The instance count of entities such as IMAGE is incorrect.

[woodbook666]

For classes such as IMAGE, the value of group code 91, which indicates the instance count, appears to become 0 in version 3.6.35 even though instances actually exist.

It works correctly in version 3.4.9.

As a result, images sometimes fail to display correctly in DWG TrueView.

using System;
using System.IO;
using ACadSharp;
using ACadSharp.IO;
using ACadSharp.Entities;
using ACadSharp.Objects;
using CSMath;

public static class B
{
    public static void Run(string outDxf)
    {
        // 画像のピクセルサイズを取得
        var bytes = File.ReadAllBytes(@"C:\test\acadsharp_image_bug\sample.png");
        int pw = (bytes[16] << 24) | (bytes[17] << 16) | (bytes[18] << 8) | bytes[19];
        int ph = (bytes[20] << 24) | (bytes[21] << 16) | (bytes[22] << 8) | bytes[23];

        var doc = new CadDocument(ACadVersion.AC1032);

        var def = new ImageDefinition
        {
            FileName = "sample.png",
            Name = Guid.NewGuid().ToString(),
            IsLoaded = true,
            Size = new XY(pw, ph),
        };

        var img = new RasterImage(def)
        {
            InsertPoint = new XYZ(0, 0, 0),
            UVector = new XYZ(1, 0, 0),
            VVector = new XYZ(0, 1, 0),
            Size = new XY(pw, ph),
            Flags = ImageDisplayFlags.ShowImage,
            ClipType = ClipType.Rectangular,
            ClippingState = false,
        };
        img.ClipBoundaryVertices.Add(new XY(-0.5, -0.5));
        img.ClipBoundaryVertices.Add(new XY(pw - 0.5, ph - 0.5));
        doc.ModelSpace.Entities.Add(img);

        using (var w = new DxfWriter(outDxf, doc, false)) w.Write();
        Console.WriteLine("wrote " + outDxf);
    }

    public static void Main()
    {
        Run(@"C:\test\acadsharp_image_bug\image.dxf");
    }
}

image_bug.zip

[DomCR]

Hi @woodbook666,

I'll open a branch to take a look.

Thanks for the report!