cad.net 块裁剪边界反向修剪
说明
看起来Autodesk忘记了通过API公开此设置,或将其包含在DXF输出中.也许您可以通过调用 SpatialFilter.ClipVolumeIntersectsExtents() 来确定它,它的内容完全在边界之内.
该设置通过 DwgOutFields() 提交给DWG文件管理器,
因此,如果所有其他操作均失败,则可以编写一个自定义AcDbDwgFiler来捕获该设置.
Querying for XCLIP information inside AutoCAD using .NET (帖子下面评论讨论了)
How do I determine if an x-clip boundary is inverted?
根据以上的帖子,我们会得到一个消息是,
桌子并没有封装好cad的块裁剪边界翻转部分.
然后我翻了翻api,
在Acad2015版本上面是已经加了一个 SpatialFilter.Inverted 这个函数.
而我们低版本需要的就是自己写.
最后进行刷新.
而这个模块到底有什么用呢?
实际上它是cad图元序列化
不过需要注意,单行文本会出错...没分析出原因...
但是要注意下面的函数,它们只是个例子,
没有提供撤销回滚的时候要刷新的操作...这个部分大家自己自行制作.
代码
测试命令
子函数参考: cad.net的undo返回操作
#if !HC2020
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;
using Acap = Autodesk.AutoCAD.ApplicationServices.Application;
#else
using GrxCAD.DatabaseServices;
using GrxCAD.EditorInput;
using GrxCAD.Runtime;
using Acap = GrxCAD.ApplicationServices.Application;
#endif
using System;
namespace JoinBox;
public static partial class Cmd_jjMoveBlockCropBoundary {
// 存在问题,undo撤回的时候无法代码刷新,只能用户自己去刷新...
// 选择图块,进行反向裁剪
[CommandMethod(nameof(JJ_Inverted),
CommandFlags.Modal | CommandFlags.UsePickSet | CommandFlags.Redraw | CommandFlags.Session)]
public static void JJ_Inverted() {
var doc = Acap.DocumentManager.MdiActiveDocument;
var ed = doc.Editor;
var peo = new PromptEntityOptions(Environment.NewLine + "点选图块:") {
AllowObjectOnLockedLayer = false,
AllowNone = false
};
var per = ed.GetEntity(peo);
if (per.Status != PromptStatus.OK) return;
CadSystem.Undo(true);
using var docLocker = doc.Lock();
using DBTrans tr = new();
using var ent = tr.GetObject(per.ObjectId, OpenMode.ForRead);
if (ent is BlockReference brf) {
brf.SpatialFilterInverted();
}
CadSystem.Undo(false);
}
}
SpatialFilter.cs
利用组合模式来制作同名的SpatialFilter类
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using System.Collections.Generic;
using AcadSF = Autodesk.AutoCAD.DatabaseServices.Filters.SpatialFilter;
namespace JoinBox;
// 感觉这个封装不是很好,因为需要释放,
// 但是又写在了助手类传出去外面...
