create Arrow Shape - Java 2D Graphics

Java examples for 2D Graphics:Shape

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Description

create Arrow Shape

Demo Code

/*//from w  w w  .ja  v a2s.c o  m
 * Copyright (C) 2013 by Array Systems Computing Inc. http://www.array.ca
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see http://www.gnu.org/licenses/
 */
//package com.java2s;

public class Main {
    public static void createArrow(int x, int y, int xx, int yy, int i1,
            double[] ipts) {
        ipts[0] = x;
        ipts[1] = y;
        ipts[2] = xx;
        ipts[3] = yy;
        final double d = xx - x;
        final double d1 = -(yy - y);
        double d2 = Math.sqrt(d * d + d1 * d1);
        final double d3;
        final double size = 2.0;
        if (d2 > (3.0 * i1))
            d3 = i1;
        else
            d3 = d2 / 3.0;
        if (d2 < 1.0)
            d2 = 1.0;
        if (d2 >= 1.0) {
            final double d4 = (d3 * d) / d2;
            final double d5 = -((d3 * d1) / d2);
            final double d6 = (double) xx - size * d4;
            final double d7 = (double) yy - size * d5;
            ipts[4] = (int) (d6 - d5);
            ipts[5] = (int) (d7 + d4);
            ipts[6] = (int) (d6 + d5);
            ipts[7] = (int) (d7 - d4);
        }
    }
}

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