TechDraw: Allow 3d dimension references to use point objects (#28199)

* [TD]fix 3d point object reference in dimension

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/Mod/Measure/App/ShapeFinder.cpp

@@ -106,9 +106,17 @@ ResolveResult ShapeFinder::resolveSelection(
 //       and ShapeFinder::getLinkAttachParent()
 TopoDS_Shape ShapeFinder::getLocatedShape(const App::DocumentObject& rootObject, const std::string& leafSub)
 {
-    auto resolved = resolveSelection(rootObject, leafSub);
-    auto target = &resolved.getTarget();
-    auto shortSub = resolved.getShortSub();
+    // point objects are weird.
+    const std::string VertexTag {"Vertex"};
+    const std::string PointTag {"Point"};
+    std::string objName {rootObject.getNameInDocument()};
+    if (objName.find(VertexTag) != std::string::npos || objName.find(PointTag) != std::string::npos) {
+        return Part::Feature::getShape(&rootObject, Part::ShapeOption::Transform);
+    }
+
+    ResolveResult resolved = resolveSelection(rootObject, leafSub);
+    App::DocumentObject* target = &resolved.getTarget();
+    std::string shortSub = resolved.getShortSub();
     if (!target) {
         return {};
     }

src/Mod/TechDraw/Gui/DimensionValidators.cpp

@@ -77,10 +77,18 @@ TechDraw::DrawViewPart* TechDraw::getReferencesFromSelection(ReferenceVector& re
             }
         } else if (!selItem.getObject()->isDerivedFrom<TechDraw::DrawView>()) {
             App::DocumentObject* obj3d = selItem.getObject();
-            // this is a regular 3d reference in form obj + long subelement
-            for (auto& sub3d : selItem.getSubNames()) {
-                ReferenceEntry ref(obj3d, sub3d);
+            // obj3d is a point object, in which case the sub will be empty instead of
+            // containing Vertex1.  Inserting "Vertex1" here gets us through
+            // validation, but doesn't work in Measure::shapefinder.
+            if (ShapeExtractor::isPointType(obj3d)) {
+                ReferenceEntry ref(obj3d, "Vertex1");
                 references3d.push_back(ref);
+            } else {
+                // this is a regular 3d reference in form obj + long subelement
+                for (auto& sub3d : selItem.getSubNames()) {
+                    ReferenceEntry ref(obj3d, sub3d);
+                    references3d.push_back(ref);
+                }
             }
         }
     }