using OpenTK.Graphics.OpenGL;
using OpenTK.Mathematics;

namespace Yw.WinFrmUI.Hydro
{
    /// <summary>
    /// 绘制2d辅助类
    /// </summary>
    internal class Draw2dHelper
    {
        /// <summary>
        /// 绘制节点
        /// </summary>
        public static void DrawNode(NodeL3d node)
        {
            var size = node.Style2d.Normal.Radiu * 2;
            var color = node.Style2d.Normal.Color;
            if (node.IsSelected)
            {
                size = node.Style2d.Selected.Radiu * 2;
                color = node.Style2d.Selected.Color;
            }
            if (node.IsHovered)
            {
                size = node.Style2d.Hovered.Radiu * 2;
                color = node.Style2d.Hovered.Color;
            }
            DrawPoint(size, color, node.Position);
        }


        /// <summary>
        /// 绘制点
        /// </summary>
        /// <param name="size">点大小</param>
        /// <param name="color">点颜色</param>
        /// <param name="pt">点位置</param>
        public static void DrawPoint(float size, Color color, PointL3d pt)
        {
            GL.PointSize(size);
            GL.Begin(PrimitiveType.Points);
            GL.Color3(color);
            GL.Vertex3(pt.X, pt.Y, pt.Z);
            GL.End();
        }

        /// <summary>
        /// 绘制点
        /// </summary>
        /// <param name="size">点大小</param> 
        /// <param name="color">点颜色</param>
        /// <param name="pt">点位置</param>
        public static void DrawPoint(float size, Color color, Vector3 pt)
        {
            GL.PointSize(size);
            GL.Begin(PrimitiveType.Points);
            GL.Color3(color);
            GL.Vertex3(pt.X, pt.Y, pt.Z);
            GL.End();
        }

        /// <summary>
        /// 绘制线
        /// </summary>
        /// <param name="width">线宽</param>
        /// <param name="color">线色</param>
        /// <param name="spt">开始点</param>
        /// <param name="ept">结束点</param>
        public static void DrawLine(float width, Color color, PointL3d spt, PointL3d ept)
        {
            GL.LineWidth(width);
            GL.Begin(PrimitiveType.Lines);
            GL.Color3(color);
            GL.Vertex3(spt.X, spt.Y, spt.Z);
            GL.Vertex3(ept.X, ept.Y, ept.Z);
            GL.End();
        }

        /// <summary>
        /// 绘制
        /// </summary>
        /// <param name="width">线宽</param>
        /// <param name="color">线色</param>
        /// <param name="spt">开始点</param>
        /// <param name="ept">结束点</param>
        public static void DrawLine(float width, Color color, Vector3 spt, Vector3 ept)
        {
            GL.LineWidth(width);
            GL.Begin(PrimitiveType.Lines);
            GL.Color3(color);
            GL.Vertex3(spt.X, spt.Y, spt.Z);
            GL.Vertex3(ept.X, ept.Y, ept.Z);
            GL.End();
        }

    }

}