public class SpatialFilter : IDisposable {
bool _disposed = false;
~SpatialFilter(){
Dispose(false);
}
public void Dispose(){
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing){
if (_disposed) return;
_disposed = true;
if (disposing) {
// 释放托管资源
}
// 释放非托管资源
Filter.Dispose();
}
bool _inverted;
public bool Inverted {
get => _inverted;
set {
if (_inverted == value) return;
_inverted = value;
// 设定反向裁剪
var df = new DwgFilerEx(Filter);
df.DwgOut();
df.Inverted();
df.DwgIn();
}
}
public AcadSF Filter { get; private set; }
public SpatialFilter() { Filter = new(); }
public SpatialFilter(AcadSF sp) {
Filter = sp;
}
/// <summary>
/// 生成块裁剪边界多段线
/// </summary>
/// <returns></returns>
public ObjectId CreatePolyLine() {
var vertices = Filter.Definition.GetPoints();
var tr = DBTrans.Top;
List<BulgeVertex> bulges;
// 生成一个矩形
if (vertices.Count == 2) {
bulges = new List<BulgeVertex> {
new BulgeVertex(vertices[0],0),
new BulgeVertex(new Point2d(vertices[0].X, vertices[1].Y),0),
new BulgeVertex(vertices[1],0),
new BulgeVertex(new Point2d(vertices[1].X, vertices[0].Y),0)
};
}
else {
bulges = vertices.Cast<Point2d>
.Select(item => new BulgeVertex(item, 0))
.ToList();
}
var pl = EntityAdd.AddPolyLineToEntity(0, bulges.ToArray());
return tr.AddEntityToMsPs(db, pl);
}
/// <summary>
/// 隐式转换(相当于是重载赋值运算符)
/// </summary>
public static implicit operator SpatialFilter(DBObject spatial) {
if (spatial is AcadSF sp) {
return new SpatialFilter(sp);
}
throw new("错误");
}
}
SpatialFilterHelper.cs
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.DatabaseServices.Filters;
using AcadSF = Autodesk.AutoCAD.DatabaseServices.Filters.SpatialFilter;
namespace JoinBox;
public static class SpatialFilterHelper {
/// <summary>
/// 块裁剪边界翻转
/// </summary>
/// <param name="brf">块参照</param>
public static void SpatialFilterInverted(this BlockReference brf) {
using var sf = brf.GetBlockBoundaryInfo();
if (sf is null) return;
// 直接设置为反向
sf.Filter.UpgradeOpen();
sf.Inverted = !info.Inverted;
sf.Filter.DowngradeOpen();
var ids = brf.ToIEnumerable().ToIds();
tr.EntityRedraw(ids, Bright.RecordGraphicsModified);
}
// 定义扩展词典和条目名称的名称
const string dictName = "ACAD_FILTER";
const string spName = "SPATIAL";
/// <summary>
/// 设置块裁剪边界
/// </summary>
/// <param name="filterDef">边界信息</param>
/// <param name="brf">块参照</param>
public static SpatialFilter? SetBlockBoundaryInfo(this BlockReference brf, SpatialFilterDefinition filterDef) {
var tr = DBTrans.Top;
if (brf.ExtensionDictionary.IsNull) {
brf.UpgradeOpen();
brf.CreateExtensionDictionary(); // 创建扩展字典
brf.DowngradeOpen();
}
// eInvalidInput错误 1:是因为矩形边界要从左下到右上 2:非当前空间
var filter = new SpatialFilter();
filter.Filter.Definition = filterDef;
// 删除已有边界词典,再重新加入
using var extDict = (DBDictionary)tr.GetObject(brf.ExtensionDictionary, OpenMode.ForWrite);
if (extDict.Contains(dictName)) {
var fid = extdict.GetAt(dictName);
if (!fid.IsOk()) return null;
using var filterDict = (DBDictionary)tr.GetObject(fid, OpenMode.ForWrite);
if (filterDict.Contains(spName)) filterDict.Remove(spName);
filterDict.SetAt(spName, filter.Filter);
filterDict.DowngradeOpen();
}
else {
using var filterDict = new DBDictionary();
extDict.SetAt(dictName, filterDict);
tr.AddNewlyCreatedDBObject(filterDict, true);
filterDict.SetAt(spName, filter.Filter);
}
extDict.DowngradeOpen();
tr.AddNewlyCreatedDBObject(filter.Filter, true);
return filter;
}
/// <summary>
/// 获取块参照的裁剪边界信息
/// </summary>
/// <param name="brf">块参照</param>
/// <returns>裁剪信息,null表示没有裁剪</returns>
public static SpatialFilter? GetBlockBoundaryInfo(this BlockReference brf) {
// 拓展词典存在,遇到没有裁剪就报错
if (brf.ExtensionDictionary.IsNull) return null;
var tr = DBTrans.Top;
using var extdict = (DBDictionary)tr.GetObject(brf.ExtensionDictionary, OpenMode.ForRead);
if (extdict.Contains(dictName)) return null;
var fid = extdict.GetAt(dictName);
if (!fid.IsOk()) return null;
using var dict = (DBDictionary)tr.GetObject(fid, OpenMode.ForRead);
if (!dict.Contains(spName)) return null;
var spid = dict.GetAt(spName);
if (!spid.IsOk()) return null;
// todo 所有GetObject都要加入using,此处无法添加,因此外部调用需要添加
SpatialFilter filter = (AcadSF)tr.GetObject(spid, OpenMode.ForRead);
return filter;
}
/// <summary>
/// 删除裁剪边界
/// </summary>
/// <param name="blockId">块参照的id</param>
public static void DelBlockBoundary(this ObjectId blockId) {
if (!blockId.IsOk()) return;
var tr = DBTrans.Top;
using var brf = (BlockReference)tr.GetObject(blockId, OpenMode.ForWrite);
if (brf is null) return;
if (brf.ExtensionDictionary.IsNull) return;
using var extDict = (DBDictionary)tr.GetObject(brf.ExtensionDictionary, OpenMode.ForWrite);
// var extDict = brf.ExtensionDictionary.ToDBDictionary(tr);
if (extDict.Contains(dictName)) {
var fid = extDict.GetAt(dictName);
if (fid.IsOk()) {
using var filterDict = (DBDictionary)tr.GetObject(fid, OpenMode.ForWrite);
if (filterDict.Contains(spName))
filterDict.Remove(spName);
filterDict.DowngradeOpen();
}
// 直接删它不也可以吗?可达性算法会移除下面成员吗?
