1 /*
2 * This program source code file is part of KiCad, a free EDA CAD application.
3 *
4 * Copyright (C) 2004 Jean-Pierre Charras, jp.charras at wanadoo.fr
5 * Copyright (C) 2004-2021 KiCad Developers, see AUTHORS.txt for contributors.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, you may find one here:
19 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
20 * or you may search the http://www.gnu.org website for the version 2 license,
21 * or you may write to the Free Software Foundation, Inc.,
22 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
23 */
24
25 #include <sch_draw_panel.h>
26 #include <bitmaps.h>
27 #include <core/mirror.h>
28 #include <schematic.h>
29 #include <sch_bus_entry.h>
30 #include <sch_edit_frame.h>
31 #include <sch_junction.h>
32 #include <sch_line.h>
33 #include <sch_text.h>
34 #include <project/net_settings.h>
35 #include <project/project_file.h>
36 #include <settings/color_settings.h>
37 #include <netclass.h>
38 #include <trigo.h>
39 #include <board_item.h>
40 #include <advanced_config.h>
41 #include <connection_graph.h>
42 #include "sch_painter.h"
43
44
SCH_BUS_ENTRY_BASE(KICAD_T aType,const wxPoint & pos,bool aFlipY)45 SCH_BUS_ENTRY_BASE::SCH_BUS_ENTRY_BASE( KICAD_T aType, const wxPoint& pos, bool aFlipY ) :
46 SCH_ITEM( nullptr, aType )
47 {
48 m_pos = pos;
49 m_size.x = Mils2iu( DEFAULT_SCH_ENTRY_SIZE );
50 m_size.y = Mils2iu( DEFAULT_SCH_ENTRY_SIZE );
51
52 m_stroke.SetWidth( 0 );
53 m_stroke.SetPlotStyle( PLOT_DASH_TYPE::DEFAULT );
54 m_stroke.SetColor( COLOR4D::UNSPECIFIED );
55
56 if( aFlipY )
57 m_size.y *= -1;
58
59 m_isDanglingStart = m_isDanglingEnd = true;
60
61 m_lastResolvedWidth = Mils2iu( DEFAULT_WIRE_WIDTH_MILS );
62 m_lastResolvedLineStyle = PLOT_DASH_TYPE::SOLID;
63 m_lastResolvedColor = COLOR4D::UNSPECIFIED;
64 }
65
66
SCH_BUS_WIRE_ENTRY(const wxPoint & pos,bool aFlipY)67 SCH_BUS_WIRE_ENTRY::SCH_BUS_WIRE_ENTRY( const wxPoint& pos, bool aFlipY ) :
68 SCH_BUS_ENTRY_BASE( SCH_BUS_WIRE_ENTRY_T, pos, aFlipY )
69 {
70 m_layer = LAYER_WIRE;
71 m_connected_bus_item = nullptr;
72
73 m_lastResolvedWidth = Mils2iu( DEFAULT_WIRE_WIDTH_MILS );
74 m_lastResolvedLineStyle = PLOT_DASH_TYPE::SOLID;
75 m_lastResolvedColor = COLOR4D::UNSPECIFIED;
76 }
77
78
SCH_BUS_WIRE_ENTRY(const wxPoint & pos,int aQuadrant)79 SCH_BUS_WIRE_ENTRY::SCH_BUS_WIRE_ENTRY( const wxPoint& pos, int aQuadrant ) :
80 SCH_BUS_ENTRY_BASE( SCH_BUS_WIRE_ENTRY_T, pos, false )
81 {
82 switch( aQuadrant )
83 {
84 case 1: m_size.x *= 1; m_size.y *= -1; break;
85 case 2: m_size.x *= 1; m_size.y *= 1; break;
86 case 3: m_size.x *= -1; m_size.y *= 1; break;
87 case 4: m_size.x *= -1; m_size.y *= -1; break;
88 default: wxFAIL_MSG( "SCH_BUS_WIRE_ENTRY ctor: unexpected quadrant" );
89 }
90
91 m_layer = LAYER_WIRE;
92 m_connected_bus_item = nullptr;
93
94 m_lastResolvedWidth = Mils2iu( DEFAULT_WIRE_WIDTH_MILS );
95 m_lastResolvedLineStyle = PLOT_DASH_TYPE::SOLID;
96 m_lastResolvedColor = COLOR4D::UNSPECIFIED;
97 }
98
99
SCH_BUS_BUS_ENTRY(const wxPoint & pos,bool aFlipY)100 SCH_BUS_BUS_ENTRY::SCH_BUS_BUS_ENTRY( const wxPoint& pos, bool aFlipY ) :
101 SCH_BUS_ENTRY_BASE( SCH_BUS_BUS_ENTRY_T, pos, aFlipY )
102 {
103 m_layer = LAYER_BUS;
104 m_connected_bus_items[0] = nullptr;
105 m_connected_bus_items[1] = nullptr;
106
107 m_lastResolvedWidth = Mils2iu( DEFAULT_WIRE_WIDTH_MILS );
108 m_lastResolvedLineStyle = PLOT_DASH_TYPE::SOLID;
109 m_lastResolvedColor = COLOR4D::UNSPECIFIED;
110 }
111
112
Clone() const113 EDA_ITEM* SCH_BUS_WIRE_ENTRY::Clone() const
114 {
115 return new SCH_BUS_WIRE_ENTRY( *this );
116 }
117
118
Clone() const119 EDA_ITEM* SCH_BUS_BUS_ENTRY::Clone() const
120 {
121 return new SCH_BUS_BUS_ENTRY( *this );
122 }
123
124
doIsConnected(const wxPoint & aPosition) const125 bool SCH_BUS_ENTRY_BASE::doIsConnected( const wxPoint& aPosition ) const
126 {
127 return ( m_pos == aPosition || GetEnd() == aPosition );
128 }
129
130
GetEnd() const131 wxPoint SCH_BUS_ENTRY_BASE::GetEnd() const
132 {
133 return wxPoint( m_pos.x + m_size.x, m_pos.y + m_size.y );
134 }
135
136
SwapData(SCH_ITEM * aItem)137 void SCH_BUS_ENTRY_BASE::SwapData( SCH_ITEM* aItem )
138 {
139 SCH_BUS_ENTRY_BASE* item = dynamic_cast<SCH_BUS_ENTRY_BASE*>( aItem );
140 wxCHECK_RET( item, wxT( "Cannot swap bus entry data with invalid item." ) );
141
142 std::swap( m_pos, item->m_pos );
143 std::swap( m_size, item->m_size );
144 std::swap( m_stroke, item->m_stroke );
145
146 std::swap( m_lastResolvedWidth, item->m_lastResolvedWidth );
147 std::swap( m_lastResolvedLineStyle, item->m_lastResolvedLineStyle );
148 std::swap( m_lastResolvedColor, item->m_lastResolvedColor );
149 }
150
151
ViewGetLayers(int aLayers[],int & aCount) const152 void SCH_BUS_ENTRY_BASE::ViewGetLayers( int aLayers[], int& aCount ) const
153 {
154 aCount = 3;
155 aLayers[0] = LAYER_DANGLING;
156 aLayers[1] = Type() == SCH_BUS_BUS_ENTRY_T ? LAYER_BUS : LAYER_WIRE;
157 aLayers[2] = LAYER_SELECTION_SHADOWS;
158 }
159
160
GetBoundingBox() const161 const EDA_RECT SCH_BUS_ENTRY_BASE::GetBoundingBox() const
162 {
163 EDA_RECT box;
164
165 box.SetOrigin( m_pos );
166 box.SetEnd( GetEnd() );
167
168 box.Normalize();
169 box.Inflate( ( GetPenWidth() / 2 ) + 1 );
170
171 return box;
172 }
173
174
GetStrokeColor() const175 COLOR4D SCH_BUS_ENTRY_BASE::GetStrokeColor() const
176 {
177 if( m_stroke.GetColor() != COLOR4D::UNSPECIFIED )
178 {
179 m_lastResolvedColor = m_stroke.GetColor();
180 }
181 else if( IsConnectable() && !IsConnectivityDirty() )
182 {
183 NETCLASSPTR netclass = NetClass();
184
185 if( netclass )
186 m_lastResolvedColor = netclass->GetSchematicColor();
187 }
188
189 return m_lastResolvedColor;
190 }
191
192
GetStrokeStyle() const193 PLOT_DASH_TYPE SCH_BUS_ENTRY_BASE::GetStrokeStyle() const
194 {
195 if( m_stroke.GetPlotStyle() != PLOT_DASH_TYPE::DEFAULT )
196 {
197 m_lastResolvedLineStyle = m_stroke.GetPlotStyle();
198 }
199 else if( IsConnectable() && !IsConnectivityDirty() )
200 {
201 NETCLASSPTR netclass = NetClass();
202
203 if( netclass )
204 m_lastResolvedLineStyle = static_cast<PLOT_DASH_TYPE>( netclass->GetLineStyle() );
