小工具

角度转弧度
弧度转角度
判断三点是否在同一条直线上
获取向量与X轴正方向角度
两点之前的距离
获取两点的中心点
将图形对象添加到图形文件中1
将图形对象添加到图形文件中2
两点绘制直线
起点、长度、角度绘制直线
圆心、半径、起始角度绘制圆弧
起始点、中点绘制圆弧
通过圆心、起点夹角绘制圆弧
删除图形对象
获得直线的起点坐标
偏移曲线
添加图层
获取所有图层名称

角度转弧度

/// <summary>
/// 角度转弧度
/// </summary>
/// <param name="degree">角度</param>
/// <returns>弧度</returns>
public static double DegreeToAngle(this double degree)
{return degree * (Math.PI / 180);
}

弧度转角度

 /// <summary>/// 弧度转角度/// </summary>/// <param name="angle">弧度</param>/// <returns>角度</returns>  public static double AngleToDegree(this double angle){return 180 / Math.PI * angle;}

判断三点是否在同一条直线上

/// <summary>
/// 判断三点是否在同一条直线上
/// </summary>
/// <param name="firstPoint">第一个点</param>
/// <param name="secondPoint">第二个点</param>
/// <param name="thirdPoint">第三个点</param>
/// <returns></returns>
public static bool IsOnOneLine(this Point3d firstPoint, Point3d secondPoint, Point3d thirdPoint)
{Vector3d v21 = secondPoint.GetVectorTo(firstPoint);Vector3d v23 = secondPoint.GetVectorTo(thirdPoint);if (v21.GetAngleTo(v23) == 0 || v21.GetAngleTo(v23) == Math.PI){return true;}else{return false;}
}

获取向量与X轴正方向角度

/// <summary>
/// 获取向量与X轴正方向角度
/// </summary>
/// <param name="startPoint">起点</param>
/// <param name="endPoint">终点</param>
/// <returns></returns>
public static double GetAngleToXAxis(this Point3d startPoint, Point3d endPoint)
{//声明一个与x轴平行的量Vector3d temp = new Vector3d(1, 0, 0);//获取起点到终点的向量Vector3d VsToe = startPoint.GetVectorTo(endPoint);return VsToe.Y > 0 ? temp.GetAngleTo(VsToe) : -temp.GetAngleTo(VsToe);
}

两点之前的距离

/// <summary>
/// 两点之前的距离
/// </summary>
/// <param name="point1"></param>
/// <param name="point2"></param>
/// <returns></returns>
public static double GetDistanceBetweenTwoPoint(this Point3d point1,Point3d point2)
{return point1.DistanceTo(point2);
}

获取两点的中心点

/// <summary>
/// 获取两点的中心点
/// </summary>
/// <param name="point1">第一个点</param>
/// <param name="point2">第二个点</param>
/// <returns>中心点</returns>
public static Point3d GetCenterPointBetweenTwoPoint(this Point3d point1, Point3d point2)
{return new Point3d((point1.X + point2.X) / 2, (point1.Y + point2.Y) / 2, (point1.Z + point2.Z) / 2);
}

将图形对象添加到图形文件中1

 /// <summary>
/// 将图形对象添加到图形文件中
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="entity">图形对象</param>
/// <returns>图形的objectid</returns>
public static ObjectId AddEntityToModelSpace(this Database db,Entity entity)
{//声明ObjectId，用于返回ObjectId entityId = ObjectId.Null;//开启事务using (Transaction trans = db.TransactionManager.StartTransaction()){//打开块表BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead);//打开块表记录BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace],OpenMode.ForWrite);//添加图形到块表记录entityId = btr.AppendEntity(entity);//更新数据信息trans.AddNewlyCreatedDBObject(entity, true);//提交trans.Commit();}return entityId;
}

