Teigha的简单应用 DwgView
本帖最后由 雪山飞狐_lzh 于 2014-7-17 18:09 编辑19982月，独立的、非营利的"OpenDWG Alliance" 组织成立，目标是让dwg文件成为一个开放的、大家都可以用的图形存储标准。这个联盟是由Visio牵头的多家公司组成的。"OpenDWG Alliance"致力于开发读写dwg文件的程序，开始开发供成员使用的OpenDWG Toolkit和 Viewkit(在以前 MarComp 发AUTODIRECT 库基础上)
Teigha即DWGdirect（OpenDWG ）
关于Teigha的由来可以看看这个http://www.25kx.com/art/706332
Teigha的最新版是4.0
但是我只在CSDN上找到了较老的3.03版，但基本能用。。。
下面是个简单的测试例子
using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.Drawing;
using TDb = Teigha.DatabaseServices;
using TRx = Teigha.Runtime;
using TGe = Teigha.Geometry;
using TGi = Teigha.GraphicsInterface;
using TGs = Teigha.GraphicsSystem;
namespace TlsCad.Trans
{
public class DwgView : IDisposable
{
private Panel _panel = null;
private TDb.Database _db;
private TGs.LayoutHelperDevice _dev = null;
private Graphics _graphics = null;
public Panel Panel
{
set
{
_panel = value;
InitializeGraphics();
}
get
{
return _panel;
}
}
public TDb.Database Database
{
get { return _db; }
}
private void ReSize()
{
if (_dev != null)
{
Rectangle rec = _panel.Bounds;
rec.Offset(-_panel.Location.X, -_panel.Location.Y);
// HDC assigned to the device corresponds to the whole client area of the panel
_dev.OnSize(rec);
}
}
protected void OnPaint(object sender, PaintEventArgs e)
{
if (_dev != null)
{
_dev.Update();
}
}
protected void OnReSize(object sender, EventArgs e)
{
ReSize();
}
public DwgView(Panel panel)
{
_db = new TDb.Database(true, false);
_panel = panel;
InitializeGraphics();
}
public DwgView(Panel panel, string dwgFileName)
{
_db = new TDb.Database(false, false);
_db.ReadDwgFile(dwgFileName, TDb.FileOpenMode.OpenForReadAndAllShare, true, "");
_panel = panel;
InitializeGraphics();
}
private void InitializeGraphics()
{
_graphics = Graphics.FromHwnd(_panel.Handle);
_panel.Resize += OnReSize;
_panel.Paint += OnPaint;
//rendering module (may be also "WinDirectX" or "WinOpenGL")
using (var module = (TGs.GsModule)TRx.SystemObjects.DynamicLinker.LoadModule("WinOpenGL.txv", false, true))
{
if (module != null)
{
// create graphics device
using (var device = module.CreateDevice())
{
if (device != null)
{
//setup device properties
using (TRx.Dictionary props = device.Properties)
{
if (props.Contains("WindowHWND")) // Check if property is supported
props.AtPut("WindowHWND", new TRx.RxVariant(_panel.Handle)); // hWnd necessary for DirectX device
if (props.Contains("WindowHDC")) // Check if property is supported
props.AtPut("WindowHDC", new TRx.RxVariant(_graphics.GetHdc())); // hWindowDC necessary for Bitmap device
if (props.Contains("DoubleBufferEnabled")) // Check if property is supported
props.AtPut("DoubleBufferEnabled", new TRx.RxVariant(true));
if (props.Contains("EnableSoftwareHLR")) // Check if property is supported
props.AtPut("EnableSoftwareHLR", new TRx.RxVariant(true));
if (props.Contains("DiscardBackFaces")) // Check if property is supported
props.AtPut("DiscardBackFaces", new TRx.RxVariant(true));
}
var ctx = new TGi.ContextForDbDatabase(_db);
ctx.UseGsModel = true;
_dev = TGs.LayoutHelperDevice.SetupActiveLayoutViews(device, ctx);
_dev.UserGiContext = ctx;
_dev.SetLogicalPalette(TGs.Device.DarkPalette);
Rectangle rec = _panel.Bounds;
rec.Offset(-_panel.Location.X, -_panel.Location.Y);