205 }
206
207 return m_lastResolvedLineStyle;
208 }
209
210
GetPenWidth() const211 int SCH_BUS_WIRE_ENTRY::GetPenWidth() const
212 {
213 if( m_stroke.GetWidth() > 0 )
214 {
215 m_lastResolvedWidth = m_stroke.GetWidth();
216 }
217 else if( IsConnectable() && !IsConnectivityDirty() )
218 {
219 NETCLASSPTR netclass = NetClass();
220
221 if( netclass )
222 m_lastResolvedWidth = netclass->GetWireWidth();
223 }
224
225 return m_lastResolvedWidth;
226 }
227
228
GetPenWidth() const229 int SCH_BUS_BUS_ENTRY::GetPenWidth() const
230 {
231 if( m_stroke.GetWidth() > 0 )
232 {
233 m_lastResolvedWidth = m_stroke.GetWidth();
234 }
235 else if( IsConnectable() && !IsConnectivityDirty() )
236 {
237 NETCLASSPTR netclass = NetClass();
238
239 if( netclass )
240 m_lastResolvedWidth = netclass->GetBusWidth();
241 }
242
243 return m_lastResolvedWidth;
244 }
245
246
GetEndPoints(std::vector<DANGLING_END_ITEM> & aItemList)247 void SCH_BUS_WIRE_ENTRY::GetEndPoints( std::vector< DANGLING_END_ITEM >& aItemList )
248 {
249 DANGLING_END_ITEM item( WIRE_ENTRY_END, this, m_pos );
250 aItemList.push_back( item );
251
252 DANGLING_END_ITEM item1( WIRE_ENTRY_END, this, GetEnd() );
253 aItemList.push_back( item1 );
254 }
255
256
GetEndPoints(std::vector<DANGLING_END_ITEM> & aItemList)257 void SCH_BUS_BUS_ENTRY::GetEndPoints( std::vector< DANGLING_END_ITEM >& aItemList )
258 {
259 DANGLING_END_ITEM item( BUS_ENTRY_END, this, m_pos );
260 aItemList.push_back( item );
261
262 DANGLING_END_ITEM item1( BUS_ENTRY_END, this, GetEnd() );
263 aItemList.push_back( item1 );
264 }
265
266
Print(const RENDER_SETTINGS * aSettings,const wxPoint & aOffset)267 void SCH_BUS_ENTRY_BASE::Print( const RENDER_SETTINGS* aSettings, const wxPoint& aOffset )
268 {
269 wxDC* DC = aSettings->GetPrintDC();
270 COLOR4D color = ( GetStrokeColor() == COLOR4D::UNSPECIFIED ) ?
271 aSettings->GetLayerColor( m_layer ) : GetStrokeColor();
272 wxPoint start = m_pos + aOffset;
273 wxPoint end = GetEnd() + aOffset;
274 int penWidth = ( GetPenWidth() == 0 ) ? aSettings->GetDefaultPenWidth() : GetPenWidth();
275
276 if( GetStrokeStyle() <= PLOT_DASH_TYPE::FIRST_TYPE )
277 {
278 GRLine( nullptr, DC, start.x, start.y, end.x, end.y, penWidth, color );
279 }
280 else
281 {
282 EDA_RECT clip( (wxPoint) start, wxSize( end.x - start.x, end.y - start.y ) );
283 clip.Normalize();
284
285 double theta = atan2( end.y - start.y, end.x - start.x );
286 double strokes[] = { 1.0, dash_gap_len( penWidth ), 1.0, dash_gap_len( penWidth ) };
287
288 switch( GetStrokeStyle() )
289 {
290 default:
291 case PLOT_DASH_TYPE::DASH:
292 strokes[0] = strokes[2] = dash_mark_len( penWidth );
293 break;
294 case PLOT_DASH_TYPE::DOT:
295 strokes[0] = strokes[2] = dot_mark_len( penWidth );
296 break;
297 case PLOT_DASH_TYPE::DASHDOT:
298 strokes[0] = dash_mark_len( penWidth );
299 strokes[2] = dot_mark_len( penWidth );
300 break;
301 }
302
303 for( size_t i = 0; i < 10000; ++i )
304 {
305 // Calculations MUST be done in doubles to keep from accumulating rounding
306 // errors as we go.
