Pcbnew: handle circles in polygon booleans

pcbnew/tools/edit_tool.cpp

@@ -160,7 +160,8 @@ static std::shared_ptr<CONDITIONAL_MENU> makeShapeModificationMenu( TOOL_INTERAC
     static const std::vector<KICAD_T> lineExtendTypes = { PCB_SHAPE_LOCATE_SEGMENT_T };
 
     static const std::vector<KICAD_T> polygonBooleanTypes = { PCB_SHAPE_LOCATE_RECT_T,
-                                                              PCB_SHAPE_LOCATE_POLY_T };
+                                                              PCB_SHAPE_LOCATE_POLY_T,
+                                                              PCB_SHAPE_LOCATE_CIRCLE_T };
 
     static const std::vector<KICAD_T> polygonSimplifyTypes = { PCB_SHAPE_LOCATE_POLY_T,
                                                                PCB_ZONE_T };
@@ -1829,7 +1830,13 @@ int EDIT_TOOL::BooleanPolygons( const TOOL_EVENT& aEvent )
                 {
                     BOARD_ITEM* item = aCollector[i];
 
-                    if( !item->IsType( { PCB_SHAPE_LOCATE_POLY_T, PCB_SHAPE_LOCATE_RECT_T } ) )
+                    static const std::vector<KICAD_T> polygonBooleanTypes = {
+                        PCB_SHAPE_LOCATE_POLY_T,
+                        PCB_SHAPE_LOCATE_RECT_T,
+                        PCB_SHAPE_LOCATE_CIRCLE_T,
+                    };
+
+                    if( !item->IsType( polygonBooleanTypes ) )
                         aCollector.Remove( item );
                 }
             },

pcbnew/tools/item_modification_routine.cpp

@@ -454,18 +454,26 @@ void POLYGON_BOOLEAN_ROUTINE::ProcessShape( PCB_SHAPE& aPcbShape )
     }
     case SHAPE_T::RECTANGLE:
     {
-        SHAPE_POLY_SET rect_poly;
+        poly = std::make_unique<SHAPE_POLY_SET>();
 
         const std::vector<VECTOR2I> rect_pts = aPcbShape.GetRectCorners();
 
-        rect_poly.NewOutline();
+        poly->NewOutline();
 
         for( const VECTOR2I& pt : rect_pts )
         {
-            rect_poly.Append( pt );
+            poly->Append( pt );
         }
+        break;
+    }
+    case SHAPE_T::CIRCLE:
+    {
+        poly = std::make_unique<SHAPE_POLY_SET>();
+        const SHAPE_ARC arc{ aPcbShape.GetCenter(), aPcbShape.GetCenter() + VECTOR2I{ aPcbShape.GetRadius(), 0 },
+                             FULL_CIRCLE, 0 };
 
-        poly = std::make_unique<SHAPE_POLY_SET>( std::move( rect_poly ) );
+        poly->NewOutline();
+        poly->Append( arc );
         break;
     }
     default: