kicad/pcbnew/track.cpp

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/*********************************************/
/* Edition des pistes: Routines d'effacement */
/* Effacement de segment, piste, net et zone */
/*********************************************/
#include "fctsys.h"
#include "common.h"
#include "pcbnew.h"
#include "protos.h"
typedef std::vector<TRACK*> TRACK_PTRS;
/* Routines externes : */
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void Montre_Position_New_Piste( int flag );/* defini dans editrack.cc */
/* Routines Locales */
static void Marque_Chaine_segments( BOARD* Pcb, wxPoint ref_pos, int masklayer, TRACK_PTRS* aList );
/* Variables locales */
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/* Routine de Marquage de 1 piste, a partir du segment pointe par pt_segm.
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* le segment pointe est marque puis les segments connectes
* jusqu'a un pad ou un point de jonction de plus de 2 segments
* le marquage est la mise a 1 du bit BUSY
* Les segments sont ensuite reclasses pour etre contigus en liste chainee
* Retourne:
* adresse du 1er segment de la chaine creee
* nombre de segments
*/
/**
* Function Marque_Une_Piste
* marks a chain of track segments, starting at aTrackList.
* Each segment is marked by setting the BUSY bit into m_Flags. Electrical continuity
* is detected by walking each segment, and finally the segments are rearranged
* into a contiguous chain within the given list.
* @param aTrackList The first interesting segment within a list of many
* interesting and uninteresting segments.
* @return TRACK* the first in the chain of interesting segments.
*/
TRACK* Marque_Une_Piste( WinEDA_BasePcbFrame* frame, wxDC* DC,
TRACK* aTrackList, int* nb_segm, int flagcolor )
{
int NbSegmBusy;
TRACK_PTRS trackList;
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*nb_segm = 0;
if( aTrackList == NULL )
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return NULL;
if( flagcolor )
aTrackList->Draw( frame->DrawPanel, DC, flagcolor );
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// Ensure the flag BUSY is cleared because we use it to mark segments of the track
for( TRACK* track = frame->GetBoard()->m_Track; track; track = track->Next() )
track->SetState( BUSY , OFF );
/* Set flags of the initial track segment */
aTrackList->SetState( BUSY, ON );
int masque_layer = aTrackList->ReturnMaskLayer();
trackList.push_back( aTrackList );
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/* Examine the initial track segment : if it is really a segment, this is easy.
* If it is a via, one must search for connected segments.
* If <=2, this via connect 2 segments (or is connected to only one segment)
* and this via and these 2 segments are a part of a track.
* If > 2 only this via is flagged (the track has only this via)
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*/
if( aTrackList->Type() == TYPE_VIA )
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{
TRACK* Segm1, * Segm2 = NULL, * Segm3 = NULL;
Segm1 = Fast_Locate_Piste( frame->GetBoard()->m_Track, NULL,
aTrackList->m_Start, masque_layer );
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if( Segm1 )
{
Segm2 = Fast_Locate_Piste( Segm1->Next(), NULL,
aTrackList->m_Start, masque_layer );
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}
if( Segm2 )
{
Segm3 = Fast_Locate_Piste( Segm2->Next(), NULL,
aTrackList->m_Start, masque_layer );
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}
if( Segm3 ) // More than 2 segments are connected to this via. the "track" is only this via
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{
*nb_segm = 1;
return aTrackList;
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}
if( Segm1 ) // search for others segments connected to the initial segment start point
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{
masque_layer = Segm1->ReturnMaskLayer();
Marque_Chaine_segments( frame->GetBoard(), aTrackList->m_Start, masque_layer, &trackList );
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}
if( Segm2 ) // search for others segments connected to the initial segment end point
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{
masque_layer = Segm2->ReturnMaskLayer();
Marque_Chaine_segments( frame->GetBoard(), aTrackList->m_Start, masque_layer, &trackList );
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}
}
else // mark the chain using both ends of the initial segment
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{
Marque_Chaine_segments( frame->GetBoard(), aTrackList->m_Start, masque_layer, &trackList );
Marque_Chaine_segments( frame->GetBoard(), aTrackList->m_End, masque_layer, &trackList );
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}
// marquage des vias (vias non connectees ou inutiles
// go through the list backwards.