307 wxPoint next( start.x + strokes[ i % 4 ] * cos( theta ),
308 start.y + strokes[ i % 4 ] * sin( theta ) );
309
310 // Drawing each segment can be done rounded to ints.
311 wxPoint segStart( KiROUND( start.x ), KiROUND( start.y ) );
312 wxPoint segEnd( KiROUND( next.x ), KiROUND( next.y ) );
313
314 if( ClipLine( &clip, segStart.x, segStart.y, segEnd.x, segEnd.y ) )
315 break;
316 else if( i % 2 == 0 )
317 GRLine( nullptr, DC, segStart.x, segStart.y, segEnd.x, segEnd.y, penWidth, color );
318
319 start = next;
320 }
321 }
322 }
323
324
MirrorVertically(int aCenter)325 void SCH_BUS_ENTRY_BASE::MirrorVertically( int aCenter )
326 {
327 MIRROR( m_pos.y, aCenter );
328 m_size.y = -m_size.y;
329 }
330
331
MirrorHorizontally(int aCenter)332 void SCH_BUS_ENTRY_BASE::MirrorHorizontally( int aCenter )
333 {
334 MIRROR( m_pos.x, aCenter );
335 m_size.x = -m_size.x;
336 }
337
338
Rotate(const wxPoint & aCenter)339 void SCH_BUS_ENTRY_BASE::Rotate( const wxPoint& aCenter )
340 {
341 RotatePoint( &m_pos, aCenter, 900 );
342 RotatePoint( &m_size.x, &m_size.y, 900 );
343 }
344
345
UpdateDanglingState(std::vector<DANGLING_END_ITEM> & aItemList,const SCH_SHEET_PATH * aPath)346 bool SCH_BUS_WIRE_ENTRY::UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemList,
347 const SCH_SHEET_PATH* aPath )
348 {
349 bool previousStateStart = m_isDanglingStart;
350 bool previousStateEnd = m_isDanglingEnd;
351
352 m_isDanglingStart = m_isDanglingEnd = true;
353
354 // Store the connection type and state for the start (0) and end (1)
355 bool has_wire[2] = { false };
356 bool has_bus[2] = { false };
357
358 for( unsigned ii = 0; ii < aItemList.size(); ii++ )
359 {
360 DANGLING_END_ITEM& item = aItemList[ii];
361
362 if( item.GetItem() == this )
363 continue;
364
365 switch( item.GetType() )
366 {
367 case WIRE_END:
368 if( m_pos == item.GetPosition() )
369 has_wire[0] = true;
370 else if( GetEnd() == item.GetPosition() )
371 has_wire[1] = true;
372
373 break;
374
375 case BUS_END:
376 {
377 // The bus has created 2 DANGLING_END_ITEMs, one per end.
