using OpenTK.GLControl;
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using OpenTK.Graphics.OpenGL;
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using OpenTK.Mathematics;
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using System.Collections.Immutable;
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using System.Transactions;
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using System.Windows.Forms;
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namespace Yw.WinFrmUI.Hydro
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{
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/// <summary>
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///
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/// </summary>
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public partial class Drawer2d : UserControl
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{
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/// <summary>
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///
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/// </summary>
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public Drawer2d()
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{
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InitializeComponent();
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this.glControl1.Load += glControl_Load;
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this.glControl1.Paint += glControl_Paint;
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this.glControl1.Resize += glControl_Resize;
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this.glControl1.MouseWheel += OnMouseWheel;
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this.glControl1.MouseDown += OnMouseDown;
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this.glControl1.MouseUp += OnMouseUp;
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this.glControl1.MouseMove += OnMouseMove;
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}
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private NetworkL3d _nw = null;
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private Ortho2dCamera _orthoHelper = null;
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/// <summary>
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/// 初始化管网
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/// </summary>
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public void InitialNetwork(NetworkL3d nw)
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{
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_nw = nw;
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var pts = _nw.Nodes.Select(x => new Vector3(x.Position.X, x.Position.Y, x.Position.Z)).ToList();
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_orthoHelper = new Ortho2dCamera();
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_orthoHelper.Initial(pts);
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}
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//加载事件
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private void glControl_Load(object sender, EventArgs e)
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{
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GL.ClearColor(Color.White); // 背景颜色
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GL.Enable(EnableCap.DepthTest);//深度测试
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GL.Enable(EnableCap.PointSmooth);//启用点平滑
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GL.Hint(HintTarget.PointSmoothHint, HintMode.Nicest);
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GL.Enable(EnableCap.LineSmooth);//启用线平滑
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GL.Hint(HintTarget.LineSmoothHint, HintMode.Nicest);
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GL.PointSize(5);
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GL.LineWidth(3);
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ResizeGL();
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}
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// 尺寸改变
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private void glControl_Resize(object sender, EventArgs e)
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{
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ResizeGL();
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}
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// 绘制
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private void glControl_Paint(object sender, PaintEventArgs e)
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{
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RenderGL();
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}
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//获取节点
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private void DrawNodes()
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{
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if (_nw == null)
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{
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return;
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}
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GL.PointSize(5f);
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GL.Begin(PrimitiveType.Points);
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foreach (NodeL3d node in _nw.Nodes)
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{
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// 根据高度设置不同颜色
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GL.Color3(Color.Red);
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GL.Vertex3(node.Position.X, node.Position.Y, node.Position.Z);
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}
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GL.End();
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}
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//绘制管段
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private void DrawLinks()
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{
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GL.LineWidth(2.5f);
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GL.Begin(PrimitiveType.Lines);
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GL.Color3(Color.Blue); // 管道颜色
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foreach (var link in _nw.Links)
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{
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// 绘制管道起点和终点
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GL.Vertex3(link.StartPosition.X, link.StartPosition.Y, link.StartPosition.Z);
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GL.Vertex3(link.EndPosition.X, link.EndPosition.Y, link.EndPosition.Z);
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}
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GL.End();
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}
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//绘制坐标
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private void DrawAxes()
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{
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GL.Begin(PrimitiveType.Lines);
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// X轴（红）
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GL.Color3(Color.Red);
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GL.Vertex3(0, 0, 0);
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GL.Vertex3(1000, 0, 0);
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// Y轴（绿）
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GL.Color3(Color.Green);
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GL.Vertex3(0, 0, 0);
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GL.Vertex3(0, 1000, 0);
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// Z轴（蓝）
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GL.Color3(Color.Blue);
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GL.Vertex3(0, 0, 0);
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GL.Vertex3(0, 0, 100);
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GL.End();
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}
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// 渲染
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private void RenderGL()
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{
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if (_nw == null)
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{
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return;
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}
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this.glControl1.MakeCurrent();
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GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
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//投影矩阵
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GL.MatrixMode(MatrixMode.Projection);
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var projectionMatrix = _orthoHelper.ProjectionMatrix;
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GL.LoadMatrix(ref projectionMatrix);
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//视图矩阵
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GL.MatrixMode(MatrixMode.Modelview);
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var viewMatrix = _orthoHelper.ViewMatrix;
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GL.LoadMatrix(ref viewMatrix);
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//模型矩阵
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GL.MatrixMode(MatrixMode.Modelview);
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var modelMatrix = _orthoHelper.ModelMatrix;
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GL.LoadMatrix(ref modelMatrix);
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// 先旋转后平移
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GL.Translate(_orthoHelper.Translation);
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GL.Rotate(_orthoHelper.Rotation.X, Vector3.UnitX);
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GL.Rotate(_orthoHelper.Rotation.Y, Vector3.UnitY);
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GL.Rotate(_orthoHelper.Rotation.Z, Vector3.UnitZ);
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DrawLinks();
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DrawNodes();
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DrawAxes();
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this.glControl1.SwapBuffers();
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}
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// 调整大小
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private void ResizeGL()
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{
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this.glControl1.MakeCurrent();
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_orthoHelper.UpdateViewport(this.glControl1.Width, this.glControl1.Height);
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_orthoHelper.UpdateModelMatrix();
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_orthoHelper.UpdateViewMatrix();
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_orthoHelper.UpdateProjectionMatrix();
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this.glControl1.Invalidate();
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}
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#region 鼠标交互
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//鼠标滚轮
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private void OnMouseWheel(object sender, MouseEventArgs e)
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{
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_orthoHelper?.HandleMouseWheel(this.glControl1, e);
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}
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// 鼠标按下
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private void OnMouseDown(object sender, MouseEventArgs e)
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{
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_orthoHelper?.HandleMouseDown(this.glControl1, e);
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}
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//鼠标弹起
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private void OnMouseUp(object sender, MouseEventArgs e)
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{
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_orthoHelper?.HandleMouseUp(this.glControl1, e);
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}
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//鼠标移动
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private void OnMouseMove(object sender, MouseEventArgs e)
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{
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_orthoHelper?.HandleMouseMove(this.glControl1, e);
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}
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#endregion
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}
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}
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