830 lines
29 KiB
C++
830 lines
29 KiB
C++
/***************************************************************************************/
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/* Rastnest calculations: Function to handle existing tracks in rastsnest calculations */
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/***************************************************************************************/
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#include "fctsys.h"
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#include "gr_basic.h"
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#include "common.h"
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#include "pcbnew.h"
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#include "protos.h"
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//#include <algorithm>
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extern void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb );
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extern void Merge_SubNets_Connected_By_CopperAreas( BOARD* aPcb, int aNetcode );
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/* Local functions */
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static void Propagate_SubNet( TRACK* pt_start_conn, TRACK* pt_end_conn );
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static void Build_Pads_Info_Connections_By_Tracks( TRACK* pt_start_conn, TRACK* pt_end_conn );
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static void RebuildTrackChain( BOARD* pcb );
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/*..*/
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/**************************************************************************************************/
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static int Merge_Two_SubNets( TRACK* pt_start_conn, TRACK* pt_end_conn, int old_val, int new_val )
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/**************************************************************************************************/
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/**
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* Function Merge_Two_SubNets
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* Used by Propagate_SubNet()
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* Change a subnet value to a new value, for tracks ans pads which are connected to corresponding track
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* for pads and tracks, this is the .m_Subnet member that is tested and modified
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* these members are block numbers (or cluster numbers) for a given net
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* The result is merging 2 blocks (or subnets)
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* @return modification count
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* @param old_val = subnet value to modify
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* @param new_val = new subnet value for each item whith have old_val as subnet value
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* @param pt_start_conn = first track segment to test
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* @param pt_end_conn = last track segment to test
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* If pt_end_conn = NULL: search is made from pt_start_conn to end of linked list
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*/
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{
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TRACK* pt_conn;
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int nb_change = 0;
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D_PAD* pt_pad;
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if( old_val == new_val )
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return 0;
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if( (old_val > 0) && (old_val < new_val) )
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EXCHG( old_val, new_val );
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pt_conn = pt_start_conn;
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for( ; pt_conn != NULL; pt_conn = pt_conn->Next() )
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{
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if( pt_conn->GetSubNet() != old_val )
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{
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if( pt_conn == pt_end_conn )
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break;
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continue;
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}
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nb_change++;
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pt_conn->SetSubNet( new_val );
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if( pt_conn->start && ( pt_conn->start->Type() == TYPE_PAD) )
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{
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pt_pad = (D_PAD*) (pt_conn->start);
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if( pt_pad->GetSubNet() == old_val )
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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if( pt_conn->end && (pt_conn->end->Type() == TYPE_PAD) )
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{
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pt_pad = (D_PAD*) (pt_conn->end);
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if( pt_pad->GetSubNet() == old_val )
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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if( pt_conn == pt_end_conn )
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break;
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}
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return nb_change;
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}
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/******************************************************************/
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static void Propagate_SubNet( TRACK* pt_start_conn, TRACK* pt_end_conn )
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/******************************************************************/
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/**
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* Function Propagate_SubNet
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* Test a list of track segment, to create or propagate a sub netcode to pads and segments connected together
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* the track list must be sorted by nets, and all segments from pt_start_conn to pt_end_conn have the same net
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* When 2 items are connected (a track to a pad, or a track to an other track) they are grouped in a cluster.
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* for pads, this is the .m_physical_connexion member which is a cluster identifier
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* for tracks, this is the .m_Subnet member which is a cluster identifier
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* For a given net, if all tracks are created, there is only one cluster.
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* but if not all tracks are created, there are more than one cluster, and some ratsnets will be shown.