// HDC assigned to the device corresponds to the whole client area of the panel
_dev.OnSize(rec);
}
}
}
}
}
public void AddEntity(params TDb.Entity[] ents)
{
using (var tr = _db.TransactionManager.StartTransaction())
{
var btr = (TDb.BlockTableRecord)tr.GetObject(_db.CurrentSpaceId, TDb.OpenMode.ForWrite);
foreach (var ent in ents)
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, false);
}
tr.Commit();
}
}
public void AddEntity(IEnumerable<TDb.Entity> ents)
{
using (var tr = _db.TransactionManager.StartTransaction())
{
var btr = (TDb.BlockTableRecord)tr.GetObject(_db.CurrentSpaceId, TDb.OpenMode.ForWrite);
foreach (var ent in ents)
{
btr.AppendEntity(ent);
tr.AddNewlyCreatedDBObject(ent, false);
}
tr.Commit();
}
}
public void Zoom(TGe.BoundBlock3d box)
{
using (var vtr = (TDb.ViewportTableRecord)_db.CurrentViewportTableRecordId.GetObject(TDb.OpenMode.ForWrite))
{
// using protocol extensions we handle PS and MS viewports in the same manner
using (var vpd = new TDb.AbstractViewportData(vtr))
{
var view = vpd.GsView;
// do actual zooming - change GS view
// here protocol extension is used again, that provides some helpful functions
using (var vpe = new TDb.AbstractViewPE(view))
{
box.TransformBy(view.ViewingMatrix);
vpe.ZoomExtents(box);
}
vpd.SetView(view);
}
}
ReSize();
}
public void Zoom(TDb.Extents3d ext)
{
TGe.BoundBlock3d box = new TGe.BoundBlock3d();
box.Set(ext.MinPoint, ext.MaxPoint);
Zoom(box);
}
public void ZoomWindow(TGe.Point3d minPoint, TGe.Point3d maxPoint)
{
TGe.BoundBlock3d box = new TGe.BoundBlock3d();
box.Set(minPoint, maxPoint);
Zoom(box);
}
private bool GetLayoutExtents(TDb.Database db, TGs.View view, ref TGe.BoundBlock3d box)
{
var bt = (TDb.BlockTable)db.BlockTableId.GetObject(TDb.OpenMode.ForRead);
var space = (TDb.BlockTableRecord)bt.GetObject(TDb.OpenMode.ForRead);
var layout = (TDb.Layout)space.LayoutId.GetObject(TDb.OpenMode.ForRead);
var ext = new TDb.Extents3d();
if (layout.GetViewports().Count > 0)
{
bool bOverall = true;
foreach (TDb.ObjectId id in layout.GetViewports())
{
if (bOverall)
{
bOverall = false;
continue;
}
var pVp = (TDb.Viewport)id.GetObject(TDb.OpenMode.ForRead);
}
ext.TransformBy(view.ViewingMatrix);
box.Set(ext.MinPoint, ext.MaxPoint);
}
else
{
ext = layout.Extents;
}
box.Set(ext.MinPoint, ext.MaxPoint);
return ext.MinPoint != ext.MaxPoint;
}
public void ZoomExtents()
{
using (var vtr = _db.CurrentViewportTableRecordId.GetObject(TDb.OpenMode.ForWrite))
{
// using protocol extensions we handle PS and MS viewports in the same manner
using (var vpd = new TDb.AbstractViewportData(vtr))
{
var view = vpd.GsView;
// do actual zooming - change GS view
// here protocol extension is used again, that provides some helpful functions
using (var vpe = new TDb.AbstractViewPE(view))
{
TGe.BoundBlock3d box = new TGe.BoundBlock3d();
bool bValid = vpe.GetViewExtents(box);
if (vtr is TDb.Viewport && ((TDb.Viewport)vtr).Number == 1)
{
if (!bValid || !(box.GetMinimumPoint().X < box.GetMaximumPoint().X && box.GetMinimumPoint().Y < box.GetMaximumPoint().Y))
{
bValid = GetLayoutExtents(_db, view, ref box);
}
}
else if (!bValid) // model space viewport
{