378 DANGLING_END_ITEM& nextItem = aItemList[++ii];
379
380 if( IsPointOnSegment( item.GetPosition(), nextItem.GetPosition(), m_pos ) )
381 has_bus[0] = true;
382 else if( IsPointOnSegment( item.GetPosition(), nextItem.GetPosition(), GetEnd() ) )
383 has_bus[1] = true;
384 }
385 break;
386
387 default:
388 break;
389 }
390 }
391
392 // A bus-wire entry is connected at both ends if it has a bus and a wire on its
393 // ends. Otherwise, we connect only one end (in the case of a wire-wire or bus-bus)
394 if( ( has_wire[0] && has_bus[1] ) || ( has_wire[1] && has_bus[0] ) )
395 m_isDanglingEnd = m_isDanglingStart = false;
396 else if( has_wire[0] || has_bus[0] )
397 m_isDanglingStart = false;
398 else if( has_wire[1] || has_bus[1] )
399 m_isDanglingEnd = false;
400
401 return (previousStateStart != m_isDanglingStart) || (previousStateEnd != m_isDanglingEnd);
402 }
403
404
UpdateDanglingState(std::vector<DANGLING_END_ITEM> & aItemList,const SCH_SHEET_PATH * aPath)405 bool SCH_BUS_BUS_ENTRY::UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemList,
406 const SCH_SHEET_PATH* aPath )
407 {
408 bool previousStateStart = m_isDanglingStart;
409 bool previousStateEnd = m_isDanglingEnd;
410
411 m_isDanglingStart = m_isDanglingEnd = true;
412
413 for( unsigned ii = 0; ii < aItemList.size(); ii++ )
414 {
415 DANGLING_END_ITEM& item = aItemList[ii];
416
417 if( item.GetItem() == this )
418 continue;
419
420 switch( item.GetType() )
421 {
422 case BUS_END:
423 {
424 // The bus has created 2 DANGLING_END_ITEMs, one per end.
425 DANGLING_END_ITEM& nextItem = aItemList[++ii];
426
427 if( IsPointOnSegment( item.GetPosition(), nextItem.GetPosition(), m_pos ) )
428 m_isDanglingStart = false;
429 if( IsPointOnSegment( item.GetPosition(), nextItem.GetPosition(), GetEnd() ) )
430 m_isDanglingEnd = false;
431 }
432 break;
433
434 default:
435 break;
436 }
437 }
438
439 return (previousStateStart != m_isDanglingStart) || (previousStateEnd != m_isDanglingEnd);
440 }
441
442
IsDangling() const443 bool SCH_BUS_ENTRY_BASE::IsDangling() const
444 {
445 return m_isDanglingStart || m_isDanglingEnd;
446 }
447
448
GetConnectionPoints() const449 std::vector<wxPoint> SCH_BUS_ENTRY_BASE::GetConnectionPoints() const
450 {
451 return { m_pos, GetEnd() };
452 }
453
454
GetSelectMenuText(EDA_UNITS aUnits) const455 wxString SCH_BUS_WIRE_ENTRY::GetSelectMenuText( EDA_UNITS aUnits ) const
456 {
457 return wxString( _( "Bus to Wire Entry" ) );
458 }
459
460
GetSelectMenuText(EDA_UNITS aUnits) const461 wxString SCH_BUS_BUS_ENTRY::GetSelectMenuText( EDA_UNITS aUnits ) const
462 {
463 return wxString( _( "Bus to Bus Entry" ) );
464 }
465
466
GetMenuImage() const467 BITMAPS SCH_BUS_WIRE_ENTRY::GetMenuImage() const
468 {
469 return BITMAPS::add_line2bus;
470 }
471
472
GetMenuImage() const473 BITMAPS SCH_BUS_BUS_ENTRY::GetMenuImage() const
474 {
475 return BITMAPS::add_bus2bus;
476 }
477
478
HitTest(const wxPoint & aPosition,int aAccuracy) const479 bool SCH_BUS_ENTRY_BASE::HitTest( const wxPoint& aPosition, int aAccuracy ) const
480 {
481 // Insure minimum accuracy
482 if( aAccuracy == 0 )
483 aAccuracy = ( GetPenWidth() / 2 ) + 4;
484
485 return TestSegmentHit( aPosition, m_pos, GetEnd(), aAccuracy );
486 }
487
488
HitTest(const EDA_RECT & aRect,bool aContained,int aAccuracy) const489 bool SCH_BUS_ENTRY_BASE::HitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const
490 {
491 EDA_RECT rect = aRect;
492
493 rect.Inflate( aAccuracy );
494
495 if( aContained )
496 return rect.Contains( GetBoundingBox() );
497
498 return rect.Intersects( GetBoundingBox() );
499 }
500
501
Plot(PLOTTER * aPlotter) const502 void SCH_BUS_ENTRY_BASE::Plot( PLOTTER* aPlotter ) const
503 {
504 auto* settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( aPlotter->RenderSettings() );