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* @param pt_start_conn = first track to test
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* @param pt_end_conn = last segment to test
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*/
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{
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TRACK* pt_conn;
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int sub_netcode;
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D_PAD* pt_pad;
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TRACK* pt_autre_piste;
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BOARD_ITEM* PtStruct;
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/* Clear variables used in computations */
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pt_conn = pt_start_conn;
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for( ; pt_conn != NULL; pt_conn = pt_conn->Next() )
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{
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pt_conn->SetSubNet( 0 );
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PtStruct = pt_conn->start;
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if( PtStruct && (PtStruct->Type() == TYPE_PAD) )
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( (D_PAD*) PtStruct )->SetSubNet( 0 );
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PtStruct = pt_conn->end;
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if( PtStruct && (PtStruct->Type() == TYPE_PAD) )
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( (D_PAD*) PtStruct )->SetSubNet( 0 );
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if( pt_conn == pt_end_conn )
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break;
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}
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sub_netcode = 1;
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pt_start_conn->SetSubNet( sub_netcode );
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/* Start of calculation */
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pt_conn = pt_start_conn;
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for( ; pt_conn != NULL; pt_conn = pt_conn->Next() )
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{
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/* First: handling connections to pads */
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PtStruct = pt_conn->start;
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/* The segment starts on a pad */
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if( PtStruct && (PtStruct->Type() == TYPE_PAD) )
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{
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pt_pad = (D_PAD*) PtStruct;
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if( pt_conn->GetSubNet() ) /* the track segment is already a cluster member */
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{
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if( pt_pad->GetSubNet() > 0 ) /* The pad is already a cluster member, so we can merge the 2 clusters */
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{
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Merge_Two_SubNets( pt_start_conn, pt_end_conn,
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pt_pad->GetSubNet(), pt_conn->GetSubNet() );
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}
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else /* The pad is not yet attached to a cluster , so we can add this pad to the cluster */
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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else /* the track segment is not attached to a cluster */
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{
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if( pt_pad->GetSubNet() > 0 ) /* it is connected to a pad in a cluster, merge this track */
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{
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pt_conn->SetSubNet( pt_pad->GetSubNet() );
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}
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else /* it is connected to a pad not in a cluster, so we must create a new cluster (only with the 2 items: the track and the pad) */
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{
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sub_netcode++;
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pt_conn->SetSubNet( sub_netcode );
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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}
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}
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PtStruct = pt_conn->end;
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if( PtStruct && (PtStruct->Type() == TYPE_PAD) )
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/* The segment end on a pad */
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{
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pt_pad = (D_PAD*) PtStruct;
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if( pt_conn->GetSubNet() )
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{
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if( pt_pad->GetSubNet() > 0 )
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{
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Merge_Two_SubNets( pt_start_conn, pt_end_conn,
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pt_pad->GetSubNet(), pt_conn->GetSubNet() );
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}
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else
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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else
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{
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if( pt_pad->GetSubNet() > 0 )
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{
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pt_conn->SetSubNet( pt_pad->GetSubNet() );
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}
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else
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{
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sub_netcode++;
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pt_conn->SetSubNet( sub_netcode );
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pt_pad->SetSubNet( pt_conn->GetSubNet() );
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}
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}
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}
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/* Test connections between segments */
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PtStruct = pt_conn->start;
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if( PtStruct && (PtStruct->Type() != TYPE_PAD) )
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{
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/* The segment starts on an other track */
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pt_autre_piste = (TRACK*) PtStruct;
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if( pt_conn->GetSubNet() ) /* the track segment is already a cluster member */
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{
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if( pt_autre_piste->GetSubNet() ) /* The other track is already a cluster member, so we can merge the 2 clusters */
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{
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Merge_Two_SubNets( pt_start_conn, pt_end_conn,
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pt_autre_piste->GetSubNet(), pt_conn->GetSubNet() );
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}
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else /* The other track is not yet attached to a cluster , so we can add this other track to the cluster */
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{
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pt_autre_piste->SetSubNet( pt_conn->GetSubNet() );
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}
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}
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else /* the track segment is not yet attached to a cluster */
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{
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if( pt_autre_piste->GetSubNet() ) /* The other track is already a cluster member, so we can add the segment to the cluster */
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{
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pt_conn->SetSubNet( pt_autre_piste->GetSubNet() );
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}
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else /* it is connected to an other segment not in a cluster, so we must create a new cluster (only with the 2 track segments) */
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{
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sub_netcode++;
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pt_conn->SetSubNet( sub_netcode );
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pt_autre_piste->SetSubNet( pt_conn->GetSubNet() );
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}
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}
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}
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PtStruct = pt_conn->end; // Do the same calculations for the segment end point
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if( PtStruct && (PtStruct->Type() != TYPE_PAD) )
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{
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pt_autre_piste = (TRACK*) PtStruct;
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if( pt_conn->GetSubNet() ) /* the track segment is already a cluster member */
