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Pcbnew: optimize BOARD::SortedNetnamesList() for a must faster calculation time. 

It is mainly used in copper zones dialog editor,
and previously created a noticeable delay to show this dialog with large boards (more than 900 nets)
This commit is contained in:
jean-pierre charras 2018-06-02 18:14:34 +02:00
parent d4393b2813
commit 6e57266136
1 changed files with 29 additions and 6 deletions
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35
pcbnew/class_board.cpp
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@ -6,11 +6,11 @@
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
*
* Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
* Copyright (C) 1992-2018 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -1388,12 +1388,17 @@ MODULE* BOARD::FindModule( const wxString& aRefOrTimeStamp, bool aSearchByTimeSt
}
// Sort nets by decreasing pad count. For same pad count, sort by alphabetic names
// The pad count for each netcode, stored in a buffer for a fast access.
// This is needed by the sort function sortNetsByNodes()
static std::vector<int> padCountListByNet;
// Sort nets by decreasing pad count.
// For same pad count, sort by alphabetic names
static bool sortNetsByNodes( const NETINFO_ITEM* a, const NETINFO_ITEM* b )
{
auto connectivity = a->GetParent()->GetConnectivity();
int countA = connectivity->GetPadCount( a->GetNet() );
int countB = connectivity->GetPadCount( b->GetNet() );
int countA = padCountListByNet[a->GetNet()];
int countB = padCountListByNet[b->GetNet()];
if( countA == countB )
return a->GetNetname() < b->GetNetname();
@ -1426,7 +1431,25 @@ int BOARD::SortedNetnamesList( wxArrayString& aNames, bool aSortbyPadsCount )
// sort the list
if( aSortbyPadsCount )
{
// Build the pad count by net:
padCountListByNet.clear();
std::vector<D_PAD*> pads = GetPads();
// Calculate the max value of net codes, and creates the buffer to
// store the pad count by net code
int max_netcode = 0;
for( D_PAD* pad : pads )
max_netcode = std::max( max_netcode, pad->GetNetCode() );
padCountListByNet.assign( max_netcode+1, 0 );
for( D_PAD* pad : pads )
padCountListByNet[pad->GetNetCode()]++;
sort( netBuffer.begin(), netBuffer.end(), sortNetsByNodes );
}
else
sort( netBuffer.begin(), netBuffer.end(), sortNetsByNames );