package com.aaaaahhhhhhh.bananapuncher714.tess4j;

import java.awt.Color;
import java.awt.Graphics;
import java.util.Arrays;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

import com.aaaaahhhhhhh.bananapuncher714.mesh.Point;
import com.aaaaahhhhhhh.bananapuncher714.mesh.Polygon;
import com.aaaaahhhhhhh.bananapuncher714.mesh.Vector2d;
import com.aaaaahhhhhhh.bananapuncher714.tess4j.region.RegionSimple;
import com.aaaaahhhhhhh.bananapuncher714.tess4j.region.RegionSimple.GluWindingRule;
import com.aaaaahhhhhhh.bananapuncher714.tess4j.region.WindingRuleSimple;

public class Tess4jTest extends JPanel {
	JFrame f;
	
	private int windowWidth = 1200;
	private int windowHeight = 1000;
	
	private int centerX = 600;
	private int centerY = 400;
	
	private Graphics g;
	
	private int scale = 100;
	
	public static void main( String[] args ) {
		SwingUtilities.invokeLater( new Runnable() {
			@Override
			public void run() {
				new Tess4jTest();
			}
		} );
	}
	
	public Tess4jTest() {
		f = new JFrame( "Drawing Board" );
		f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
		
		f.add( this );
		
		f.setSize( windowWidth, windowHeight );
		f.setVisible( true );
		f.setResizable( true );
		
		f.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
	}
	
	public void drawPoint( double x, double y ) {
		g.fillRect( ( int ) x * scale, ( int ) y * scale, scale, scale );
	}
	
	private static Vector2d rotate( Vector2d a, double angle ) {
        double cos = Math.cos( angle );
        double sin = Math.sin( angle );
        double ax = a.getX() * cos - a.getY() * sin;
        double ay = a.getX() * sin + a.getY() * cos;
        return new Vector2d( ax, ay );
    }
	
	@Override
	public void paintComponent( Graphics g ) {
		super.paintComponent( g );
		this.g = g;

//        Vertex v = null;
//        for ( int i = 0; i < 100; i++ ) {
//            double deg = Math.random() * 360;
//            double dist = Math.random() * 100 + 100;
//            double x = dist * Math.cos( Math.toRadians( deg ) );
//            double y = dist * Math.sin( Math.toRadians( deg ) );
//            HalfWing edge = new HalfWing();
//            edge.getDest().setPosition( new Vector2d( x, y ) );
//            if ( v == null ) {
//                v = edge.getOrigin();
//            } else {
//                HalfWing.splice( edge, v.getWing() );
//            }
//        }
//        v.update();
//        
//        HalfWing edge = v.getWing();
//        int i = 0;
//        double ic = 0;
//        do {
//            Vector2d dest = edge.getDest().getPosition();
//            g.drawLine( centerX, centerY, ( int ) dest.getX() + centerX, ( int ) dest.getY() + centerY );
//            dest = dest.normalized();
//            g.drawString( i++ + "", ( int ) ( dest.x * 200 * ( ic + 1.1 ) ) + centerX, ( int ) ( dest.y * 200 * ( ic + 1.1 ) ) + centerY );
//            ic = ( ic + 0.07 ) % .7;
//            edge = edge.getPrev();
//        } while ( edge != v.getWing() );
//
//        v.sort();
//        
//        g.drawLine( centerX + 700, centerY, centerX + 700, centerY - 400 );
//        edge = v.getWing();
//        i = 0;
//        ic = 0;
//        do {
//            Vector2d dest = edge.getDest().getPosition();
//            g.drawLine( centerX + 700, centerY, ( int ) dest.getX() + centerX + 700, ( int ) dest.y + centerY );
//            dest = dest.normalized();
//            g.drawString( i++ + "", ( int ) ( dest.x * 200 * ( ic + 1.1 ) ) + centerX + 700, ( int ) ( dest.y * 200 * ( ic + 1.1 ) ) + centerY );
//            ic = ( ic + 0.07 ) % .7;
//            edge = edge.getPrev();
//        } while ( edge != v.getWing() );
		
//        Tess4j< RegionSimple > tess4j = new Tess4j< RegionSimple >( () -> { return new RegionSimple( GluWindingRule.ODD ); } );
        Tess4j< RegionSimple > tess4j = new Tess4j< RegionSimple >( () -> { return new RegionSimple( GluWindingRule.ODD ); }, new Vector2dComparator() {
            @Override
            public double compareX( Vector2d a, Vector2d b ) {
                a = rotate( a, 128 );
                b = rotate( b, 128 );
                return a.getX() - b.getX();
            }

