NetDxf 開發筆記-01

netdxf介紹github庫

https://github.com/haplokuon/netDxf

netDxf是一個.net庫，用C語言編程，用於讀取和寫入AutoCAD DXF文件。它支持文本和二進制格式的AutoCad2000、AutoCad2004、AutoCad2007、AutoCad2010、AutoCad2013和AutoCAD2018DXF數據庫版本。
這個庫很容易使用，我盡量使過程簡單明了，例如，您不需要用圖層、樣式或線型定義填充表格部分。每次添加新項時，DxfDocument都會處理這個問題。

 

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);
}

　　支持的實體

 

• 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)

所有實體都可以分組。所有DXF對象都可能包含擴展數據信息。AutoCad表格圖元將作為插入（塊參照）導入。支持簡單線型和復雜線型。庫永遠無法讀取某些實體，如面域、曲面和三維實體，因為它們依賴於未記錄的專有數據。