/*
 * [Triangle.java]
 *
 * Summary: Draws green equilateral triangle.
 *
 * Copyright: (c) 2011-2017 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 2011-01-29 initial version.
 */
package com.mindprod.connectors;

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

/**
 * Draws green equilateral triangle.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2011-01-29 initial version.
 * @since 2011-01-29
 */
class Triangle extends ConnectorPanel
    {
    private static final int HEIGHT = ( int ) Math.floor( Math.sqrt( 3 ) * 500 + .5 );

    private static final int TOP_MARGIN = ( 1000 - HEIGHT ) / 2;

    /**
     * thickness of the outline around the slots.
     */
    private static final int LINER = 10;

    private static final int SIDE_MARGIN = 10;

    private static final Color OUTLINE_COLOR = Color.BLACK;

    private final Color fillColor;

    Triangle( Color fillColor )
        {
        super( 1000, 1000 );
        this.fillColor = fillColor;
        }

    /**
     * draw a green equilateral triangle, outlined.
     *
     * @param g where to paint
     */
    public void paintComponent( Graphics g )
        {
        super.paintComponent( g );
        final Graphics2D g2d = ( Graphics2D ) g;
        // D connector contains three rows of pins, 1..15 with pin 9 missing.
        // start bottom left and go counterclockwise
        final Polygon outline = new Polygon( new int[] { SIDE_MARGIN, 500, 1000 - SIDE_MARGIN },
                new int[] { HEIGHT + TOP_MARGIN, SIDE_MARGIN, HEIGHT + TOP_MARGIN },
                3 );
        g2d.setColor( fillColor );
        g2d.fillPolygon( outline );
        g2d.setColor( OUTLINE_COLOR );
        g2d.setStroke( new BasicStroke( LINER ) );
        g2d.drawPolygon( outline );
        }
    }