From 1f89a0089617c8eb63eccc327dd22338a2225c22 Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Tue, 4 Feb 2020 11:57:06 +1100
Subject: [PATCH] Allow people to maintain parametric modifiers, or bake the
 results

---
 src/ifcblenderexport/blenderbim/export_ifc.py | 5 +++++
 src/ifcblenderexport/blenderbim/prop.py       | 1 +
 src/ifcblenderexport/blenderbim/ui.py         | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/src/ifcblenderexport/blenderbim/export_ifc.py b/src/ifcblenderexport/blenderbim/export_ifc.py
index 5298148730..cc42c99321 100644
--- a/src/ifcblenderexport/blenderbim/export_ifc.py
+++ b/src/ifcblenderexport/blenderbim/export_ifc.py
@@ -215,6 +215,8 @@ class IfcParser():
 
     def resolve_modifiers(self, product):
         obj = product['raw']
+        if obj.data and not obj.data.BIMMeshProperties.is_parametric:
+            return
         instance_objects = [(obj, {
             'location': obj.matrix_world.translation,
             'array_offset': Vector((0, 0, 0)),
@@ -840,6 +842,7 @@ class IfcParser():
             'context': context,
             'subcontext': subcontext,
             'target_view': target_view,
+            'is_parametric': mesh.BIMMeshProperties.is_parametric if hasattr(mesh, 'BIMMeshProperties') else False,
             'is_curve': isinstance(mesh, bpy.types.Curve),
             'is_point_cloud': self.is_point_cloud(obj),
             'is_structural': self.is_structural(obj),
@@ -2166,6 +2169,8 @@ class IfcExporter():
 
     def create_solid_representation(self, representation):
         mesh = representation['raw']
+        if not representation['is_parametric']:
+            mesh = representation['raw_object'].evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh()
         self.create_vertices(mesh.vertices)
         for polygon in mesh.polygons:
             self.ifc_faces.append(self.file.createIfcFace([
diff --git a/src/ifcblenderexport/blenderbim/prop.py b/src/ifcblenderexport/blenderbim/prop.py
index 0748356a88..7f415996fe 100644
--- a/src/ifcblenderexport/blenderbim/prop.py
+++ b/src/ifcblenderexport/blenderbim/prop.py
@@ -505,3 +505,4 @@ class BIMMeshProperties(PropertyGroup):
     is_wireframe: BoolProperty(name="Is Wireframe")
     is_swept_solid: BoolProperty(name="Is Swept Solid")
     swept_solids: CollectionProperty(name="Swept Solids", type=SweptSolid)
+    is_parametric: BoolProperty(name='Is Parametric', default=False)
diff --git a/src/ifcblenderexport/blenderbim/ui.py b/src/ifcblenderexport/blenderbim/ui.py
index e588a2c96d..2ba99c0182 100644
--- a/src/ifcblenderexport/blenderbim/ui.py
+++ b/src/ifcblenderexport/blenderbim/ui.py
@@ -142,6 +142,9 @@ class BIM_PT_mesh(Panel):
         row = layout.row()
         row.operator('bim.assign_context')
 
+        row = layout.row()
+        row.prop(props, 'is_parametric')
+
         row = layout.row()
         row.prop(props, 'is_wireframe')
         row = layout.row()