cad.net 链式选择和断分标注
说明:
这篇可以用四叉树优化但是我懒用的暴力遍历🤣,见四叉树
由于cad自身的图元特性,标注作为一个复合型图元却没有做到磁性选择,
这样很糟糕,而我们非自定义图元的时候只能通过链式选择和断分标注模拟.
磁性选择:当存在共同点的时候,可以直接吸附起来,跟磁铁特性一样,
不是组也不是块参照,而是基于之间的状态,
组可以被s命令点击移动单个图元...块参照只能移动整体,块ctrl+1特性页不显示标注内容.
所以才有磁铁体,它应该显示夹点和可以直接修改磁铁体内的图元,例如标注和标注,引线和文字,自动吸附起,
解开才需要命令,可惜cad并没有这样的东西,比较失望...
而和天正标注很不一样的感觉是,天正标注没有自动吸附的感觉,也就是当鼠标移动标注对齐的时候,鼠标出现捕捉点的时候是可以获取交点图元的,此时则可以直接利用反应器制造关联.
啊,我才不要二次开发实现呢,一次开发做好才是最好的...不是桌子想不到,而是他们没有动力重构了.
链式选择:先选择所有图元,然后判断点击的图元共同点碰撞到下一个图元的公共点,则选择起来.(这里甚至可以建设一个B+树加快搜寻速度,我懒)
断分标注:直接看动图即可...
如果缺少函数,可利用搜索功能对博客进行搜索,如果真的缺了就留言吧.请登陆博客园看评论,我已经回答过全部的缺省.
源泉的作者告诉阿惊说,
标注避让的思路是上下左右移动文字,然后有优先排序的方式,例如优先的是上下上下上下上下的排序.
但是阿惊现在已经没空完成这个函数了...
若完成你就提供出来给大家吧.
动图演示
mac-lee的链式选择展示：点我
命令
//断分标注
[CommandMethod("nn", CommandFlags.Modal | CommandFlags.UsePickSet | CommandFlags.Redraw)] //预选 | CommandFlags.DocExclusiveLock
public void JJ_dd()
{
var dm = Acap.DocumentManager;
var doc = dm.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
ed.WriteMessage(Environment.NewLine + "****惊惊连盒-断分标注");
var peo = new PromptEntityOptions(Environment.NewLine + "点选标注:")
{
AllowObjectOnLockedLayer = false,
AllowNone = false
};
var optionsA = new PromptPointOptions(Environment.NewLine + "选取[断分/延长点]或[输入等分段数,负数为改数值)]:<空格退出>")
{
AllowArbitraryInput = true, //任意输入
};
//peo.Keywords.Add("D", "D", "多选来源块(D)");
try
{
DimInfo dimInfo = null;
Entity ent = null;
List<ObjectId> dimIdList = new();
db.Action(tr => {
//获取基础块的ID
object idOrKeyword = ed.SelectImpliedGetOne(tr, peo, new EntityType[] { EntityType.RotatedDimension, EntityType.AlignedDimension });
var baseId = ObjectId.Null;
if (idOrKeyword is ObjectId idv && idv.IsOk())
{
baseId = idv;
}
else
{
ed.WriteMessage("输入了关键字");
return;
////输入了关键字
//string str = idOrKeyword as string;
//switch (str)
//{
// case "D": //用户要求附加选择
// break;
//}
}
ent = baseId.ToEntity(tr);
dimIdList = ed.ChainReactor(ent, tr);//链式选择
if (dimIdList == null || dimIdList.Count() == 0)
return;
tr.EntityRedraw(dimIdList, Bright.Highlight);//亮显
dimInfo = ent.GetDimInfo(); //获取标注信息
});
var pprA = ed.GetPoint(optionsA);
if (pprA.Status == PromptStatus.Keyword)
{
//用户输入了数字,进行改变尺寸操作
int.TryParse(pprA.StringResult, out int a);
if (a < 0)
{
string str = (dimInfo.DimLength / -a).ToString("#0.00") + "*" + (-a).ToString() + "=<>";
if (dimInfo.DimType == EntityType.AlignedDimension.ToString())//对齐标注
{
if (ent is AlignedDimension dim)
dim.DimensionText = str;
}
else if (dimInfo.DimType == EntityType.RotatedDimension.ToString())//转角标注
{
if (ent is RotatedDimension dim)
dim.DimensionText = str;
}
}
else
{
//根据等分份数生成标注
double yifen = dimInfo.DimLength / a;
}
}
else if (pprA.Status == PromptStatus.OK)
{
dimIdList = DivideDim(ed, ent, pprA.Value, dimIdList);
//这里是留来写标注避让....
//这里是留来写标注避让....
//这里是留来写标注避让....
