NetDxf 开发笔记-01

netdxf介绍github库

https://github.com/haplokuon/netDxf

netDxf是一个.net库，用C语言编程，用于读取和写入AutoCAD DXF文件。它支持文本和二进制格式的AutoCad2000、AutoCad2004、AutoCad2007、AutoCad2010、AutoCad2013和AutoCAD2018DXF数据库版本。
这个库很容易使用，我尽量使过程简单明了，例如，您不需要用图层、样式或线型定义填充表格部分。每次添加新项时，DxfDocument都会处理这个问题。

 

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

public static void Main() {     // your DXF file name     string file = "sample.dxf";       // create a new document, by default it will create an AutoCad2000 DXF version     DxfDocument doc = new DxfDocument();     // an entity     Line entity = new Line(new Vector2(5, 5), new Vector2(10, 5));     // add your entities here     doc.AddEntity(entity);     // save to file     doc.Save(file);       // this check is optional but recommended before loading a DXF file     DxfVersion dxfVersion = DxfDocument.CheckDxfFileVersion(file);     // netDxf is only compatible with AutoCad2000 and higher DXF versions     if (dxfVersion < DxfVersion.AutoCad2000) return;     // load file     DxfDocument loaded = DxfDocument.Load(file); }

　　支持的实体

 

• 3dFace
• Arc
• Circle
• Dimensions (aligned, linear, radial, diametric, 3 point angular, 2 line angular, and ordinate)
• Ellipse
• Hatch (including Gradient patterns)
• Image
• Insert (block references and attributes)
• Leader
• Line
• LwPolyline (light weight polyline)
• Mesh
• MLine
• MText
• Point
• PolyfaceMesh
• Polyline
• Ray
• Shape
• Solid
• Spline
• Text
• Tolerance
• Trace
• Underlay (DGN, DWF, and PDF underlays)
• Wipeout
• XLine (aka construction line)

所有实体都可以分组。所有DXF对象都可能包含扩展数据信息。AutoCad表格图元将作为插入（块参照）导入。支持简单线型和复杂线型。库永远无法读取某些实体，如面域、曲面和三维实体，因为它们依赖于未记录的专有数据。