尝试使用 C# 上的 AutoCAD 类镜像图形
Posted
技术标签:
【中文标题】尝试使用 C# 上的 AutoCAD 类镜像图形【英文标题】：Trying to mirror a drawing using the AutoCAD class on C# 【发布时间】：2020-03-22 19:45:42 【问题描述】：目前我有一个使用 AutoCAD 类绘制的对象，但我可以选择在绘制后镜像它。我不知道该怎么做。
[CommandMethod("DrawTestDoor")]
public void DrawTestDoor()
Document acDoc = Application.DocumentManager.MdiActiveDocument;
var ed = acDoc.Editor;
XDDoor s1 = new XDDoor();
PromptKeywordOptions pKeyOpts = new PromptKeywordOptions("");
pKeyOpts.Message = "\nIt is Rated ";
pKeyOpts.Keywords.Add("True");
pKeyOpts.Keywords.Add("False");
pKeyOpts.Keywords.Default = "True";
pKeyOpts.AllowNone = true;
PromptResult pKeyRes = acDoc.Editor.GetKeywords(pKeyOpts);
bool fireRated = Convert.ToBoolean(pKeyRes.StringResult);
var promptResultheight = ed.GetString("\nEnter the Frame height: ");
double height = Convert.ToDouble(promptResultheight.StringResult);
var promptResultwidth = ed.GetString("\nFrame Width: ");
double width = Convert.ToDouble(promptResultwidth.StringResult);
var promptResultFrameDepthChange = ed.GetString("\nEnter the frame depth change ");
double frameDepthChange = Convert.ToDouble(promptResultFrameDepthChange.StringResult);
PromptKeywordOptions pKeyOpts1 = new PromptKeywordOptions("");
pKeyOpts1.Message = "\nDoor Handle Side";
pKeyOpts1.Keywords.Add("Left");
pKeyOpts1.Keywords.Add("Right");
pKeyOpts1.Keywords.Default = "Left";
pKeyOpts1.AllowNone = true;
s1.DrawSingleXDDoor(height, width, fireRated, frameDepthChange);
Matrix2d md = new Matrix2d();
md.Translation.Mirror()
这个md.Translation.Mirror() 是我认为需要改变的行。我已经尝试了很多方法来做镜像，但我一直回到这个问题，因为我不知道s1 对象是这样保存的。也许认为它需要转换为实体？
public void DrawSingleXDDoor(double height, double width, bool fireRated, double frameDepthChange)
DrawLid("lid", leafHeight, lidWidth);
public void DrawLid(string type, double height, double width)
DrawShapes d1 = new DrawShapes();
DrawComponents xd = new DrawComponents();
d1.DrawRectangle(0, 0, height, width);
public void DrawRectangle(double startx, double starty, double recHeight, double recWidth)
double height = recHeight;
double width = recWidth;
//Get the drawing document and the dataabses object
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
using (Transaction trans = db.TransactionManager.StartTransaction())
try
BlockTable bt;
bt = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
BlockTableRecord btr;
btr = trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
Polyline p1 = new Polyline();
p1.AddVertexAt(0, new Point2d(startx + 0, starty + 0), 0, 0, 0);
p1.AddVertexAt(0, new Point2d(startx + 0, starty + height), 0, 0, 0);
p1.AddVertexAt(0, new Point2d(startx + width, starty + height), 0, 0, 0);
p1.AddVertexAt(0, new Point2d(startx + width, starty + 0), 0, 0, 0);
p1.AddVertexAt(0, new Point2d(startx + 0, starty + 0), 0, 0, 0);
p1.SetDatabaseDefaults();
btr.AppendEntity(p1);
trans.AddNewlyCreatedDBObject(p1, true);
trans.Commit();
catch (System.Exception ex)
doc.Editor.WriteMessage("Error encountered: " + ex.Message);
trans.Abort();
【问题讨论】：
嗯，看起来你试图镜像什么。你有一个没有数据的默认实例化二维矩阵......所以你的镜像不起作用是有道理的。您需要引用某种模型空间对象才能镜像。您很可能需要创建一个新事务来将新镜像的对象插入模型空间。对不起，如果我的术语被关闭了，我已经有几年没有为 autocad 编程了。 @TraeMoore 我不知道如何去照镜子，所以你说得对，事实上我没有引用任何东西。 s1 正在按照我希望的方式绘制。但是我不确定如何在它被实例化的命令中镜像它。 【参考方案1】：我直到现在才弄清楚这一点。许多试验和错误。我会尽力提供尽可能多的代码示例
arrays.cs
public void PopulateWithOldArray(List<double> newArray, List<double> oldArray, bool negate)
