c# CAD二次開發(fā) 模擬CAD移動圖形， 通過圓現(xiàn)在注記，改變圖形顏色
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Application = Autodesk.AutoCAD.ApplicationServices.Application;
using System.Windows.Forms;

namespace _7_屬性查找
{
public class Class1
{
///
/// 通過文本和擴(kuò)展屬性進(jìn)行搜索
///
[CommandMethod(“yesee”)]
public void selectdemo()
{
Form1selecte form = new Form1selecte();
form.Show();
}
///
/// 更新圖形顏色
///
///
private void changecolor(SelectionSet sset)
{
ObjectId[] ids = sset.GetObjectIds();
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
for (int i = 0; i < ids.Length; i++)
{
Entity ent = (Entity)ids[i].GetObject(OpenMode.ForWrite);

                ent.ColorIndex = 1;
                DBText textEntity = ent as DBText;
                string sTxt = textEntity.TextString;
            }
            trans.Commit();
        }
    }
    /// <summary>
    /// 通過選擇圓來選擇
    /// </summary>
    [CommandMethod("yese1")]
    public void selectdemo1()
    {
        Database db = HostApplicationServices.WorkingDatabase;
        Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
        //通過過濾器選擇圓
        TypedValue[] values = new TypedValue[]
        {
            new TypedValue((int)DxfCode.Start,"circle")//選擇圖形為圓
        };
        SelectionFilter filter = new SelectionFilter(values);
        PromptSelectionResult psr = ed.GetSelection(filter);
        List<ObjectId> ids = new List<ObjectId>();
        if (psr.Status == PromptStatus.OK)
        {
            //遍歷每個圓，將每個
            SelectionSet sset = psr.Value;
            List<Point3d> points = this.getpoint(sset);
            for (int i = 0; i < points.Count; i++)
            {
                PromptSelectionResult ss1 = ed.SelectCrossingWindow(points.ElementAt(i), points.ElementAt(i));
                ids.AddRange(ss1.Value.GetObjectIds());
            }
        }
        this.changecolor1(ids);
    }
    /// <summary>
    /// 通過頂點(diǎn)選擇集
    /// </summary>
    /// <param name="sset"></param>
    /// <returns></returns>
    private List<Point3d> getpoint(SelectionSet sset)
    {
        List<Point3d> points = new List<Point3d>();
        ObjectId[] ids = sset.GetObjectIds();
        Database db = HostApplicationServices.WorkingDatabase;
        using (Transaction trans = db.TransactionManager.StartTransaction())
        {
            for (int i = 0; i < ids.Length; i++)
            {
                Entity ent = (Entity)ids[i].GetObject(OpenMode.ForWrite);
                Point3d creter = ((Circle)ent).Center;
                double radius = ((Circle)ent).Radius;
                points.Add(new Point3d(creter.X + radius, creter.Y, creter.Z));
            }
            trans.Commit();
        }
        return points;
    }
    /// <summary>
    /// 更新圖形顏色
    /// </summary>
    /// <param name="sset"></param>
    private void changecolor1(List<ObjectId> ids)
    {
        Database db = HostApplicationServices.WorkingDatabase;
        using (Transaction trans = db.TransactionManager.StartTransaction())
        {
            for (int i = 0; i < ids.Count; i++)
            {
                Entity ent = (Entity)ids[i].GetObject(OpenMode.ForWrite);
                ent.ColorIndex = 3;
            }
            trans.Commit();
        }
    }
    /// <summary>
    /// 動態(tài)交互,移動圖形
    /// </summary>
    [CommandMethod("yemove", CommandFlags.UsePickSet)]
    public void yemove()
    {
        Database db = HostApplicationServices.WorkingDatabase;
        Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
        //選擇在命令前的圖形
        PromptSelectionResult psr = ed.SelectImplied();
        //如果執(zhí)行命令前沒有選擇對象，則執(zhí)行選擇
        if (psr.Status != PromptStatus.OK)
        {
            psr = ed.GetSelection();
        }
        if (psr.Status != PromptStatus.OK) return;
        //獲取用戶指定的基礎(chǔ)點(diǎn)
        Point3d pointbase = new Point3d(0, 0, 0);
        PromptPointOptions ppo = new PromptPointOptions("\n 指定基點(diǎn)或[位移(D)]<位移>:");
        ppo.AllowNone = true;
        PromptPointResult ppr = ed.GetPoint(ppo);
        //判斷用戶指定基礎(chǔ)點(diǎn)的輸入
        if (ppr.Status == PromptStatus.Cancel) return;
        if (ppr.Status == PromptStatus.OK) pointbase = ppr.Value;

        //獲取選擇圖形的圖形對象
        List<Entity> entlist = new List<Entity>();
        //把選中的ID賦給ids
        ObjectId[] ids = psr.Value.GetObjectIds();
        entlist = this.getentity(ids);
        //改變源對象的顏色
        this.lowcolor(entlist, 211);
        //聲明一個移動類
        MoveJig movejig = new MoveJig(entlist, pointbase);
        PromptResult pr = ed.Drag(movejig);
    }
    /// <summary>
    /// 將選擇的對象轉(zhuǎn)成Entity
    /// </summary>
    /// <param name="ids">圖形列表</param>
    /// <returns></returns>
    private List<Entity> getentity(ObjectId[] ids)
    {
        Database db = HostApplicationServices.WorkingDatabase;
        List<Entity> enlist = new List<Entity>();
        using (Transaction trans = db.TransactionManager.StartTransaction())
        {
            for (int i = 0; i < ids.Length; i++)
            {
                Entity ent = (Entity)ids[i].GetObject(OpenMode.ForWrite);
                enlist.Add(ent);
            }
        }
        return enlist;
    }
    /// <summary>
    /// 改變圖形對象的顏色
    /// </summary>
    /// <param name="enlist">圖形對象</param>
    /// <param name="colorindex">顏色值</param>
    private void lowcolor(List<Entity> enlist, int colorindex)
    {
        Database db = HostApplicationServices.WorkingDatabase;
        using (Transaction trans = db.TransactionManager.StartTransaction())
        {
            for (int i = 0; i < enlist.Count; i++)
            {
                Entity ent = (Entity)enlist[i].ObjectId.GetObject(OpenMode.ForWrite);
                ent.ColorIndex = colorindex;
            }
            trans.Commit();
        }
    }
}

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