Glassvision/IfcOpenShell
1
0
Fork 0
mirror of https://github.com/IfcOpenShell/IfcOpenShell.git synced 2026-08-10 01:41:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

Autodetect dense meshes to make it faster when loading so users don't need to go into advanced mode.

Browse Source
This commit is contained in:
Dion Moult
2023-09-23 14:50:36 +10:00
parent 6bdc4cd607
commit 0e525dcbee
1 changed files with 31 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/blenderbim/blenderbim/bim/import_ifc.py
+31 -5
View File
@@ -146,12 +146,15 @@ class MaterialCreator:
faces_remap = None
texture_map = None
if coordinates.is_a("IfcIndexedPolygonalTextureMap"):
faces_remap = [[coordinates_remap[i-1] for i in tex_coord_index.TexCoordsOf.CoordIndex]
for tex_coord_index in coordinates.TexCoordIndices]
faces_remap = [
[coordinates_remap[i - 1] for i in tex_coord_index.TexCoordsOf.CoordIndex]
for tex_coord_index in coordinates.TexCoordIndices
]
texture_map = [tex_coord_index.TexCoordIndex for tex_coord_index in coordinates.TexCoordIndices]
elif coordinates.is_a("IfcIndexedTriangleTextureMap"):
faces_remap = [[coordinates_remap[i-1] for i in triangle_face]
for triangle_face in coordinates.MappedTo.CoordIndex]
faces_remap = [
[coordinates_remap[i - 1] for i in triangle_face] for triangle_face in coordinates.MappedTo.CoordIndex
]
texture_map = coordinates.TexCoordIndex
# apply uv to each face
@@ -166,7 +169,7 @@ class MaterialCreator:
)
# apply uv to each loop
for loop, i in zip(bface.loops, texCoordIndex):
loop[uv_layer].uv = coordinates.TexCoords.TexCoordsList[i-1]
loop[uv_layer].uv = coordinates.TexCoords.TexCoordsList[i - 1]
# Finish up, write the bmesh back to the mesh
bm.to_mesh(self.mesh)
@@ -263,6 +266,8 @@ class IfcImporter:
self.profile_code("Calculate unit scale")
self.calculate_model_offset()
self.profile_code("Calculate model offset")
self.predict_dense_mesh()
self.profile_code("Predict dense mesh")
self.set_units()
self.profile_code("Set units")
self.create_project()
@@ -348,6 +353,7 @@ class IfcImporter:
)
if self.body_contexts:
self.settings.set_context_ids(self.body_contexts)
self.settings_body_2d.set_context_ids(self.body_contexts)
# Annotation ContextType is to accommodate broken Revit files
# See https://github.com/Autodesk/revit-ifc/issues/187
self.plan_contexts = [
@@ -498,6 +504,26 @@ class IfcImporter:
products.extend(self.get_products_from_shape_representation(inverse_element))
return products
def predict_dense_mesh(self):
threshold = 10000 # Just from experience.
faces = [len(e.CfsFaces) for e in self.file.by_type("IfcClosedShell")]
if faces and max(faces) > threshold:
self.ifc_import_settings.should_use_native_meshes = True
return
if self.file.schema == "IFC2X3":
return
faces = [len(e.Faces) for e in self.file.by_type("IfcPolygonalFaceSet")]
if faces and max(faces) > threshold:
self.ifc_import_settings.should_use_native_meshes = True
return
faces = [len(e.CoordIndex) for e in self.file.by_type("IfcTriangulatedFaceSet")]
if faces and max(faces) > threshold:
self.ifc_import_settings.should_use_native_meshes = True
def calculate_model_offset(self):
props = bpy.context.scene.BIMGeoreferenceProperties
if props.has_blender_offset: