Topic: set parameters and count blocks in associative array

[Eycki]

Hello, I am wondering if it is possible to approach the 2012 Array from AutoCAD and set its properties with .NET
I haven't found a solution on the internet yet, so at this moment I'm using it with the SendStringToExecute command.  It does the job but it's a lot slower as it could be with proper coding.

[kaefer]

Hello, I am wondering if it is possible to approach the 2012 Array from AutoCAD and set its properties with .NET

The keyword is Associative Array, like that found here.

[Eycki]

Hello, I am wondering if it is possible to approach the 2012 Array from AutoCAD and set its properties with .NET

The keyword is Associative Array, like that found here.

I see this article is pretty recent , that is why I didnt found it a couple months ago
Thanks a lot!

[Eycki]

Hello, I am wondering if it is possible to approach the 2012 Array from AutoCAD and set its properties with .NET

The keyword is Associative Array, like that found here.

Do you have any idea how to count blocks in an associative array?

[Kerry]

Yes

Code - C#: [Select]

1. [Wrapper("AcDbAssocArrayPathParameters"), TypeDescriptionProvider("Autodesk.AutoCAD.ComponentModel.TypeDescriptionProvider`1[[Autodesk.AutoCAD.DatabaseServices.AssocArrayPathParameters, acdbmgd]], acdbmgd")]
2. public class AssocArrayPathParameters : AssocArrayCommonParameters
3. {
4.     // Methods
5.     public AssocArrayPathParameters();
6.     protected internal AssocArrayPathParameters(IntPtr unmanagedPointer, [MarshalAs(UnmanagedType.U1)] bool autoDelete);
7.     public AssocArrayPathParameters(double itemSpacing, double rowSpacing, double levelSpacing, int itemCount, int rowCount, int levelCount, double rowElevation);
8.     public double GetEndOffset(out string expression, out string evaluatorId);
9.     internal unsafe AcDbAssocArrayPathParameters* GetImpObj();
10.     public int GetItemCount(out string expression, out string evaluatorId);
11.     public double GetItemSpacing(out string expression, out string evaluatorId);
12.     public double GetStartOffset(out string expression, out string evaluatorId);
13.     public void SetEndOffset(double offset, string expression, string evaluatorId);
14.     public void SetItemCount(int count, string expression, string evaluatorId);
15.     public void SetItemSpacing(double spacing, string expression, string evaluatorId);
16.     public void SetStartOffset(double offset, string expression, string evaluatorId);
17.  
18.     // Properties
19.     public bool AlignItems { [return: MarshalAs(UnmanagedType.U1)] get; [param: MarshalAs(UnmanagedType.U1)] set; }
20.     public double EndOffset { get; set; }
21.     public int ItemCount { get; set; }
22.     public double ItemSpacing { get; set; }
23.     public MethodType Method { get; set; }
24.     public EdgeRef Path { get; set; }
25.     public bool PathDirection { [param: MarshalAs(UnmanagedType.U1)] set; }
26.     public double StartOffset { get; set; }
27.  
28.     // Nested Types
29.     public enum MethodType
30.     {
31.         Divide,
32.         Measure
33.     }
34. }
35.  

Code - C#: [Select]

1. [TypeDescriptionProvider("Autodesk.AutoCAD.ComponentModel.TypeDescriptionProvider`1[[Autodesk.AutoCAD.DatabaseServices.AssocArrayCommonParameters, acdbmgd]], acdbmgd"), Wrapper("AcDbAssocArrayCommonParameters")]
2. public abstract class AssocArrayCommonParameters : AssocArrayParameters
3. {
4.     // Methods
5.     protected internal AssocArrayCommonParameters(IntPtr unmanagedPointer, [MarshalAs(UnmanagedType.U1)] bool autoDelete);
6.     internal unsafe AcDbAssocArrayCommonParameters* GetImpObj();
7.     public int GetLevelCount(out string expression, out string evaluatorId);
8.     public double GetLevelSpacing(out string expression, out string evaluatorId);
9.     public int GetRowCount(out string expression, out string evaluatorId);
10.     public double GetRowElevation(out string expression, out string evaluatorId);
11.     public double GetRowSpacing(out string expression, out string evaluatorId);
12.     public void SetLevelCount(int count, string expression, string evaluatorId);
13.     public void SetLevelSpacing(double spacing, string expression, string evaluatorId);
14.     public void SetRowCount(int count, string expression, string evaluatorId);
15.     public void SetRowElevation(double value, string expression, string evaluatorId);
16.     public void SetRowSpacing(double spacing, string expression, string evaluatorId);
17.  
18.     // Properties
19.     public Vector3d BaseNormal { get; set; }
20.     public FaceRef BasePlane { get; set; }
21.     public VertexRef BasePoint { get; set; }
22.     public int LevelCount { get; set; }
23.     public double LevelSpacing { get; set; }
24.     public int RowCount { get; set; }
25.     public double RowElevation { get; set; }
26.     public double RowSpacing { get; set; }
27. }
28.  

[Eycki]

The sample code that is downloadable on this page helped me a lot: http://through-the-interface.typepad.com/through_the_interface/2011/03/new-apis-in-autocad-2012.html

[Eycki]

OK, I made it work to create an associative array from a dynamic block which I modify first before taking it in the array.

What I want to do now is make a command that modifies parameters which includes replacing the source item thru a new blockreference that I import.  Also the rowspacing, rowcount, columnspacing and columncount will get new values.
To do this I actually delete the array and creat a new one on the same basepoint?  Which is the best solution?

Thanks in advance!

