标签：动态 未来 部分 主程序 action 修改 size tab write
因工作需要，实现脱离CAD环境下对DWG图纸的操作，研究Teigha的使用。本文是对研究内容做的记录。目前Teigha网上资料不是很多，还在学习中。
我使用的是Teigha 4.0 .net 版本，VS2018环境，.NET Framework 4框架。
1、Teigha下载之后是一堆动态链接库，解压放到项目文件bin/Debug文件夹下即可。
2、”添加引用“通过浏览，将Debug文件下的"TD_Mgd_4.00_10.dll"和“TD_MgdBrep_4.00_10.dll"两个文件加入到引用中。
3、在主程序中添加using。 会用到的会有如下几个。
using Teigha.DatabaseServices; using Teigha.Runtime; using Teigha.Geometry; using Teigha.GraphicsInterface; using Teigha.GraphicsSystem;
作为练习和研究，先介绍一下简单的操作。对于Teigha的应用，目的主要是为了对一份cad文件进行重新绘制，主要在第4小节介绍。
Database db = new Database();
using (var tr = db.TransactionManager.StartTransaction())
{
Point3d pt1 = new Point3d(0, 0, 0);
string str = "AAA";
DBText txt = new DBText();
txt.Position = pt1;
txt.TextString= str;
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
btr.AppendEntity(txt);
tr.AddNewlyCreatedDBObject(txt, true);
tr.Commit();
db.SaveAs("E:\\vswork\\CADfile\\text01.dwg", DwgVersion.AC1800);
db.Dispose();
}
using (Services svc = new Services())
{
Database db = new Database();
using (var tr = db.TransactionManager.StartTransaction())
{
Point3d pt1 = new Point3d(0, 0, 0);
string str = "AAA";
DBText txt = new DBText();
txt.Position = pt1;
txt.TextString= str;
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
btr.AppendEntity(txt);
tr.AddNewlyCreatedDBObject(txt, true);
tr.Commit();
db.SaveAs("E:\\vswork\\CADfile\\test01.dwg", DwgVersion.AC1800);
db.Dispose();
}
}
using (Services svc = new Services())
{
Database db = new Database(false,false);
db.ReadDwgFile(fname, System.IO.FileShare.Read,false , null);
using (var tr = db.TransactionManager.StartTransaction())
{
Point3d pt1 = new Point3d(0, 0, 0);
double rad = 1000;
Circle cir = new Circle();
cir.Center = pt1;
cir.Radius = rad;
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
btr.AppendEntity(cir);
tr.AddNewlyCreatedDBObject(cir, true);
tr.Commit();
db.SaveAs("E:\\vswork\\CADfile\\text01.dwg", DwgVersion.AC1800);
db.Dispose();
}
}
Circle cir=new Circle() 创建一个圆对象
cir.Center 圆的圆心坐标属性
cir.Radius 圆的半径属性
其它操作同第一节
using (Services ser = new Services())
{
string fname = "E:\\vswork\\CADfile\\text01.dwg";
Database db = new Database(false,false);
db.ReadDwgFile(fname,System.IO.FileShare.Read,false,null);
using (var trans = db.TransactionManager.StartTransaction())
{
BlockTableRecord btrec = (BlockTableRecord)trans.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId objid in btrec)
{
Entity ent = trans.GetObject(objid,OpenMode.ForWrite) as Entity;
if (ent.GetType().Name == "DBText")
{
DBText txt = (DBText)ent;
if (txt.TextString == "aaa")
{
txt.TextString = "bbb";
}
}
}
trans.Commit();
}
db.Save();
db.Dispose();
}
以上三小节是对Teigha的基本操作的熟悉。接下来我需要实际写我的CAD文件。目的是在不变图元的基础上，将可变图元根据参数重新绘制在CAD文件中，保存为DWG格式。
4.1首先我会建立一个类库文件，保存需要变动的图元的坐标参数。
//钢筋预制伸出部分
public static double[,] xlsm = new double[9, 5]
{
{0,0,23.53738644,0,0.75 },
{25.53738644,0,49.07477288,0,0.75 },
{0,-70,23.53738644,-70 ,0.75},
{25.53738644,-70,49.07477288,-70 ,0.75},
{0,-140,23.53738644,-140,0.75},
{25.53738644,-140,49.07477288,-140,0.75 },
{1,2,48.07477288,2 ,0.75},
{1,-68,48.07477288,-68 ,0.75},
{1,-138,48.07477288,-138,0.75},
};
//湿接缝斜长标注
public static double[,] DIMLINEAR1 = new double[9, 5]
{
{0,0,49.07477,0,30},
{23.53738644,0,25.53739,0,10},
{1,2,48.07477,2,-20},
{0,-70,49.07477288,-70 ,30},
{23.53738644,-70,25.53738644,-70,10},
{1,-68,48.07477,-68,-20 },
{0,-140,49.07477,-140,30 },
{23.53738644,-140,25.53739,-140,10},
{1,-138,48.07477288,-138,-20},
};
以上是部分代码节选，我将需要绘制的多段线和标注的坐标数据保存在单独的cs文件中。未来有变化，直接修改这里的参数就可以。
4.2 在主程序中加入上面的参数表
double[,] xl_pline = textpoint.xlsm; double[,] line2 = textpoint.line2; double[,] N_pline2 = textpoint.N_pline2; //double[,] DIMLINEAR = textpoint.DIMLINEAR1; //double[,] DIMLINEAR2 = textpoint.DIMLINEAR2; double[,] line3 = textpoint.line3; double[,] DIMLINEAR4 = textpoint.DIMLINEAR4;
<span class="token keyword">double</span><span class="token punctuation">[</span><span class="token punctuation">,</span><span class="token punctuation">]</span> line4 <span class="token operator">=</span> textpoint<span class="token punctuation">.</span>line4<span class="token punctuation">;</span> <span class="token keyword">double</span><span class="token punctuation">[</span><span class="token punctuation">,</span><span class="token punctuation">]</span> N_pline3 <span class="token operator">=</span> textpoint<span class="token punctuation">.</span>N_pline3<span class="token punctuation">;</span> <span class="token keyword">double</span><span class="token punctuation">[</span><span class="token punctuation">,</span><span class="token punctuation">]</span> line5 <span class="token operator">=</span> textpoint<span class="token punctuation">.</span>line5<span class="token punctuation">;</span>
标签：动态 未来 部分 主程序 action 修改 size tab write
原文地址：https://www.cnblogs.com/wwssgg/p/14718598.html
