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/////////////////////////////////////////////////////////////////////////////
// Name: zones_polygons_test_connections.cpp
// Licence: GPL License
/////////////////////////////////////////////////////////////////////////////
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
using namespace std;
#include <algorithm> // sort
#include <vector>
#include "fctsys.h"
#include "common.h"
#include "pcbnew.h"
#include "PolyLine.h"
#include "zones.h"
static bool CmpZoneSubnetValue( const BOARD_CONNECTED_ITEM* a, const BOARD_CONNECTED_ITEM* b );
void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb, int aNetcode );
/***********************************************************/
void BOARD::Test_Connections_To_Copper_Areas( int aNetcode )
/***********************************************************/
/**
* Function Test_Connection_To_Copper_Areas
* init .m_ZoneSubnet parameter in tracks and pads according to the connections to areas found
* @param aNetcode = netcode to analyse. if -1, analyse all nets
*/
{
std::vector <BOARD_CONNECTED_ITEM*> Candidates; // list of pads and tracks candidates on this layer and on this net.
int subnet = 0;
int netcode;
ZONE_CONTAINER* curr_zone;
BOARD_CONNECTED_ITEM* item;
// clear .m_ZoneSubnet parameter for pads
for( MODULE* module = m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->m_Pads; pad != NULL; pad = pad->Next() )
if( (aNetcode < 0) || ( aNetcode == pad->GetNet() ) )
pad->SetZoneSubNet( 0 );
}
// clear .m_ZoneSubnet parameter for tracks and vias
for( TRACK* track = m_Track; track; track = track->Next() )
{
if( (aNetcode < 0) || ( aNetcode == track->GetNet() ) )
track->SetZoneSubNet( 0 );
}
// examine all zones, net by net:
for( int index = 0; index < GetAreaCount(); index++ )
{
curr_zone = GetArea( index );
if( !curr_zone->IsOnCopperLayer() )
continue;
netcode = curr_zone->GetNet();
if( (aNetcode >= 0) && !( aNetcode == netcode ) )
continue;
if( curr_zone->m_FilledPolysList.size() == 0 )
continue;
// Build a list of candidates connected to the net:
Candidates.clear();
// At this point, layers are not considered, because areas on different layers can be connected by a via or a pad.
for( MODULE* module = m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->m_Pads; pad != NULL; pad = pad->Next() )
{
if( pad->GetNet() != curr_zone->GetNet() )
continue;
Candidates.push_back( pad );
}
}
for( TRACK* track = m_Track; track; track = track->Next() )
{
if( track->GetNet() != netcode )
continue;
Candidates.push_back( track );
}
// test if a candidate is inside a filled area of this zone
unsigned indexstart = 0, indexend;
for( indexend = 0; indexend < curr_zone->m_FilledPolysList.size(); indexend++ )
{
if( curr_zone->m_FilledPolysList[indexend].end_contour ) // end of a filled sub-area found
{
subnet++;
EDA_Rect bbox = curr_zone->CalculateSubAreaBoundaryBox( indexstart, indexend );
for( unsigned ic = 0; ic < Candidates.size(); ic++ )
{ // test if this area is connected to a board item:
item = Candidates[ic];
if( !item->IsOnLayer( curr_zone->GetLayer() ) )
continue;
wxPoint pos1, pos2;
if( item->Type() == TYPE_PAD )
{
pos1 = pos2 = ( (D_PAD*) item )->m_Pos;
}
else if( item->Type() == TYPE_VIA )
{
pos1 = pos2 = ( (SEGVIA*) item )->m_Start;
}
else if( item->Type() == TYPE_TRACK )
{
pos1 = ( (TRACK*) item )->m_Start;
pos2 = ( (TRACK*) item )->m_End;
}
else
continue;
bool connected = false;
if( bbox.Contains( pos1 ) )
{
if( TestPointInsidePolygon( curr_zone->m_FilledPolysList, indexstart,
indexend, pos1.x, pos1.y ) )
connected = true;
}
if( !connected && (pos1 != pos2 ) )
{
if( bbox.Contains( pos2 ) )
if( TestPointInsidePolygon( curr_zone->m_FilledPolysList, indexstart,
indexend, pos2.x, pos2.y ) )
connected = true;
}
if( connected )
{ // Set ZoneSubnet to the current subnet value.
