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用C#实现外部调用CAD绘图一例

文章来源:不详作者:佚名

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该文章讲述了用C#实现外部调用CAD绘图一例.

? 绝妙的数学等式MTSTool钢结构工具箱?

2005-12-25 19:30:34

用C#实现外部调用CAD绘图一例-CAD Automation

说明:

一个老外(好像是印度人)写的例子,实现外部程序调用CAD程序,代码中加入了自定义了的类——PF (PublicFunctions),类中包含了几个很实用的函数,如CreateAutoCADObject()可以创建打开一个新的AutoCAD文档,还有绘制线(Line)、文字(Text)和圆(Circel)等函数。注释不多,但仔细研究一下还是对自己很有帮助的。

代码下载:本地|CodeProject

PF类代码示例:

using System;

using System.Collections.Generic;

using System.Text;

using System.Diagnostics;

using System.Windows.Forms;

using AutoCAD;

namespace CADAutomation

{

public static class PF

{

public static AcadApplication gbl_app;

public static AcadDocument gbl_doc;

public static AcadModelSpaceClass gbl_modSpace;

public static AcadAcCmColor gbl_color;

public static double gbl_pi = 3.14159;

//Layer For Donuts

public static AcadLayer TerminalsLayer;

public static AcadLayer SwitchLayer;

//Layer Termination Points

public static AcadLayer TerminationPoints;

#region PublicFunctions

public static void CloseAllInstance()

{

Process[] aCAD =

Process.GetProcessesByName("acad");

foreach (Process aCADPro in aCAD)

{

aCADPro.CloseMainWindow();

}

}

public static void CreateAutoCADObject()

{

try

{

CloseAllInstance();

gbl_app = new AcadApplication();

gbl_doc = gbl_app.ActiveDocument;

gbl_app.Application.Visible = true;

gbl_modSpace = (AcadModelSpaceClass)gbl_doc.ModelSpace;

gbl_doc.Linetypes.Load("HIDDEN", "acad.lin");

gbl_doc.Linetypes.Load("CENTER", "acad.lin");

//Other Objects Layer

SwitchLayer = PF.gbl_https://www.wendangku.net/doc/372244521.html,yers.Add("Switch110Layer");

SwitchLayer.color = AutoCAD.AcColor.acGreen;

PF.gbl_doc.ActiveLayer = SwitchLayer;

//Layer For Donuts

TerminalsLayer = PF.gbl_https://www.wendangku.net/doc/372244521.html,yers.Add("TerminalsLayer");

TerminalsLayer.color = AutoCAD.AcColor.acRed;

//Layer Termination Points

TerminationPoints =

PF.gbl_https://www.wendangku.net/doc/372244521.html,yers.Add("TerminationPoints");

TerminationPoints.color = AutoCAD.AcColor.acWhite;

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

}

public static void DrawLine(double StartX1,

double StartY1,

double EndX2,

double EndY2,

string LineType,

bool DrawDonutsOnLineStart,

bool DrawDonutsOnLineEnds) {

AcadLine lineObj;

double[] startPoint = new double[3];

double[] endPoint = new double[3]; ;

startPoint[0] = StartX1;

startPoint[1] = StartY1;

startPoint[2] = 0.0;

endPoint[0] = EndX2;

endPoint[1] = EndY2;

endPoint[2] = 0.01;

lineObj = gbl_doc.ModelSpace.AddLine(startPoint, endPoint);

if (LineType.Length > 0)

{

lineObj.Linetype = LineType; //'"HIDDEN"

lineObj.LinetypeScale = 10;

lineObj.Update();

}

if (DrawDonutsOnLineStart == true)

{

DrawDonut((AcadBlock)gbl_doc.ModelSpace,

0, 3.0, StartX1, StartY1);

}

if (DrawDonutsOnLineEnds == true)

{

DrawDonut((AcadBlock)gbl_doc.ModelSpace,

0, 3.0, EndX2, EndY2);

}

gbl_app.ZoomAll();

}

public static void DrawLine(double StartX1,

double StartY1,

double EndX2,

double EndY2)

{

DrawLine(StartX1, StartY1, EndX2, EndY2, "", false, false); }

public static void DrawLine(double StartX1,

double StartY1,

double EndX2,

double EndY2,

string LineType)

{

DrawLine(StartX1, StartY1, EndX2, EndY2,

LineType, false, false);

}

public static void DrawLine(double StartX1,

double StartY1,

double EndX2,

double EndY2,

string LineType,

bool DrawDonutsOnLineStart)

{

DrawLine(StartX1, StartY1, EndX2,

EndY2, LineType, DrawDonutsOnLineStart, false);

