c# 根据nc程序绘制图形
时间: 2023-07-06 15:26:15 浏览: 141
根据 NC(Numerical Control,数控)程序绘制图形需要进行以下步骤:
1. 读取 NC 文件并解析出加工路径信息。
2. 将加工路径信息转换为几何对象(如直线、圆弧等)。
3. 根据几何对象绘制图形。
在 C# 中,可以使用第三方库来实现这些步骤。以下是一个使用 Autodesk.AutoCAD.Geometry 库实现的简单示例:
```csharp
using System;
using System.Collections.Generic;
using System.IO;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace NCViewer
{
public class Commands
{
[CommandMethod("NCViewer")]
public void NCViewer()
{
// 打开 NC 文件
string fileName = "test.nc";
List<string> lines = new List<string>();
using (StreamReader reader = new StreamReader(fileName))
{
string line;
while ((line = reader.ReadLine()) != null)
{
lines.Add(line);
}
}
// 解析 NC 文件
List<Entity> entities = new List<Entity>();
foreach (string line in lines)
{
string[] parts = line.Split(' ');
if (parts[0] == "G01")
{
// 直线
Point3d start = new Point3d(double.Parse(parts[1]), double.Parse(parts[2]), 0);
Point3d end = new Point3d(double.Parse(parts[3]), double.Parse(parts[4]), 0);
entities.Add(new Line(start, end));
}
else if (parts[0] == "G02" || parts[0] == "G03")
{
// 圆弧
Point3d start = new Point3d(double.Parse(parts[1]), double.Parse(parts[2]), 0);
Point3d end = new Point3d(double.Parse(parts[3]), double.Parse(parts[4]), 0);
Point3d center = new Point3d(double.Parse(parts[5]), double.Parse(parts[6]), 0);
Vector3d normal = new Vector3d(0, 0, 1);
if (parts.Length > 7)
{
normal = new Vector3d(double.Parse(parts[7]), double.Parse(parts[8]), double.Parse(parts[9]));
}
double radius = center.DistanceTo(start);
double startAngle = Vector3d.AngleBetween(start - center, new Vector3d(1, 0, 0));
double endAngle = Vector3d.AngleBetween(end - center, new Vector3d(1, 0, 0));
if (parts[0] == "G02")
{
entities.Add(new Arc(center, normal, radius, startAngle, endAngle));
}
else
{
entities.Add(new Arc(center, normal, radius, startAngle, endAngle - 360));
}
}
}
// 绘制图形
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
using (Transaction tr = db.TransactionManager.StartTransaction())
{
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (Entity entity in entities)
{
btr.AppendEntity(entity);
tr.AddNewlyCreatedDBObject(entity, true);
}
tr.Commit();
}
ed.Regen();
}
}
}
```
在上面的示例中,我们首先使用 StreamReader 类读取 NC 文件,并解析出加工路径信息。然后,我们将加工路径信息转换为几何对象,并使用 Transaction 类将几何对象添加到 AutoCAD 文档中。注意,这里我们使用的是 Transaction 类来管理几何对象的添加,这是因为在 AutoCAD 中,所有的操作都必须在事务的管理下进行。
这只是一个简单的示例,实际应用中可能还需要考虑更多的情况,如加工速度、刀具半径、切削深度等因素对绘图的影响。