for( int i = trackList.size()-1; i>=0; --i )
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{
TRACK* via = trackList[i];
if( via->Type() != TYPE_VIA )
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continue;
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if( via == aTrackList )
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continue;
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via->SetState( BUSY, ON );
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masque_layer = via->ReturnMaskLayer();
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TRACK* track = Fast_Locate_Piste( frame->GetBoard()->m_Track,
NULL, via->m_Start, masque_layer );
if( track == NULL )
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continue;
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/* Test des connexions: si via utile: suppression marquage */
int layer = track->GetLayer();
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while( ( track = Fast_Locate_Piste( track->Next(), NULL,
via->m_Start, masque_layer ) ) != NULL )
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{
if( layer != track->GetLayer() )
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{
via->SetState( BUSY, OFF );
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break;
}
}
}
/* Reclassement des segments marques en une chaine */
NbSegmBusy = 0;
TRACK* firstTrack;
for( firstTrack = frame->GetBoard()->m_Track; firstTrack; firstTrack = firstTrack->Next() )
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{
// recherche du debut de la liste des segments marques a BUSY
if( firstTrack->GetState( BUSY ) )
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{
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NbSegmBusy = 1;
break;
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}
}
wxASSERT( firstTrack );
if( firstTrack )
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{
DLIST<TRACK>* list = (DLIST<TRACK>*)firstTrack->GetList();
wxASSERT(list);
/* Reclassement de la chaine debutant a FirstTrack et finissant
* au dernier segment marque. FirstTrack n'est pas modifie
*/
TRACK* next;
for( TRACK* track = firstTrack->Next(); track; track = next )
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{
next = track->Next();
if( track->GetState( BUSY ) )
{
NbSegmBusy++;
track->UnLink();
list->Insert( track, firstTrack->Next() );
}
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}
}
*nb_segm = NbSegmBusy;
if( flagcolor )
Trace_Une_Piste( frame->DrawPanel, DC, firstTrack, NbSegmBusy, flagcolor );
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return firstTrack;
}
/********************************************************************************/
static void Marque_Chaine_segments( BOARD* Pcb, wxPoint ref_pos, int masque_layer, TRACK_PTRS* aList )
/********************************************************************************/
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/*
* routine utilisee par Supprime_1_Piste()
* Positionne le bit BUSY dans la chaine de segments commencant
* au point ox, oy sur la couche layer
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*
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* Les vias sont mises en liste des segments traites mais ne sont pas
* marquees.
*/
{
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TRACK* pt_segm, // Pointe le segment courant analyse
* pt_via, // pointe la via reperee, eventuellement a detruire
* MarqSegm; // pointe le segment a detruire (= NULL ou pt_segm
int NbSegm;
if( Pcb->m_Track == NULL )
return;
/* Marquage de la chaine */
for( ; ; )
{
if( Fast_Locate_Pad_Connecte( Pcb, ref_pos, masque_layer ) != NULL )
return;
/* Localisation d'une via (car elle connecte plusieurs segments) */
pt_via = Fast_Locate_Via( Pcb->m_Track, NULL, ref_pos, masque_layer );
if( pt_via )
{
if( pt_via->GetState( EDIT ) )
return;
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masque_layer = pt_via->ReturnMaskLayer();
aList->push_back( pt_via );
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}
/* Recherche des segments connectes au point ref_pos
* si 1 segment: peut etre marque
* si > 1 segment:
* le segment ne peut etre marque
*/
pt_segm = Pcb->m_Track; MarqSegm = NULL;
NbSegm = 0;
while( ( pt_segm = Fast_Locate_Piste( pt_segm, NULL,
ref_pos, masque_layer ) ) != NULL )
{
if( pt_segm->GetState( EDIT ) ) /* Fin de piste */
return;
if( pt_segm->GetState( BUSY ) )
{
pt_segm = pt_segm->Next();
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continue;
}
if( pt_segm == pt_via ) /* deja traite */
{
pt_segm = pt_segm->Next();
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continue;
}
NbSegm++;
if( NbSegm == 1 ) /* 1ere detection de segment de piste */
{
MarqSegm = pt_segm;
pt_segm = pt_segm->Next();
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}
else /* 2eme detection de segment -> fin de piste */
{
return;
}
}
if( MarqSegm )
{
/* preparation de la nouvelle recherche */
