From 457b6769720e48031e8f852993df6dd708408a01 Mon Sep 17 00:00:00 2001
From: CalligaroV <vincenzo.calligaro@gmail.com>
Date: Wed, 13 Sep 2023 15:27:51 +0200
Subject: [PATCH] [Feature Request] [Draft] [UI/UX] Remove the center arrow on
 radial dimensions (#10655)

Related to issue #7573

Forum discussion

https://forum.freecadweb.org/viewtopic.php?p=631252#p631252

These modifications don't add the new properties suggested on the issue mentioned above and suggested on the forum discussion but just remove the center arrow

Other info and discussion can be found at https://gitlab.com/calligarov/FreeCAD/-/merge_requests/1
---
 src/Mod/Draft/draftfunctions/svg.py           | 12 ++++++---
 .../draftviewproviders/view_dimension.py      | 27 +++++++++++++------
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/src/Mod/Draft/draftfunctions/svg.py b/src/Mod/Draft/draftfunctions/svg.py
index 65fa40ca47..2a900f9231 100644
--- a/src/Mod/Draft/draftfunctions/svg.py
+++ b/src/Mod/Draft/draftfunctions/svg.py
@@ -350,10 +350,14 @@ def _svg_dimension(obj, plane, scale, linewidth, fontsize,
                 if vobj.FlipArrows:
                     angle = angle + math.pi
 
-            svg += get_arrow(obj,
-                             vobj.ArrowType,
-                             p2, arrowsize, stroke, linewidth,
-                             angle)
+            if not hasattr(obj, "Diameter") \
+                    or obj.Diameter \
+                    or not prx.is_linked_to_circle():
+                svg += get_arrow(obj,
+                                 vobj.ArrowType,
+                                 p2, arrowsize, stroke, linewidth,
+                                 angle)
+
             svg += get_arrow(obj,
                              vobj.ArrowType,
                              p3, arrowsize, stroke, linewidth,
diff --git a/src/Mod/Draft/draftviewproviders/view_dimension.py b/src/Mod/Draft/draftviewproviders/view_dimension.py
index 2684b363a7..7fbfd40afd 100644
--- a/src/Mod/Draft/draftviewproviders/view_dimension.py
+++ b/src/Mod/Draft/draftviewproviders/view_dimension.py
@@ -367,7 +367,7 @@ class ViewProviderLinearDimension(ViewProviderDimensionBase):
 
         It only runs if `Start`, `End`, `Dimline`, or `Direction` changed.
         """
-        if prop not in ("Start", "End", "Dimline", "Direction"):
+        if prop not in ("Start", "End", "Dimline", "Direction", "Diameter"):
             return
 
         if obj.Start == obj.End:
@@ -378,6 +378,16 @@ class ViewProviderLinearDimension(ViewProviderDimensionBase):
 
         vobj = obj.ViewObject
 
+        if prop == "Diameter":
+            if hasattr(vobj, "Override") and vobj.Override:
+                if obj.Diameter:
+                    vobj.Override = vobj.Override.replace("R $dim", "Ø $dim")
+                else:
+                    vobj.Override = vobj.Override.replace("Ø $dim", "R $dim")
+
+            self.onChanged(vobj, "ArrowType")
+            return
+
         # Calculate the 4 points
         #
         #       |        d          |
@@ -728,14 +738,15 @@ class ViewProviderLinearDimension(ViewProviderDimensionBase):
         self.marks = coin.SoSeparator()
         self.marks.addChild(self.linecolor)
 
-        s1 = coin.SoSeparator()
-        if symbol == "Circle":
-            s1.addChild(self.coord1)
-        else:
-            s1.addChild(self.trans1)
+        if vobj.Object.Diameter or not self.is_linked_to_circle():
+            s1 = coin.SoSeparator()
+            if symbol == "Circle":
+                s1.addChild(self.coord1)
+            else:
+                s1.addChild(self.trans1)
 
-        s1.addChild(gui_utils.dim_symbol(symbol, invert=not inv))
-        self.marks.addChild(s1)
+            s1.addChild(gui_utils.dim_symbol(symbol, invert=not inv))
+            self.marks.addChild(s1)
 
         s2 = coin.SoSeparator()
         if symbol == "Circle":