using Yw.Untity;

namespace Yw.WinFrmUI.HydroL3d
{
    public partial class NetworkPanel : DevExpress.XtraEditors.XtraUserControl
    {
        public NetworkPanel()
        {
            InitializeComponent();
            this.openGLControl1.MouseWheel += openGLControl1_MouseWheel;
            this.propertyGridControl1.CellValueChanged += PropertyGridControl1_CellValueChanged;
        }



        private Network _network = null;//管网
        private NetworkParas _paras = null;//参数
        private float _zoom = 1f;//缩放
        private float _rotationX = 0.0f;//x旋转角度
        private float _rotationY = 0.0f;//y旋转角度
        private float _viewPortX = 0f;//
        private float _viewPortY = 0f;//

        /// <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;
            _paras = _network.GetParas();
            InitialParas();
            this.propertyGridControl1.SelectedObject = _paras;
        }

        //初始化参数
        private void InitialParas()
        {
            _zoom = _paras.Scale.X;
            _rotationX = _paras.Rotation.X;
            _rotationY = _paras.Rotation.Y;
            _viewPortX = 0f;
            _viewPortY = 0f;
        }

        private void PropertyGridControl1_CellValueChanged(object sender, DevExpress.XtraVerticalGrid.Events.CellValueChangedEventArgs e)
        {
            InitialParas();
            this.openGLControl1.Refresh();
        }

        //OpenGL 初始化
        private void openGLControl1_OpenGLInitialized(object sender, EventArgs e)
        {
            OpenGL gl = openGLControl1.OpenGL;
            gl.ClearColor(214 / 255f, 224 / 255f, 235 / 255f, 0);
        }

        //OpenGL 绘制
        private void openGLControl1_OpenGLDraw(object sender, RenderEventArgs args)
        {
            if (!Initialized)
            {
                return;
            }
            OpenGL gl = openGLControl1.OpenGL;
            //启用深度测试
            gl.Enable(OpenGL.GL_DEPTH_TEST);

            //清除深度缓存 
            gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

            // 设置视口
            gl.Viewport((int)_viewPortX, (int)_viewPortY, this.openGLControl1.Width, this.openGLControl1.Height);

            // 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(_paras.Perspective.Fovy, _paras.Perspective.Aspect, _paras.Perspective.Near, _paras.Perspective.Far);
            //gl.LoadIdentity();
            //gl.Ortho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);

            gl.LookAt(_paras.LookAt.Eye.X, _paras.LookAt.Eye.Y, _paras.LookAt.Eye.Z,
    _paras.LookAt.Center.X, _paras.LookAt.Center.Y, _paras.LookAt.Center.Z,
    _paras.LookAt.Up.X, _paras.LookAt.Up.Y, _paras.LookAt.Up.Z);

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

            //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();





            //平移
            gl.Translate(_paras.Translation.X, _paras.Translation.Y, _paras.Translation.Z);


            //将z轴向上
            //gl.Rotate(90f, 1f, 0f, 0f);
            //旋转
            gl.Rotate(_rotationX, 1, 0, 0);
            gl.Rotate(_rotationY, 0, 1, 0);

            //缩放
            gl.Scale(_zoom, _zoom, _zoom);

            _network.Draw(gl);

            //float[] minCorner = { _paras.BoundingBox.Min.X, _paras.BoundingBox.Min.Y, _paras.BoundingBox.Min.Z };
            //float[] maxCorner = { _paras.BoundingBox.Max.X, _paras.BoundingBox.Max.Y, _paras.BoundingBox.Max.Z };

            //gl.Begin(OpenGL.GL_POINT);
            //gl.Vertex(minCorner[0], minCorner[1], minCorner[2]);
            //gl.End();

            //gl.Begin(OpenGL.GL_POINT);
            //gl.Vertex(maxCorner[0], maxCorner[1], maxCorner[2]);
            //gl.End();

