fix: preserve legacy p-rec-annot elevation quotient formatting

2026-08-07 09:32:11 +03:00
parent a8749ffa69
commit f9cd0a43bf
3 changed files with 11 additions and 8 deletions
@@ -6,8 +6,11 @@ public static class LegacyElevationFormatter
 {
    public static int RoundModelElevation(double modelZ, double datumOffset)
    {
-        var increments = Math.Round((modelZ + datumOffset) / 5d, MidpointRounding.AwayFromZero);
-        return checked((int)Math.Round(increments * 5d, MidpointRounding.AwayFromZero));
+        // InsertElevation.BlockJig divides the model-space ordinate by five,
+        // rounds that quotient away from zero, then formats the resulting
+        // integer as a signed metres/millimetres value.  It does not multiply
+        // the rounded quotient back by five.
+        return checked((int)Math.Round((modelZ + datumOffset) / 5d, MidpointRounding.AwayFromZero));
    }

    public static string FormatMillimetres(int millimetres)