// If the previous subnet is not 0, merge all items with old subnet to the new one
int old_subnet = 0;
old_subnet = item->GetZoneSubNet();
item->SetZoneSubNet( subnet );
if( (old_subnet > 0) && (old_subnet != subnet) ) // Merge previous subnet with the current
{
for( unsigned jj = 0; jj < Candidates.size(); jj++ )
{
BOARD_CONNECTED_ITEM* item_to_merge = Candidates[jj];
if( old_subnet == item_to_merge->GetZoneSubNet() )
item_to_merge->SetZoneSubNet( subnet );
}
} // End if ( old_subnet > 0 )
} // End if( connected )
}
// End test candidates for the current filled area
indexstart = indexend + 1; // prepare test next area, starting at indexend+1 (if exists)
} // End read one area in curr_zone->m_FilledPolysList
}
// End read full curr_zone->m_FilledPolysList
}
// End read all zones in board
}
/**************************************************************************************************/
void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb )
/**************************************************************************************************/
/**
* Function Merge_SubNets_Connected_By_CopperAreas(BOARD* aPcb)
* Calls Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb, int aNetcode ) for each netcode found in zone list
* @param aPcb = the current board
*/
{
for( int index = 0; index < aPcb->GetAreaCount(); index++ )
{
ZONE_CONTAINER* curr_zone = aPcb->GetArea( index );
if ( ! curr_zone->IsOnCopperLayer() )
continue;
if ( curr_zone->GetNet() <= 0 )
continue;
Merge_SubNets_Connected_By_CopperAreas( aPcb, curr_zone->GetNet() );
}
}
/**************************************************************************************************/
void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb, int aNetcode )
/**************************************************************************************************/
/**
* Function Merge_SubNets_Connected_By_CopperAreas(BOARD* aPcb, int aNetcode)
* Used after connections by tracks calculations
* Merge subnets, in tracks ans pads when they are connected by a filled copper area
* for pads, this is the .m_physical_connexion member which is tested and modified
* for tracks, this is the .m_Subnet member which is tested and modified
* these members are block numbers (or cluster numbers) for a given net,
* calculated by Build_Pads_Info_Connections_By_Tracks()
* The result is merging 2 blocks (or subnets)
* @param aPcb = the current board
* @param aNetcode = netcode to consider
*/
{
BOARD_CONNECTED_ITEM* item;
int old_subnet, subnet, next_subnet_free_number;
int old_zone_subnet, zone_subnet;
// Ensure a zone with the given netcode exists: examine all zones:
bool found = false;
for( int index = 0; index < aPcb->GetAreaCount(); index++ )
{
ZONE_CONTAINER* curr_zone = aPcb->GetArea( index );
if( aNetcode == curr_zone->GetNet() )
{
found = true;
break;
}
}
if( !found ) // No zone with this netcode, therefore no connection by zone
return;
std::vector <BOARD_CONNECTED_ITEM*> Candidates; // list of pads and tracks candidates to test.
// Build a list of candidates connected to the net:
next_subnet_free_number = 0;
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->m_Pads; pad != NULL; pad = pad->Next() )
{
if( pad->GetNet() == aNetcode )
{
Candidates.push_back( pad );
next_subnet_free_number = MAX( next_subnet_free_number, pad->GetSubNet() );
}
}
}
for( TRACK* track = aPcb->m_Track; track; track = track->Next() )
{
if( track->GetNet() == aNetcode )
{
Candidates.push_back( track );
next_subnet_free_number = MAX( next_subnet_free_number, track->GetSubNet() );
}
}
if( Candidates.size() == 0 )
return;
next_subnet_free_number++; // This is a subnet we can use with not connected items by tracks, but connected by zone.
// Sort by zone_subnet:
sort( Candidates.begin(), Candidates.end(), CmpZoneSubnetValue );
// Some items can be not connected, but they can be connected to a filled area:
// give them a subnet common to these items connected only by the area, and not already used.
// a value like next_subnet_free_number+zone_subnet is right
for( unsigned jj = 0; jj < Candidates.size(); jj++ )
{
item = Candidates[jj];
if ( item->GetSubNet() == 0 && (item->GetZoneSubNet() > 0) )
{
item->SetSubNet( next_subnet_free_number + item->GetZoneSubNet() );
}
}
// Now, for each zone subnet, we search for 2 items with different subnets.
// if found, the 2 subnet are merged in the whole candidate list.
old_subnet = 0;
old_zone_subnet = 0;
for( unsigned ii = 0; ii < Candidates.size(); ii++ )
{
item = Candidates[ii];
zone_subnet = item->GetZoneSubNet();
if( zone_subnet == 0 ) // Not connected by a filled area, skip it
continue;
subnet = item->GetSubNet();
if( zone_subnet != old_zone_subnet ) // a new zone subnet is found
{
old_subnet = subnet;
old_zone_subnet = zone_subnet;
continue;
}
zone_subnet = old_zone_subnet;
if( subnet == old_subnet ) // 2 successive items already from the same cluster: nothing to do
continue;
// Here we have 2 items connected by the same area have 2 differents subnets: merge subnets
if( (subnet > old_subnet) || ( subnet <= 0) )
EXCHG( subnet, old_subnet );
for( unsigned jj = 0; jj < Candidates.size(); jj++ )
{
BOARD_CONNECTED_ITEM * item_to_merge = Candidates[jj];
if( item_to_merge->GetSubNet() == old_subnet )
item_to_merge->SetSubNet( subnet );
}
old_subnet = subnet;
}
}
/* Compare function used for sorting candidates by increasing zone zubnet
*/
static bool CmpZoneSubnetValue( const BOARD_CONNECTED_ITEM* a, const BOARD_CONNECTED_ITEM* b )
{
int asubnet, bsubnet;
asubnet = a->GetZoneSubNet();
bsubnet = b->GetZoneSubNet();
return asubnet < bsubnet;
}
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