Package pamViewFX.fxNodes.connectionPane

Class ConnectionNodeUtils

java.lang.Object
pamViewFX.fxNodes.connectionPane.ConnectionNodeUtils
public class ConnectionNodeUtils extends Object
Useful functions for connection nodes.
Author:
Jamie Macaulay

  • Constructor Summary

    Constructors
    Constructor
    Description
    ConnectionNodeUtils()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static javafx.geometry.Point2D
    closestPointOnRect(double x, double y, double width, double height, double xp, double yp)
    Get the closest point to the edge of a rectangle from another point
    static javafx.geometry.Point2D
    findClosestPoint(double x1, double y1, double x2, double y2, double xp, double yp)
    Computes the closest point on a line to another point.
    static javafx.geometry.Point2D
    findClosestPoint(javafx.geometry.Point2D p1, javafx.geometry.Point2D p2, javafx.geometry.Point2D p3)
    Computes the closest point on a line to another point.
    protected static javafx.geometry.Point2D
    getLinePosition(double x1, double x2, double y1, double y2, Double fraction)
    Calculate the position of a point percentage along a line.
    static javafx.geometry.Point2D
    intersection(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
    Computes the intersection between two lines.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ConnectionNodeUtils

      public ConnectionNodeUtils()

  • Method Details

    • findClosestPoint

      public static javafx.geometry.Point2D findClosestPoint(double x1, double y1, double x2, double y2, double xp, double yp)
      Computes the closest point on a line to another point.
      Parameters:
      x1 - - x start of line.
      y1 - - y start of line.
      x2 - - x end of line.
      y2 - - y end of line.
      xp - - x point to test.
      yp - - y point to test.
      Returns:
      the closest point on line.

    • findClosestPoint

      public static javafx.geometry.Point2D findClosestPoint(javafx.geometry.Point2D p1, javafx.geometry.Point2D p2, javafx.geometry.Point2D p3)
      Computes the closest point on a line to another point.
      Parameters:
      p1 - - start of the line.
      p2 - - end of the line.
      p3 - - point to measure closest point on line to.
      Returns:
      the closest point on the line to p3. This will be somewhere between p1 and p2.

    • closestPointOnRect

      public static javafx.geometry.Point2D closestPointOnRect(double x, double y, double width, double height, double xp, double yp)
      Get the closest point to the edge of a rectangle from another point
      Parameters:
      x - - rectangle layout x (top left corner)
      y - - rectangle layout y (top left corner)
      width - - rectangle width.
      height - - rectangle height.
      xp - - the x position of point to test.
      yp - - the y position of point to test.
      Returns:
      - the closest point to (xp, yp) located on the rectangle's edge.

    • getLinePosition

      protected static javafx.geometry.Point2D getLinePosition(double x1, double x2, double y1, double y2, Double fraction)
      Calculate the position of a point percentage along a line.
      Parameters:
      x1 - - x co-ordinate of start of line
      x2 - - x co-ordinate of end of line
      y1 - - y co-ordinate of start of line
      y2 - - y co-ordinate of end of line
      Returns:
      the position of the point if fraction % along line.

    • intersection

      public static javafx.geometry.Point2D intersection(int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
      Computes the intersection between two lines. The calculated point is approximate, since integers are used. If you need a more precise result, use doubles everywhere. (c) 2007 Alexander Hristov. Use Freely (LGPL license). http://www.ahristov.com
      Parameters:
      x1 - Point 1 of Line 1
      y1 - Point 1 of Line 1
      x2 - Point 2 of Line 1
      y2 - Point 2 of Line 1
      x3 - Point 1 of Line 2
      y3 - Point 1 of Line 2
      x4 - Point 2 of Line 2
      y4 - Point 2 of Line 2
      Returns:
      Point where the segments intersect, or null if they don't