            //gl.Begin(OpenGL.GL_LINE_LOOP);
            //// 绘制底面
            //gl.Vertex(minCorner[0], minCorner[1], minCorner[2]);
            //gl.Vertex(maxCorner[0], minCorner[1], minCorner[2]);
            //gl.Vertex(maxCorner[0], maxCorner[1], minCorner[2]);
            //gl.Vertex(minCorner[0], maxCorner[1], minCorner[2]);

            //// 绘制顶面
            //gl.Vertex(minCorner[0], minCorner[1], maxCorner[2]);
            //gl.Vertex(maxCorner[0], minCorner[1], maxCorner[2]);
            //gl.Vertex(maxCorner[0], maxCorner[1], maxCorner[2]);
            //gl.Vertex(minCorner[0], maxCorner[1], maxCorner[2]);

            //// 连接底面和顶面的边
            //gl.Vertex(minCorner[0], minCorner[1], minCorner[2]);
            //gl.Vertex(minCorner[0], minCorner[1], maxCorner[2]);
            //gl.Vertex(maxCorner[0], minCorner[1], minCorner[2]);
            //gl.Vertex(maxCorner[0], minCorner[1], maxCorner[2]);
            //gl.Vertex(maxCorner[0], maxCorner[1], minCorner[2]);
            //gl.Vertex(maxCorner[0], maxCorner[1], maxCorner[2]);
            //gl.Vertex(minCorner[0], maxCorner[1], minCorner[2]);
            //gl.Vertex(minCorner[0], maxCorner[1], maxCorner[2]);
            //gl.End();

            gl.Flush();   //强制刷新

        }

        //Resize
        private void openGLControl1_Resized(object sender, EventArgs e)
        {
            if (!Initialized)
            {
                return;
            }
            _paras.Perspective.Aspect = (float)this.openGLControl1.Width / (float)this.openGLControl1.Height;
            _viewPortX = 0f;
            _viewPortY = 0f;
        }

        #region 鼠标左键按下旋转

        /// <summary>
        /// 当鼠标左键按下时允许旋转
        /// </summary>
        [Browsable(true)]
        [Description("当鼠标左键按下时允许旋转")]
        [DefaultValue(true)]
        public bool AllowRotateWhenMouseLeftDown
        {
            get => _allowRotateWhenMouseLeftDown;
            set => _allowRotateWhenMouseLeftDown = value;
        }
        private bool _allowRotateWhenMouseLeftDown = true;

        protected bool _hasMouseLeftDown = false;//鼠标左键是否按下
        protected Point _mouseLeftDownRotatePoint;//鼠标左键按下旋转点 

        /// <summary>
        /// 判断鼠标左键是否按下
        /// </summary>
        protected virtual bool HasMouseLeftDown(MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                _hasMouseLeftDown = true;
                _mouseLeftDownRotatePoint = e.Location;
                return true;
            }
            return false;
        }

        /// <summary>
        /// 鼠标左键按下旋转
        /// </summary>
        protected virtual bool MouseLeftDownRotate(MouseEventArgs e)
        {
            if (_hasMouseLeftDown)
            {
                if (this.AllowRotateWhenMouseLeftDown)
                {
                    if (this.Initialized)
                    {
                        int deltaX = e.X - _mouseLeftDownRotatePoint.X;
                        int deltaY = e.Y - _mouseLeftDownRotatePoint.Y;

                        _rotationX += deltaY * 0.1f;
                        _rotationY += deltaX * 0.1f;

                        _mouseLeftDownRotatePoint = e.Location;
                        return true;
                    }
                }
            }
            return false;
        }

        /// <summary>
        /// 判断鼠标左键是否弹起
        /// </summary>
        protected virtual bool HasMouseLeftUp(MouseEventArgs e)
        {
            if (_hasMouseLeftDown)
            {
                _hasMouseLeftDown = false;
                return true;
            }
            return false;
        }