extDict.Remove(dictName);
}
extDict.DowngradeOpen();
// 删除"ACAD_FILTER"中的"SPATIAL"就删除边界了
brf.ReleaseExtensionDictionary();
brf.DowngradeOpen();
}
}
DwgFilerEx.cs
using Autodesk.AutoCAD.DatabaseServices;
using Newtonsoft.Json;
using System.Text.RegularExpressions;
namespace JoinBox;
public class DwgFilerEx {
DBObject _entity;
public DwgFiler DwgFiler { get; set; }
public DwgFilerEx(DBObject entity) {
_entity = entity;
DwgFiler = new DwgFiler();
}
public void DwgOut() => _entity.DwgOut(DwgFiler);
public void DwgIn() => _entity.DwgIn(DwgFiler);
/// <summary>
/// 设定裁剪边界翻转
/// </summary>
public void Inverted() {
// true反向裁剪,false正向裁剪
if (DwgFiler.Uint16List[1] == 1) DwgFiler.Uint16List[1] = 0;
else DwgFiler.Uint16List[1] = 1;
}
/// <summary>
/// 序列化
/// </summary>
/// <returns></returns>
public string SerializeObject() {
return JsonConvert.SerializeObject(DwgFiler); //序列化*类转字符串
// Root = JsonConvert.DeserializeObject<Root>(json);//反序列化*字符串转类
}
public override string ToString() {
var str = SerializeObject();
// 替换中括号以外的字符串,替换逗号为换行符 https://bbs.csdn.net/topics/370134253
str = str.Substring(1, str.Length - 2);
str = Regex.Replace(str, @"(?:,)(?![^\[]*?\])", "\r\n");
return str;
}
}
DwgFiler.cs
ObjectId不能序列化,不然会出现报错.要转为int或者long...