将图形对象添加到图形文件中2

/// <summary>
/// 将图形对象添加到图形文件中
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="entity">图形对象，可变参数</param>
/// <returns>图形的objectId，数组返回</returns>
public static ObjectId[] AddEntityToModelSpace(this Database db,params Entity[] entity)
{//声明ObjectId 用于返回ObjectId[] entityId = new ObjectId[entity.Length];//开启事务using (Transaction trans = db.TransactionManager.StartTransaction()){//打开块表BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId,OpenMode.ForRead);// 打开块表记录BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace],OpenMode.ForWrite);for (int i = 0; i < entity.Length; i++){//添加图形到块表记录entityId[i] = btr.AppendEntity(entity[i]);//更新数据消息trans.AddNewlyCreatedDBObject(entity[i],true);}trans.Commit();}return entityId;
}

添加到Database

        public static ObjectId AddToDatabase<TEntity>(this TEntity entity, Transaction host, BlockTableRecord btr)where TEntity : Entity{if (entity is null) return ObjectId.Null;var id = btr.AppendEntity(entity);host.AddNewlyCreatedDBObject(entity, true);return id;}public static List<ObjectId> AddToDatabase<TEntity>(this ICollection<TEntity> entities, Transaction host, BlockTableRecord model_space)where TEntity : Entity{return entities.Select(entity =>{var id = model_space.AppendEntity(entity);host.AddNewlyCreatedDBObject(entity, true);return id;}).ToList();}

两点绘制直线

/// <summary>
/// 绘制直线
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="startPoint">起点坐标</param>
/// <param name="endPoint">终点坐标</param>
/// <returns>ObjectId</returns>
public static ObjectId AddLineToModelSpace(this Database db,Point3d startPoint,Point3d endPoint)
{return db.AddEntityToModelSpace(new Line(startPoint,endPoint));
}

起点、长度、角度绘制直线

/// <summary>
/// 绘制直线
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="startPoint">起点坐标</param>
/// <param name="length">直线长度</param>
/// <param name="degree">与x轴正方向的角度</param>
/// <returns>ObjectId</returns>
public static ObjectId AddLineToModelSpace(this Database db,Point3d startPoint,double length,double degree)
{//计算终点坐标double x = startPoint.X+length*Math.Cos(degree.DegreeToAngle());double y = startPoint.Y + length * Math.Sin(degree.DegreeToAngle());Point3d endPoint = new Point3d(x, y, 0);return db.AddEntityToModelSpace(new Line(startPoint,endPoint));
}

圆心、半径、起始角度绘制圆弧

/// <summary>
/// 绘制圆弧
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="center">圆弧所在圆的圆心点</param>
/// <param name="radius">圆弧的半径</param>
/// <param name="startDegree">圆弧的起始角度</param>
/// <param name="endDegree">圆弧的终止角度</param>
/// <returns>ObjectId</returns>
public static ObjectId AddArcToModelSpace(this Database db,Point3d center,double radius,double startDegree,double endDegree)
{return db.AddEntityToModelSpace(new Arc(center,radius,startDegree.DegreeToAngle(),endDegree.DegreeToAngle()));
}

起始点、中点绘制圆弧

/// <summary>
/// 绘制圆弧
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="startPoint">圆弧的起始点</param>
/// <param name="pointOnArc"></param>
/// <param name="endPoint">圆弧的终止点</param>
/// <returns>ObjectId</returns>
public static ObjectId AddArcToModelSpace(this Database db,Point3d startPoint,Point3d pointOnArc,Point3d endPoint)
{//创建几何类对象CircularArc3d cArc = new CircularArc3d(startPoint,pointOnArc,endPoint);//先判断三点是否在同一条直线上if (startPoint.IsOnOneLine(pointOnArc,endPoint)){return ObjectId.Null;}//创建圆弧对象Arc arc = new Arc(cArc.Center,cArc.Radius,cArc.Center.GetAngleToXAxis(startPoint),cArc.Center.GetAngleToXAxis(endPoint));// 加入图形数据库return db.AddEntityToModelSpace(arc);
}

