com.revolsys.jts.algorithm

Class NonRobustLineIntersector

java.lang.Object

com.revolsys.jts.algorithm.LineIntersector

com.revolsys.jts.algorithm.NonRobustLineIntersector

public class NonRobustLineIntersector
extends LineIntersector

A non-robust version of LineIntersector.

Version:

1.7

Field Summary

Fields inherited from class com.revolsys.jts.algorithm.LineIntersector

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

Constructor Summary

Constructors

Constructor and Description
NonRobustLineIntersector()

Method Summary

Methods

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

Methods inherited from class com.revolsys.jts.algorithm.LineIntersector

computeEdgeDistance, computeIntersection, computeIntLineIndex, computeIntLineIndex, getEdgeDistance, getEndpoint, getIndexAlongSegment, getIntersection, getIntersectionAlongSegment, getIntersectionNum, getScale, hasIntersection, isCollinear, isEndPoint, isInteriorIntersection, isInteriorIntersection, isIntersection, isProper, nonRobustComputeEdgeDistance, setScale, 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.

computeIntersect

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

Specified by:

computeIntersect in class LineIntersector

computeIntersection

public void computeIntersection(Point p,
                       Point p1,
                       Point 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