Package org.meteoinfo.jts.algorithm

Class NonRobustLineIntersector

java.lang.Object

org.meteoinfo.jts.algorithm.LineIntersector

org.meteoinfo.jts.algorithm.NonRobustLineIntersector

public class NonRobustLineIntersector
extends LineIntersector

A non-robust version of LineIntersector.

Field Summary

Fields inherited from class org.meteoinfo.jts.algorithm.LineIntersector

COLLINEAR, COLLINEAR_INTERSECTION, DO_INTERSECT, DONT_INTERSECT, inputLines, intLineIndex, intPt, isProper, NO_INTERSECTION, pa, pb, POINT_INTERSECTION, precisionModel, result

Constructor Summary

Constructors

Constructor	Description
NonRobustLineIntersector()

Method Summary

Modifier and Type	Method	Description
protected int	computeIntersect(Coordinate p1, Coordinate p2, Coordinate p3, Coordinate p4)
void	computeIntersection(Coordinate p, Coordinate p1, Coordinate p2)	Compute the intersection of a point p and the line p1-p2.
static boolean	isSameSignAndNonZero(double a, double b)

Methods inherited from class org.meteoinfo.jts.algorithm.LineIntersector

computeEdgeDistance, computeIntersection, computeIntLineIndex, computeIntLineIndex, getEdgeDistance, getEndpoint, getIndexAlongSegment, getIntersection, getIntersectionAlongSegment, getIntersectionNum, hasIntersection, isCollinear, isEndPoint, isInteriorIntersection, isInteriorIntersection, isIntersection, isProper, nonRobustComputeEdgeDistance, setMakePrecise, setPrecisionModel, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NonRobustLineIntersector

public NonRobustLineIntersector()

Method Detail

isSameSignAndNonZero

public static boolean isSameSignAndNonZero(double a,
                                           double b)

Returns:

true if both numbers are positive or if both numbers are negative. Returns false if both numbers are zero.

computeIntersection

public void computeIntersection(Coordinate p,
                                Coordinate p1,
                                Coordinate p2)

Description copied from class: LineIntersector

Compute the intersection of a point p and the line p1-p2. This function computes the boolean value of the hasIntersection test. The actual value of the intersection (if there is one) is equal to the value of p.

Specified by:

computeIntersection in class LineIntersector

computeIntersect

protected int computeIntersect(Coordinate p1,
                               Coordinate p2,
                               Coordinate p3,
                               Coordinate p4)

Specified by:

computeIntersect in class LineIntersector