From 45ddbb907afa0ff8c71ab0e9f63e5a225c409221 Mon Sep 17 00:00:00 2001
From: Reini Urban <reini.urban@gmail.com>
Date: Wed, 25 Sep 2024 23:02:05 +0200
Subject: [PATCH] spec: WIP MESH class_version = 0

GH #1019
---
 src/dec_macros.h |  4 ++--
 src/dwg.spec     | 28 +++++++++++++++++-----------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/src/dec_macros.h b/src/dec_macros.h
index 59679f55e..303e41bb6 100644
--- a/src/dec_macros.h
+++ b/src/dec_macros.h
@@ -1241,8 +1241,8 @@
         }                                                                     \
     }
 
-#define FIELD_VECTOR(name, type, size, dxf)                                   \
-  FIELD_VECTOR_N (name, type, _obj->size, dxf)
+#define FIELD_VECTOR(name, type, numfield, dxf)                                   \
+  FIELD_VECTOR_N (name, type, _obj->numfield, dxf)
 
 #define SUB_FIELD_VECTOR_TYPESIZE(o, name, size, typesize, dxf)               \
   if (_obj->o.size > 0)                                                       \
diff --git a/src/dwg.spec b/src/dwg.spec
index e8d207892..37329f775 100644
--- a/src/dwg.spec
+++ b/src/dwg.spec
@@ -8747,20 +8747,26 @@ DWG_ENTITY_END
 DWG_ENTITY (MESH)
   SUBCLASS (AcDbSubDMesh)
   FIELD_BL (class_version, 71);   // 0 or 2
-  if (FIELD_VALUE(class_version) >= 2) {
-    FIELD_CAST (is_watertight, B, BL, 71);
-  }
-  else {
+  VALUEOUTOFBOUNDS (class_version, 5)
+  if (FIELD_VALUE(class_version) < 2) {
     // FIXME GH #1019
-    // FIELD_CAST (is_watertight, BS, BL, 71);
+    //FIELD_CAST (num_subdiv_vertex, BS, BL, 91);
+    //FIELD_3DPOINT_VECTOR (subdiv_vertex, num_subdiv_vertex, 10);
+    FIELD_CAST (num_vertex, BS, BL, 92);
     DEBUG_HERE_OBJ
+    FIELD_3DPOINT_VECTOR (vertex, num_vertex, 10);
+    FIELD_CAST (num_faces, BS, BL, 93);
+    FIELD_VECTOR (faces, BL, num_faces, 90);
+  }
+  else {
+    FIELD_CAST (is_watertight, B, BL, 71);
+    FIELD_BL (num_subdiv_vertex, 91); // subdivision_levels 0
+    FIELD_3DPOINT_VECTOR (subdiv_vertex, num_subdiv_vertex, 10);
+    FIELD_BL (num_vertex, 92); //14 @14
+    FIELD_3DPOINT_VECTOR (vertex, num_vertex, 10);
+    FIELD_BL (num_faces, 93); // 30
+    FIELD_VECTOR (faces, BL, num_faces, 90);
   }
-  FIELD_BL (num_subdiv_vertex, 91); // subdivision_levels 0
-  FIELD_3DPOINT_VECTOR (subdiv_vertex, num_subdiv_vertex, 10);
-  FIELD_BL (num_vertex, 92); //14 @14
-  FIELD_3DPOINT_VECTOR (vertex, num_vertex, 10);
-  FIELD_BL (num_faces, 93); // 30
-  FIELD_VECTOR (faces, BL, num_faces, 90);
 
   FIELD_BL (num_edges, 94); // 19
   REPEAT (num_edges, edges, Dwg_MESH_edge)