            @Override
            public double compareY(Vector2d a, Vector2d b ) {
                a = rotate( a, 128 );
                b = rotate( b, 128 );
                return b.getY() - a.getY();
            }
        } );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -1, -1 ),
//                new Point( 1, -1 ),
//                new Point( 1, 1 ),
//                new Point( -1, 1 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -1, 1 ),
//                new Point( 1, 1 ),
//                new Point( 1, 3 ),
//                new Point( -1, 3 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -2, -1 ),
//                new Point( -1, -1 ),
//                new Point( -1, 2 ),
//                new Point( -2, 2 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -5, 0 ),
//                new Point( -2, 0 ),
//                new Point( -2, 1 ),
//                new Point( -5, 1 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -1.75, .5 ),
//                new Point( 4.25, .5 ),
//                new Point( -0.25, -2.5 ),
//                new Point( 1.25, 2 ),
//                new Point( 2.75, -2.5 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -4, -2 ),
//                new Point( -1, -2 ),
//                new Point( -1, 1.5 ),
//                new Point( -4, 1.5 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( -1, 0 ),
//                new Point( 0, 1.5 ),
//                new Point( 1, 0 )
//                ) ), new WindingRuleSimple() );
//        tess4j.addPolygon( new Polygon( Arrays.asList(
//                new Point( 1, 0 ),
//                new Point( 0, -2 ),
//                new Point( -1, 0 )
//                ) ), new WindingRuleSimple() );
        for ( int i = 0; i < 4; i++ ) {
            for ( int j = 0; j < 4; j++ ) {
                tess4j.addPolygon( new Polygon( Arrays.asList(
                        new Point( i, j ),
                        new Point( i, j + 1 ),
                        new Point( i + 1, j + 1 ),
                        new Point( i + 1, j )
                        ) ), new WindingRuleSimple() );
//                tess4j.addPolygon( new Polygon( Arrays.asList(
//                        new Point( i, j ),
//                        new Point( i, j + 1 ),
//                        new Point( i + 1, j ),
//                        new Point( i + 1, j + 1 )
//                        ) ), new WindingRuleSimple() );
            }
        }
        
        tess4j.tessellate();
        
        List< Polygon > polygons = tess4j.getPolygons();
        
        System.out.println( "Polygon count" );
        System.out.println( polygons.size() );
        for ( Polygon p : polygons ) {
            System.out.println( p.getPoints().size() );
            int size = p.getPoints().size();
            int[] xPoints = new int[ size ];
            int[] yPoints = new int[ size ];
            
            for ( int i = 0; i < p.getPoints().size(); i++ ) {
                Point point = p.getPoints().get( i );
                
                System.out.println( point.getX() + ", " + point.getY() );
                Vector2d pVec = new Vector2d( point.getX(), point.getY() );
                pVec = rotate( pVec, 0 );
                point = new Point( pVec.getX(), pVec.getY() );
                
                xPoints[ i ] = ( int ) ( point.getX() * scale ) + centerX;
                yPoints[ i ] = 100 - ( int ) ( point.getY() * scale ) + centerY;
            }
            
            g.setColor( new Color( ( int ) ( Math.random() * 0xFFFFFF ) ) );
            g.fillPolygon( xPoints, yPoints, size );
        }
        
        g.setColor( Color.BLACK );
        for ( Polygon p : polygons ) {
            for ( Point point : p.getPoints() ) {
                Vector2d pVec = new Vector2d( point.getX(), point.getY() );
                pVec = rotate( pVec, 0 );
                point = new Point( pVec.getX(), pVec.getY() );
                
                double diff = scale * .05;
                g.drawRect( ( int ) ( point.getX() * scale ) + centerX - ( int ) diff, 100 - ( int ) ( point.getY() * scale ) + centerY - ( int ) diff, ( int ) ( diff * 2 ), ( int ) ( diff * 2 ) );
            }
        }
        
        g.drawLine( centerX, 0, centerX, 2000 );
        g.drawLine( 0, centerY + 100, 2000, centerY + 100 );
        
//		Point[] points = {
//		        new Point( 0, -2 ),
//		        new Point( 1.5, -3.0 ),
//		        new Point( 0.0, -2.0 ),
//		        new Point( 0.9545454545454546, -1.3636363636363638 ),
//		        new Point( -0.8333333333333334, -1.0 ),
//		        new Point( 0.8333333333333334, -1.0 ),
//		        new Point( -0.5, 0.0 ),
//		        new Point( 0.5, 0.0 ),
//		        new Point( -0.16666666666666669, 1.0 ),
//		        new Point( 0.16666666666666669, 1.0 ),
//		        new Point( -0.16666666666666669, 1.0 ),
//		        new Point( 1, 1 ),
//                new Point( -0.16666666666666669, 1.0 ),
//		        new Point( 0, 1.5 ),
//		        new Point( 0, 1.5 ),
//                new Point( 0.16666666666666669, 1.0 ),
//		        new Point( -1, 2 ),
//		        new Point( 1, 2 ),
//		};
//		
//		int size = points.length >> 1;
//		for ( int i = 0; i < size;i++ ) {
//		    Point a = points[ i << 1 ];
//		    Point b = points[ ( i << 1 ) + 1 ];
//
//		    g.drawLine( ( int ) ( a.x * scale ) + centerX, ( int ) ( a.y * scale ) + centerY, ( int ) ( b.x * scale ) + centerX, ( int ) ( b.y * scale ) + centerY );
//		}
	}
}