505
506 COLOR4D color = ( GetStrokeColor() == COLOR4D::UNSPECIFIED ) ?
507 settings->GetLayerColor( m_layer ) : GetStrokeColor();
508 int penWidth = ( GetPenWidth() == 0 ) ? settings->GetDefaultPenWidth() : GetPenWidth();
509
510 penWidth = std::max( penWidth, settings->GetMinPenWidth() );
511
512 aPlotter->SetCurrentLineWidth( penWidth );
513 aPlotter->SetColor( color );
514 aPlotter->SetDash( GetStrokeStyle() );
515 aPlotter->MoveTo( m_pos );
516 aPlotter->FinishTo( GetEnd() );
517 }
518
519
GetMsgPanelInfo(EDA_DRAW_FRAME * aFrame,std::vector<MSG_PANEL_ITEM> & aList)520 void SCH_BUS_ENTRY_BASE::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame,
521 std::vector<MSG_PANEL_ITEM>& aList )
522 {
523 wxString msg;
524
525 switch( GetLayer() )
526 {
527 default:
528 case LAYER_WIRE: msg = _( "Wire" ); break;
529 case LAYER_BUS: msg = _( "Bus" ); break;
530 }
531
532 aList.emplace_back( _( "Bus Entry Type" ), msg );
533
534 SCH_CONNECTION* conn = nullptr;
535
536 if( !IsConnectivityDirty() && dynamic_cast<SCH_EDIT_FRAME*>( aFrame ) )
537 conn = Connection();
538
539 if( conn )
540 {
541 conn->AppendInfoToMsgPanel( aList );
542
543 if( !conn->IsBus() )
544 {
545 NET_SETTINGS& netSettings = Schematic()->Prj().GetProjectFile().NetSettings();
546 wxString netname = conn->Name();
547 wxString netclassName = netSettings.m_NetClasses.GetDefaultPtr()->GetName();
548
549 if( netSettings.m_NetClassAssignments.count( netname ) )
550 netclassName = netSettings.m_NetClassAssignments[ netname ];
551
552 aList.emplace_back( _( "Assigned Netclass" ), netclassName );
553 }
554 }
555 }
556
557
operator <(const SCH_ITEM & aItem) const558 bool SCH_BUS_ENTRY_BASE::operator <( const SCH_ITEM& aItem ) const
559 {
560 if( Type() != aItem.Type() )
561 return Type() < aItem.Type();
562
563 auto symbol = static_cast<const SCH_BUS_ENTRY_BASE*>( &aItem );
564
565 if( GetLayer() != symbol->GetLayer() )
566 return GetLayer() < symbol->GetLayer();
567
568 if( GetPosition().x != symbol->GetPosition().x )
569 return GetPosition().x < symbol->GetPosition().x;
570
571 if( GetPosition().y != symbol->GetPosition().y )
572 return GetPosition().y < symbol->GetPosition().y;
573
574 if( GetEnd().x != symbol->GetEnd().x )
575 return GetEnd().x < symbol->GetEnd().x;
576
577 return GetEnd().y < symbol->GetEnd().y;
578 }
579
580
ConnectionPropagatesTo(const EDA_ITEM * aItem) const581 bool SCH_BUS_WIRE_ENTRY::ConnectionPropagatesTo( const EDA_ITEM* aItem ) const
582 {
583 // Don't generate connections between bus entries and buses, since there is
584 // a connectivity change at that point (e.g. A[7..0] to A7)
585 if( ( aItem->Type() == SCH_LINE_T ) &&
586 ( static_cast<const SCH_LINE*>( aItem )->GetLayer() == LAYER_BUS ) )
587 {
588 return false;
589 }
590
591 // Same for bus junctions
592 if( ( aItem->Type() == SCH_JUNCTION_T ) &&
593 ( static_cast<const SCH_JUNCTION*>( aItem )->GetLayer() == LAYER_BUS_JUNCTION ) )
594 {
595 return false;
596 }
597
598 // Don't generate connections between bus entries and bus labels that happen
599 // to land at the same point on the bus wire as this bus entry
600 if( ( aItem->Type() == SCH_LABEL_T ) &&
601 SCH_CONNECTION::IsBusLabel( static_cast<const SCH_LABEL*>( aItem )->GetText() ) )
602 {
603 return false;
604 }
605
606 // Don't generate connections between two bus-wire entries
607 if( aItem->Type() == SCH_BUS_WIRE_ENTRY_T )
608 return false;
609
610 return true;
611 }
612