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{
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if( pt_autre_piste->GetSubNet() )
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{
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Merge_Two_SubNets( pt_start_conn, pt_end_conn,
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pt_autre_piste->GetSubNet(), pt_conn->GetSubNet() );
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}
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else
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pt_autre_piste->SetSubNet( pt_conn->GetSubNet() );
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}
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else /* the track segment is not yet attached to a cluster */
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{
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if( pt_autre_piste->GetSubNet() )
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{
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pt_conn->SetSubNet( pt_autre_piste->GetSubNet() );
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}
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else
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{
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sub_netcode++;
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pt_conn->SetSubNet( sub_netcode );
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pt_autre_piste->SetSubNet( pt_conn->GetSubNet() );
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}
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}
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}
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if( pt_conn == pt_end_conn )
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break;
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}
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}
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/***************************************************/
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void PCB_BASE_FRAME::test_connexions( wxDC* DC )
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/***************************************************/
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/**
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* Function testing the connections relative to all nets
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* This function update the status of the ratsnest ( flag CH_ACTIF = 0 if a connection is found, = 1 else)
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* track segments are assumed to be sorted by net codes.
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* This is the case because when a new track is added, it is inserted in the linked list according to its net code.
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* and when nets are changed (when a new netlist is read) tracks are sorted before using this function
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* @param DC = current Device Context
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*/
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{
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// Clear the cluster identifier for all pads
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for( unsigned i = 0; i< m_Pcb->GetPadsCount(); ++i )
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{
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D_PAD* pad = m_Pcb->m_NetInfo->GetPad(i);
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pad->SetZoneSubNet( 0 );
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pad->SetSubNet( 0 );
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}
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m_Pcb->Test_Connections_To_Copper_Areas();
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// Test existing connections net by net
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for( TRACK* track = m_Pcb->m_Track; track; )
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{
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// this is the current net because pt_start_conn is the first segment of the net
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int current_net_code = track->GetNet();
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// this is the last segment of the current net
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TRACK* pt_end_conn = track->GetEndNetCode( current_net_code );
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Build_Pads_Info_Connections_By_Tracks( track, pt_end_conn );
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track = pt_end_conn->Next(); // this is now the first segment of the next net
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}
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Merge_SubNets_Connected_By_CopperAreas( m_Pcb );
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return;
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}
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/*************************************************************************/
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void PCB_BASE_FRAME::test_1_net_connexion( wxDC* DC, int net_code )
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/*************************************************************************/
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/**
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* Function testing the connections relative to a given net
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* track segments are assumed to be sorted by net codes
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* @param DC = current Device Context
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* @param net_code = net code to test
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*/
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{
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wxString msg;
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if( net_code == 0 )
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return;
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if( (m_Pcb->m_Status_Pcb & LISTE_RATSNEST_ITEM_OK) == 0 )
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Compile_Ratsnest( DC, TRUE );
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for( unsigned i = 0; i<m_Pcb->GetPadsCount(); ++i )
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{
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D_PAD* pad = m_Pcb->m_NetInfo->GetPad(i);
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int pad_net_code = pad->GetNet();
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if( pad_net_code < net_code )
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continue;
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if( pad_net_code > net_code )
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break;
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pad->SetSubNet( 0 );
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}
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m_Pcb->Test_Connections_To_Copper_Areas( net_code );
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/* Search for the first and the last segment relative to the given net code */
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if( m_Pcb->m_Track )
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{
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TRACK* pt_start_conn;
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TRACK* pt_end_conn = NULL;
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pt_start_conn = m_Pcb->m_Track.GetFirst()->GetStartNetCode( net_code );
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if( pt_start_conn )
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pt_end_conn = pt_start_conn->GetEndNetCode( net_code );
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if( pt_start_conn && pt_end_conn ) // c.a.d. s'il y a des segments
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{
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Build_Pads_Info_Connections_By_Tracks( pt_start_conn, pt_end_conn );
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}
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}
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Merge_SubNets_Connected_By_CopperAreas( m_Pcb, net_code );
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/* Test the rastnest for this net */
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int nb_net_noconnect = Test_1_Net_Ratsnest( DC, net_code );
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/* Display results */
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msg.Printf( wxT( "links %d nc %d net:nc %d" ),
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m_Pcb->GetRatsnestsCount(), m_Pcb->GetNoconnectCount(),
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nb_net_noconnect );
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SetStatusText( msg );
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return;
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}
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/*******************************************************************************************/
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static void Build_Pads_Info_Connections_By_Tracks( TRACK* pt_start_conn, TRACK* pt_end_conn )
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/*******************************************************************************************/
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/** Used after a track change (delete a track ou add a track)
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* Compute connections (initialize the .start and .end members) for a single net.