#if !HC2020
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using Acap = Autodesk.AutoCAD.ApplicationServices.Application;
using AcadDwgFiler = Autodesk.AutoCAD.DatabaseServices.DwgFiler;
#else
using GrxCAD.DatabaseServices;
using GrxCAD.EditorInput;
using GrxCAD.Geometry;
using GrxCAD.Runtime;
using Acap = GrxCAD.ApplicationServices.Application;
using AcadDwgFiler = GrxCAD.DatabaseServices.DwgFiler;
#endif
using System.Reflection;
using System;
using System.Collections.Generic;
using System.Linq;
/*
Arx自定义实体类,
加读函数(assertReadEnabled)和写函数(assertWriteEnabled)
[Serializable] 设置序列化
[Newtonsoft.Json.JsonIgnore] 设置成员不可序列化
*/
namespace JoinBox;
[Serializable]
public class DwgFiler : AcadDwgFiler {
#if NET35
public int m_Position;
#else
public long m_Position;
#endif
public FilerType m_FilerType;
public ErrorStatus m_FilerStatus;
public List<IntPtr> AddressList { get; set; }
public int AddressListPt = 0;
public List<byte[]> BinaryChunkList { get; set; }
public int BinaryChunkListPt = 0;
public List<bool> BooleanList { get; set; }
public int BooleanListPt = 0;
public List<byte> ByteList { get; set; }
public int ByteListPt = 0;
public List<byte[]> BytesList { get; set; }
public int BytesListPt = 0;
public List<double> DoubleList { get; set; }
public int DoubleListPt = 0;
public List<Handle> HandleList { get; set; }
public int HandleListPt = 0;
[Newtonsoft.Json.JsonIgnore]
public List<ObjectId> HardOwnershipIdList { get; set; }
public int HardOwnershipIdListPt = 0;
[Newtonsoft.Json.JsonIgnore]
public List<ObjectId> HardPointerIdList { get; set; }
public int HardPointerIdListPt = 0;
public List<short> Int16List { get; set; }
public int Int16ListPt = 0;
public List<int> Int32List { get; set; }
public int Int32ListPt = 0;
#if !NET35
public List<long> Int64List { get; set; }
public int Int64ListPt = 0;
#endif
public List<Point2d> Point2dList { get; set; }
public int Point2dListPt = 0;
public List<Point3d> Point3dList { get; set; }
public int Point3dListPt = 0;
public List<Scale3d> Scale3dList { get; set; }
public int Scale3dListPt = 0;
[Newtonsoft.Json.JsonIgnore]
public List<ObjectId> SoftOwnershipIdList { get; set; }
public int SoftOwnershipIdListPt = 0;
[Newtonsoft.Json.JsonIgnore]
public List<ObjectId> SoftPointerIdList { get; set; }
public int SoftPointerIdListPt = 0;
public List<string> StringList { get; set; }
public int StringListPt = 0;
public List<ushort> Uint16List { get; set; }
public int uint16ListPt = 0;
public List<uint> Uint32List { get; set; }
public int uint32ListPt = 0;
#if !NET35
public List<ulong> Uint64List { get; set; }
public int uint64ListPt = 0;
#endif
public List<Vector2d> Vector2dList { get; set; }
public int Vector2dListPt = 0;
public List<Vector3d> Vector3dList { get; set; }
public int Vector3dListPt = 0;
public DwgFiler() {
m_Position = 0;
m_FilerType = FilerType.CopyFiler;
m_FilerStatus = ErrorStatus.OK;
AddressList = new List<IntPtr>();
BinaryChunkList = new List<byte[]>();
BooleanList = new List<bool>();
ByteList = new List<byte>();
BytesList = new List<byte[]>();
DoubleList = new List<double>();
HandleList = new List<Handle>();
HardOwnershipIdList = new List<ObjectId>();
HardPointerIdList = new List<ObjectId>();
Int16List = new List<short>();
Int32List = new List<int>();
#if !NET35
Int64List = new List<long>();
#endif
Point2dList = new List<Point2d>();
Point3dList = new List<Point3d>();
Scale3dList = new List<Scale3d>();
SoftOwnershipIdList = new List<ObjectId>();
SoftPointerIdList = new List<ObjectId>();
StringList = new List<string>();
Uint16List = new List<ushort>();
Uint32List = new List<uint>();
#if !NET35
Uint64List = new List<ulong>();
#endif
Vector2dList = new List<Vector2d>();
Vector3dList = new List<Vector3d>();
}
#if NET35
public override int Position => m_Position;
#else
public override long Position => m_Position;
