← Inbox

C3D-0271 · 260714 Huckaby: where is the paper in layout coordinates done

READ-ONLY. Layout origin 0,0 is the lower-left of the PRINTABLE area, not the paper, so margins offset everything. Reports paper and printable bounds in layout coordinates for both 17X11 and 11X17, plus where each title block actually sits.

C# payload

// Where is the PAPER in layout coordinates? Layout origin (0,0) is the lower-left of the
// PRINTABLE area, not the paper, so margins shift everything.
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 != "17X11" && lay.LayoutName != "11X17") continue;

    var m = lay.PlotPaperMargins;
    double pw = lay.PlotPaperSize.X/25.4, ph = lay.PlotPaperSize.Y/25.4;
    double ml = m.MinPoint.X/25.4, mb = m.MinPoint.Y/25.4, mr = m.MaxPoint.X/25.4, mt = m.MaxPoint.Y/25.4;
    Log("=== " + lay.LayoutName + " ===");
    Log("  media " + lay.CanonicalMediaName + string.Format("  paper {0:F3} x {1:F3}", pw, ph));
    Log(string.Format("  margins L{0:F3} B{1:F3} R{2:F3} T{3:F3}", ml, mb, mr, mt));
    Log(string.Format("  PRINTABLE area = {0:F3} x {1:F3}, and layout (0,0) is its lower-left",
        pw-ml-mr, ph-mb-mt));
    Log(string.Format("  => PAPER occupies layout coords x {0:F3}..{1:F3}, y {2:F3}..{3:F3}",
        -ml, -ml+pw, -mb, -mb+ph));
    Log(string.Format("  => PRINTABLE occupies x {0:F3}..{1:F3}, y {2:F3}..{3:F3}",
        0.0, pw-ml-mr, 0.0, ph-mb-mt));

    // where is the title block?
    foreach (ObjectId id in rec) {
        var br = Tx.GetObject(id, OpenMode.ForRead) as BlockReference;
        if (br == null) continue;
        var e = br.GeometricExtents;
        Log(string.Format("  BLOCK {0,-16} ({1:F3},{2:F3})-({3:F3},{4:F3})",
            br.Name, e.MinPoint.X, e.MinPoint.Y, e.MaxPoint.X, e.MaxPoint.Y));
    }
    Log("");
}

Result

=== 17X11 ===
  media ANSI_B_(17.00_x_11.00_Inches)  paper 17.000 x 11.000
  margins L0.250 B0.750 R0.250 T0.750
  PRINTABLE area = 16.500 x 9.500, and layout (0,0) is its lower-left
  => PAPER occupies layout coords x -0.250..16.750, y -0.750..10.250
  => PRINTABLE occupies x 0.000..16.500, y 0.000..9.500
  BLOCK SS_BLOCK_17X11   (0.243,0.330)-(16.670,10.670)
  BLOCK SS_LEGEND        (14.091,7.771)-(16.795,10.979)

=== 11X17 ===
  media ANSI_full_bleed_B_(11.00_x_17.00_Inches)  paper 11.000 x 17.000
  margins L0.000 B0.000 R0.000 T0.000
  PRINTABLE area = 11.000 x 17.000, and layout (0,0) is its lower-left
  => PAPER occupies layout coords x -0.000..11.000, y -0.000..17.000
  => PRINTABLE occupies x 0.000..11.000, y 0.000..17.000
  BLOCK SS_LEGEND        (7.590,13.371)-(10.294,16.578)
  BLOCK SS_BLOCK_11X17   (0.165,0.287)-(10.815,16.765)