net.thevpc.diagram4j.util

Class GeomUtils

java.lang.Object

net.thevpc.diagram4j.util.GeomUtils

public class GeomUtils
extends Object

Author:

vpc

Constructor Summary

Constructors

Constructor and Description
GeomUtils()

Method Summary

Modifier and Type	Method and Description
static double	distance(int ax, int ay, int bx, int by)
static double	distance(int px, int py, int ax, int ay, int bx, int by) see : https://demonstrations.wolfram.com/DistanceOfAPointToASegment To compute the distance from point p to segment ab (all as complex numbers) compute first z=(p-a)/(b-a).
static boolean	isOnSegment(int cx, int cy, int ax, int ay, int bx, int by)
static boolean	isOnSegment(Point test, Point segmentStartPoint, Point segmentEndPoint)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

GeomUtils

public GeomUtils()

Method Detail

isOnSegment

public static boolean isOnSegment(Point test,
                                  Point segmentStartPoint,
                                  Point segmentEndPoint)

isOnSegment

public static boolean isOnSegment(int cx,
                                  int cy,
                                  int ax,
                                  int ay,
                                  int bx,
                                  int by)

main

public static void main(String[] args)

distance

public static double distance(int px,
                              int py,
                              int ax,
                              int ay,
                              int bx,
                              int by)

see : https://demonstrations.wolfram.com/DistanceOfAPointToASegment To compute the distance from point p to segment ab (all as complex numbers) compute first z=(p-a)/(b-a). If 0 ≤ Re[z] ≤ 1 then the distance is equal to Abs[Im[z](b-a)]. If not, it is equal to the smallest of the distances from p to a or to b.

Parameters:

px - x to check if it is between a and b

py - y to check if it is between a and b

ax - a x

ay - a y

bx - b x

by - b y

Returns:

distance

distance

public static double distance(int ax,
                              int ay,
                              int bx,
                              int by)