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* tracks must be sorted by net, as usual
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* @param pt_start_conn = first segment of the net
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* @param pt_end_conn = last segment of the net
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* Connections to pads are assumed to be already initialized.
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* If a track is deleted, the other pointers to pads do not change.
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* When a track is added, its pointers to pads are already initialized
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*/
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{
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TRACK* Track;
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/* Reset the old connections type track to track */
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for( Track = pt_start_conn; Track != NULL; Track = Track->Next() )
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{
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Track->SetSubNet( 0 );
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if( Track->GetState( BEGIN_ONPAD ) == 0 )
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Track->start = NULL;
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if( Track->GetState( END_ONPAD ) == 0 )
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Track->end = NULL;
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if( Track == pt_end_conn )
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break;
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}
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/* Update connections type track to track */
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for( Track = pt_start_conn; Track != NULL; Track = Track->Next() )
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{
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if( Track->Type() == TYPE_VIA ) // A via can connect many tracks, we must search for all track segments in this net
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{
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TRACK* pt_segm;
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int layermask = Track->ReturnMaskLayer();
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for( pt_segm = pt_start_conn; pt_segm != NULL; pt_segm = pt_segm->Next() )
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{
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int curlayermask = pt_segm->ReturnMaskLayer();
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if( !pt_segm->start && (pt_segm->m_Start == Track->m_Start)
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&& ( layermask & curlayermask ) )
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{
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pt_segm->start = Track;
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}
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if( !pt_segm->end && (pt_segm->m_End == Track->m_Start)
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&& (layermask & curlayermask) )
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{
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pt_segm->end = Track;
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}
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if( pt_segm == pt_end_conn )
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break;
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}
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}
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if( Track->start == NULL ) // end track not already connected, search a connection
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{
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Track->start = Locate_Piste_Connectee( Track, Track, pt_end_conn, START );
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}
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if( Track->end == NULL ) // end track not already connected, search a connection
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{
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Track->end = Locate_Piste_Connectee( Track, Track, pt_end_conn, END );
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}
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if( Track == pt_end_conn )
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break;
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}
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/* Creates sub nets (cluster) for the current net: */
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Propagate_SubNet( pt_start_conn, pt_end_conn );
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}
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#define POS_AFF_CHREF 62
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/**
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* Function SuperFast_Locate_Pad_Connecte
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* locates the pad connected to a track ended at coord px, py.
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* A track is seen as connected if the px, py position is same as the pad position.
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*
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* @param aPcb = the board.
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* @param pt_liste = Pointers to pads buffer
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* This buffer is a list like the list created by build_liste_pad, but sorted by increasing X pad coordinate
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* @param posref = reference coordinate
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* @param masque_layer = Layers (bit to bit) to consider
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* @return : pointer on the connected pad
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* This function uses a fast search in this sorted pad list and it is faster than Fast_Locate_Pad_connecte(),
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* But this sorted pad list must be built before calling this function.