}
db.Action(tr => {
tr.EntityRedraw(dimIdList, Bright.Unhighlight);//取消亮显
});
}
catch (System.Exception e)
{
ed.WriteMessage("断分标注错误::" + e.Message);
}
}
/// <summary>
/// 循环分裂标注
/// </summary>
/// <param name="ent">选中的图元</param>
/// <param name="getpoint">分裂点</param>
/// <param name="idArr">选择集数组</param>
/// <returns>最终链条上面的图元</returns>
List<ObjectId> DivideDim(Editor ed, Entity ent, Point3d? getpoint, IEnumerable<ObjectId> idArr)
{
ed.GetWcsUcs(out _, out CoordinateSystemV ucs);
//获取标注信息
var entDimInfo = ent.GetDimInfo();
//链条的角度
double angle;
var pts2 = new Point3d[] { entDimInfo.DimLinePoint, entDimInfo.DimLinePointN };
var minToMax2 = pts2.OrderBy(a => a.X).ThenBy(a => a.Y).ThenBy(a => a.Z).ToArray();
if (minToMax2[0] == entDimInfo.DimLinePoint)
angle = -(entDimInfo.DimLinePoint.ToPointV().GetAngle2XAxis(entDimInfo.DimLinePointN));
else
angle = -(entDimInfo.DimLinePointN.ToPointV().GetAngle2XAxis(entDimInfo.DimLinePoint));
ed.WriteMessage(Environment.NewLine + "继续分裂/延长点");
var optionsA = new PromptPointOptions("")
{
AllowArbitraryInput = true, //任意输入
};
//遍历链式选择集
var dimIdList = idArr.ToList();
bool getPointBool = true;
while (getPointBool)
{
ent.Database.Action(tr => {
//第二次才执行
if (getpoint == null)
{
var ppr = ed.GetPoint(optionsA);
if (ppr.Status != PromptStatus.OK)
{
getPointBool = false;
return;
}
getpoint = ppr.Value;
}
//链条前后两个点
var pts = GetDimLinePoints(tr, dimIdList);
var dimMinToMaxs = pts.OrderBy(a => a.X).ThenBy(a => a.Y).ThenBy(a => a.Z).ToArray();
var dimMinPoint = dimMinToMaxs[0];
var dimMaxPoint = dimMinToMaxs[dimMinToMaxs.Length - 1];
//增点旋转到x轴
var getpointRo = getpoint.Value.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
var dimMaxRo = dimMaxPoint.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
//那ent到的顶点作为新图元的延伸点
var entXLine1PointRo = entDimInfo.XLine1Point.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
var shengchengList = new List<Point3d[]>();
Entity entok = null;//更改点最近的图元
//判断增点是否在范围外,是就补充尺寸,否就分裂尺寸
//pprARo只能够判断方向用
//用ent的点作为生成点
if (getpointRo.X < dimMinPoint.X) //增点在左外
{
var ddd = new Point3d[]
{
new Point3d( dimMinPoint.X, entXLine1PointRo.Y, entXLine1PointRo.Z),//标注边点2
dimMinPoint, //标注确认点
};
shengchengList.Add(ddd);
}
else if (getpointRo.X > dimMaxRo.X) //增点在右外
{
var ddd = new Point3d[]
{
new Point3d(dimMaxRo.X, entXLine1PointRo.Y, entXLine1PointRo.Z), //标注边点2
dimMaxRo, //标注确认点
};
shengchengList.Add(ddd);
}
else //增点在中 getpointRo 在链表中间的那个位置
{
//获取链条上所有的确认点的位置,判断分裂位置.
