using System;
using MessagingToolkit.QRCode.Codec.Util;

namespace MessagingToolkit.QRCode.Geom;

public class Line
{
	internal int x1;

	internal int y1;

	internal int x2;

	internal int y2;

	public virtual bool Horizontal
	{
		get
		{
			if (y1 == y2)
			{
				return true;
			}
			return false;
		}
	}

	public virtual bool Vertical
	{
		get
		{
			if (x1 == x2)
			{
				return true;
			}
			return false;
		}
	}

	public virtual Point Center
	{
		get
		{
			int x = (x1 + x2) / 2;
			int y = (y1 + y2) / 2;
			return new Point(x, y);
		}
	}

	public virtual int Length
	{
		get
		{
			int num = Math.Abs(x2 - x1);
			int num2 = Math.Abs(y2 - y1);
			return QRCodeUtility.sqrt(num * num + num2 * num2);
		}
	}

	public Line()
	{
		x1 = (y1 = (x2 = (y2 = 0)));
	}

	public Line(int x1, int y1, int x2, int y2)
	{
		this.x1 = x1;
		this.y1 = y1;
		this.x2 = x2;
		this.y2 = y2;
	}

	public Line(Point p1, Point p2)
	{
		x1 = p1.X;
		y1 = p1.Y;
		x2 = p2.X;
		y2 = p2.Y;
	}

	public virtual Point getP1()
	{
		return new Point(x1, y1);
	}

	public virtual Point getP2()
	{
		return new Point(x2, y2);
	}

	public virtual void setLine(int x1, int y1, int x2, int y2)
	{
		this.x1 = x1;
		this.y1 = y1;
		this.x2 = x2;
		this.y2 = y2;
	}

	public virtual void setP1(Point p1)
	{
		x1 = p1.X;
		y1 = p1.Y;
	}

	public virtual void setP1(int x1, int y1)
	{
		this.x1 = x1;
		this.y1 = y1;
	}

	public virtual void setP2(Point p2)
	{
		x2 = p2.X;
		y2 = p2.Y;
	}

	public virtual void setP2(int x2, int y2)
	{
		this.x2 = x2;
		this.y2 = y2;
	}

	public virtual void translate(int dx, int dy)
	{
		x1 += dx;
		y1 += dy;
		x2 += dx;
		y2 += dy;
	}

	public static bool isNeighbor(Line line1, Line line2)
	{
		if (Math.Abs(line1.getP1().X - line2.getP1().X) < 2 && Math.Abs(line1.getP1().Y - line2.getP1().Y) < 2 && Math.Abs(line1.getP2().X - line2.getP2().X) < 2 && Math.Abs(line1.getP2().Y - line2.getP2().Y) < 2)
		{
			return true;
		}
		return false;
	}

	public static bool isCross(Line line1, Line line2)
	{
		if (line1.Horizontal && line2.Vertical)
		{
			if (line1.getP1().Y > line2.getP1().Y && line1.getP1().Y < line2.getP2().Y && line2.getP1().X > line1.getP1().X && line2.getP1().X < line1.getP2().X)
			{
				return true;
			}
		}
		else if (line1.Vertical && line2.Horizontal && line1.getP1().X > line2.getP1().X && line1.getP1().X < line2.getP2().X && line2.getP1().Y > line1.getP1().Y && line2.getP1().Y < line1.getP2().Y)
		{
			return true;
		}
		return false;
	}

	public static Line getLongest(Line[] lines)
	{
		Line line = new Line();
		for (int i = 0; i < lines.Length; i++)
		{
			if (lines[i].Length > line.Length)
			{
				line = lines[i];
			}
		}
		return line;
	}

	public override string ToString()
	{
		return "(" + Convert.ToString(x1) + "," + Convert.ToString(y1) + ")-(" + Convert.ToString(x2) + "," + Convert.ToString(y2) + ")";
	}
}