Metis_xctg/Annotation/BinaryAction/DrawBinaryChoisePolygon.cs

using PaintDotNet.Annotation.Enum;
using PaintDotNet.Annotation.Label;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace PaintDotNet.Annotation.Other
{
    /// <summary>
    /// 二值提取-交互操作-删除-多边形
    /// </summary>
    public class DrawBinaryChoisePolygon : DrawObject
    {
        public List<PointF> pointArray = new List<PointF>();

        public DrawBinaryChoisePolygon(ISurfaceBox surfaceBox, int x, int y) : base()
        {
            this.objectType = DrawClass.Interaction;
            this.drawToolType = DrawToolType.BinaryChoisePolygon;

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

        public override DrawObject Clone()
        {
            return null;
        }

        public override void Draw(Graphics g)
        {
            if (HandleCount >= 3)
            {
                g.SmoothingMode = SmoothingMode.AntiAlias;
                Color color = Color.Red;
                Pen pen = new Pen(color, PenWidth);
                int penWidth = 3;
                pen.DashStyle = DashStyle.Dot;
                pen.Width = penWidth;
                Color fillColor = Color.Transparent;
                SolidBrush fillBrush = new SolidBrush(fillColor);

                g.FillPolygon(fillBrush, pointArray.ToArray());

                g.DrawPolygon(pen, pointArray.ToArray());
                pen.Dispose();
                fillBrush.Dispose();
            }
        }

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

        public override RectangleF GetBoundingBox()
        {
            return rectangle;
        }

        /// <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;
        }
    }
}