}

public static AcadLWPolyline DrawDonut(AcadBlock space,

double inRad,

double outRad,

double cenPt1,

double cenPt2) {

double width, radius, PI;

double[] tmp = new double[2];

double[] v = new double[4];

AcadLWPolyline pl;

double[] basePnt = new double[3];

try

{

//Switch to terminals layer

gbl_doc.ActiveLayer = TerminalsLayer;

basePnt[0] = cenPt1;

basePnt[1] = cenPt2;

basePnt[2] = 0.0;

PI = Math.Atan(1) * 4;

width = (outRad - inRad) / 2;

radius = (inRad + width) / 2;

tmp = (double[])gbl_doc.Utility.PolarPoint(basePnt,

PI, radius);

v[0] = tmp[0];

v[1] = tmp[1];

tmp = (double[])gbl_doc.Utility.PolarPoint(basePnt,

0, radius);

v[2] = tmp[0];

v[3] = tmp[1];

pl = space.AddLightWeightPolyline(v);

pl.Closed = true;

pl.SetWidth(0, width, width);

pl.SetBulge(0, -1);

pl.SetWidth(1, width, width);

pl.SetBulge(1, -1);

//Switch to other layer

gbl_doc.ActiveLayer = SwitchLayer;

return pl;

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

return null;

}

}

public static void DrawSolid(double StartingXPoint,

double StartingYPoint,

double Length,

double Width)

{

AcadSolid solidObj;

double[] point1 = new double[3];

double[] point2 = new double[3];

double[] point3 = new double[3];

double[] point4 = new double[3];

//Solid Starts

point1[0] = StartingXPoint;

point1[1] = StartingYPoint;

point1[2] = 0.0;

point2[0] = StartingXPoint;

point2[1] = (StartingYPoint) - Width;

point2[2] = 0.0;

point3[0] = StartingXPoint + Length;

point3[1] = StartingYPoint;

point3[2] = 0.0;

point4[0] = StartingXPoint + Length;

point4[1] = (StartingYPoint) - Width;

point4[2] = 0.0;

solidObj = gbl_doc.ModelSpace.AddSolid(point1,

point2, point3, point4);

//Solid ENDS

}

public static void DrawText(double StartingXPoint,

double StartingYPoint,

string textString,

double Height,

double Rotation)

{

AcadText textObj;

double[] insertionPoint = new double[3];

insertionPoint[0] = StartingXPoint;

insertionPoint[1] = StartingYPoint;

insertionPoint[2] = 0.0;

textObj = gbl_doc.ModelSpace.AddText(textString,

insertionPoint, Height);

textObj.Alignment = AcAlignment.acAlignmentLeft;

textObj.Backward = false;

textObj.Rotation = Rotation;

}

public static void DrawText(double StartingXPoint,

double StartingYPoint,

string textString)

{

DrawText(StartingXPoint, StartingYPoint, textString, 3, 0); }

public static void AddText(double StartingXPoint,

double StartingYPoint,

string textString,

double Height)

{

DrawText(StartingXPoint, StartingYPoint, textString, Height, 0); }

public static void DrawCircle(double StartingXPoint,

double StartingYPoint,

double Radius)

{

AcadCircle circleObj;

double[] centerPoint = new double[3];

centerPoint[0] = StartingXPoint;

centerPoint[1] = StartingYPoint;

centerPoint[2] = 0.0;

circleObj = gbl_doc.ModelSpace.AddCircle(centerPoint, Radius); }

public static void DrawArc(double StartingXPoint,

double StartingYPoint,

double Radius)

{

//For Drawing Arc

AcadArc arcObj;

AcadCircle circleObj;

double[] centerPoint = new double[3];

double startAngleInDegree;

double endAngleInDegree;

double startAngleInRadian;

double endAngleInRadian;

//Draw Arc

centerPoint[0] = StartingXPoint;

centerPoint[1] = StartingYPoint;

startAngleInDegree = 175.0;

endAngleInDegree = 5.0;

startAngleInRadian = startAngleInDegree * 3.141592 / 180.0;

endAngleInRadian = endAngleInDegree * 3.141592 / 180.0;

arcObj = gbl_doc.ModelSpace.AddArc(centerPoint, Radius,

startAngleInRadian, endAngleInRadian);

}

public static void DrawTerminationPoint(double StartingXPoint,

double StartingYPoint) {

gbl_doc.ActiveLayer = TerminationPoints;

DrawCircle(StartingXPoint, StartingYPoint, 1.8);

DrawLine(StartingXPoint - 2.5, StartingYPoint - 4.0,

(StartingXPoint - 2.5) + 4.0,

(StartingYPoint - 4.0) + 7.0);

gbl_doc.ActiveLayer = SwitchLayer;

}

#endregion

}

}

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