Topic: Jigs to Create Multiple Enity's

[GumbyCAD]

Hi Team,

I was wondering if a Jig could support multiple object creation?

I.e. Draw a rectangle and  line from Corner to Corner as part of the jig.

All the examples I have found only show the creation of a single entity.

Stephan

[gile]

Hi,

To deal with multiple entities, you have to inherit from drawJig rather than EntityJig. Google for DrawJig to find examples.

[gile]

Hi,

Here's a little snippet to draw a rectangle and a line between the specified corners. It works on the current UCS plane.

Code - C#: [Select]

1. using Autodesk.AutoCAD.ApplicationServices;
2. using Autodesk.AutoCAD.DatabaseServices;
3. using Autodesk.AutoCAD.EditorInput;
4. using Autodesk.AutoCAD.Geometry;
5. using Autodesk.AutoCAD.Runtime;
6.  
7. [assembly: CommandClass(typeof(RectangleDrawJig.CommandMethods))]
8.  
9. namespace RectangleDrawJig
10. {
11.     public class CommandMethods
12.     {
13.         [CommandMethod("Test", CommandFlags.Modal)]
14.         public void Test()
15.         {
16.             Document doc = Application.DocumentManager.MdiActiveDocument;
17.             Database db = doc.Database;
18.             Editor ed = doc.Editor;
19.  
20.             PromptPointResult ppr = ed.GetPoint("\nSpecify the first corner: ");
21.             if (ppr.Status != PromptStatus.OK) return;
22.             Matrix3d ucs = ed.CurrentUserCoordinateSystem;
23.             Point3d basePt = ppr.Value;
24.             using (Transaction tr = db.TransactionManager.StartTransaction())
25.             using(Line line = new Line(basePt, basePt))
26.             using(Polyline pline = new Polyline(4))
27.             {
28.                 Point2d basePt2d = new Point2d(basePt.X, basePt.Y);
29.                 pline.AddVertexAt(0, basePt2d, 0.0, 0.0, 0.0);
30.                 pline.AddVertexAt(1, basePt2d, 0.0, 0.0, 0.0);
31.                 pline.AddVertexAt(2, basePt2d, 0.0, 0.0, 0.0);
32.                 pline.AddVertexAt(3, basePt2d, 0.0, 0.0, 0.0);
33.                 pline.Closed = true;
34.                 RectangleJig jig = new RectangleJig(pline, line, ucs);
35.                 PromptResult pr = ed.Drag(jig);
36.                 if (pr.Status == PromptStatus.OK)
37.                 {
38.                     BlockTableRecord btr =
39.                         (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
40.                     pline.TransformBy(ucs);
41.                     btr.AppendEntity(pline);
42.                     tr.AddNewlyCreatedDBObject(pline, true);
43.                     line.TransformBy(ucs);
44.                     btr.AppendEntity(line);
45.                     tr.AddNewlyCreatedDBObject(line, true);
46.                 }
47.                 tr.Commit();
48.             }
49.         }
50.  
51.         class RectangleJig : DrawJig
52.         {
53.             private Polyline pline;
54.             private Line line;
55.             private Matrix3d ucs2wcs, wcs2ucs;
56.             private Point3d dragPt;
57.             private Point2d basePt;
58.  
59.             public RectangleJig(Polyline pline, Line line, Matrix3d ucs)
60.             {
61.                 this.pline = pline;
62.                 this.line = line;
63.                 this.ucs2wcs = ucs;
64.                 this.wcs2ucs = ucs.Inverse();
65.                 this.dragPt = line.EndPoint;
66.                 this.basePt = pline.GetPoint2dAt(0);
67.             }
68.  
69.             protected override bool WorldDraw(Autodesk.AutoCAD.GraphicsInterface.WorldDraw draw)
70.             {
71.                 Autodesk.AutoCAD.GraphicsInterface.WorldGeometry geo = draw.Geometry;
72.                 if (geo != null)
73.                 {
74.                     geo.PushModelTransform(ucs2wcs);
75.                     geo.Draw(line);
76.                     geo.Draw(pline);
77.                     geo.PopModelTransform();
78.                 }
79.                 return true;
80.             }
81.  
82.             protected override SamplerStatus Sampler(JigPrompts prompts)
83.             {
84.                 PromptPointResult ppr = prompts.AcquirePoint("\nSpecify the opposite corner: ");
85.                 if (ppr.Value.IsEqualTo(dragPt))
86.                     return SamplerStatus.NoChange;
87.                 dragPt = ppr.Value;
88.                 Update();
89.                 return SamplerStatus.OK;
90.             }
91.  
92.             private void Update()
93.             {
94.                 Point3d pt = dragPt.TransformBy(wcs2ucs);
95.                 line.EndPoint = pt;
96.                 pline.SetPointAt(1, new Point2d(pt.X, basePt.Y));
97.                 pline.SetPointAt(2, new Point2d(pt.X, pt.Y));
98.                 pline.SetPointAt(3, new Point2d(basePt.X, pt.Y));
99.             }
100.         }
101.  
102.     }
103. }
104.