.
size_t getIntersectionNum() const
Definition: LineIntersector.h:164
bool isIntersection(const geom::Coordinate &pt) const
Test whether a point is a intersection point of two line segments.
Coordinate is the lightweight class used to store coordinates.
Definition: Coordinate.h:60
Specifies the precision model of the Coordinate in a Geometry.
Definition: PrecisionModel.h:87
Basic namespace for all GEOS functionalities.
Definition: IndexedNestedRingTester.h:26