Yes

Code - C#: [Select]

1. [Wrapper("AcDbAssocArrayPathParameters"), TypeDescriptionProvider("Autodesk.AutoCAD.ComponentModel.TypeDescriptionProvider`1[[Autodesk.AutoCAD.DatabaseServices.AssocArrayPathParameters, acdbmgd]], acdbmgd")]
2. public class AssocArrayPathParameters : AssocArrayCommonParameters
3. {
4.     // Methods
5.     public AssocArrayPathParameters();
6.     protected internal AssocArrayPathParameters(IntPtr unmanagedPointer, [MarshalAs(UnmanagedType.U1)] bool autoDelete);
7.     public AssocArrayPathParameters(double itemSpacing, double rowSpacing, double levelSpacing, int itemCount, int rowCount, int levelCount, double rowElevation);
8.     public double GetEndOffset(out string expression, out string evaluatorId);
9.     internal unsafe AcDbAssocArrayPathParameters* GetImpObj();
10.     public int GetItemCount(out string expression, out string evaluatorId);
11.     public double GetItemSpacing(out string expression, out string evaluatorId);
12.     public double GetStartOffset(out string expression, out string evaluatorId);
13.     public void SetEndOffset(double offset, string expression, string evaluatorId);
14.     public void SetItemCount(int count, string expression, string evaluatorId);
15.     public void SetItemSpacing(double spacing, string expression, string evaluatorId);
16.     public void SetStartOffset(double offset, string expression, string evaluatorId);
17.  
18.     // Properties
19.     public bool AlignItems { [return: MarshalAs(UnmanagedType.U1)] get; [param: MarshalAs(UnmanagedType.U1)] set; }
20.     public double EndOffset { get; set; }
21.     public int ItemCount { get; set; }
22.     public double ItemSpacing { get; set; }
23.     public MethodType Method { get; set; }
24.     public EdgeRef Path { get; set; }
25.     public bool PathDirection { [param: MarshalAs(UnmanagedType.U1)] set; }
26.     public double StartOffset { get; set; }
27.  
28.     // Nested Types
29.     public enum MethodType
30.     {
31.         Divide,
32.         Measure
33.     }
34. }
35.  

Code - C#: [Select]

1. [TypeDescriptionProvider("Autodesk.AutoCAD.ComponentModel.TypeDescriptionProvider`1[[Autodesk.AutoCAD.DatabaseServices.AssocArrayCommonParameters, acdbmgd]], acdbmgd"), Wrapper("AcDbAssocArrayCommonParameters")]
2. public abstract class AssocArrayCommonParameters : AssocArrayParameters
3. {
4.     // Methods
5.     protected internal AssocArrayCommonParameters(IntPtr unmanagedPointer, [MarshalAs(UnmanagedType.U1)] bool autoDelete);
6.     internal unsafe AcDbAssocArrayCommonParameters* GetImpObj();
7.     public int GetLevelCount(out string expression, out string evaluatorId);
8.     public double GetLevelSpacing(out string expression, out string evaluatorId);
9.     public int GetRowCount(out string expression, out string evaluatorId);
10.     public double GetRowElevation(out string expression, out string evaluatorId);
11.     public double GetRowSpacing(out string expression, out string evaluatorId);
12.     public void SetLevelCount(int count, string expression, string evaluatorId);
13.     public void SetLevelSpacing(double spacing, string expression, string evaluatorId);
14.     public void SetRowCount(int count, string expression, string evaluatorId);
15.     public void SetRowElevation(double value, string expression, string evaluatorId);
16.     public void SetRowSpacing(double spacing, string expression, string evaluatorId);
17.  
18.     // Properties
19.     public Vector3d BaseNormal { get; set; }
20.     public FaceRef BasePlane { get; set; }
21.     public VertexRef BasePoint { get; set; }
22.     public int LevelCount { get; set; }
23.     public double LevelSpacing { get; set; }
24.     public int RowCount { get; set; }
25.     public double RowElevation { get; set; }
26.     public double RowSpacing { get; set; }
27. }
28.  

[kaefer]

What I want to do now is make a command that modifies parameters which includes replacing the source item thru a new blockreference that I import.

What happens if you
- select your AssocArray,
- use the GetParameters() method to obtain an AssocArrayParameters object,
- downcast that to AssocArrayPathParameters,
- try to modify it according to your wishes,
- and finally call the Commit() method on AssocArrayPathParameters?

Example in F#, I hope you'll get the gist:

Code: [Select]

let selectAnArray (ed : Editor) =
    let peo = new PromptEntityOptions("\nSelect an Associative Array: ")
    let per = ed.GetEntity peo
    if per.Status = PromptStatus.OK then
        if AssocArray.IsAssociativeArray per.ObjectId then
            Some per.ObjectId             
        else
            ed.WriteMessage("\nNot an Associative Array, please try again...")
            None
    else None

[<CommandMethod "ChangeItemCount">]
let changeItemCount() =
    let db = acadApp.DocumentManager.MdiActiveDocument.Database
    let ed = acadApp.DocumentManager.MdiActiveDocument.Editor
       
    match selectAnArray ed with
    | None -> ()
    | Some oid ->
        let array = AssocArray.GetAssociativeArray oid
        match array.GetParameters() with
        | :? AssocArrayPathParameters as p ->
            let pir =
                new PromptIntegerOptions(
                    "New value for ItemCount",
                    AllowNegative = false,
                    AllowZero = false,
                    DefaultValue = p.ItemCount,
                    UseDefaultValue = true )
                |> ed.GetInteger
            if pir.Status = PromptStatus.OK then
                p.ItemSpacing <- p.ItemSpacing * float p.ItemCount / float pir.Value
                p.ItemCount <- pir.Value
                p.Commit()
                AssocManager.EvaluateTopLevelNetwork(db, null, 0)
                |> ignore
        | _ -> ()

_{Edit: Commit() and example added.}