/**
 *
 * @author    seagle
 * @date      2024-7-22
 * @Description 管路图元件对象封装
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MECF.Framework.UI.Core.DxfScript
{
    public class GasLine : GasBaseShape
    {
        public double X1 { get; set; }
        public double Y1 { get; set; }
        public double X2 { get; set; }
        public double Y2 { get; set; }
        public bool IsHorizental { get; set; } = false;
        public bool IsVertical { get; set; } = false;
        
        public string Tag { get; set; }
        public GasLine(double x1,double y1,double x2,double y2)
        {
            X1 = x1;
            X2 = x2;
            Y1 = y1;
            Y2 = y2;
            double x_space = (x1 >= x2) ? x1 - x2 : x2 - x1;
            double y_space = (y1 >= y2) ? y1 - y2 : y2 - y1;
            if (y_space <= GasBaseShape.E)
            {
                IsHorizental = true;
                Id = CreateId(ShapeType.HLINE, Math.Min(x1,x2), Math.Max(y1,y2));
            }
            else if (x_space <= GasBaseShape.E)
            {
                IsVertical = true;
                Id = CreateId(ShapeType.VLINE, Math.Min(x1, x2), Math.Max(y1, y2));
            }
            else
            {
                double k = (y1 - y2) / (x1 - x2);
                if (k > E)
                {
                    //锐角
                    Id = CreateId(ShapeType.ACUTE, Math.Min(x1, x2), Math.Max(y1, y2));
                }
                else
                {
                    //钝角
                    Id = CreateId(ShapeType.OBTUSE, Math.Min(x1, x2), Math.Max(y1, y2));
                }
            }
            
        }
        
        public override bool Contains(double x,double y)
        {
            double e = GasBaseShape.E;
            if(IsVertical )
            {
                //竖线
                double y1, y2;
                if((Y1-Y2) > 0)
                {
                    y1 = Y2; ;
                    y2 = Y1;
                }
                else
                {
                    y1 = Y1;
                    y2 = Y2;
                }
                if (y < y1-e || y > y2+e)
                {
                    return false;
                }
                if(x-X1<=e && x - X1 >= -e)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            else if(IsHorizental)
            {
                //横线                
                double x1, x2;
                if ((X1 - X2) > 0)
                {
                    x1 = X2;
                    x2 = X1;
                }
                else
                {
                    x1 = X1;
                    x2 = X2;
                }
                if (x < x1 - e || x > x2 + e)
                {
                    return false;
                }
                if (y - Y1 <= e && y - Y1 >= -e)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            return false;
        }
        
        public bool CornerAt(GasLine otherLine)
        {
            //是否两条线段直角拐角相连
            if (IsHorizental)
            {
                if (!otherLine.IsVertical)
                {
                    return false;
                }
                if(IsSamePoint(X1,Y1,otherLine.X1,otherLine.Y1) || IsSamePoint(X1, Y1, otherLine.X2, otherLine.Y2)||
                    IsSamePoint(X2, Y2, otherLine.X1, otherLine.Y1) || IsSamePoint(X2, Y2, otherLine.X2, otherLine.Y2))
                {
                    return true;
                }
                else
                {
                    return false;
                }

            }else if (IsVertical)
            {
                if (!otherLine.IsHorizental)
                {
                    return false;
                }
                if (IsSamePoint(X1, Y1, otherLine.X1, otherLine.Y1) || IsSamePoint(X1, Y1, otherLine.X2, otherLine.Y2) ||
                    IsSamePoint(X2, Y2, otherLine.X1, otherLine.Y1) || IsSamePoint(X2, Y2, otherLine.X2, otherLine.Y2))
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            return false;
        }
        public bool ParallelAt(GasLine otherLine)
        {
            if (IsHorizental)
            {
                if (!otherLine.IsHorizental)
                {
                    return false;
                }
                if(Math.Abs(Y1-otherLine.Y1) <= E){
                    return false;//重合的不叫平行
                }
                else
                {
                    double xMinSpace = Math.Abs(Math.Min(X1, X2) - Math.Min(otherLine.X1, otherLine.X2));
                    double xMaxSpace= Math.Abs(Math.Max(X1, X2) - Math.Max(otherLine.X1, otherLine.X2));
                    if(xMinSpace<=E && xMaxSpace <= E)
                    {
                        return true;
                    }
                    else
                    {
                        return false;
                    }
                }

            }
            else if(IsVertical)
            {
                if (!otherLine.IsVertical)
                {
                    return false;
                }
                if (Math.Abs(X1 - otherLine.X1) <= E)
                {
                    return false;//重合的不叫平行
                }
                else
                {
                    double yMinSpace = Math.Abs(Math.Min(Y1, Y2) - Math.Min(otherLine.Y1, otherLine.Y2));
                    double yMaxSpace = Math.Abs(Math.Max(Y1, Y2) - Math.Max(otherLine.Y1, otherLine.Y2));
                    if (yMinSpace <= E && yMaxSpace <= E)
                    {
                        return true;
                    }
                    else
                    {
                        return false;
                    }
                }

            }
            return false;
        }
        public override void Move(double x, double y)
        {
            X1 = X1 + x;
            X2 = X2 + x;
            Y1 = Y1 + y;
            Y2 = Y2 + y;
        }

    }

}