var lenthList = new List<double>();
foreach (var item in dimMinToMaxs)
{
var pt = item.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
lenthList.Add(pt.X - getpointRo.X);
}
//这里就是一个一维坐标值,通过x判断,负值到正值之间,大于0,然后前一个和它就是之间了
var newDimTwo = new Point3d[2];
for (int i = 0; i < lenthList.Count; i++)
{
if (lenthList[i] > 0)
{
newDimTwo[0] = dimMinToMaxs[i - 1];
newDimTwo[1] = dimMinToMaxs[i];
break;
}
}
//获取选择集上面与其相同点的
foreach (ObjectId item in dimIdList)
{
var entN = item.ToEntity(tr);
var dimInfoN = entN.GetDimInfo();
if (dimInfoN.DimLinePoint == newDimTwo[0] && dimInfoN.DimLinePointN == newDimTwo[1] ||
(dimInfoN.DimLinePoint == newDimTwo[1] && dimInfoN.DimLinePointN == newDimTwo[0])
)
{
entok = entN;
break;
}
}
if (entok != null)
{
//获取标注信息
var dimInfoOk = entok.GetDimInfo();
var xLine1OkRo = dimInfoOk.XLine1Point.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
var xLine2OkRo = dimInfoOk.XLine2Point.RotateBy(angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
//添加到生成表
var ddd = new Point3d[]
{
new Point3d(xLine1OkRo.X,entXLine1PointRo.Y, dimMinPoint.Z),//标注边点2
new Point3d(xLine1OkRo.X,dimMinPoint.Y, dimMinPoint.Z) //标注确认点
};
shengchengList.Add(ddd);
ddd = new Point3d[]
{
new Point3d(xLine2OkRo.X,entXLine1PointRo.Y, dimMinPoint.Z),//标注边点2
new Point3d(xLine2OkRo.X,dimMinPoint.Y, dimMinPoint.Z) //标注确认点
};
shengchengList.Add(ddd);
}
}
//新建标注
var bdq1 = new Point3d(getpointRo.X, entXLine1PointRo.Y, entXLine1PointRo.Z);//标注边点1
bool fa = true;
bool del = true;
if (entok == null)//不是分裂的时候就为空
{
entok = ent;
del = false;
}
foreach (var bdq in shengchengList)
{
//点1 == 点2 表示标注值为0,点在了标注的脚上面
if (bdq1 == bdq[0])
{
fa = false;
break;
}
}
if (fa)
{
var idsnew = new List<ObjectId>();
foreach (var bdq in shengchengList)
{
var id = entDimInfo.AddCreateDimToMsPs(tr, entok, bdq1, bdq[0], bdq[1]);
if (id != null)
{
idsnew.Add(id); //新图元用来旋转
dimIdList.Add(id); //新图元加入链条
}
}
//新增标注旋转回去.
tr.EntityRotate(idsnew.ToArray(), -angle, ucs.ZAxis.ToVector3d(), dimMinPoint);
if (del)
{
//删除原本,在增设的时候不删,在分裂的时候删掉
tr.EntityErase(entok.ObjectId.ToIEnumerable());
dimIdList.Remove(entok.ObjectId);
}
}
});
ent.Database.Action(tr => {
tr.EntityRedraw(dimIdList.ToArray(), Bright.Highlight);//亮显
});
getpoint = null;//设置为空才重新点选
}
return dimIdList;
}
标注信息
/// <summary>
/// 获取标注的信息
/// </summary>
public static DimInfo GetDimInfo(this Entity ent)
{
DimInfo dimre = null;
if (ent is AlignedDimension al)//对齐标注
{
dimre = new DimInfo(al);
}
else if (ent is RotatedDimension ro)//转角标注
{
dimre = new DimInfo(ro);
}
return dimre;
}
/// <summary>
/// 新建标注所需信息
/// </summary>
public class DimInfo
{
/// <summary>
/// 求标注的未知点
/// </summary>
/// <param name="xLine1Point">点1</param>
/// <param name="dimLinePoint">旋转点</param>
/// <param name="dimAngle">角度</param>
/// <returns>未知点</returns>
private static Point3d DimPointN(Point3d xLine1Point, Point3d dimLinePoint, double dimAngle)
{
//求出标注第一点下面那点
Point3d dimLinePointN = new Point3d(xLine1Point.RotateBy(-dimAngle, Vector3d.ZAxis, dimLinePoint).X, dimLinePoint.Y, dimLinePoint.Z);
dimLinePointN = dimLinePointN.RotateBy(dimAngle, Vector3d.ZAxis, dimLinePoint);
return dimLinePointN;
}
/// <summary>
/// 标注的类型
/// </summary>
public string DimType { get; set; }
/// <summary>
/// 标注的第一点
/// </summary>
public Point3d XLine1Point { get; set; }
/// <summary>
/// 标注的第二点
/// </summary>
public Point3d XLine2Point { get; set; }
/// <summary>
/// 标注的确定点与XLine2Point垂直的,甚至重合
/// </summary>
public Point3d DimLinePoint { get; set; }
/// <summary>
/// 标注的xLine1Point下面的点
/// </summary>
public Point3d DimLinePointN { get; set; }
/// <summary>
/// 标注的样式
/// </summary>
public ObjectId DimensionStyle { get; set; }
/// <summary>
/// 标注的测量距离
/// </summary>
