how to jig a bitmap

reithinger — Wed, 09 Apr 2025 08:29:08 GMT

Hi,

I use the QRCoder nugetpackage.

That means that i have a bitmap (this is actual not save)

How can I jig this bitmap in my drawing (the bitmap is attached to the mouse), the user must select the point where he wants to have the image.

By next click is the Image in the drawing.

Should i save the bitmap as a rasterimage, can i use it dynamics ?

Thanks for your help

Fabrice

Re: how to jig a bitmap

ActivistInvestor — Wed, 09 Apr 2025 17:35:26 GMT

Unless there is a pressing need to see the actual QRCode while dragging, why not just drag the outline/boundary (as a polyline)?

Otherwise, you can use the Geometry.Image() method for drawing bitmaps using a DrawJig.

You can find an example of doing this here (generated by Claude, and not tested).

Re: how to jig a bitmap

reithinger — Thu, 10 Apr 2025 05:39:55 GMT

Hi ActivistInvestor,

I do it with your first Idea. I drag the outline/boundary and i think it's a good solution. So the user can be define himself the heigth anf width he want.

I would test the other link from Claude. It's interesting me.

Thanks

Re: how to jig a bitmap

_gile — Sat, 12 Apr 2025 13:56:22 GMT

@reithinger a écrit :

Hi,

I use the QRCoder nugetpackage.

That means that i have a bitmap (this is actual not save)

You can use QRCoder to create a hatch figuring the QRCode or a block containg this hatch which is easier to scale and jig.

using Autodesk.AutoCAD.Colors; using Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.Geometry; using Autodesk.AutoCAD.Runtime; using QRCoder; using System.Collections; using System.Collections.Generic; namespace Gile.AutoCAD.QRCoder { /// <summary> /// Provides methods to create AutoCAD entities (Hatch or Block) representing a QRCode. /// Uses QRCOder library (https://github.com/codebude/QRCoder/wiki/How-to-use-QRCoder). /// </summary> public class BlockQRCoder { readonly List<BitArray> matrix; readonly string plainText; readonly int size; /// <summary> /// Gets or sets the background color. /// </summary> public Color BackgroundColor { get; set; } = Color.FromRgb(255, 255, 255); /// <summary> /// Gets or sets the foreground color. /// </summary> public Color ForegroundColor { get; set; } = Color.FromRgb(0, 0, 0); /// <summary> /// Creates a new intance of BlockQRCoder. /// Requires the same parameters as QRCodeGenerator.CreateQrCode method. /// </summary> /// <param name="plainText">Text which shall be encoded in the QR Code.</param> /// <param name="eccLevel">Error correction level. Either L (7%), M (15%), Q (25%) or H (30%).</param> /// <param name="forceUtf8">Enables to force text encoding in UTF-8.</param> /// <param name="utf8BOM">Enables to set ByteOrderMark (BOM) when QRCoder uses UTF-8 for text-encoding</param> /// <param name="eciMode">Allows to specify a fixed EciMode.</param> /// <param name="requestedVersion">If set other than default (= -1), it will set a fixed QR code version.</param> public BlockQRCoder( string plainText, QRCodeGenerator.ECCLevel eccLevel = QRCodeGenerator.ECCLevel.Q, bool forceUtf8 = false, bool utf8BOM = false, QRCodeGenerator.EciMode eciMode = QRCodeGenerator.EciMode.Default, int requestedVersion = -1) { this.plainText = plainText; using (var qrGenerator = new QRCodeGenerator()) using (QRCodeData qrCodeData = qrGenerator.CreateQrCode(plainText, eccLevel, forceUtf8, utf8BOM, eciMode, requestedVersion)) { matrix = qrCodeData.ModuleMatrix; size = matrix.Count; } } /// <summary> /// Creates a new block definition. /// </summary> /// <param name="db">Database which owns the block.</param> /// <param name="blockName">Name of the block (creates an anonymous block if null).</param> /// <returns>The objectId of the block definition.</returns> public ObjectId CreateBlock(Database db, string blockName = null, bool plainTextAsAttribute = false) { ObjectId blockId; using (var tr = new OpenCloseTransaction()) { if (string.IsNullOrEmpty(blockName)) blockName = "*U"; var blockTable = (BlockTable)tr.GetObject(db.BlockTableId, OpenMode.ForRead); if (blockTable.Has(blockName)) throw new Exception(ErrorStatus.AlreadyInDB); var btr = new BlockTableRecord { Name = blockName }; tr.GetObject(db.BlockTableId, OpenMode.ForWrite); blockId = blockTable.Add(btr); tr.AddNewlyCreatedDBObject(btr, true); var solid = GetBackgroundSolid(); btr.AppendEntity(solid); tr.AddNewlyCreatedDBObject(solid, true); var hatch = GetHatch(); btr.AppendEntity(hatch); tr.AddNewlyCreatedDBObject(hatch, true); if (plainTextAsAttribute) { var attDef = new AttributeDefinition(Point3d.Origin, plainText, "TEXT", "", db.Textstyle) { Constant = true, Height = 2.5, Justify = AttachmentPoint.BaseCenter, AlignmentPoint = new Point3d(size / 2.0, -5.0, 0.0) }; btr.AppendEntity(attDef); tr.AddNewlyCreatedDBObject(attDef, true); } tr.Commit(); } return blockId; } /// <summary> /// Gets a Solid figuring the QR Code background. /// </summary> /// <returns>the newly created Solid.</returns> public Solid GetBackgroundSolid() => new Solid( new Point3d(0.0, 0.0, 0.0), new Point3d(size, 0.0, 0.0), new Point3d(0.0, size, 0.0), new Point3d(size, size, 0.0)) { Color = BackgroundColor }; /// <summary> /// Gets a Hatch figuring the QR Code. /// </summary> /// <returns>The newly created Hatch.</returns> public Hatch GetHatch() { var hatch = new Hatch(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { if (matrix[i][j]) { HatchLoop loop = new HatchLoop(HatchLoopTypes.Polyline); double x = i; double y = size - j; loop.Polyline.Add(new BulgeVertex(new Point2d(x, y), 0.0)); loop.Polyline.Add(new BulgeVertex(new Point2d(x + 1.0, y), 0.0)); loop.Polyline.Add(new BulgeVertex(new Point2d(x + 1.0, y - 1.0), 0.0)); loop.Polyline.Add(new BulgeVertex(new Point2d(x, y - 1.0), 0.0)); loop.Polyline.Add(new BulgeVertex(new Point2d(x, y), 0.0)); hatch.AppendLoop(loop); } } } hatch.SetHatchPattern(HatchPatternType.PreDefined, "SOLID"); hatch.Color = ForegroundColor; hatch.EvaluateHatch(true); return hatch; } } }

Re: how to jig a bitmap

ActivistInvestor — Sun, 13 Apr 2025 11:38:35 GMT

@reithinger wrote:
Hi ActivistInvestor,
I do it with your first Idea. I drag the outline/boundary and i think it's a good solution. So the user can be define himself the heigth anf width he want.
I would test the other link from Claude. It's interesting me.
Thanks

Here's one way to enable dragging of an image's contents, where the dragging is done using a Jig:

// using Autodesk,AutoCAD.Internal; var vsWireframe = Utils.visualStyleId("Wireframe"); var cvpvsId = Utils.GetCurrentViewportVisualStyleId(); Utils.SetCurrentViewportVisualStyle(vsWireframe); try { var result = editor.Drag(myJig); // Call drag and pass in your jig; } finally { Utils.SetCurrentViewportVisualStyle(cvpvsId); }

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