Gerbview: fix incorrect rendering of oval vertical standard aperture with hole.

Fix also incorrect display of dcode size in toolbal: was Y size  X size.
Now is X size Y size, as expected.

gerbview/dcode.cpp

@@ -224,14 +224,14 @@ void D_CODE::DrawFlashedShape(  GERBER_DRAW_ITEM* aParent,
             int delta = (m_Size.x - m_Size.y) / 2;
             start.x -= delta;
             end.x   += delta;
-            radius   = m_Size.y;
+            radius   = m_Size.y;    // Width in fact
         }
-        else   // horizontal oval
+        else   // vertical oval
         {
             int delta = (m_Size.y - m_Size.x) / 2;
             start.y -= delta;
             end.y   += delta;
-            radius   = m_Size.x;
+            radius   = m_Size.x;    // Width in fact
         }
 
         start = aParent->GetABPosition( start );
@@ -375,10 +375,7 @@ void D_CODE::ConvertShapeToPolygon()
         m_Polygon.Append( VECTOR2I( initialpos ) );      // close outline
 
         if( m_Size.y > m_Size.x )                   // vertical oval, rotate polygon.
-        {
-            for( auto it = m_Polygon.Iterate( 0 ); it; ++it )
-                it->Rotate( -M_PI / 2 );
-        }
+            m_Polygon.Rotate( -M_PI / 2 );
 
         addHoleToPolygon( &m_Polygon, m_DrillShape, m_Drill, initialpos );
     }

gerbview/rs274x.cpp

@@ -687,6 +687,7 @@ bool GERBER_FILE_IMAGE::ExecuteRS274XCommand( int aCommand, char* aBuff,
 
             aText += 2;              // skip "C," for example
 
+            // First parameter is the size X:
             dcode->m_Size.x = KiROUND( ReadDouble( aText ) * conv_scale );
             dcode->m_Size.y = dcode->m_Size.x;
 
@@ -726,7 +727,7 @@ bool GERBER_FILE_IMAGE::ExecuteRS274XCommand( int aCommand, char* aBuff,
                 while( *aText == ' ' )
                     aText++;
 
-                if( *aText == 'X' )
+                if( *aText == 'X' ) // Second parameter: size Y
                 {
                     aText++;
                     dcode->m_Size.y =
@@ -736,7 +737,7 @@ bool GERBER_FILE_IMAGE::ExecuteRS274XCommand( int aCommand, char* aBuff,
                 while( *aText == ' ' )
                     aText++;
 
-                if( *aText == 'X' )
+                if( *aText == 'X' ) // third parameter: drill size (or drill size X)
                 {
                     aText++;
                     dcode->m_Drill.x = KiROUND( ReadDouble( aText ) * conv_scale );
@@ -747,13 +748,14 @@ bool GERBER_FILE_IMAGE::ExecuteRS274XCommand( int aCommand, char* aBuff,
                 while( *aText == ' ' )
                     aText++;
 
-                if( *aText == 'X' )
+                if( *aText == 'X' ) // fourth parameter: drill size Y
                 {
                     aText++;
                     dcode->m_Drill.y =
                         KiROUND( ReadDouble( aText ) * conv_scale );
                     dcode->m_DrillShape = APT_DEF_RECT_HOLE;
                 }
+
                 dcode->m_Defined = true;
                 break;
 

gerbview/toolbars_gerber.cpp

@@ -289,7 +289,7 @@ void GERBVIEW_FRAME::updateDCodeSelectBox()
 
         msg.Printf( "tool %d [%.3fx%.3f %s] %s",
                     dcode->m_Num_Dcode,
-                    dcode->m_Size.y / scale, dcode->m_Size.x / scale,
+                    dcode->m_Size.x / scale, dcode->m_Size.y / scale,
                     units,
                     D_CODE::ShowApertureType( dcode->m_Shape )
                     );