LM-Middleware/HexcalMC/Base/SharpGLViewportControl.cs

using SharpGL;
using SharpGL.SceneGraph;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Telerik.WinControls.UI;

namespace HexcalMC.Base
{
	public partial class SharpGLViewportControl : UserControl
	{
		private readonly OpenGLControl openGLControl;
		private List<Point3D> pointCloud;

		public SharpGLViewportControl()
		{
			InitializeComponent();

			openGLControl = new OpenGLControl
			{
				Dock = DockStyle.Fill
			};

			Controls.Add(openGLControl);

			openGLControl.OpenGLInitialized += OpenGLControl_OpenGLInitialized;
			openGLControl.OpenGLDraw += OpenGLControl_OpenGLDraw;

			pointCloud = new List<Point3D>();
		}

		public void SetPointCloud(List<Point3D> points)
		{
			pointCloud = points;
			openGLControl.Invalidate();// 重绘
		}

		private void OpenGLControl_OpenGLInitialized(object sender, EventArgs e)
		{
			var gl = openGLControl.OpenGL;
			gl.Enable(OpenGL.GL_DEPTH_TEST);

			// 设置清除背景色为黑色
			gl.ClearColor(0.0f, 0.0f, 1.0f, 0.0f);
		}

		private void OpenGLControl_OpenGLDraw(object sender, RenderEventArgs args)
		{
			var gl = openGLControl.OpenGL;
			gl.Clear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);

			gl.LoadIdentity();

			gl.Begin(OpenGL.GL_POINTS);
			gl.Color(Color.White);

			foreach (var point in pointCloud)
			{
				// 设置点的颜色
				gl.Color(1.0f, 0.0f, 0.0f); // 红色

				// 设置点的大小
				gl.PointSize(5.0f); // 大小为5个单位
				gl.Vertex(point.X, point.Y, point.Z);
			}

			gl.End();
		}
	}
}