using PaintDotNet.Annotation.Enum;
using System.Collections.Generic;
using System.Drawing;

namespace PaintDotNet.Annotation.PhysicalPhaseAction
{
    /// <summary>
    /// 物相提取->定义物体->轮廓->椭圆
    /// </summary>
    public class DrawPPhasePolygon : DrawObject
    {
        /// <summary>
        /// 点集合
        /// </summary>
        public List<PointF> pointArray = new List<PointF>();
        /// <summary>
        /// 画笔
        /// </summary>
        private Pen pen = new Pen(Color.Blue, 2);

        public DrawPPhasePolygon(ISurfaceBox surfaceBox, int x, int y) : base()
        {
            this.objectType = DrawClass.PhaseExtraction;
            this.drawToolType = DrawToolType.PPhasePolygon;

            pointArray.Add(new Point(x, y));
            startPoint.X = x;
            startPoint.Y = y;
            this.rectangle.X = x;
            this.rectangle.Y = y;
        }

        public override void Draw(Graphics g)
        {
            if (HandleCount >= 3)
            {
                g.DrawPolygon(pen, pointArray.ToArray());
            }
        }

        /// <summary>
        /// Move handle to new pointscroll (resizing)
        /// </summary>
        /// <param name="pointscroll"></param>
        /// <param name="handleNumber"></param>
        public override void MoveHandleTo(Point point, int handleNumber)
        {
            float left = Rectangle.Left;
            float top = Rectangle.Top;
            float right = Rectangle.Right;
            float bottom = Rectangle.Bottom;

            switch (handleNumber)
            {
                case 1:
                    left = point.X;
                    top = point.Y;
                    break;
                case 2:
                    top = point.Y;
                    break;
                case 3:
                    right = point.X;
                    top = point.Y;
                    break;
                case 4:
                    right = point.X;
                    break;
                case 5:
                    right = point.X;
                    bottom = point.Y;
                    break;
                case 6:
                    bottom = point.Y;
                    break;
                case 7:
                    left = point.X;
                    bottom = point.Y;
                    break;
                case 8:
                    left = point.X;
                    break;
            }

            SetRectangle(left, top, right - left, bottom - top);
        }

        protected void SetRectangle(float x, float y, float width, float height)
        {
            this.rectangle.X = x;
            this.rectangle.Y = y;
            this.rectangle.Width = width;
            this.rectangle.Height = height;
        }

        public void AddPoint(Point point)
        {
            pointArray.Add(point);
        }

        internal void setNextPoint(Point p)
        {
            AddPoint(p);
            startPoint = endPoint;
            endPoint = p;
        }

        public override int HandleCount
        {
            get
            {
                return pointArray.Count;
            }
        }

        public override void DrawTracker(Graphics g)
        {

        }

        public override DrawObject Clone()
        {
            return null;
        }

        public override RectangleF GetBoundingBox()
        {
            return rectangle;
        }
    }
}