find Closest Line - Java java.lang

Java examples for java.lang:Math Geometry Line

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Description

find Closest Line

Demo Code

/*/*w ww. j ava 2  s .  c o  m*/
 * Copyright (c) 2014 tabletoptool.com team.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     rptools.com team - initial implementation
 *     tabletoptool.com team - further development
 */
import java.awt.geom.Area;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.PathIterator;
import java.awt.geom.Point2D;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class Main{
    public static Line2D findClosestLine(Point2D origin, PointNode pointList) {

        Line2D line = null;
        double distance = 0;

        PointNode node = pointList;
        do {
            Line2D newLine = new Line2D.Double(node.previous.point,
                    node.point);
            double newDistance = getDistanceToCenter(origin, newLine);
            if (line == null || newDistance < distance) {
                line = newLine;
                distance = newDistance;
            }

            node = node.next;
        } while (node != pointList);

        return line;
    }
    public static double getDistanceToCenter(Point2D p, Line2D line) {

        Point2D midPoint = new Point2D.Double((line.getP1().getX() + line
                .getP2().getX()) / 2, (line.getP1().getY() + line.getP2()
                .getY()) / 2);

        return Math.hypot(midPoint.getX() - p.getX(),
                midPoint.getY() - p.getY());
    }
}

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