//if there are any previous version of the new array we want them to be cleared so that the called old array will not be affected
newArray.Clear();
if (negate == true)
for (int i = 0; i < oldArray.Count; i++)
newArray.Add(-oldArray[i]);
else
for (int i = 0; i < oldArray.Count; i++)
newArray.Add(oldArray[i]);
//end PopulateWithOldArray
public void MirrorXaxis(double startx, double starty, List<double> x, List<double> y, List<double> angle)
List<double> changedx = new List<double> ;
List<double> changedangle = new List<double> ;
PopulateWithOldArray(changedx, x, true);
PopulateWithOldArray(changedangle, angle, true);
DrawShapes ds = new DrawShapes();
for (int i = 0; i < angle.Count; i++)
ds.DrawPolyLine(changedx[i] + startx, y[i] + starty, changedx[i + 1] + startx, y[i + 1] + starty, changedangle[i]);
//end for
//end mirror
drawshapes.cs
using System;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.EditorInput;
namespace doorsetsDraw
class DrawShapes
public void DrawPolyLine(double startx, double starty, double endx, double endy, double endBulgeAngle)
//Get the drawing document and the dataabses object
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
//create the transaction object inside the using block
using (Transaction trans = db.TransactionManager.StartTransaction())
try
//get the blocktable object
//doc.Editor.WriteMessage("Drawing a 2d Polyline!"); //extra option to last editor
BlockTable bt;
bt = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
BlockTableRecord btr;
btr = trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord; //draw into model space
//specify the polyline's coordinates
Polyline p1 = new Polyline();
p1.AddVertexAt(0, new Point2d(startx, starty), 0, 0, 0);
p1.AddVertexAt(0, new Point2d(endx, endy), BulgeEquationTan(endBulgeAngle), 0, 0);
p1.SetDatabaseDefaults();
btr.AppendEntity(p1);
trans.AddNewlyCreatedDBObject(p1, true);
trans.Commit();
catch (System.Exception ex)
doc.Editor.WriteMessage("Error encountered: " + ex.Message);
trans.Abort();
//abort to roll out of excpetion for unreferenced object
//end catch
//end using
//end drawpolylineElip
public double BulgeEquationTan(double angleD)
double tanV = ConvertToRadians(angleD) / 4;
double tanA = Math.Tan(tanV);
return tanA;
//end BulgeEquationTan
public double ConvertToRadians(double angle)
return (Math.PI / 180) * angle;
//end ConvertToRadians
【讨论】：
天哪……很高兴你知道了！【参考方案2】：此示例取自 AutoCAD 2017 .Net SDK。
您似乎错过了在变换上设置镜像点并将镜像副本插入到BlockTable。添加新的p1 (polyline) 后，下面的代码应直接执行。我从here 得到了这个代码示例。试一试，让我知道。干杯！
// Define the mirror line
Point3d acPtFrom = new Point3d(0, 4.25, 0);
Point3d acPtTo = new Point3d(4, 4.25, 0);
Line3d acLine3d = new Line3d(acPtFrom, acPtTo);
// Mirror the polyline across the X axis
acPolyMirCopy.TransformBy(Matrix3d.Mirroring(acLine3d));
// Add the new object to the block table record and the transaction
acBlkTblRec.AppendEntity(acPolyMirCopy);
acTrans.AddNewlyCreatedDBObject(acPolyMirCopy, true);
【讨论】：
我试试看！明天给你回复 我试过了，无法与我正在做的比较。 @Joelad，尝试利用折线构建块，然后将块添加到模型空间。一旦你有了块参考，镜像块。您可能需要重新构建您的一些代码......但以同样的能力，您可能应该有一个创建对象的工厂，然后有一个块转换器将对象转换为块。然后使用自定义实用程序（您将构建的实用程序）在模型空间中镜像。 谢谢，听起来不错，但我不知道该怎么做:( 从这里开始：through-the-interface.typepad.com/through_the_interface/2010/01/…。 Keen Walmsley 为 c# AutoCad 开发撰写了一篇出色的博客。以上是关于尝试使用 C# 上的 AutoCAD 类镜像图形的主要内容，如果未能解决你的问题，请参考以下文章