masque_layer = MarqSegm->ReturnMaskLayer();
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if( ref_pos == MarqSegm->m_Start )
{
ref_pos = MarqSegm->m_End;
}
else
{
ref_pos = MarqSegm->m_Start;
}
pt_segm = Pcb->m_Track; /* reinit recherche des segments */
/* Marquage et mise en liste du segment */
aList->push_back( MarqSegm );
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MarqSegm->SetState( BUSY, ON );
}
else
return;
}
}
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/********************************************************/
int ReturnEndsTrack( TRACK* RefTrack, int NbSegm,
TRACK** StartTrack, TRACK** EndTrack )
/**********************************************************/
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/* Calcule les coordonnes des extremites d'une piste
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* retourne 1 si OK, 0 si piste bouclee
* Retourne dans *StartTrack en *EndTrack les segments de debut et fin
* Les coord StartTrack->m_Start.x, m_Start.y contiennent le debut de la piste
* Les coord EndTrack->m_End.x, m_End.y contiennent le debut de la piste
* Les segments sont supposes chaines de facon consecutive
*/
{
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TRACK* Track, * via, * segm, * TrackListEnd;
int NbEnds, masque_layer, ii, ok = 0;
if( NbSegm <= 1 )
{
*StartTrack = *EndTrack = RefTrack;
return 1; /* cas trivial */
}
/* calcul de la limite d'analyse */
*StartTrack = *EndTrack = NULL;
TrackListEnd = Track = RefTrack; ii = 0;
for( ; (Track != NULL) && (ii < NbSegm); ii++, Track = Track->Next() )
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{
TrackListEnd = Track;
Track->m_Param = 0;
}
/* Calcul des extremites */
NbEnds = 0; Track = RefTrack; ii = 0;
for( ; (Track != NULL) && (ii < NbSegm); ii++, Track = Track->Next() )
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{
if( Track->Type() == TYPE_VIA )
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continue;
masque_layer = Track->ReturnMaskLayer();
via = Fast_Locate_Via( RefTrack, TrackListEnd,
Track->m_Start, masque_layer );
if( via )
{
masque_layer |= via->ReturnMaskLayer();
via->SetState( BUSY, ON );
}
Track->SetState( BUSY, ON );
segm = Fast_Locate_Piste( RefTrack, TrackListEnd,
Track->m_Start, masque_layer );
Track->SetState( BUSY, OFF );
if( via )
via->SetState( BUSY, OFF );
if( segm == NULL )
{
switch( NbEnds )
{
case 0:
*StartTrack = Track; NbEnds++;
break;
case 1:
int BeginPad, EndPad;
*EndTrack = Track;
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/* permutation de ox,oy avec fx,fy */
BeginPad = Track->GetState( BEGIN_ONPAD );
EndPad = Track->GetState( END_ONPAD );
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Track->SetState( BEGIN_ONPAD | END_ONPAD, OFF );
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if( BeginPad )
Track->SetState( END_ONPAD, ON );
if( EndPad )
Track->SetState( BEGIN_ONPAD, ON );
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EXCHG( Track->m_Start, Track->m_End );
EXCHG( Track->start, Track->end );
ok = 1;
return ok;
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}
}
masque_layer = Track->ReturnMaskLayer();
via = Fast_Locate_Via( RefTrack, TrackListEnd,
Track->m_End, masque_layer );
if( via )
{
masque_layer |= via->ReturnMaskLayer();
via->SetState( BUSY, ON );
}
Track->SetState( BUSY, ON );
segm = Fast_Locate_Piste( RefTrack, TrackListEnd,
Track->m_End, masque_layer );
Track->SetState( BUSY, OFF );
if( via )
via->SetState( BUSY, OFF );
if( segm == NULL )
{
switch( NbEnds )
{
case 0:
int BeginPad, EndPad;
*StartTrack = Track;
NbEnds++;
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/* permutation de ox,oy avec fx,fy */
BeginPad = Track->GetState( BEGIN_ONPAD );
EndPad = Track->GetState( END_ONPAD );
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Track->SetState( BEGIN_ONPAD | END_ONPAD, OFF );
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if( BeginPad )
Track->SetState( END_ONPAD, ON );
if( EndPad )
Track->SetState( BEGIN_ONPAD, ON );
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EXCHG( Track->m_Start, Track->m_End );
EXCHG( Track->start, Track->end );
break;
case 1:
*EndTrack = Track;
ok = 1;
return ok;
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}
}
}
return ok;
}
/***************************************************************************/
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void ListSetState( EDA_BaseStruct* Start, int NbItem, int State, int onoff )
/***************************************************************************/
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/* Met a jour le membre .state d'une chaine de structures
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*/
{
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if( Start == NULL )
return;
for( ; (Start != NULL) && (NbItem > 0); NbItem--, Start = Start->Next() )
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{
Start->SetState( State, onoff );
}
}