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*
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* (Note: The usual pad list (created by build_liste_pad) m_Pcb->m_Pads is sorted by increasing netcodes )
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*/
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static D_PAD* SuperFast_Locate_Pad_Connecte( BOARD* aPcb, LISTE_PAD* pt_liste,
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const wxPoint& posref, int masque_layer )
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{
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D_PAD* pad;
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int ii;
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int nb_pad = aPcb->GetPadsCount();
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LISTE_PAD* ptr_pad = pt_liste;
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LISTE_PAD* lim = pt_liste + nb_pad - 1;
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ptr_pad = pt_liste;
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while( nb_pad )
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{
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pad = *ptr_pad;
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ii = nb_pad;
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nb_pad >>= 1;
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if( (ii & 1) && ( ii > 1 ) )
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nb_pad++;
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if( pad->m_Pos.x < posref.x ) /* Must search after this item */
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{
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ptr_pad += nb_pad;
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if( ptr_pad > lim )
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ptr_pad = lim;
|
|
continue;
|
|
}
|
|
if( pad->m_Pos.x > posref.x ) /* Must search before this item */
|
|
{
|
|
ptr_pad -= nb_pad;
|
|
if( ptr_pad < pt_liste )
|
|
ptr_pad = pt_liste;
|
|
continue;
|
|
}
|
|
|
|
if( pad->m_Pos.x == posref.x ) /* A suitable block is found (X coordinate matches the px reference: but wue must matches the Y coordinate */
|
|
{
|
|
/* Search the beginning of the block */
|
|
while( ptr_pad >= pt_liste )
|
|
{
|
|
pad = *ptr_pad;
|
|
if( pad->m_Pos.x == posref.x )
|
|
ptr_pad--;
|
|
else
|
|
break;
|
|
}
|
|
|
|
ptr_pad++; /* ptr_pad = first pad which have pad->m_Pos.x = px */
|
|
|
|
for( ; ; ptr_pad++ )
|
|
{
|
|
if( ptr_pad > lim )
|
|
return NULL; /* outside suitable block */
|
|
|
|
pad = *ptr_pad;
|
|
if( pad->m_Pos.x != posref.x )
|
|
return NULL; /* outside suitable block */
|
|
|
|
if( pad->m_Pos.y != posref.y )
|
|
continue;
|
|
|
|
/* A Pad if found here: but it must mach the layer */
|
|
if( pad->m_Masque_Layer & masque_layer ) // Matches layer => a connected pad is found !
|
|
return pad;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Function SortPadsByXCoord
|
|
* is used to Sort a pad list by x coordinate value.
|
|
*/
|
|
static int SortPadsByXCoord( const void* pt_ref, const void* pt_comp )
|
|
{
|
|
D_PAD* ref = *(LISTE_PAD*) pt_ref;
|
|
D_PAD* comp = *(LISTE_PAD*) pt_comp;
|
|
|
|
return ref->m_Pos.x - comp->m_Pos.x;
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
void CreateSortedPadListByXCoord( BOARD* aBoard, std::vector<D_PAD*>* aVector )
|
|
/*****************************************************************************/
|
|
{
|
|
aVector->insert( aVector->end(), aBoard->m_NetInfo->m_PadsFullList.begin(), aBoard->m_NetInfo->m_PadsFullList.end() );
|
|
|
|
qsort( &(*aVector)[0], aBoard->GetPadsCount(), sizeof( D_PAD*), SortPadsByXCoord );
|
|
}
|
|
|
|
|
|
/********************************************************************/
|
|
void PCB_BASE_FRAME::RecalculateAllTracksNetcode()
|
|
/********************************************************************/
|
|
|
|
/* search connections between tracks and pads, and propagate pad net codes to the track segments
|
|
* This is a 2 pass computation.
|
|
* First:
|
|
* We search a connection between a track segment and a pad: if found : this segment netcode is set to the pad netcode
|
|
*/
|
|
{
|
|
TRACK* pt_piste;
|
|
TRACK* pt_next;
|
|
int a_color;
|
|
char new_passe_request = 1, flag;
|
|
|
|
std::vector<D_PAD*> sortedPads;
|
|
BOARD_ITEM* PtStruct;
|
|
int masque_layer;
|
|
wxString msg;
|
|
|
|
// Build the net info list
|
|
GetBoard()->m_NetInfo->BuildListOfNets();
|
|
|
|
if( m_Pcb->GetPadsCount() == 0 ) // If no pad, reset pointers and netcode, and do nothing else
|
|
{
|
|
pt_piste = m_Pcb->m_Track;
|
|
for( ; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
pt_piste->start = NULL;
|
|
pt_piste->SetState( BEGIN_ONPAD | END_ONPAD, OFF );
|
|
pt_piste->SetNet( 0 );
|
|
pt_piste->end = NULL;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/**************************************************************/
|
|
/* Pass 1: search the connections between track ends and pads */
|
|
/**************************************************************/
|
|
CreateSortedPadListByXCoord( m_Pcb, &sortedPads );
|
|
|
|
/* Reset variables and flags used in computation */
|
|
pt_piste = m_Pcb->m_Track;
|
|
for( ; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
pt_piste->SetState( BUSY | IN_EDIT | BEGIN_ONPAD | END_ONPAD, OFF );
|
|
pt_piste->SetZoneSubNet( 0 );
|
|
pt_piste->SetNet( 0 ); // net code = 0 means not connected
|
|
}
|
|
|
|
/* First pass: search connection between a track segment and a pad.
