- added renderer

src/fluency/geometry_occ/sketch.py

@@ -626,6 +626,17 @@ class OCCSketch(SketchInterface):
         elif ctype == "equal_radius":
             # tracked only (no solver entity)
             pass
+        elif ctype == "diameter":
+            # Update circle radius in sketch data
+            circle_id = ids[0]
+            if circle_id in self._circles:
+                center_id, _ = self._circles[circle_id]
+                radius = params[0] / 2.0
+                self._circles[circle_id] = (center_id, radius)
+            ent = self._entities.get(circle_id)
+            if ent is not None and ent.geometry is not None:
+                cx, cy = ent.geometry[0] if isinstance(ent.geometry[0], tuple) else ent.geometry
+                ent.geometry = ((cx, cy), radius)
         else:
             return False
         return True
@@ -788,6 +799,21 @@ class OCCSketch(SketchInterface):
         self._record_constraint("equal_radius", (circle1.id, circle2.id))
         return True
 
+    def constrain_diameter(self, circle: SketchEntity, diameter: float) -> bool:
+        """Set the diameter of a circle."""
+        radius = diameter / 2.0
+        # Update the circle's radius in the sketch
+        if circle.id in self._circles:
+            center_id, _ = self._circles[circle.id]
+            self._circles[circle.id] = (center_id, radius)
+        # Update the entity geometry
+        ent = self._entities.get(circle.id)
+        if ent is not None:
+            cx, cy = ent.geometry
+            ent.geometry = ((cx, cy), radius)
+        self._record_constraint("diameter", (circle.id,), (diameter,))
+        return True
+
     def constrain_fixed(self, entity: SketchEntity) -> bool:
         """Fix an entity in place via dragged constraint."""
         ent = self._entities.get(entity.id)