        #endregion

        #region 鼠标右键按下拖动

        /// <summary>
        /// 当鼠标右键按下时允许拖动
        /// </summary>
        [Browsable(true)]
        [Description("当鼠标右键按下时允许拖动")]
        [DefaultValue(true)]
        public bool AllowMoveWhenMouseRightDown
        {
            get => _allowMoveWhenMouseRightDown;
            set => _allowMoveWhenMouseRightDown = value;
        }
        private bool _allowMoveWhenMouseRightDown = true;

        protected bool _hasMouseRightDown = false;//鼠标右键是否按下
        protected Point _mouseRightDownMovePoint;//鼠标右键按下移动点

        /// <summary>
        /// 判断鼠标右键是否按下
        /// </summary>
        protected virtual bool HasMouseRightDown(MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                _hasMouseRightDown = true;
                _mouseRightDownMovePoint = e.Location;
                return true;
            }
            return false;
        }

        /// <summary>
        /// 鼠标右键按下移动
        /// </summary>
        protected virtual bool MouseRightDownMove(MouseEventArgs e)
        {
            if (_hasMouseRightDown)
            {
                if (this.AllowMoveWhenMouseRightDown)
                {
                    if (this.Initialized)
                    {
                        int deltaX = e.X - _mouseRightDownMovePoint.X;
                        int deltaY = e.Y - _mouseRightDownMovePoint.Y;

                        _viewPortX += deltaX;
                        _viewPortY -= deltaY;
                        _mouseRightDownMovePoint = e.Location;
                        return true;
                    }
                }
            }
            return false;
        }

        /// <summary>
        /// 判断鼠标左键是否弹起
        /// </summary>
        protected virtual bool HasMouseRightUp(MouseEventArgs e)
        {
            if (_hasMouseRightDown)
            {
                _hasMouseRightDown = false;
                return true;
            }
            return false;
        }

        #endregion

        #region 鼠标事件

        private void openGLControl1_MouseDown(object sender, MouseEventArgs e)
        {
            HasMouseLeftDown(e);
            HasMouseRightDown(e);
        }

        private void openGLControl1_MouseMove(object sender, MouseEventArgs e)
        {
            var list = this.openGLControl1.OpenGL.UnProject(e.X, e.Y, 0);
            this.labelControl1.Text = DoubleListHelper.ToString(list);
            var hasMouseLeftDownRotate = MouseLeftDownRotate(e);
            var hasMouseRightDownMove = MouseRightDownMove(e);
            if (hasMouseLeftDownRotate || hasMouseRightDownMove)
            {
                this.openGLControl1.Invalidate();
            }
        }

        private void openGLControl1_MouseUp(object sender, MouseEventArgs e)
        {
            var hasMouseLeftUp = HasMouseLeftUp(e);
            var hasMouseRightUp = HasMouseRightUp(e);
            if (hasMouseLeftUp || hasMouseRightUp)
            {
                this.openGLControl1.Invalidate();
            }
        }

        private void openGLControl1_MouseHover(object sender, EventArgs e)
        {
            if (!Initialized)
            {
                return;
            }
            var pt = this.openGLControl1.PointToClient(MousePosition);
            var list = this.openGLControl1.OpenGL.UnProject(pt.X, this.openGLControl1.Height - pt.Y, 0);
            var wpt = new Point3d(list[0], list[1], list[2]);
            var list1 = _network.Hover(wpt);
            if (list1 != null && list1.Count > 0)
            {

            }
        }

        private void openGLControl1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (!Initialized)
            {
                return;
            }
            if (e.Button == MouseButtons.Left)
            {
                InitialParas();
                this.openGLControl1.Invalidate();
            }
        }

        private void openGLControl1_MouseClick(object sender, MouseEventArgs e)
        {

        }

        private void openGLControl1_MouseWheel(object sender, MouseEventArgs e)
        {
            if (e.Delta > 0)
            {
                _zoom *= 1.1f;
            }
            else
            {
                _zoom /= 1.1f;
            }
            this.openGLControl1.Refresh();
        }

        #endregion
    }
}