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.BlockShaps
{
    public class BlockEllipse : BaseShap
    {

        public BlockEllipse(FrameworkElement shap) : base(shap)
        {
        }

        public override void CopyBlock()
        {
            Path path = shapeitem as Path;
            
            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            shapeitem.Tag = new Point() { X = ellipseGeometry.Center.X, Y = ellipseGeometry.Center.Y }; //存储当前图形坐标

            ShapDataContext shapDataContext = shapeitem.DataContext as ShapDataContext;

            EllipseGeometry geometry = new EllipseGeometry();
            geometry.Center = new Point() { X = ellipseGeometry.Center.X/ shapDataContext.ShapScaleRate, Y = ellipseGeometry.Center.Y/ shapDataContext.ShapScaleRate };

            geometry.RadiusX = ellipseGeometry.RadiusX / shapDataContext.ShapScaleRate;
            geometry.RadiusY = ellipseGeometry.RadiusY / shapDataContext.ShapScaleRate;

            shapDataContext.OringLocation = geometry;
        }

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

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

            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            Vector3 center = new Vector3() { X = ellipseGeometry.Center.X * m_ScaleRale, Y = -ellipseGeometry.Center.Y * m_ScaleRale };
            if (ellipseGeometry.RadiusX == ellipseGeometry.RadiusY) // 圆
            {
                netDxf.Entities.Circle circle = new netDxf.Entities.Circle(center, ellipseGeometry.RadiusX * m_ScaleRale);
                circle.Layer = layer;
                dxf.AddEntity(circle);
            }
            else //椭圆
            {
                netDxf.Entities.Ellipse ellipse = new netDxf.Entities.Ellipse(center, ellipseGeometry.RadiusX * m_ScaleRale, ellipseGeometry.RadiusY * m_ScaleRale);
                //ellipse.Rotation = 30;

                ellipse.Layer = layer;
                dxf.AddEntity(ellipse);
            }
        }

        public override List<Point> GetPoints()
        {
            List<Point> points = new List<Point>();
            Path path = shapeitem as Path;
            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;

            Point point = new Point();
            point.X = ellipseGeometry.Center.X - ellipseGeometry.RadiusX ;
            point.Y = ellipseGeometry.Center.Y + ellipseGeometry.RadiusY ;

            points.Add(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;

            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            Point p = (Point)shapeitem.Tag;


            if ((shapeitem.DataContext as ShapDataContext).IsDirection)
            {
                moveX = -moveX;
            }
            Point center = new Point() { X = p.X + moveX, Y = p.Y + moveY };
            ellipseGeometry.Center = center;

            

        }

        public override void MoveByX(double x)
        {

            Path path = shapeitem as Path;

            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            Point p = (Point)shapeitem.Tag;

            Point center = new Point() { X = p.X + x/m_ScaleRale, Y = ellipseGeometry.Center.Y };
            ellipseGeometry.Center = center;
        }

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

            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            Point p = (Point)shapeitem.Tag;

            Point center = new Point() { X = ellipseGeometry.Center.X, Y = p.Y-y / m_ScaleRale };
            ellipseGeometry.Center = center;
        }

        public override void ScaleBlock(double rate)
        {
            Path path = shapeitem as Path;

            EllipseGeometry ellipseGeometry = path.Data as EllipseGeometry;
            (shapeitem.DataContext as ShapDataContext).ShapScaleRate = rate;

            EllipseGeometry ellipseGeometry1 = (shapeitem.DataContext as ShapDataContext).OringLocation as EllipseGeometry;  //path.Data as EllipseGeometry;
            Point p = ellipseGeometry1.Center;

            Point center = new Point() { X = p.X * rate, Y = p.Y *rate };
            ellipseGeometry.Center = center;
            ellipseGeometry.RadiusX = ellipseGeometry1.RadiusX * rate;
            ellipseGeometry.RadiusY = ellipseGeometry1.RadiusY * rate;


        }
    }
}