#1153 Annotation reference and sheet IDs now implemented in SVG.

src/blenderbim/blenderbim/bim/module/drawing/operator.py

@@ -635,14 +635,8 @@ class RemoveDrawingFromSheet(bpy.types.Operator):
 
     def execute(self, context):
         reference = tool.Ifc.get().by_id(self.reference)
-        if tool.Ifc.get_schema() == "IFC2X3":
-            sheet = reference.ReferenceToDocument[0]
-            drawing = [r for r in tool.Ifc.by_type("IfcRelAssociatesDocument") if r.RelatingDocument == reference][
-                0
-            ].RelatedObjects[0]
-        else:
-            sheet = reference.ReferencedDocument
-            drawing = reference.DocumentRefForObjects[0].RelatedObjects[0]
+        sheet = tool.Drawing.get_reference_sheet(reference)
+        drawing = tool.Drawing.get_reference_element(reference)
 
         tool.Ifc.run("document.unassign_document", product=drawing, document=reference)
         tool.Ifc.run("document.remove_reference", reference=reference)

src/blenderbim/blenderbim/bim/module/drawing/svgwriter.py

@@ -453,9 +453,23 @@ class SvgWriter:
                 (symbol_position * self.scale)[1],
             )
 
-            self.svg.add(self.svg.use("#section-arrow", insert=tuple(symbol_position * self.scale), transform=transform))
+            self.svg.add(
+                self.svg.use("#section-arrow", insert=tuple(symbol_position * self.scale), transform=transform)
+            )
             self.svg.add(self.svg.use("#section-tag", insert=tuple(symbol_position * self.scale)))
 
+            reference_id, sheet_id = self.get_reference_and_sheet_id_from_annotation(tool.Ifc.get_entity(obj))
+            text_position = list(symbol_position * self.scale)
+            text_style = {
+                "font-size": annotation.Annotator.get_svg_text_size(2.5),
+                "font-family": "OpenGost Type B TT",
+                "text-anchor": "middle",
+                "alignment-baseline": "middle",
+                "dominant-baseline": "middle",
+            }
+            self.svg.add(self.svg.text(reference_id, insert=(text_position[0], text_position[1] - 2.5), **text_style))
+            self.svg.add(self.svg.text(sheet_id, insert=(text_position[0], text_position[1] + 2.5), **text_style))
+
     def draw_elevation_annotation(self, obj):
         x_offset = self.raw_width / 2
         y_offset = self.raw_height / 2
@@ -475,6 +489,34 @@ class SvgWriter:
         self.svg.add(self.svg.use("#elevation-arrow", insert=tuple(symbol_position * self.scale), transform=transform))
         self.svg.add(self.svg.use("#elevation-tag", insert=tuple(symbol_position * self.scale)))
 
+        reference_id, sheet_id = self.get_reference_and_sheet_id_from_annotation(tool.Ifc.get_entity(obj))
+        text_position = list(symbol_position * self.scale)
+        text_style = {
+            "font-size": annotation.Annotator.get_svg_text_size(2.5),
+            "font-family": "OpenGost Type B TT",
+            "text-anchor": "middle",
+            "alignment-baseline": "middle",
+            "dominant-baseline": "middle",
+        }
+        self.svg.add(self.svg.text(reference_id, insert=(text_position[0], text_position[1] - 2.5), **text_style))
+        self.svg.add(self.svg.text(sheet_id, insert=(text_position[0], text_position[1] + 2.5), **text_style))
+
+    def get_reference_and_sheet_id_from_annotation(self, element):
+        reference_id = "-"
+        sheet_id = "-"
+        drawing = tool.Drawing.get_annotation_element(element)
+        reference = tool.Drawing.get_drawing_reference(drawing)
+        if reference:
+            sheet = tool.Drawing.get_reference_sheet(reference)
+            if sheet:
+                if tool.Ifc.get_schema() == "IFC2X3":
+                    reference_id = reference.ItemReference or "-"
+                    sheet_id = sheet.DocumentId or "-"
+                else:
+                    reference_id = reference.Identification or "-"
+                    sheet_id = sheet.Identification or "-"
+                return (reference_id, sheet_id)
+        return ("-", "-")
 
     def draw_text_annotation(self, text_obj, position):
         x_offset = self.raw_width / 2

src/blenderbim/blenderbim/tool/drawing.py

@@ -731,3 +731,21 @@ class Drawing(blenderbim.core.tool.Drawing):
     @classmethod
     def get_drawing_human_scale(cls, drawing):
         return ifcopenshell.util.element.get_psets(drawing)["EPset_Drawing"]["HumanScale"]
+
+    @classmethod
+    def get_annotation_element(cls, element):
+        for rel in element.HasAssignments:
+            if rel.is_a("IfcRelAssignsToProduct"):
+                return rel.RelatingProduct
+
+    @classmethod
+    def get_drawing_reference(cls, drawing):
+        for rel in drawing.HasAssociations:
+            if rel.is_a("IfcRelAssociatesDocument"):
+                return rel.RelatingDocument
+
+    @classmethod
+    def get_reference_sheet(cls, reference):
+        if tool.Ifc.get_schema() == "IFC2X3":
+            return reference.ReferenceToDocument[0]
+        return reference.ReferencedDocument