/*
 * [Aerial.java]
 *
 * Summary: draw dual dipole FM antenna.
 *
 * Copyright: (c) 2013-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2013-02-07 initial version.
 */
package com.mindprod.connectors;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Polygon;

import static java.lang.System.*;

/**
 * draw dual dipole FM antenna.
 * <p/>
 * see http://www.wikihow.com/Make-an-FM-Antenna
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2013-02-07 initial version
 * @since 2013-02-07
 */
class Aerial extends ConnectorPanel
    {
    private static final boolean DEBUGGING = false;

    /**
     * horizontal unstripped part
     */
    private static final int ANTENNA_LENGTH = 800;

    /**
     * verticaL unstripped part
     */
    private static final int FEED_LENGTH = 380;

    /**
     * length of stripped leads of cable
     */
    private static final int LEAD_LENGTH = 50;

    /**
     * width of cable
     */
    private static final int PAIR_WIDTH = 30;

    /**
     * width of wire
     */
    private static final int WIRE_WIDTH = 4;

    private static final int xac;

    private static final int xae;

    private static final int xaez;

    private static final int xaw;

    private static final int xawz;

    private static final int xfc;

    private static final int xfe;

    private static final int xfw;

    private static final int yac;

    private static final int yan;

    private static final int yas;

    private static final int yfc;

    private static final int yfn;

    private static final int yfnz;

    private static final int yfs;

    private static final int yfsz;

    /**
     * horizontal unstriped part
     */
    private static final Color ANTENNA_COLOR = new Color( 0x000030 ); // very dark blue

    /**
     * verticaL unstripped part
     */
    private static final Color BACKGROUND = Color.WHITE;

    /**
     * verticaL unstripped part
     */
    private static final Color FEED_COLOR = new Color( 0x003000 ); // very dark green

    /**
     * wire colour
     */
    private static final Color WIRE_COLOR = new Color( 0xd9987c ); // copper

    static
        {
        xac = 500;
        xae = xac + ANTENNA_LENGTH / 2;
        xaez = xae + LEAD_LENGTH;
        xaw = xac - ANTENNA_LENGTH / 2;
        xawz = xaw - LEAD_LENGTH;
        xfc = 500;
        xfe = xfc + PAIR_WIDTH / 2;
        xfw = xfc - PAIR_WIDTH / 2;
        yac = 400;
        yan = yac - PAIR_WIDTH / 2;
        yas = yac + PAIR_WIDTH / 2;
        yfc = 653;
        yfn = yfc - FEED_LENGTH / 2;
        yfnz = yfn - LEAD_LENGTH;
        yfs = yfc + FEED_LENGTH / 2;
        yfsz = yfs + LEAD_LENGTH;
        }

    Aerial()
        {
        super( 1000, 1000 );
        }

    /**
     * draw a VGA male connector
     *
     * @param g where to paint
     */
    public void paintComponent( Graphics g )
        {
        if ( DEBUGGING )
            {
            out.println( "xa " + xawz + " " + xaw + " " + xac + " " + xae + " " + xaez );
            out.println( "ya " + yan + " " + yac + " " + yas );
            out.println( "xf " + xfw + " " + xfc + " " + xfe );
            out.println( "yf " + yfnz + " " + yfn + " " + yfc + " " + yfs + " " + yfsz );
            }
        super.paintComponent( g );
        final Graphics2D g2d = ( Graphics2D ) g;
        g2d.setColor( BACKGROUND );
        g2d.fillRect( 0, 0, 1000, 1000 );
        g2d.setColor( WIRE_COLOR );
        g2d.setStroke( new BasicStroke( WIRE_WIDTH ) );
        Polygon copper = new Polygon();
        // start in bottom right corner cand work counter clockwise
        copper.addPoint( xfe, yfsz );
        copper.addPoint( xfe, yfnz );
        copper.addPoint( xaez, yas );
        copper.addPoint( xaez, yas );
        copper.addPoint( xaez + PAIR_WIDTH / 2, yac );
        copper.addPoint( xaez, yan );
        copper.addPoint( xawz, yan );
        copper.addPoint( xawz - PAIR_WIDTH / 2, yac );
        copper.addPoint( xawz, yas );
        copper.addPoint( xfw, yfnz );
        copper.addPoint( xfw, yfsz );
        g2d.draw( copper );
        // antenna insulation
        g2d.setColor( ANTENNA_COLOR );
        g2d.setStroke( new BasicStroke( 1 ) );
        g2d.fillRect( xaw - 1, yan - 2, ANTENNA_LENGTH, PAIR_WIDTH + WIRE_WIDTH );
        // notch left end
        g2d.setColor( BACKGROUND );
        g2d.fillRect( xaw - 1, yan + WIRE_WIDTH - 1, LEAD_LENGTH, PAIR_WIDTH - WIRE_WIDTH - 1 );
        // notch right end
        g2d.fillRect( xae - 1 - LEAD_LENGTH + 1, yan - 1 + WIRE_WIDTH, LEAD_LENGTH, PAIR_WIDTH - WIRE_WIDTH - 1 );
        // outer middle notch
        g2d.fillRect( xac - LEAD_LENGTH * 2, yan - 1 + WIRE_WIDTH, LEAD_LENGTH * 4, PAIR_WIDTH - WIRE_WIDTH - 1 );
        // inner middle notch
        g2d.fillRect( xac - LEAD_LENGTH, yan - 1 + WIRE_WIDTH, LEAD_LENGTH * 2, PAIR_WIDTH - WIRE_WIDTH + 3 );
        // label
        g2d.setFont( new Font( "Dialog", Font.PLAIN, 40 ) );
        g2d.setColor( Color.BLACK );
        drawCenteredString( g2d, "antenna", xac, yac - 100 );
        // feed insulation
        g2d.setColor( FEED_COLOR );
        g2d.fillRect( xfw - 1, yfn, PAIR_WIDTH + WIRE_WIDTH, FEED_LENGTH );
        // notch top end
        g2d.setColor( BACKGROUND );
        g2d.fillRect( xfw + WIRE_WIDTH - 1, yfsz, PAIR_WIDTH - WIRE_WIDTH, LEAD_LENGTH );
        // notch bottom end
        g2d.fillRect( xfw + WIRE_WIDTH, yfs + 1, PAIR_WIDTH - WIRE_WIDTH, LEAD_LENGTH + 2 );
        // label
        g2d.setFont( new Font( "Dialog", Font.PLAIN, 40 ) );
        g2d.setColor( Color.BLACK );
        drawCenteredString( g2d, "feed", 600, 750 );
        // repair damage to antenna where feed joins
        g2d.setStroke( new BasicStroke( WIRE_WIDTH ) );
        g2d.setColor( BACKGROUND );
        g2d.drawLine( xfw, yas - 1, xfe, yas - 1 );
        g2d.setColor( WIRE_COLOR );
        g2d.drawLine( xfc - LEAD_LENGTH, yas, xfw, yas );
        g2d.drawLine( xfe, yas, xfc + LEAD_LENGTH, yas );
        }
    }