通过圆心、起点夹角绘制圆弧

/// <summary>
/// 通过圆心、起点夹角绘制圆弧
/// </summary>
/// <param name="db">图形数据库</param>
/// <param name="center">圆心</param>
/// <param name="startPoint">起点</param>
/// <param name="degree">夹角,角度值</param>
/// <returns>ObjectId</returns>
public static ObjectId AddArcToModelSpace(this Database db,Point3d center,Point3d startPoint,double degree)
{//获取半径double radius = center.GetDistanceBetweenTwoPoint(startPoint);//获取起点角度double startAngle = center.GetAngleToXAxis(startPoint);//声明圆弧对象Arc arc = new Arc(center,radius,startAngle,startAngle+degree.DegreeToAngle());return db.AddEntityToModelSpace(arc);
}

删除图形对象

/// <summary>
/// 删除图形对象
/// </summary>
/// <param name="entId">图形对象的ObjectId</param>
public static void EraseEntity(this ObjectId entId)
{//打开事务处理using (Transaction trans = entId.Database.TransactionManager.StartTransaction()){//打开要删除的图形对象Entity ent = (Entity)entId.GetObject(OpenMode.ForWrite);//删除ent.Erase();trans.Commit();}
}

获得直线的起点坐标

/// <summary>
/// 获得直线的起点坐标
/// </summary>
/// <param name="lineId">直线对象的ObjectId</param>
/// <returns></returns>
private Point3d GetLineStartPoint(ObjectId lineId)
{Point3d startPoint;Database db = HostApplicationServices.WorkingDatabase;using (Transaction trans = db.TransactionManager.StartTransaction()){Line line = (Line)lineId.GetObject(OpenMode.ForRead);startPoint = line.StartPoint;}return startPoint;
}

偏移曲线

/// <summary>
/// 偏移曲线
/// </summary>
/// <param name="curves">偏移曲线</param>
/// <param name="dis">偏移距离</param>
/// <returns>偏移后对象集合</returns>
public List<Curve> OffSet(List<Curve> curves,double dis)
{List<Curve> curveList = new List<Curve>();for (int i = 0; i < curves.Count; i++){DBObjectCollection offCur = curves[i].GetOffsetCurves(dis);foreach (var c in offCur){Curve curve = (Curve)c;curveList.Add(curve);}}return curveList;
}

添加图层

/// <summary>/// 添加图层/// </summary>/// <param name="layName"></param>/// <param name="Index"></param>public void AddLayer(string layName, int Index) {Document doc = Application.DocumentManager.MdiActiveDocument;Database db = doc.Database;Editor ed = doc.Editor;string LayerName = "";using (Transaction trans = db.TransactionManager.StartTransaction()){LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForWrite);if (lt.Has(layName)){ed.WriteMessage($"\n <{layName}>图层已存在！");}else{LayerName = layName;LayerTableRecord ltr = new LayerTableRecord();ltr.Name = LayerName;//short indexColor = (short)(Index % 256);short indexColor = (short)(Index);ltr.Color = Color.FromColorIndex(ColorMethod.ByLayer, indexColor);ObjectId layerId = lt.Add(ltr);trans.AddNewlyCreatedDBObject(ltr, true);db.Clayer = layerId;}trans.Commit();}}

获取所有图层名称

// 获取当前文档
Document doc = Application.DocumentManager.MdiActiveDocument;
// 获取当前数据库
Database db = doc.Database;using (Transaction trans = db.TransactionManager.StartTransaction())
{// 打开图层表var lt = trans .GetObject(db.LayerTableId, OpenMode.ForRead) as LayerTable;// 遍历图层表foreach (ObjectId id in lt){var ltr = trans .GetObject(id, OpenMode.ForRead) as LayerTableRecord;// 输出图层名称doc.Editor.WriteMessage(ltr.Name + "\n");}trans .Commit();
}

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Cad二次开发小工具

小工具

角度转弧度

弧度转角度

判断三点是否在同一条直线上

获取向量与X轴正方向角度

两点之前的距离

获取两点的中心点

将图形对象添加到图形文件中1

将图形对象添加到图形文件中2

两点绘制直线

起点、长度、角度绘制直线

圆心、半径、起始角度绘制圆弧

起始点、中点绘制圆弧

通过圆心、起点夹角绘制圆弧

删除图形对象

获得直线的起点坐标

偏移曲线

添加图层

获取所有图层名称

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