|
|
* if found, set the track net code to the pad netcode
|
|
*/
|
|
pt_piste = m_Pcb->m_Track;
|
|
for( ; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
flag = 0;
|
|
masque_layer = g_TabOneLayerMask[pt_piste->GetLayer()];
|
|
|
|
/* Search for a pad on the segment starting point */
|
|
pt_piste->start = SuperFast_Locate_Pad_Connecte( m_Pcb,
|
|
&sortedPads[0],
|
|
pt_piste->m_Start,
|
|
masque_layer );
|
|
if( pt_piste->start != NULL )
|
|
{
|
|
pt_piste->SetState( BEGIN_ONPAD, ON );
|
|
pt_piste->SetNet( ( (D_PAD*) (pt_piste->start) )->GetNet() );
|
|
}
|
|
|
|
/* Search for a pad on the segment ending point */
|
|
pt_piste->end = SuperFast_Locate_Pad_Connecte( m_Pcb,
|
|
&sortedPads[0],
|
|
pt_piste->m_End,
|
|
masque_layer );
|
|
|
|
if( pt_piste->end != NULL )
|
|
{
|
|
pt_piste->SetState( END_ONPAD, ON );
|
|
pt_piste->SetNet( ( (D_PAD*) (pt_piste->end) )->GetNet() );
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************/
|
|
/* Pass 2: search the connections between track ends */
|
|
/*****************************************************/
|
|
|
|
/* the .start et .end member pointers are updated, only if NULLs
|
|
* (if not nuls, the end is already connected to a pad).
|
|
* the connection (if found) is between segments
|
|
* when a track has a net code and the other has a null net code, the null net code is changed
|
|
*/
|
|
|
|
for( pt_piste = m_Pcb->m_Track; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
if( pt_piste->start == NULL )
|
|
{
|
|
pt_piste->start = Locate_Piste_Connectee( pt_piste, m_Pcb->m_Track, NULL, START );
|
|
}
|
|
|
|
if( pt_piste->end == NULL )
|
|
{
|
|
pt_piste->end = Locate_Piste_Connectee( pt_piste, m_Pcb->m_Track, NULL, END );
|
|
}
|
|
}
|
|
|
|
/**********************************************************/
|
|
/* Propagate net codes from a segment to an other segment */
|
|
/**********************************************************/
|
|
|
|
a_color = YELLOW;
|
|
|
|
while( new_passe_request )
|
|
{
|
|
bool reset_flag = FALSE;
|
|
new_passe_request = 0;
|
|
|
|
/* look for vias which could be connect many tracks */
|
|
for( TRACK* via = m_Pcb->m_Track; via != NULL; via = via->Next() )
|
|
{
|
|
if( via->Type() != TYPE_VIA )
|
|
continue;
|
|
|
|
if( via->GetNet() > 0 )
|
|
continue; // Netcode already known
|
|
|
|
// Lock for a connection to a track with a known netcode
|
|
pt_next = m_Pcb->m_Track;
|
|
while( ( pt_next = Locate_Piste_Connectee( via, pt_next, NULL, START ) ) != NULL )
|
|
{
|
|
if( pt_next->GetNet() )
|
|
{
|
|
via->SetNet( pt_next->GetNet() );
|
|
break;
|
|
}
|
|
pt_next->SetState( BUSY, ON );
|
|
reset_flag = TRUE;
|
|
}
|
|
}
|
|
|
|
if( reset_flag )
|
|
for( pt_piste = m_Pcb->m_Track; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
pt_piste->SetState( BUSY, OFF );
|
|
}
|
|
|
|
/* set the netcode of connected tracks: if at track is connected to a pad, its net code is already set.
