/// <summary>
/// 删除实体的缩放比例
/// </summary>
/// <param name="entId">实体的Id</param>
/// <param name="scaleNames">缩放比例名列表</param>
public static void RemoveScale(this ObjectId entId, params string[] scaleNames)
{
//获取entId指示的实体对象
DBObject obj = entId.GetObject(OpenMode.ForRead);
//如果实体对象支持注释缩放
if (obj.Annotative != AnnotativeStates.NotApplicable)
{
//获得对象所有的注释比例
List <ObjectContext> scales = entId.GetAllScales();
obj.UpgradeOpen();//切换实体为写的状态
//获取当前图形的对象比例管理器
ObjectContextManager ocm = obj.Database.ObjectContextManager;
//获取当前图形的注释比例列表，名为ACDB_ANNOTATIONSCALES
ObjectContextCollection occ = ocm.GetContextCollection("ACDB_ANNOTATIONSCALES");
//遍历需要设置的注释比例
foreach (string scaleName in scaleNames)
{
//获取名为scaleName的注释比例
ObjectContext scale = occ.GetContext(scaleName);
//若不存在scaleName的注释比例，则结束本次循环
if (scale == null)
{
continue;
}
//删除名为scaleName的注释比例
ObjectContexts.RemoveContext(obj, scale);
}
obj.DowngradeOpen();//为了安全将实体切换为读的状态
}
}
/// <summary>
/// 在AutoCAD图形中插入块参照
/// </summary>
/// <param name="spaceId">块参照要加入的模型空间或图纸空间的Id</param>
/// <param name="layer">块参照要加入的图层名</param>
/// <param name="blockName">块参照所属的块名</param>
/// <param name="position">插入点</param>
/// <param name="scale">缩放比例</param>
/// <param name="rotateAngle">旋转角度</param>
/// <returns>返回块参照的Id</returns>
public static ObjectId InsertBlockReference(this ObjectId spaceId, string layer, string blockName, Point3d position, Scale3d scale, double rotateAngle)
{
ObjectId blockRefId; //存储要插入的块参照的Id
Database db = spaceId.Database; //获取数据库对象
//以读的方式打开块表
BlockTable bt = (BlockTable)db.BlockTableId.GetObject(OpenMode.ForRead);
//如果没有blockName表示的块，则程序返回
if (!bt.Has(blockName))
{
return(ObjectId.Null);
}
//以写的方式打开空间（模型空间或图纸空间）
BlockTableRecord space = (BlockTableRecord)spaceId.GetObject(OpenMode.ForWrite);
//创建一个块参照并设置插入点
BlockReference br = new BlockReference(position, bt[blockName]);
br.ScaleFactors = scale; //设置块参照的缩放比例
br.Layer = layer; //设置块参照的层名
br.Rotation = rotateAngle; //设置块参照的旋转角度
ObjectId btrId = bt[blockName]; //获取块表记录的Id
//打开块表记录
BlockTableRecord record = (BlockTableRecord)btrId.GetObject(OpenMode.ForRead);
//添加可缩放性支持
if (record.Annotative == AnnotativeStates.True)
{
ObjectContextCollection contextCollection = db.ObjectContextManager.GetContextCollection("ACDB_ANNOTATIONSCALES");
ObjectContexts.AddContext(br, contextCollection.GetContext("1:1"));
}
blockRefId = space.AppendEntity(br); //在空间中加入创建的块参照
db.TransactionManager.AddNewlyCreatedDBObject(br, true); //通知事务处理加入创建的块参照
space.DowngradeOpen(); //为了安全，将块表状态改为读
return(blockRefId); //返回添加的块参照的Id
}
/// <summary>
/// 在AutoCAD图形中插入块参照
/// </summary>
/// <param name="spaceId">块参照要加入的模型空间或图纸空间的Id</param>
/// <param name="layer">块参照要加入的图层名</param>
/// <param name="blockName">块参照所属的块名</param>
/// <param name="position">插入点</param>
/// <param name="scale">缩放比例</param>
/// <param name="rotateAngle">旋转角度</param>
/// <param name="attNameValues">属性的名称与取值</param>
/// <returns>返回块参照的Id</returns>
public static ObjectId InsertBlockReference(this ObjectId spaceId, string layer, string blockName, Point3d position, Scale3d scale, double rotateAngle)
{
DocumentLock docLock = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
ObjectId blockRefId;
Database db = spaceId.Database;
BlockTable bt = (BlockTable)db.BlockTableId.GetObject(OpenMode.ForRead);
if (!bt.Has(blockName))
{
return(ObjectId.Null);
}
BlockTableRecord space = (BlockTableRecord)spaceId.GetObject(OpenMode.ForWrite);
BlockReference br = new BlockReference(position, bt[blockName]);
br.ScaleFactors = scale;
br.Layer = layer;
br.Rotation = rotateAngle;
ObjectId btrId = bt[blockName];
BlockTableRecord record = (BlockTableRecord)btrId.GetObject(OpenMode.ForRead);
if (record.Annotative == AnnotativeStates.True)
{