#endif
public override FilerType FilerType => this.m_FilerType;
public override ErrorStatus FilerStatus {
get => m_FilerStatus;
set => m_FilerStatus = value;
}
public override IntPtr ReadAddress() {
if (AddressList.Count() == 0) return new IntPtr();
return AddressList[AddressListPt++];
}
public override byte[] ReadBinaryChunk() {
if (BinaryChunkList.Count() == 0) return new byte[0];
return BinaryChunkList[BinaryChunkListPt++];
}
public override bool ReadBoolean() {
if (BooleanList.Count() == 0) return false;
return BooleanList[BooleanListPt++];
}
public override byte ReadByte() {
if (ByteList.Count() == 0) return 0;
return ByteList[ByteListPt++];
}
public override void ReadBytes(byte[] value) {
if (ByteList.Count() == 0) return;
value = new byte[BytesList[BytesListPt].Length];
BytesList[BytesListPt++].CopyTo(value, 0);
}
public override double ReadDouble() {
if (DoubleList.Count() == 0) return 0;
return DoubleList[DoubleListPt++];
}
public override Handle ReadHandle() {
if (HandleList.Count() == 0) return new Handle();
return HandleList[HandleListPt++];
}
public override ObjectId ReadHardOwnershipId() {
if (HardOwnershipIdList.Count() == 0) return new ObjectId();
return HardOwnershipIdList[HardOwnershipIdListPt++];
}
public override ObjectId ReadHardPointerId() {
if (HardPointerIdList.Count() == 0) return new ObjectId();
return HardPointerIdList[HardPointerIdListPt++];
}
public override short ReadInt16() {
if (Int16List.Count() == 0) return 0;
return Int16List[Int16ListPt++];
}
public override int ReadInt32() {
if (Int32List.Count() == 0) return 0;
return Int32List[Int32ListPt++];
}
#if !NET35
public override long ReadInt64() {
if (Int64List.Count() == 0) return 0;
return Int64List[Int64ListPt++];
}
#endif
public override Point2d ReadPoint2d() {
if (Point2dList.Count() == 0) return new Point2d();
return Point2dList[Point2dListPt++];
}
public override Point3d ReadPoint3d() {
if (Point3dList.Count() == 0) return new Point3d();
return Point3dList[Point3dListPt++];
}
public override Scale3d ReadScale3d() {
if (Scale3dList.Count() == 0) return new Scale3d();
return Scale3dList[Scale3dListPt++];
}
public override ObjectId ReadSoftOwnershipId() {
if (SoftOwnershipIdList.Count() == 0) return new ObjectId();
return SoftOwnershipIdList[SoftOwnershipIdListPt++];
}
public override ObjectId ReadSoftPointerId() {
if (SoftPointerIdList.Count() == 0) return new ObjectId();
return SoftPointerIdList[SoftPointerIdListPt++];
}
public override string ReadString() {
if (StringList.Count() == 0) return "";
return StringList[StringListPt++];
}
public override ushort ReadUInt16() {
if (Uint16List.Count() == 0) return 0;
return Uint16List[uint16ListPt++];
}
public override uint ReadUInt32() {
if (Uint32List.Count() == 0) return 0;
return Uint32List[uint32ListPt++];
}
#if !NET35
public override ulong ReadUInt64() {
if (Uint64List.Count() == 0) return 0;
return Uint64List[uint64ListPt++];
}
#endif
public override Vector2d ReadVector2d() {
if (Vector2dList.Count() == 0) return new Vector2d();
return Vector2dList[Vector2dListPt++];
}
public override Vector3d ReadVector3d() {
if (Vector3dList.Count() == 0) return new Vector3d();
return Vector3dList[Vector3dListPt++];
}
public override void ResetFilerStatus() {
AddressList.Clear();
AddressListPt = 0;
BinaryChunkList.Clear();
BinaryChunkListPt = 0;
BooleanList.Clear();
BooleanListPt = 0;
ByteList.Clear();
ByteListPt = 0;
BytesList.Clear();
BytesListPt = 0;
DoubleList.Clear();
DoubleListPt = 0;
HandleList.Clear();
HandleListPt = 0;
HardOwnershipIdList.Clear();
HardOwnershipIdListPt = 0;
HardPointerIdList.Clear();
HardPointerIdListPt = 0;
Int16List.Clear();
Int16ListPt = 0;
Int32List.Clear();
Int32ListPt = 0;
#if !NET35
Int64List.Clear();
Int64ListPt = 0;
#endif
Point2dList.Clear();
Point2dListPt = 0;
