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dxfupdate für surfaces

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This commit is contained in:
Paul Wolok
2025-12-15 13:11:54 +01:00
parent 274814e38b
commit 61a04726fe
2 changed files with 119475 additions and 9 deletions
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lib/dxf2lib.py
+55 -9
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@@ -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)