New site project library for stuff like site sheds and cranes

2026-08-09 09:21:46 +00:00 · 2021-08-19 09:23:25 +10:00
parent cb2995a255
commit 92f55504e9
2 changed files with 107 additions and 0 deletions
@@ -0,0 +1,107 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import ifcopenshell.api
+
+
+class LibraryGenerator:
+    def generate(self):
+        ifcopenshell.api.pre_listeners = {}
+        ifcopenshell.api.post_listeners = {}
+
+        self.file = ifcopenshell.api.run("project.create_file")
+        self.project = ifcopenshell.api.run(
+            "root.create_entity", self.file, ifc_class="IfcProjectLibrary", name="BlenderBIM Demo Library"
+        )
+        ifcopenshell.api.run("unit.assign_unit", self.file, length={"is_metric": True, "raw": "METERS"})
+        ifcopenshell.api.run("context.add_context", self.file, context="Model")
+        self.representations = {
+            "body": ifcopenshell.api.run(
+                "context.add_context", self.file, context="Model", subcontext="Body", target_view="MODEL_VIEW"
+            ),
+            "clearance": ifcopenshell.api.run(
+                "context.add_context", self.file, context="Model", subcontext="Clearance", target_view="MODEL_VIEW"
+            ),
+        }
+        ifcopenshell.api.run("context.add_context", self.file, context="Plan")
+        self.annotation = ifcopenshell.api.run(
+            "context.add_context", self.file, context="Model", subcontext="Annotation", target_view="PLAN_VIEW"
+        )
+
+        self.create_type("IfcBuildingElementProxyType", "Site Shed 3x6m", {"body": "Site Shed 3x6m"})
+        self.create_type("IfcBuildingElementProxyType", "Site Shed 3x12m", {"body": "Site Shed 3x12m"})
+        self.create_type(
+            "IfcBuildingElementProxyType",
+            "Mobile Crane 50T",
+            {"body": "Mobile Crane 50T", "clearance": "Mobile Crane 50T - Clearance"},
+        )
+
+        self.file.write("blenderbim-site-library.ifc")
+
+    def create_type(self, ifc_class, name, representations):
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class=ifc_class, name=name)
+        for rep_name, obj_name in representations.items():
+            obj = bpy.data.objects.get(obj_name)
+            representation = ifcopenshell.api.run(
+                "geometry.add_representation",
+                self.file,
+                context=self.representations[rep_name],
+                blender_object=obj,
+                geometry=obj.data,
+                total_items=max(1, len(obj.material_slots)),
+            )
+            ifcopenshell.api.run(
+                "style.assign_representation_styles",
+                self.file,
+                **{
+                    "shape_representation": representation,
+                    "styles": [
+                        ifcopenshell.api.run("style.add_style", self.file, **self.get_style_settings(s.material))
+                        for s in obj.material_slots
+                    ],
+                },
+            )
+            ifcopenshell.api.run(
+                "geometry.assign_representation", self.file, product=element, representation=representation
+            )
+        ifcopenshell.api.run("project.assign_declaration", self.file, definition=element, relating_context=self.project)
+
+    def get_style_settings(self, material):
+        transparency = material.diffuse_color[3]
+        diffuse_colour = material.diffuse_color
+        if (
+            material.use_nodes
+            and hasattr(material.node_tree, "nodes")
+            and "Principled BSDF" in material.node_tree.nodes
+        ):
+            bsdf = material.node_tree.nodes["Principled BSDF"]
+            transparency = bsdf.inputs["Alpha"].default_value
+            diffuse_colour = bsdf.inputs["Base Color"].default_value
+        transparency = 1 - transparency
+        return {
+            "name": material.name,
+            "external_definition": None,
+            "surface_colour": tuple(material.diffuse_color),
+            "transparency": transparency,
+            "diffuse_colour": tuple(diffuse_colour),
+        }
+
+
+LibraryGenerator().generate()