using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Shapes;
using netDxf;
using netDxf.Tables;

namespace MetroGauges.Controls
{
    public class BlockArc : BaseShap
    {
        public BlockArc(FrameworkElement shap) : base(shap)
        {
        }

        public override void CopyBlock()
        {
            Path path = shapeitem as Path;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            ArcSegment arcs = figure.Segments[0] as ArcSegment;

            ShapDataContext shapDataContext = path.DataContext as ShapDataContext;

            List<Point> ps = new List<Point>();
            ps.Add(new Point() { X = figure.StartPoint.X, Y = figure.StartPoint.Y }); //起点
            ps.Add(new Point() { X = arcs.Point.X, Y = arcs.Point.Y }); //终点
            ps.Add(new Point() { X = shapDataContext.Arc.Center.X, Y = shapDataContext.Arc.Center.Y }); //中心点

            shapeitem.Tag = ps; //存储当前图形坐标


            List<Point> ps1 = new List<Point>();
            ps1.Add(new Point() { X = figure.StartPoint.X / shapDataContext.ShapScaleRate, Y = figure.StartPoint.Y / shapDataContext.ShapScaleRate });
            ps1.Add(new Point() { X = arcs.Point.X/ shapDataContext.ShapScaleRate, Y = arcs.Point.Y/ shapDataContext.ShapScaleRate });
            ps1.Add(new Point() { X = shapDataContext.Arc.Center.X / shapDataContext.ShapScaleRate, Y = shapDataContext.Arc.Center.Y/ shapDataContext.ShapScaleRate });

            shapDataContext.OringLocation = ps1;


        }

        public override FrameworkElement DirectionShap(Point dirPoint)
        {
            throw new NotImplementedException();
        }

        public override void DrawDxfBlocks(DxfDocument dxf, Layer layer)
        {
            Path path = shapeitem as Path;
            PathGeometry pathGeometry = path.Data as PathGeometry;

            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            ArcSegment arcs = figure.Segments[0] as ArcSegment;

            //List<Point> ps= shapeitem.Tag as  List<Point>;

            //Point arcStartPt = figure.StartPoint;
            //Point arcEndPt = arcs.Point;
            //Point centerPoint = ps[2];

            //double startAngleInRadian = Math.Acos((arcStartPt.X  - centerPoint.X) / arcs.Size.Width );
            //double StartAngle = startAngleInRadian * 180 / Math.PI; //起始角度
            //double endAngleInRadian = Math.Asin((arcEndPt.Y  - centerPoint.Y ) / arcs.Size.Width );
            //double EndAngle = endAngleInRadian * 180 / Math.PI; //结束角度


            //Vector3 center = new Vector3(centerPoint.X, centerPoint.Y, 0);
            //double radius = arcs.Size.Width * m_ScaleRale;
            //netDxf.Entities.Arc arc = new netDxf.Entities.Arc(center, radius, StartAngle, EndAngle);

            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;
            netDxf.Entities.Arc arc = shapDataContext.Arc;

            Vector3 center = new Vector3() { X = arc.Center.X * m_ScaleRale, Y = -arc.Center.Y * m_ScaleRale };
            netDxf.Entities.Arc expArc = new netDxf.Entities.Arc(center, arc.Radius * m_ScaleRale, arc.StartAngle, arc.EndAngle) ;
            
            expArc.Layer = layer;
            dxf.AddEntity(expArc);
        }

        public override List<Point> GetPoints()
        {
            List<Point> points = new List<Point>();

            Path path = shapeitem as Path;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            ArcSegment arcs = figure.Segments[0] as ArcSegment;

            points.Add(figure.StartPoint);
            points.Add(arcs.Point);

            return points;
        }

        public override void MoveBlock( Point currentPoint, System.Windows.Point dragPoint)
        {
            double moveX = currentPoint.X - dragPoint.X;
            double moveY = currentPoint.Y - dragPoint.Y;

            Path path = shapeitem as Path;

            List<Point> ps = (List<Point>)shapeitem.Tag;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;


            if ((shapeitem.DataContext as ShapDataContext).IsDirection)
            {
                moveX = -moveX;
            }

            figure.StartPoint = new Point() { X = ps[0].X + moveX, Y = ps[0].Y + moveY }; //起点
            ArcSegment arcs = figure.Segments[0] as ArcSegment;
            arcs.Point = new Point() { X = ps[1].X + moveX, Y = ps[1].Y + moveY }; //结束点

            //计算dxf arc 原来的中心点,跟着移动坐标
            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;
            netDxf.Entities.Arc arc = shapDataContext.Arc;
            arc.Center = new Vector3() { X = ps[2].X + moveX, Y = ps[2].Y + moveY };  //中心点
        }

        public override void MoveByX(double x)
        {
            Path path = shapeitem as Path;

            List<Point> ps = (List<Point>)shapeitem.Tag;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            figure.StartPoint = new Point() { X = ps[0].X + x/m_ScaleRale, Y = figure.StartPoint.Y }; //起点
            ArcSegment arcs = figure.Segments[0] as ArcSegment;
            arcs.Point = new Point() { X = ps[1].X + x/m_ScaleRale, Y = arcs.Point.Y }; //结束点

            //计算dxf arc 原来的中心点,跟着移动坐标
            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;
            netDxf.Entities.Arc arc = shapDataContext.Arc;
            arc.Center = new Vector3() { X = ps[2].X + x/m_ScaleRale, Y = arc.Center.Y };
        }

        public override void MoveByY(double y)
        {
            Path path = shapeitem as Path;

            List<Point> ps = (List<Point>)shapeitem.Tag;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            figure.StartPoint = new Point() { X = figure.StartPoint.X, Y = ps[0].Y - y/m_ScaleRale }; //起点
            ArcSegment arcs = figure.Segments[0] as ArcSegment;
            arcs.Point = new Point() { X = arcs.Point.X, Y = ps[1].Y -y/m_ScaleRale }; //结束点

            //计算dxf arc 原来的中心点,跟着移动坐标
            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;
            netDxf.Entities.Arc arc = shapDataContext.Arc;
            arc.Center = new Vector3() { X = arc.Center.X, Y = ps[2].Y - y/m_ScaleRale };
        }

        public override void ScaleBlock(double rate)
        {

            Path path = shapeitem as Path;
            List<Point> ps0 = (List<Point>)shapeitem.Tag;

            (shapeitem.DataContext as ShapDataContext).ShapScaleRate = rate;
            List<Point> ps = (List<Point>)(shapeitem.DataContext as ShapDataContext).OringLocation;

            PathGeometry pathGeometry = path.Data as PathGeometry;
            PathFigure figure = pathGeometry.Figures[0] as PathFigure;
            Point StartPoint = new Point() { X = ps[0].X * rate, Y = ps[0].Y * rate };
            figure.StartPoint = new Point() { X = ps[0].X * rate, Y = ps[0].Y * rate }; //起点
            ArcSegment arcs = figure.Segments[0] as ArcSegment;
            Point endPoint = new Point() { X = ps[1].X * rate, Y = ps[1].Y * rate };
            arcs.Point = new Point() { X = ps[1].X * rate, Y = ps[1].Y * rate }; //结束点

            //arcs.Size = new Size() { Width = arcs.Size.Width * rate, Height = arcs.Size.Height * rate };

            


            //计算dxf arc 原来的中心点,跟着移动坐标
            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;
            netDxf.Entities.Arc arc = shapDataContext.Arc;
            arc.Center = new Vector3() { X = ps[2].X * rate, Y = ps[2].Y * rate }; //中心点
            arc.Radius = arcs.Size.Width * rate;
           

            ps0[0] = StartPoint;
            ps0[1] = endPoint;
            ps0[2] = new Point() { X = ps[2].X * rate, Y = ps[2].Y * rate };
        }
    }
}