|
|
* if the current track is connected to an other track:
|
|
* if a track has a net code, it is used for the other track.
|
|
* Thus there is a propagation of the netcode from a track to an other.
|
|
* if none of the 2 track has a net code we do nothing
|
|
* the iteration is stopped when no new change occurs
|
|
*/
|
|
for( pt_piste = m_Pcb->m_Track; pt_piste != NULL; pt_piste = pt_piste->Next() )
|
|
{
|
|
/* look for the connection to the current segment starting point */
|
|
PtStruct = (BOARD_ITEM*) pt_piste->start;
|
|
if( PtStruct && (PtStruct->Type() != TYPE_PAD) )
|
|
{
|
|
// Begin on an other track segment
|
|
pt_next = (TRACK*) PtStruct;
|
|
if( pt_piste->GetNet() )
|
|
{
|
|
if( pt_next->GetNet() == 0 ) // the current track has a netcode, we use it for the other track
|
|
{
|
|
new_passe_request = 1; // A change is made: a new iteration is requested.
|
|
pt_next->SetNet( pt_piste->GetNet() );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( pt_next->GetNet() != 0 ) // the other track has a netcode, we use it for the current track
|
|
{
|
|
pt_piste->SetNet( pt_next->GetNet() );
|
|
new_passe_request = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* look for the connection to the current segment ending point */
|
|
PtStruct = pt_piste->end;
|
|
if( PtStruct &&(PtStruct->Type() != TYPE_PAD) )
|
|
{
|
|
pt_next = (TRACK*) PtStruct;
|
|
|
|
// End on an other track: propagate netcode if possible
|
|
if( pt_piste->GetNet() )
|
|
{
|
|
if( pt_next->GetNet() == 0 )
|
|
{
|
|
new_passe_request = 1;
|
|
pt_next->SetNet( pt_piste->GetNet() );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( pt_next->GetNet() != 0 )
|
|
{
|
|
pt_piste->SetNet( pt_next->GetNet() );
|
|
new_passe_request = 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Sort the track list by net codes: */
|
|
RebuildTrackChain( m_Pcb );
|
|
}
|
|
|
|
|
|
/**
|
|
* Function Sort_By_NetCode
|
|
* sorts track segments used in RebuildTrackChain() (for the qsort C function)
|
|
* The sorting is made by net code.
|
|
*/
|
|
static int Sort_By_NetCode( const void* left, const void* right )
|
|
{
|
|
TRACK* pt_ref = *(TRACK**) left;
|
|
TRACK* pt_compare = *(TRACK**) right;
|
|
|
|
int ret = pt_ref->GetNet() - pt_compare->GetNet();
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/**
|
|
* Function RebuildTrackChain
|
|
* rebuilds the track segment linked list in order to have a chain
|
|
* sorted by increasing netcodes.
|
|
* @param pcb = board to rebuild
|
|
*/
|
|
static void RebuildTrackChain( BOARD* pcb )
|
|
{
|
|
if( pcb->m_Track == NULL )
|
|
return;
|
|
|
|
int nbsegm = pcb->m_Track.GetCount();
|
|
|
|
TRACK** array = (TRACK**) MyZMalloc( nbsegm * sizeof(TRACK*) );
|
|
|
|
for( int i = 0; i<nbsegm; ++i )
|
|
{
|
|
array[i] = pcb->m_Track.PopFront();
|
|
wxASSERT( array[i] );
|
|
}
|
|
|
|
// the list is empty now
|
|
wxASSERT( pcb->m_Track == NULL && pcb->m_Track.GetCount()==0 );
|
|
|
|
qsort( array, nbsegm, sizeof(TRACK*), Sort_By_NetCode );
|
|
|
|
// add them back to the list
|
|
for( int i = 0; i<nbsegm; ++i )
|
|
{
|
|
pcb->m_Track.PushBack( array[i] );
|
|
}
|
|
|
|
MyFree( array );
|
|
}
|