dxfupdate für surfaces

lib/dxf2lib.py

@@ -55,7 +55,22 @@ def create_block_library(input_dir, output_file, config, logger=None):
             src_doc = ezdxf.readfile(filepath)
             src_msp = src_doc.modelspace()
             entities = list(src_msp)
-            allowed_types = {"LINE", "LWPOLYLINE", "POLYLINE", "SPLINE", "CIRCLE", "ARC", "INSERT","ATTDEF"}
+            allowed_types = {
+                "LINE",
+                "LWPOLYLINE",
+                "POLYLINE",
+                "SPLINE",
+                "CIRCLE",
+                "ARC",
+                "INSERT",
+                "ATTDEF",
+                "SURFACE",
+                "3DSURFACE",
+                "EXTRUDEDSURFACE",
+                "REVOLVEDSURFACE",
+                "LOFTEDSURFACE",
+                "SWEPTSURFACE",
+            }
             filtered_entities = []
             
             for e in entities:
@@ -375,6 +390,27 @@ def calculate_block_bounding_box(block, doc, src_doc, filename,config):
     return bbox, (bbox.extmax.x -bbox.extmin.x, bbox.extmax.y -bbox.extmin.y),bbox.center
 
 
+def _bbox_from_virtual_entities(entity, doc, src_doc, filename, config, transform_matrix=None):
+    """
+    Nutzt virtual_entities(), um komplexe Objekte (z.B. SURFACE) in
+    auswertbare Geometrie zu zerlegen und darauf eine Bounding Box zu
+    berechnen.
+    """
+    v_bbox = BoundingBox()
+    if not hasattr(entity, "virtual_entities"):
+        return v_bbox
+    try:
+        for ve in entity.virtual_entities():
+            ve_bbox = get_entity_bounding_box(
+                ve, doc, src_doc, filename, config, transform_matrix
+            )
+            if ve_bbox and ve_bbox.has_data:
+                v_bbox.extend(ve_bbox)
+    except Exception as err:
+        print(f"Fehler bei virtual_entities() für {entity.dxftype()}: {err}")
+    return v_bbox
+
+
 def get_entity_bounding_box(e, doc,src_doc,filename,config, transform_matrix=None):
     """
     Berechnet die Bounding Box einer einzelnen Entity
@@ -441,17 +477,19 @@ def get_entity_bounding_box(e, doc,src_doc,filename,config, transform_matrix=Non
             
         elif e.dxftype() == 'LWPOLYLINE':
             # Nutze virtuelle Entities (Linien/Bögen), inkl. Bulge-Unterstützung
-            for ve in e.virtual_entities():
-                ve_bbox = get_entity_bounding_box(ve, doc, src_doc, filename, transform_matrix)
-                if ve_bbox and ve_bbox.has_data:
-                    bbox.extend(ve_bbox)
+            ve_bbox = _bbox_from_virtual_entities(
+                e, doc, src_doc, filename, config, transform_matrix
+            )
+            if ve_bbox.has_data:
+                bbox.extend(ve_bbox)
                 
         elif e.dxftype() == 'POLYLINE':
             # 2D/3D Polylines ebenfalls über virtuelle Entities
-            for ve in e.virtual_entities():
-                ve_bbox = get_entity_bounding_box(ve, doc, src_doc, filename, transform_matrix)
-                if ve_bbox and ve_bbox.has_data:
-                    bbox.extend(ve_bbox)
+            ve_bbox = _bbox_from_virtual_entities(
+                e, doc, src_doc, filename, config, transform_matrix
+            )
+            if ve_bbox.has_data:
+                bbox.extend(ve_bbox)
                 
         elif e.dxftype() == 'SPLINE':
             # Approximation der Spline-Kurve
@@ -482,6 +520,14 @@ def get_entity_bounding_box(e, doc,src_doc,filename,config, transform_matrix=Non
                 insert_point = transform_matrix.transform(insert_point)
           
             
+        elif e.dxftype().endswith('SURFACE'):
+            # Viele Surface-Typen liefern ihre Proxy-Geometrie über virtual_entities()
+            ve_bbox = _bbox_from_virtual_entities(
+                e, doc, src_doc, filename, config, transform_matrix
+            )
+            if ve_bbox.has_data:
+                bbox.extend(ve_bbox)
+                
         elif e.dxftype() == 'INSERT':
             # INSERT: Block-Inhalt mit Transformation berücksichtigen
             insert_bbox = calculate_insert_bounding_box(e, doc,src_doc,filename,config, transform_matrix)