ObjectContextCollection contextCollection = db.ObjectContextManager.GetContextCollection("ACDB_ANNOTATIONSCALES");
ObjectContexts.AddContext(br, contextCollection.GetContext("1:1"));
}
blockRefId = space.AppendEntity(br);
db.TransactionManager.AddNewlyCreatedDBObject(br, true);
space.DowngradeOpen();
docLock.Dispose();
return(blockRefId);
}
/// <summary>
/// Вставка блока с атрибутами
/// </summary>
/// <param name="promptCounter">0 - только вставка, 1 - с поворотом</param>
/// <param name="tr">Транзакция</param>
/// <param name="db">База данных чертежа</param>
/// <param name="ed">Editor</param>
/// <param name="blkDefId">ObjectId блока</param>
/// <param name="attributes">Список имен атрибутов</param>
/// <param name="isAnnotative">Аннотативность блока-исходника</param>
/// <returns></returns>
public static ObjectId InsertBlockRef(
int promptCounter,
Transaction tr,
Database db,
Editor ed,
ObjectId blkDefId,
List <string> attributes,
bool isAnnotative)
{
var btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
var blockReference = new BlockReference(Point3d.Origin, blkDefId);
if (isAnnotative)
{
var ocm = db.ObjectContextManager;
var occ = ocm.GetContextCollection("ACDB_ANNOTATIONSCALES");
ObjectContexts.AddContext(blockReference, occ.CurrentContext);
}
var id = btr.AppendEntity(blockReference);
tr.AddNewlyCreatedDBObject(blockReference, true);
var jig = new BlockRefJig(blockReference, AppendAttribToBlock(tr, blockReference, attributes));
jig.SetPromptCounter(0);
var res = ed.Drag(jig);
if (res.Status == PromptStatus.OK)
{
if (promptCounter == 1)
{
jig.SetPromptCounter(promptCounter);
res = ed.Drag(jig);
if (res.Status == PromptStatus.OK)
{
return(id);
}
}
else
{
return(id);
}
}
blockReference.Erase();
return(ObjectId.Null);
}
/// <summary>
/// 为实体添加指定的注释比例
/// </summary>
/// <param name="entId">实体的Id</param>
/// <param name="scaleNames">注释比例名列表</param>
public static void AttachScale(this ObjectId entId, params string[] scaleNames)
{
Database db = entId.Database;
//获取entId指示的实体对象
DBObject obj = entId.GetObject(OpenMode.ForRead);
//如果实体对象支持注释缩放
if (obj.Annotative != AnnotativeStates.NotApplicable)
{
//如果实体为块参照，则需要通过其所属的块表记录来设置可注释缩放
if (obj is BlockReference)
{
BlockReference br = obj as BlockReference;
//打开对应的块表记录
BlockTableRecord btr = (BlockTableRecord)br.BlockTableRecord.GetObject(OpenMode.ForWrite);
//设置块表记录为可注释缩放
btr.Annotative = AnnotativeStates.True;
}
//其它可注释缩放的实体，使其可注释缩放
else if (obj.Annotative == AnnotativeStates.False)
{
obj.Annotative = AnnotativeStates.True;
}
obj.UpgradeOpen();//切换实体为写的状态以添加注释比例
//获取当前图形的对象比例管理器
ObjectContextManager ocm = db.ObjectContextManager;
//获取当前图形的注释比例列表，名为ACDB_ANNOTATIONSCALES
ObjectContextCollection occ = ocm.GetContextCollection("ACDB_ANNOTATIONSCALES");
//遍历需要设置的注释比例
foreach (string scaleName in scaleNames)
{
//获取名为scaleName的注释比例
ObjectContext scale = occ.GetContext(scaleName);
//若不存在scaleName的注释比例，则结束本次循环
if (scale == null)
{
continue;
}
//为实体添加名为scaleName的注释比例
ObjectContexts.AddContext(obj, scale);
}
obj.DowngradeOpen();//为了安全将实体切换为读的状态
}
}
/// <summary>
/// 获取实体拥有的所有缩放比例
/// </summary>
/// <param name="entId">实体的Id</param>
/// <returns>返回实体的缩放比例列表</returns>
public static List <ObjectContext> GetAllScales(this ObjectId entId)
{
//声明一个列表对象，用于返回实体所拥有的所有的注释比例
List <ObjectContext> scales = new List <ObjectContext>();
DBObject obj = entId.GetObject(OpenMode.ForRead);
if (obj.Annotative != AnnotativeStates.NotApplicable)
{
ObjectContextManager ocm = obj.Database.ObjectContextManager;
ObjectContextCollection occ = ocm.GetContextCollection("ACDB_ANNOTATIONSCALES");
//遍历注释比例列表
foreach (ObjectContext oc in occ)
{
//如果实体拥有此注释比例
if (ObjectContexts.HasContext(obj, oc))
{
scales.Add(oc);//将此注释比例添加到返回列表中
}
}
}
return(scales);//返回实体所拥有的所有的注释比例
}