Point3dList.Clear();
Point3dListPt = 0;
Scale3dList.Clear();
Scale3dListPt = 0;
SoftOwnershipIdList.Clear();
SoftOwnershipIdListPt = 0;
SoftPointerIdList.Clear();
SoftPointerIdListPt = 0;
StringList.Clear();
StringListPt = 0;
Uint16List.Clear();
uint16ListPt = 0;
Uint32List.Clear();
uint32ListPt = 0;
#if !NET35
Uint64List.Clear();
uint64ListPt = 0;
#endif
Vector2dList.Clear();
Vector2dListPt = 0;
Vector3dList.Clear();
Vector3dListPt = 0;
m_FilerType = FilerType.CopyFiler;
}
#if NET35
public override void Seek(int offset, int method) {
Editor ed = Acap.DocumentManager.MdiActiveDocument.Editor;
ed.WriteMessage(MethodInfo.GetCurrentMethod().Name + " = " + " \n ");
}
#else
public override void Seek(long offset, int method) {
Editor ed = Acap.DocumentManager.MdiActiveDocument.Editor;
ed.WriteMessage(MethodInfo.GetCurrentMethod().Name + " = " + " \n ");
}
#endif
public override void WriteAddress(IntPtr value) => AddressList.Add(value);
public override void WriteBinaryChunk(byte[] chunk) => BinaryChunkList.Add(chunk);
public override void WriteBoolean(bool value) => BooleanList.Add(value);
public override void WriteByte(byte value) => ByteList.Add(value);
public override void WriteBytes(byte[] value) => BytesList.Add(value);
public override void WriteDouble(double value) => DoubleList.Add(value);
public override void WriteHandle(Handle handle) => HandleList.Add(handle);
public override void WriteHardOwnershipId(ObjectId value) => HardOwnershipIdList.Add(value);
public override void WriteHardPointerId(ObjectId value) => HardPointerIdList.Add(value);
public override void WriteInt16(short value) => Int16List.Add(value);
public override void WriteInt32(int value) => Int32List.Add(value);
#if !NET35
public override void WriteInt64(long value) => Int64List.Add(value);
#endif
public override void WritePoint2d(Point2d value) => Point2dList.Add(value);
public override void WritePoint3d(Point3d value) => Point3dList.Add(value);
public override void WriteScale3d(Scale3d value) => Scale3dList.Add(value);
public override void WriteSoftOwnershipId(ObjectId value) => SoftOwnershipIdList.Add(value);
public override void WriteSoftPointerId(ObjectId value) => SoftPointerIdList.Add(value);
public override void WriteString(string value) => StringList.Add(value);
public override void WriteUInt16(ushort value) => Uint16List.Add(value);
public override void WriteUInt32(uint value) => Uint32List.Add(value);
#if !NET35
public override void WriteUInt64(ulong value) => Uint64List.Add(value);
#endif
public override void WriteVector2d(Vector2d value) => Vector2dList.Add(value);
public override void WriteVector3d(Vector3d value) => Vector3dList.Add(value);
public override string ToString() {
int ptCount = AddressListPt +
BinaryChunkListPt +
BooleanListPt +
ByteListPt +
BytesListPt +
DoubleListPt +
HandleListPt +
HardOwnershipIdListPt +
HardPointerIdListPt +
Int16ListPt +
Int32ListPt +
#if !NET35
Int64ListPt +
uint64ListPt +
#endif
Point2dListPt +
Point3dListPt +
Scale3dListPt +
SoftOwnershipIdListPt +
SoftPointerIdListPt +
StringListPt +
uint16ListPt +
uint32ListPt +
Vector2dListPt +
Vector3dListPt;
int ltCount = AddressList.Count() +
BinaryChunkList.Count() +
BooleanList.Count() +
ByteList.Count() +
BytesList.Count() +
DoubleList.Count() +
HandleList.Count() +
HardOwnershipIdList.Count() +
HardPointerIdList.Count() +
Int16List.Count() +
Int32List.Count() +
#if !NET35
Int64List.Count() +
Uint64List.Count() +
#endif
Point2dList.Count() +
Point3dList.Count() +
Scale3dList.Count() +
SoftOwnershipIdList.Count() +
SoftPointerIdList.Count() +
StringList.Count() +
Uint16List.Count() +
Uint32List.Count() +
Vector2dList.Count() +
Vector3dList.Count();
return "\nDataIn::" + ptCount + "\nDataOut::" + ltCount;
}
}
}
(完)
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