bValid = GetLayoutExtents(_db, view, ref box);
}
if (!bValid)
{
// set to somewhat reasonable (e.g. paper size)
if (_db.Measurement == TDb.MeasurementValue.Metric)
{
box.Set(TGe.Point3d.Origin, new TGe.Point3d(297.0, 210.0, 0.0)); // set to papersize ISO A4 (portrait)
}
else
{
box.Set(TGe.Point3d.Origin, new TGe.Point3d(11.0, 8.5, 0.0)); // ANSI A (8.50 x 11.00) (landscape)
}
box.TransformBy(view.ViewingMatrix);
}
vpe.ZoomExtents(box);
}
vpd.SetView(view);
}
}
ReSize();
}
public void Dispose()
{
if (_db != null)
{
_db.Dispose();
_db = null;
}
if (_dev != null)
{
_dev.Dispose();
_dev = null;
}
}
}
}
/////////////////////////////////////////////////////////////////////////////// // Copyright (C) 2003-2014, Open Design Alliance (the "Alliance").
// All rights reserved.
//
// This software and its documentation and related materials are owned by
// the Alliance. The software may only be incorporated into application
// programs owned by members of the Alliance, subject to a signed
// Membership Agreement and Supplemental Software License Agreement with the
// Alliance. The structure and organization of this software are the valuable
// trade secrets of the Alliance and its suppliers. The software is also
// protected by copyright law and international treaty provisions. Application
// programs incorporating this software must include the following statement
// with their copyright notices:
//
// This application incorporates Teigha(R) software pursuant to a license
// agreement with Open Design Alliance.
// Teigha(R) Copyright (C) 2003-2014 by Open Design Alliance.
// All rights reserved.
//
// By use of this software, its documentation or related materials, you
// acknowledge and accept the above terms.
///////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Text;
using Teigha;
using Teigha.DatabaseServices;
using Microsoft.Win32;
namespace TlsCad.ApplicationServices
{
class HostAppServ : HostApplicationServices
{
public HostAppServ()
{
}
public String FindConfigPath(String configType)
{
String subkey = GetRegistryAcadProfilesKey();
if (subkey.Length > 0)
{
subkey += String.Format("\\General");
String searchPath;
if (GetRegistryString(Registry.CurrentUser, subkey, configType, out searchPath))
return searchPath;
}
return String.Format("");
}
private String FindConfigFile(String configType, String file)
{
String searchPath = FindConfigPath(configType);
if (searchPath.Length > 0)
{
searchPath = String.Format("{0}\\{1}", searchPath, file);
if (System.IO.File.Exists(searchPath))
return searchPath;
}
return String.Format("");
}
public override String FindFile(String file, Database db, FindFileHint hint)
{
String sFile = this.FindFileEx(file, db, hint);
if (sFile.Length > 0)
return sFile;
String strFileName = file;
String ext;
if (strFileName.Length > 3)
ext = strFileName.Substring(strFileName.Length - 4, 4).ToUpper();
else
ext = file.ToUpper();
if (ext == String.Format(".PC3"))
return FindConfigFile(String.Format("PrinterConfigDir"), file);
if (ext == String.Format(".STB") || ext == String.Format(".CTB"))
return FindConfigFile(String.Format("PrinterStyleSheetDir"), file);
if (ext == String.Format(".PMP"))
return FindConfigFile(String.Format("PrinterDescDir"), file);
