command "burst" working .net code

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nekitip:
Hi all,
I've found some time, and tried to add some functionality to some old plugin that I use.
I've tried to implement burst functionality (as in command "BURST"). I did find some code examples, such as for explode https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2015/ENU/AutoCAD-NET/files/GUID-A853CD73-58A9-4380-B8E2-B3451C94C46B-htm.html and burst (the thing that I'm trying to do) http://adn-cis.org/programmnaya-imitacziya-komandyi-burst.html
However, if that code works, than I've missed some tiny tiny bit somewhere, since I cannot make it work (color remains wrong).

So, I wrote something, and I'm sharing here. The only issue I have, and it's a big one:
-is it safe to copy color the way i did?
I do not see objectid so I know that color is not db resident, but i do see "unmanaged object" pointer (or something). And I'm just recreational developer, so...

--- Code - vb.net: ---Private Shared Sub fillTextFromText(ByRef blockRef As BlockReference, ByRef textFrom As DBText, ByRef textTo As DBText) textTo.Height = textFrom.Height textTo.Position = textFrom.Position textTo.Rotation = textFrom.Rotation textTo.TextString = textFrom.TextString textTo.TextStyleId = textFrom.TextStyleId textTo.WidthFactor = textFrom.WidthFactor textTo.VerticalMode = textFrom.VerticalMode textTo.HorizontalMode = textFrom.HorizontalMode textTo.Normal = textFrom.Normal textTo.Thickness = textFrom.Thickness textTo.Oblique = textFrom.Oblique If Not (textFrom.IsDefaultAlignment) Then textTo.AlignmentPoint = textFrom.AlignmentPoint End If textTo.SetPropertiesFrom(textFrom) End Sub Private Shared Sub explodeBlock(btr As BlockTableRecord, blockDef As BlockTableRecord, trans As Transaction, blockRef As BlockReference) Using explodedObjects As New DBObjectCollection Dim toAddColl As DBObjectCollection = New DBObjectCollection() For Each entId As ObjectId In blockDef If entId.ObjectClass.Name = "AcDbAttributeDefinition" Then Dim attDef As AttributeDefinition = trans.GetObject(entId, OpenMode.ForRead) If (attDef.Constant AndAlso Not attDef.Invisible) Then If attDef.IsMTextAttributeDefinition Then Dim text As MText = New MText() text.CopyFrom(attDef.MTextAttributeDefinition) 'no new, so no dispose? text.TransformBy(blockRef.BlockTransform) toAddColl.Add(text) Else Dim text As DBText = New DBText() fillTextFromText(blockRef, attDef, text) text.TransformBy(blockRef.BlockTransform) toAddColl.Add(text) End If End If End If Next For Each attRefId As ObjectId In blockRef.AttributeCollection Dim attRef As AttributeReference = trans.GetObject(attRefId, OpenMode.ForRead) If attRef.Invisible = False Then If attRef.IsMTextAttribute Then Dim mt As MText = attRef.MTextAttribute 'no new, so no dispose? Dim text As MText = New MText() text.CopyFrom(mt) toAddColl.Add(text) Else Dim textD As DBText = New DBText() fillTextFromText(blockRef, attRef, textD) toAddColl.Add(textD) End If End If Next blockRef.Explode(explodedObjects) For Each ent As Entity In explodedObjects If Not (ent.GetType = GetType(AttributeDefinition)) Then toAddColl.Add(ent) Next For Each ent As Entity In toAddColl If ent.Layer = "0" Then Dim entColOriginal = ent.Color ent.SetPropertiesFrom(blockRef) If entColOriginal.ColorIndex > 0 Then ent.Color = entColOriginal End If 'text.TransformBy(blockRef.BlockTransform) btr.AppendEntity(ent) trans.AddNewlyCreatedDBObject(ent, True) Next 'blockRef.UpgradeOpen() 'blockRef.Erase() End Using End Sub

nekitip:
...I've also found this code. https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2016/ENU/AutoCAD-NET/files/GUID-8ABF5190-C179-4D45-9473-3C78897D352E-htm.html
It appears to me that color object can be copied with no problem, and, as such, my "burst" .NET code is safe, but... again, I would like to hear other oppinions.

Atook:

--- Quote from: nekitip on January 09, 2019, 03:53:30 AM ---...It appears to me that color object can be copied with no problem, and, as such, my "burst" .NET code is safe, but... again, I would like to hear other oppinions.

--- End quote ---

Hey nekitip, I do something similar, .colorindex is just an int property that can be set. You should be fine as long as the color is between 0 and 256.

--- Code - C#: ---int color;...if (color>=0 && color<=256){ br.ColorIndex = color;}

nekitip:
Atook, thank you for your anwser, that seems well safe, and will cover 99% of all colors.
I will play it a little bit, just to see what happens if there are RGB colors, and all of bylayer, byblock combinations...

Atook:
for colorIndex, 0=BYBLOCK and 256=BYLAYER.

for RGB colors, you can use Color.FromRgb(23, 54, 232);

There's a nice primer on it here

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