using DevExpress.XtraBars.Docking.Paint;
using DevExpress.XtraEditors;
using SharpGL;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Media;

namespace Yw.WinFrmUI.HydroL3d
{
    public partial class NetworkPanel : DevExpress.XtraEditors.XtraUserControl
    {
        public NetworkPanel()
        {
            InitializeComponent();
        }

        protected Network _network = null;//管网
        protected BoundingBox3d _bounndingBox = null;//包围盒
        protected Point3d _center = null;//中心

        /// <summary>
        /// 是否初始化
        /// </summary>
        public bool Initialized => _network != null;


        /// <summary>
        /// 初始化
        /// </summary>
        public virtual void Initial(Network network)
        {
            _network = network;
            _bounndingBox = _network.GetBoundingBox();
            _center = _bounndingBox.GetCenter();
        }

        private void openGLControl1_OpenGLDraw(object sender, RenderEventArgs args)
        {
            if (_network == null)
            {
                return;
            }
            SharpGL.OpenGL gl = this.openGLControl1.OpenGL;
            //清除深度缓存 
            gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

            //重置当前指定的矩阵为单位矩阵,将当前的用户坐标系的原点移到了屏幕中心
            gl.LoadIdentity();

            gl.Translate(-_center.X, -_center.Y, -_bounndingBox.Max.Z);

            foreach (var pipe in _network.Pipes)
            {
                var startPosition = pipe.StartPosition;
                var endPosition = pipe.EndPosition;
                gl.Begin(OpenGL.GL_LINES);
                gl.Color(1.0f, 1.0f, 1.0f);
                gl.Vertex(startPosition.X, startPosition.Y, startPosition.Z);//左顶点
                gl.Vertex(endPosition.X, endPosition.Y, endPosition.Z);//右顶点
                gl.End();
            }

            //坐标轴变换位置到(0.0f, 0.0f, -5.0f)，这样我们的坐标轴就相当于往屏幕内走5个单位
            //gl.Translate(0.0f, 0.0f, -5.0f);

            //rotation_X += 1f;
            //gl.Rotate(rotation_X, 1.0f, 0.0f, 0.0f);//rotationX:角度
            //rotation_Y += 1f;
            //gl.Rotate(rotation_Y, 0.0f, 1.0f, 0.0f);//rotationY:角度
            //rotation_Z += 1f;
            //gl.Rotate(rotation_Z, 0.0f, 0.0f, 1.0f);//rotationZ:角度

            //#region 点到线
            //gl.Begin(OpenGL.GL_LINES);
            //gl.Color(1.0f, 1.0f, 1.0f);
            //gl.Vertex(-2.0f, 0.0f, 0.0f);//左顶点
            //gl.Vertex(2.0f, 2.0f, 0.0f);//右顶点
            //gl.End();
            //#endregion
            //#region 线成面(三角形)
            //gl.Begin(OpenGL.GL_TRIANGLES);//第一个面
            //gl.Color(1.0f, 0.0f, 0.0f);
            //gl.Vertex(0.0f, 1f, 0.0f);//顶点
            //gl.Color(0.0f, 1.0f, 0.0f);
            //gl.Vertex(-1.0f, -1.0f, 0.0f);//左顶点 
            //gl.Color(0.0f, 0.0f, 1.0f);
            //gl.Vertex(1.0f, -1.0f, 0.0f);//右顶点
            //gl.End();
            //#endregion
            //#region 面组合成体
            //gl.Begin(OpenGL.GL_TRIANGLES);//第二个面
            //gl.Color(1.0f, 1.0f, 1.0f);
            //gl.Vertex(0.0f, 0.0f, -2.0f);//第四个点
            //gl.Color(0.0f, 1.0f, 0.0f);
            //gl.Vertex(-1.0f, -1.0f, 0.0f);//左顶点 
            //gl.Color(0.0f, 0.0f, 1.0f);
            //gl.Vertex(1.0f, -1.0f, 0.0f);//右顶点
            //gl.End();
            //gl.Begin(OpenGL.GL_TRIANGLES);//第三个面
            //gl.Color(1.0f, 1.0f, 1.0f);
            //gl.Vertex(0.0f, 0.0f, -2.0f);//第四个点
            //gl.Color(0.0f, 1.0f, 0.0f);
            //gl.Vertex(-1.0f, -1.0f, 0.0f);//左顶点 
            //gl.Color(1.0f, 0.0f, 0.0f);
            //gl.Vertex(0.0f, 1f, 0.0f);//顶点
            //gl.End();
            //gl.Begin(OpenGL.GL_TRIANGLES);//第四个面
            //gl.Color(1.0f, 1.0f, 1.0f);
            //gl.Vertex(0.0f, 0.0f, -2.0f);//第四个点
            //gl.Color(0.0f, 0.0f, 1.0f);
            //gl.Vertex(1.0f, -1.0f, 0.0f);//右顶点
            //gl.Color(1.0f, 0.0f, 0.0f);
            //gl.Vertex(0.0f, 1f, 0.0f);//顶点
            //gl.End();
            //#endregion

            gl.Flush();   //强制刷新

        }

        private void openGLControl1_OpenGLInitialized(object sender, EventArgs e)
        {
            OpenGL gl = openGLControl1.OpenGL;
            gl.ClearColor(0, 0, 0, 0);
        }


        private void openGLControl1_Resize(object sender, EventArgs e)
        {
            if (_network == null)
            {
                return;
            }
            OpenGL gl = openGLControl1.OpenGL;

            // 设置当前矩阵模式,对投影矩阵应用随后的矩阵操作
            gl.MatrixMode(OpenGL.GL_PROJECTION);

            // 重置当前指定的矩阵为单位矩阵,将当前的用户坐标系的原点移到了屏幕中心
            gl.LoadIdentity();

            // 创建透视投影变换
            //gl.Perspective(30.0f, (double)Width / (double)Height, 5, 100);
            gl.Perspective(150, (double)Width / (double)Height, 5, _bounndingBox.Max.Z);

            // 视点变换
            //gl.LookAt(0, 5, 0, 0, 0, 0, 0, 1, 0);
            gl.LookAt(_center.X, _center.Y, 0, _center.X, _center.Y, _center.Z, 0, 1, 0);

            // 设置当前矩阵为模型视图矩阵
            gl.MatrixMode(OpenGL.GL_MODELVIEW);

        }
    }
}