switch (hint)
{
case FindFileHint.FontFile:
case FindFileHint.CompiledShapeFile:
case FindFileHint.TrueTypeFontFile:
case FindFileHint.PatternFile:
case FindFileHint.FontMapFile:
case FindFileHint.TextureMapFile:
break;
default:
return sFile;
}
if (hint != FindFileHint.TextureMapFile && ext != String.Format(".SHX") && ext != String.Format(".PAT") && ext != String.Format(".TTF") && ext != String.Format(".TTC"))
{
strFileName += String.Format(".shx");
}
else if (hint == FindFileHint.TextureMapFile)
{
strFileName.Replace(String.Format("/"), String.Format("\\"));
int last = strFileName.LastIndexOf("\\");
if (last == -1)
strFileName = "";
else
strFileName = strFileName.Substring(0, last);
}
sFile = (hint != FindFileHint.TextureMapFile) ? GetRegistryACADFromProfile() : GetRegistryAVEMAPSFromProfile();
while (sFile.Length > 0)
{
int nFindStr = sFile.IndexOf(";");
String sPath;
if (-1 == nFindStr)
{
sPath = sFile;
sFile = String.Format("");
}
else
{
sPath = String.Format("{0}\\{1}", sFile.Substring(0, nFindStr), strFileName);
if (System.IO.File.Exists(sPath))
{
return sPath;
}
sFile = sFile.Substring(nFindStr + 1, sFile.Length - nFindStr - 1);
}
}
if (hint == FindFileHint.TextureMapFile)
{
return sFile;
}
if (sFile.Length <= 0)
{
String sAcadLocation = GetRegistryAcadLocation();
if (sAcadLocation.Length > 0)
{
sFile = String.Format("{0}\\Fonts\\{1}", sAcadLocation, strFileName);
if (System.IO.File.Exists(sFile))
{
sFile = String.Format("{0}\\Support\\{1}", sAcadLocation, strFileName);
if (System.IO.File.Exists(sFile))
{
sFile = String.Format("");
}
}
}
}
return sFile;
}
public override bool GetPassword(String fileName, PasswordOptions options, out String pass)
{
//PasswordDlg pwdDlg = new PasswordDlg();
/*pwdDlg.TextFileName.Text = fileName;
if (pwdDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
pass = pwdDlg.password.Text;
return true;
}*/
pass = String.Format("");
return false;
}
public override String FontMapFileName
{
get
{
String subkey = GetRegistryAcadProfilesKey();
if (subkey.Length > 0)
{
subkey += String.Format("\\Editor Configuration");
String fontMapFile;
if (GetRegistryString(Registry.CurrentUser, subkey, String.Format("FontMappingFile"), out fontMapFile))
return fontMapFile;
}
return String.Format("");
}
}
bool GetRegistryString(RegistryKey rKey, String subkey, String name, out String value)
{
bool rv = false;
object objData = null;
RegistryKey regKey;
regKey = rKey.OpenSubKey(subkey);
if (regKey != null)
{
objData = regKey.GetValue(name);
if (objData != null)
{
rv = true;
}
regKey.Close();
}
if (rv)
value = objData.ToString();
else
value = String.Format("");
rKey.Close();
return rv;
}
String GetRegistryAVEMAPSFromProfile()
{
String subkey = GetRegistryAcadProfilesKey();
if (subkey.Length > 0)
{
subkey += String.Format("\\General");
// get the value for the ACAD entry in the registry
String tmp;
if (GetRegistryString(Registry.CurrentUser, subkey, String.Format("AVEMAPS"), out tmp))
return tmp;
}
return String.Format("");
}
String GetRegistryAcadProfilesKey()
{
String subkey = String.Format("SOFTWARE\\Autodesk\\AutoCAD");
String tmp;
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format("CurVer"), out tmp))
