namespace Yw.WinFrmUI.HydroL2d
{
    /// <summary>
    /// 
    /// </summary>
    public partial class Network
    {

        /// <summary>
        /// 判断是否存在
        /// </summary>
        public bool IsExist(string id)
        {
            return _parters.Exists(x => x.Id == id);
        }

        /// <summary>
        /// 获取边界
        /// </summary>
        public RectangleF GetBounds()
        {
            var result = RectangleF.Empty;

            bool firstPass = true;
            foreach (var node in this.Nodes)
            {
                var rectf = new RectangleF(node.Position, SizeF.Empty);
                if (firstPass)
                {
                    result = rectf;
                    firstPass = false;
                }
                else
                {
                    result = RectangleF.Union(result, rectf);
                }
            }

            foreach (var link in this.Links)
            {
                foreach (var position in link.Positions)
                {
                    var rectf = new RectangleF(link.StartPosition, SizeF.Empty);
                    if (firstPass)
                    {
                        result = rectf;
                        firstPass = false;
                    }
                    else
                    {
                        result = RectangleF.Union(result, rectf);
                    }
                }
            }

            return result;
        }

        /// <summary>
        /// 绘制
        /// </summary>
        public void Draw(Graphics g)
        {
            foreach (var link in this.Links)
            {
                link.Draw(g);
            }
            foreach (var node in this.Nodes)
            {
                node.Draw(g);
            }
        }

        /// <summary>
        /// 绘制
        /// </summary>
        /// <param name="g"></param>
        /// <param name="dispRectf">显示区域</param>
        public void Draw(Graphics g, RectangleF dispRectf)
        {
            foreach (var link in this.Links)
            {
                if (link.Intersect(dispRectf))
                {
                    link.Draw(g);
                }

            }
            foreach (var node in this.Nodes)
            {
                if (node.Intersect(dispRectf))
                {
                    node.Draw(g);
                }

            }
        }

        /// <summary>
        /// 选择
        /// </summary>
        public List<Parter> Select(PointF pt)
        {
            int i = 0;
            foreach (var node in this.Nodes)
            {
                node.Selected = node.Contains(pt);
                if (node.Selected)
                {
                    i++;
                }
            }

            if (i > 0)
            {
                this.Links.ForEach(x => x.Selected = false);
                return this.Nodes.Where(x => x.Selected).Select(x => x as Parter).ToList();
            }

            foreach (var link in this.Links)
            {
                link.Selected = link.Contains(pt);
            }
            return this.Links.Where(x => x.Selected).Select(x => x as Parter).ToList();
        }

        /// <summary>
        /// 悬停
        /// </summary>
        public List<Parter> Hover(PointF pt)
        {
            int i = 0;
            foreach (var node in this.Nodes)
            {
                node.Hovered = node.Contains(pt);
                if (node.Hovered)
                {
                    i++;
                }
            }

            if (i > 0)
            {
                this.Links.ForEach(x => x.Hovered = false);
                return this.Nodes.Where(x => x.Hovered).Select(x => x as Parter).ToList();
            }

            foreach (var link in this.Links)
            {
                link.Hovered = link.Contains(pt);
            }
            return this.Links.Where(x => x.Hovered).Select(x => x as Parter).ToList();
        }


    }
}