Create Blender export plugin

src/ifcblenderexport/io_export_ifc/__init__.py

@@ -0,0 +1,71 @@
+bl_info = {
+    "name": "IfcBlenderExport",
+    "description": "Export files in the "
+        "Industry Foundation Classes (.ifc) file format",
+    "author": "Dion Moult, IfcOpenShell",
+    "blender": (2, 80, 0),
+    "location": "File > Export",
+    "tracker_url": "https://sourceforge.net/p/ifcopenshell/"
+        "_list/tickets?source=navbar",
+    "category": "Import-Export"}
+
+if "bpy" in locals():
+    from importlib import reload
+    reload(export)
+    del reload
+
+import bpy
+import time
+from . import export
+import os
+from bpy.props import (StringProperty,)
+
+cwd = os.path.dirname(os.path.realpath(__file__)) + os.path.sep
+
+class ExportIFC(bpy.types.Operator):
+    bl_idname = "export.ifc"
+    bl_label = "Export .ifc file"
+    filename_ext = ".ifc"
+    #filter_glob: StringProperty(default="*.ifc", options={'HIDDEN'})
+    filepath: StringProperty(subtype='FILE_PATH')
+
+    def invoke(self, context, event):
+        if not self.filepath:
+            self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".ifc")
+        WindowManager = context.window_manager
+        WindowManager.fileselect_add(self)
+        return {'RUNNING_MODAL'}
+
+    def execute(self, context):
+        print('# Starting export')
+        start = time.time()
+        ifc_export_settings = export.IfcExportSettings()
+        ifc_export_settings.bim_path = cwd
+        ifc_export_settings.output_file = bpy.path.ensure_ext(self.filepath, '.ifc')
+        ifc_parser = export.IfcParser(ifc_export_settings)
+        ifc_schema = export.IfcSchema(ifc_export_settings)
+        qto_calculator = export.QtoCalculator()
+        ifc_exporter = export.IfcExporter(ifc_export_settings, ifc_schema, ifc_parser, qto_calculator)
+        ifc_exporter.export()
+        print('# Export finished in {:.2f} seconds'.format(time.time() - start))
+        return {'FINISHED'}
+
+
+def menu_func(self, context):
+    self.layout.operator(ExportIFC.bl_idname,
+         text="Industry Foundation Classes (.ifc)")
+
+classes = (ExportIFC,)
+
+def register():
+    for cls in classes:
+        bpy.utils.register_class(cls)
+    bpy.types.TOPBAR_MT_file_export.append(menu_func)
+
+def unregister():
+    for cls in reversed(classes):
+        bpy.utils.unregister_class(cls)
+    bpy.types.TOPBAR_MT_file_export.remove(menu_func)
+
+if __name__ == "__main__":
+    register()

src/ifcblenderexport/io_export_ifc/export.py

@@ -63,8 +63,8 @@ class QtoCalculator():
         return volume
 
 class IfcSchema():
-    def __init__(self):
+    def __init__(self, ifc_export_settings):
-        self.schema_dir = '/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/schema/'
+        self.schema_dir = '{}schema/'.format(ifc_export_settings.bim_path)
         self.property_file = ifcopenshell.open(self.schema_dir + 'IFC4_ADD2.ifc')
         self.psets = {}
         self.qtos = {}
@@ -84,7 +84,7 @@ class IfcSchema():
 
 class IfcParser():
     def __init__(self, ifc_export_settings):
-        self.data_dir = '/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/data/'
+        self.data_dir = '{}data/'.format(ifc_export_settings.bim_path)
 
         self.ifc_export_settings = ifc_export_settings
 
@@ -672,8 +672,8 @@ class SIUnitHelper:
 
 class IfcExporter():
     def __init__(self, ifc_export_settings, ifc_schema, ifc_parser, qto_calculator):
-        self.template_file = '/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/template.ifc'
+        self.template_file = '{}template.ifc'.format(ifc_export_settings.bim_path)
-        self.output_file = '/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/output.ifc'
+        self.output_file = ifc_export_settings.output_file
         self.ifc_export_settings = ifc_export_settings
         self.ifc_schema = ifc_schema
         self.ifc_parser = ifc_parser
@@ -1245,17 +1245,9 @@ class IfcExporter():
 
 class IfcExportSettings:
     def __init__(self):
+        self.bim_path = None
+        self.output_file = None
         self.has_representations = True
         self.has_quantities = True
         self.subcontexts = ['Axis', 'FootPrint', 'Reference', 'Body', 'Clearance', 'CoG']
         self.generated_subcontexts = ['Box']
-
-print('# Starting export')
-start = time.time()
-ifc_export_settings = IfcExportSettings()
-ifc_parser = IfcParser(ifc_export_settings)
-ifc_schema = IfcSchema()
-qto_calculator = QtoCalculator()
-ifc_exporter = IfcExporter(ifc_export_settings, ifc_schema, ifc_parser, qto_calculator)
-ifc_exporter.export()
-print('# Export finished in {:.2f} seconds'.format(time.time() - start))