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C3D-0294 · 260612 C-Store: what the vicinity raster overlaps on 22X17 done

READ-ONLY holistic check. Every entity whose extents intersect the raster, with draw order, so covering vs covered is factual rather than assumed.

C# payload

// HOLISTIC read of 22X17: every pair of entities whose extents OVERLAP, with draw order.
// The question is never "where is X vs the one thing I assumed" - it is "what does X collide
// with on the whole sheet".
var bt = (BlockTable)Tx.GetObject(Db.BlockTableId, OpenMode.ForRead);
foreach (ObjectId btrId in bt) {
    var rec = (BlockTableRecord)Tx.GetObject(btrId, OpenMode.ForRead);
    if (!rec.IsLayout) continue;
    var lay = (Layout)Tx.GetObject(rec.LayoutId, OpenMode.ForRead);
    if (lay.LayoutName != "22X17") continue;

    // collect every entity with extents + its draw-order position
    var items = new List<Tuple<ObjectId, string, Extents3d, int>>();
    int order = 0;
    foreach (ObjectId id in rec) {
        var ent = Tx.GetObject(id, OpenMode.ForRead) as Autodesk.AutoCAD.DatabaseServices.Entity;
        if (ent == null) continue;
        order++;
        var vp = ent as Viewport;
        if (vp != null) continue;                    // viewports overlap everything by design
        Extents3d e;
        try { e = ent.GeometricExtents; } catch { continue; }
        string what = ent.GetType().Name;
        var dt = ent as DBText; if (dt != null) what = "TEXT \"" + dt.TextString.Substring(0, Math.Min(30, dt.TextString.Length)) + "\"";
        var mt = ent as MText; if (mt != null) what = "MTEXT \"" + mt.Contents.Replace("\n", " ").Substring(0, Math.Min(30, mt.Contents.Length)) + "\"";
        var br = ent as BlockReference; if (br != null) what = "BLOCK " + br.Name;
        var ri = ent as RasterImage; if (ri != null) what = "RASTER";
        items.Add(Tuple.Create(id, what, e, order));
    }

    // the raster(s): what do they cover?
    foreach (var a in items) {
        if (!a.Item2.StartsWith("RASTER")) continue;
        var ra = a.Item3;
        Log(string.Format("RASTER [{0}] ({1:F3},{2:F3})-({3:F3},{4:F3}) draw-order {5}",
            a.Item1.Handle, ra.MinPoint.X, ra.MinPoint.Y, ra.MaxPoint.X, ra.MaxPoint.Y, a.Item4));
        Log("  overlapping entities (draw order > raster = drawn ON TOP of it; < = raster covers them):");
        foreach (var b in items) {
            if (b.Item1 == a.Item1) continue;
            var rb = b.Item3;
            bool ox = rb.MinPoint.X < ra.MaxPoint.X && rb.MaxPoint.X > ra.MinPoint.X;
            bool oy = rb.MinPoint.Y < ra.MaxPoint.Y && rb.MaxPoint.Y > ra.MinPoint.Y;
            if (!ox || !oy) continue;
            Log(string.Format("    {0} [{1}] {2,-40} ({3:F3},{4:F3})-({5:F3},{6:F3}) order {7}",
                b.Item4 < a.Item4 ? "RASTER-COVERS" : "SITS-ON-RASTER",
                b.Item1.Handle, b.Item2, rb.MinPoint.X, rb.MinPoint.Y, rb.MaxPoint.X, rb.MaxPoint.Y, b.Item4));
        }
    }
}

Result

RASTER [2EC1F] (17.473,9.046)-(21.434,13.007) draw-order 43
  overlapping entities (draw order > raster = drawn ON TOP of it; < = raster covers them):
    RASTER-COVERS [23273] BLOCK SS_BLOCK_11X17                     (0.268,0.230)-(21.777,16.707) order 2