public double DimLength { get; set; }
/// <summary>
/// 标注的线性比例
/// </summary>
public double DimScale { get; set; }
/// <summary>
/// 标注的标注角度
/// </summary>
public double DimAngle { get; set; }
/// <summary>
/// 全局比例
/// </summary>
public double Dimscale { get; set; }
public DimInfo(AlignedDimension dim)
{
DimType = dim.GetType().Name;
XLine1Point = dim.XLine1Point; //标注第一点
XLine2Point = dim.XLine2Point; //标注的第二点
DimLinePoint = dim.DimLinePoint;//确认点,在第二点下
DimensionStyle = dim.DimensionStyle;//标注样式
DimLength = dim.Measurement; //测量距离
DimScale = dim.Dimlfac; //线性比例
DimAngle = -(Pi2 - XLine1Point.GetAngle2XAxis(XLine2Point)); //标注角度
DimLinePointN = DimPointN(XLine1Point, DimLinePoint, DimAngle); //求未知点
Dimscale = dim.Dimscale;//全局比例
}
public DimInfo(RotatedDimension dim)
{
DimType = dim.GetType().Name;
XLine1Point = dim.XLine1Point; //标注第一点
XLine2Point = dim.XLine2Point; //标注的第二点
DimLinePoint = dim.DimLinePoint;//确认点,在第二点下
DimensionStyle = dim.DimensionStyle;//标注样式
DimLength = dim.Measurement; //测量距离
DimScale = dim.Dimlfac; //线性比例
DimAngle = dim.Rotation; //标注角度
DimLinePointN = DimPointN(XLine1Point, DimLinePoint, DimAngle);//求未知点
Dimscale = dim.Dimscale; //全局比例
}
}
零零散散的子函数
/// <summary>
/// 标注链式反应器
/// </summary>
/// <param name="ed"></param>
/// <param name="ent"></param>
/// <param name="tr"></param>
/// <returns></returns>
public static List<ObjectId> ChainReactor(this Editor ed, Entity ent, Transaction tr)
{
//清空选择集
ed.SetImpliedSelection(new ObjectId[0]);
//获取标注的后面两个点,然后通过这两个点获取选中标注样式
var dimInfoA = ent.GetDimInfo();
//标注点,如果含有则选取
var dimpts = new List<Point3d>() { dimInfoA.DimLinePoint, dimInfoA.DimLinePointN };
//链式选择根据做个选择集
var ssids = new List<ObjectId>();
//利用ssget将标注两点的图元选中
//创建选择集过滤器，只选择标注
TypedValue[] filList = new TypedValue[]
{
new TypedValue((int)DxfCode.Start, "DIMENSION")
};
SelectionFilter filter = new SelectionFilter(filList);
var ss = ed.SelectAll(filter);
if (ss.Status != PromptStatus.OK)
{
return null;
}
var ss1ids = ss.Value.GetObjectIds().ToList();
Tolerance oldtol = Tolerance.Global; //旧容差
Tolerance.Global = new Tolerance(1e-6, 1e-6);//新容差
bool fa = true;
while (fa)
{
fa = false;
foreach (ObjectId id in ss1ids.ToArray())
{
Entity dimN = id.ToEntity(tr);
DimInfo dimInfoN = dimN.GetDimInfo();
if (dimInfoN != null)
{
if (dimpts.Contains(dimInfoN.DimLinePoint) || dimpts.Contains(dimInfoN.DimLinePointN))
{
double an = Math.Abs(dimInfoA.DimAngle - dimInfoN.DimAngle);
if (an < 1e-10 || Math.Abs(an - Math.PI) < 1e-10) //目标向量与X的夹角 || 目标逆向量与X的夹角
{
dimpts.Add(dimInfoN.DimLinePoint);
dimpts.Add(dimInfoN.DimLinePointN);
ssids.Add(id);//加入选择集
ss1ids.Remove(id);
fa = true;
}
}
}
}
//选择集在遍历的时候是有顺序的,但是点选并不一定在末尾位置,可能在中间,
//所以通过点表判断前面的图元时,因为点表中并不存在邻点,所以出现链式选择失败.
//一,通过向量判断,但是不在链条的同向量标注也会被选择上.
//二,通过反向遍历一次,但是会增加时间,之所以要循环是因为若1,2的2在第一次没有加入,那么543这样加入了,导致链式选择少了..
ss1ids.Reverse();
}
Tolerance.Global = oldtol;//恢复旧容差
return ssids;
}
/// <summary>
/// 获取标注链条所有的标注两个确认点
/// </summary>
public static IEnumerable<Point3d> GetDimLinePoints(Transaction tr, IEnumerable<ObjectId> idArr)
{
var dimPointList = new List<Point3d>();
foreach (var id in idArr)
{
Entity dimN = id.ToEntity(tr);
DimInfo dimInfoN = dimN.GetDimInfo();
dimPointList.Add(dimInfoN.DimLinePoint);
dimPointList.Add(dimInfoN.DimLinePointN);
}
return dimPointList;
}
/// <summary>
/// 获取坐标系统三维
/// </summary>
/// <param name="ed"></param>
/// <param name="wcs"></param>
/// <param name="ucs"></param>
public static void GetWcsUcs(this Editor ed, out CoordinateSystem3d wcs, out CoordinateSystem3d ucs)
{
Matrix3d Ide_wcs = Matrix3d.Identity;//获取世界坐标系
wcs = Ide_wcs.CoordinateSystem3d;
Matrix3d used_ucs = ed.CurrentUserCoordinateSystem;//当前用户坐标系
ucs = used_ucs.CoordinateSystem3d;
}
(完)
