/// Redraws the zone outline when moving a corner according to the cursor position
void Show_Zone_Corner_Or_Outline_While_Move_Mouse( EDA_DRAW_PANEL* aPanel, wxDC* aDC,
                                                   const wxPoint& aPosition, bool aErase )
{
    PCB_EDIT_FRAME* pcbframe = (PCB_EDIT_FRAME*) aPanel->GetParent();
    ZONE_CONTAINER* zone = (ZONE_CONTAINER*) pcbframe->GetCurItem();

    if( aErase )    // Undraw edge in old position
    {
        zone->Draw( aPanel, aDC, GR_XOR );
    }

    wxPoint pos = pcbframe->GetCrossHairPosition();

    if( zone->IsMoving() )
    {
        wxPoint offset;
        offset = pos - s_CursorLastPosition;
        zone->Move( offset );
        s_CursorLastPosition = pos;
    }
    else if( zone->IsDragging() )
    {
        wxPoint offset = pos - s_CursorLastPosition;
        int selection = zone->GetSelectedCorner();
        zone->MoveEdge( offset, selection );
        s_CursorLastPosition = pos;
    }
    else
    {
        zone->Outline()->MoveCorner( zone->GetSelectedCorner(), pos.x, pos.y );
    }

    zone->Draw( aPanel, aDC, GR_XOR );
}
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/**
 * Function Abort_Zone_Move_Corner_Or_Outlines
 * cancels the Begin_Zone state if at least one EDGE_ZONE has been created.
 */
void Abort_Zone_Move_Corner_Or_Outlines( EDA_DRAW_PANEL* Panel, wxDC* DC )
{
    PCB_EDIT_FRAME* pcbframe = (PCB_EDIT_FRAME*) Panel->GetParent();
    ZONE_CONTAINER* zone     = (ZONE_CONTAINER*) pcbframe->GetCurItem();

    if( zone->IsMoving() )
    {
        wxPoint offset;
        offset = s_CornerInitialPosition - s_CursorLastPosition;
        zone->Move( offset );
    }
    else if( zone->IsDragging() )
    {
        wxPoint offset;
        offset = s_CornerInitialPosition - s_CursorLastPosition;
        zone->MoveEdge( offset );
    }
    else
    {
        if( s_CornerIsNew )
        {
            zone->Outline()->DeleteCorner( zone->GetSelectedCorner() );
        }
        else
        {
            wxPoint pos = s_CornerInitialPosition;
            zone->Outline()->MoveCorner( zone->GetSelectedCorner(), pos.x, pos.y );
        }
    }

    Panel->SetMouseCapture( NULL, NULL );
    s_AuxiliaryList.ClearListAndDeleteItems();
    s_PickedList. ClearListAndDeleteItems();
    Panel->Refresh();

    pcbframe->SetCurItem( NULL );
    zone->ClearFlags();
    s_AddCutoutToCurrentZone = false;
    s_CurrentZone = NULL;
}