Users can now specify a symbol for text annotation

src/ifcblenderexport/blenderbim/bim/cut_ifc.py

@@ -714,6 +714,7 @@ class SvgWriter():
 
         self.add_stylesheet()
         self.add_markers()
+        self.add_symbols()
         self.add_patterns()
         self.draw_background_image()
         self.draw_background_elements()
@@ -740,6 +741,12 @@ class SvgWriter():
         for child in root.getchildren():
             self.svg.defs.add(External(child))
 
+    def add_symbols(self):
+        tree = ET.parse('{}templates/symbols.svg'.format(self.ifc_cutter.data_dir))
+        root = tree.getroot()
+        for child in root.getchildren():
+            self.svg.defs.add(External(child))
+
     def add_patterns(self):
         return
         tree = ET.parse('{}templates/patterns.svg'.format(self.ifc_cutter.data_dir))
@@ -906,11 +913,23 @@ class SvgWriter():
                     'dominant-baseline': 'middle'
                 }))
 
+        self.draw_text_annotations()
+
+    def draw_text_annotations(self):
+        x_offset = self.raw_width / 2
+        y_offset = self.raw_height / 2
+
         for text_obj in self.ifc_cutter.text_objs:
             loc, rot, scale = self.ifc_cutter.camera_obj.matrix_world.decompose()
             pos = (text_obj.location - self.ifc_cutter.camera_obj.location) @ rot.to_matrix()
             text_position = Vector(((x_offset + pos.x), (y_offset - pos.y)))
 
+            if text_obj.data.BIMTextProperties.symbol != 'None':
+                self.svg.add(self.svg.use(
+                    '#{}'.format(text_obj.data.BIMTextProperties.symbol),
+                    insert=tuple(text_position * self.scale)
+                ))
+
             if text_obj.data.align_x == 'CENTER':
                 text_anchor = 'middle'
             elif text_obj.data.align_x == 'RIGHT':

src/ifcblenderexport/blenderbim/bim/data/templates/markers.svg

@@ -26,8 +26,8 @@
             <path d="M 5 20 L 15 10" class="annotation" style="stroke-width:3;" />
         </g>
     </marker>
-    <marker id="grid-marker" markerHeight="35" markerWidth="35" orient="auto" refX="17.5" refY="17.5">
+    <marker id="grid-marker" markerHeight="40" markerWidth="40" orient="auto" refX="20" refY="20">
-        <circle cx="17.5" cy="17.5" fill="white" stroke="black" r="15" style="stroke-width: 2"/>
+        <circle cx="20" cy="20" fill="white" stroke="black" r="17" style="stroke-width: 2"/>
     </marker>
     <marker id="leader-marker" markerHeight="7" markerWidth="10" orient="auto" refX="10" refY="3.5">
         <path d="M 0 0 L 0 7 L 10 3.5" class="annotation" style="fill:black;" />

src/ifcblenderexport/blenderbim/bim/data/templates/symbols.svg

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<svg baseProfile="full" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:ev="http://www.w3.org/2001/xml-events" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <g id="rectangle-tag">
+        <rect x="-6" y="-2.5" width="12" height="5" fill="white" stroke="black" style="stroke-width: 0.25;" />
+    </g>
+</svg>

src/ifcblenderexport/blenderbim/bim/prop.py

@@ -404,6 +404,10 @@ class BIMTextProperties(PropertyGroup):
         ('5.0', '5.0', ''),
         ('7.0', '7.0', ''),
         ], update=refreshFontSize, name='Font Size')
+    symbol: EnumProperty(items=[
+        ('None', 'None', ''),
+        ('rectangle-tag', 'Rectangle Tag', ''),
+        ], update=refreshFontSize, name='Symbol')
 
 
 class DocumentInformation(PropertyGroup):

src/ifcblenderexport/blenderbim/bim/ui.py

@@ -660,6 +660,9 @@ class BIM_PT_text(Panel):
         row = layout.row()
         row.prop(props, 'font_size')
 
+        row = layout.row()
+        row.prop(props, 'symbol')
+
 
 class BIM_PT_owner(Panel):
     bl_label = "Owner History"