return String.Format("");
subkey += String.Format("\\{0}", tmp);
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format("CurVer"), out tmp))
return String.Format("");
subkey += String.Format("\\{0}\\Profiles", tmp);
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format(""), out tmp))
return String.Format("");
subkey += String.Format("\\{0}", tmp);
return subkey;
}
String GetRegistryAcadLocation()
{
String subkey = String.Format("SOFTWARE\\Autodesk\\AutoCAD");
String tmp;
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format("CurVer"), out tmp))
return String.Format("");
subkey += String.Format("\\{0}", tmp);
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format("CurVer"), out tmp))
return String.Format("");
subkey += String.Format("\\{0}", tmp);
if (!GetRegistryString(Registry.CurrentUser, subkey, String.Format(""), out tmp))
return String.Format("");
return tmp;
}
String GetRegistryACADFromProfile()
{
String subkey = GetRegistryAcadProfilesKey();
if (subkey.Length > 0)
{
subkey += String.Format("\\General");
// get the value for the ACAD entry in the registry
String tmp;
if (GetRegistryString(Registry.CurrentUser, subkey, String.Format("ACAD"), out tmp))
return tmp;
}
return String.Format("");
}
};
}
有没有最新的.net版本呢? 本帖最后由 雪山飞狐_lzh 于 2014-7-15 13:25 编辑
测试的Form.cs
注意自己加panel控件和Resize 、FormClosed 事件
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using TDb = Teigha.DatabaseServices;
using TRx = Teigha.Runtime;
using TGe = Teigha.Geometry;
using TGi = Teigha.GraphicsInterface;
using TGs = Teigha.GraphicsSystem;
using TlsCad.ApplicationServices;
namespace GhaTest
{
public partial class Form1 : Form
{
TRx.Services _srv;
TlsCad.Trans.DwgView _dview;
public Form1()
{
_srv = new TRx.Services();
TDb.HostApplicationServices.Current = new HostAppServ();
InitializeComponent();
_dview = new TlsCad.Trans.DwgView(panel1);
//_dview.AddEntity(
// new TDb.Line(new TGe.Point3d(-20, 0, 0), new TGe.Point3d(20, 0, 0)),
// new TDb.Line(new TGe.Point3d(0, -20, 0), new TGe.Point3d(0, 20, 0)),
// new TDb.Circle(TGe.Point3d.Origin, TGe.Vector3d.ZAxis, 10));
//_dview = new TlsCad.Trans.DwgView(panel1, "d:\\我的文档\\静力平衡6.dwg");
var txt = new TDb.DBText
{
Position = new TGe.Point3d(10,10,0),
TextString = "123",
};
txt.Height = 2;
var line = new TDb.Line(new TGe.Point3d(0, 0, 0), new TGe.Point3d(10, 10, 0));
_dview.AddEntity(txt, line);
_dview.ZoomExtents();
_dview.Database.SaveAs("d:\\11.dwg", TDb.DwgVersion.AC1800);
}
private void Form1_Resize(object sender, EventArgs e)
{
panel1.SetBounds(0, 0, Bounds.Width - 5, Bounds.Height - 30);
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
_dview.Dispose();
_srv.Dispose();
}
}
}
热烈欢迎雪山飞狐重出江湖！ 请问3.0版本的能读的最新的Dwg文件是哪个版本呢?Dwg 2010 2013 这两个版本能不能读? 本帖最后由 雪山飞狐_lzh 于 2014-7-15 20:28 编辑
到官网（http://www.opendesign.com/）去下载了最新的Teigha Viewer +上SDK组合在一起 发现是可用的 。。。
DwgView类的InitializeGraphics函数这里要改下要
using (var module = (TGs.GsModule)TRx.SystemObjects.DynamicLinker.LoadModule("WinBitmap.txv", false, true))
第三方插件;
集成来自 Siemens PLM软件的 D-Cubed 2D DCM（2D标注约束管理器 ）
对这个很感兴趣哈,低版本CAD做标准件裤的希望 太需要这个东西了，资料太少了。谢谢雪山飞狐_lzh 有没有更多参考资料呢。 Teigha的代码基本和.Net二次开发的没有很大区别 谢谢，终于看到4.0的了