reverse Path - Java 2D Graphics

Java examples for 2D Graphics:Path

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Description

reverse Path

Demo Code


//package com.java2s;
import java.awt.geom.PathIterator;
import java.awt.geom.GeneralPath;

public class Main {
    public static GeneralPath reversePath(GeneralPath path) {

        GeneralPath newPath = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
        int numOfLinePoints = getNumPathPoints(path);
        double seg[] = new double[6];

        for (int i = numOfLinePoints; i > 0; i--) {

            final PathIterator pi2 = path.getPathIterator(null);

            for (int j = 0; j < (i - 1); j++) {
                pi2.next();//  w  w  w. j  a va  2 s.c  o  m
            }
            int segType = pi2.currentSegment(seg);

            if (i == numOfLinePoints) {
                newPath.moveTo((int) seg[0], (int) seg[1]);
            } else {
                newPath.lineTo((int) seg[0], (int) seg[1]);
            }
        }
        return newPath;
    }

    /** returns the number path points of "path". */
    public static int getNumPathPoints(GeneralPath path) {
        int count = 0;
        for (PathIterator i = path.getPathIterator(null); !i.isDone(); i
                .next()) {
            count++;
        }
        return count;
    }
}

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