/* * This program source code file is part of KiCad, a free EDA CAD application. * * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck * * Copyright (C) 1992-2012 KiCad Developers, see change_log.txt for contributors. * * First copyright (C) Randy Nevin, 1989 (see PCBCA package) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, you may find one here: * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * or you may search the http://www.gnu.org website for the version 2 license, * or you may write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ /* see "Autorouting With the A* Algorithm" (Dr.Dobbs journal) */ /** * @file solve.cpp */ #include #include #include #include #include #include #include #include #include #include #include #include #include static int Autoroute_One_Track( PCB_EDIT_FRAME* pcbframe, wxDC* DC, int two_sides, int row_source, int col_source, int row_target, int col_target, RATSNEST_ITEM* pt_rat ); static int Retrace( PCB_EDIT_FRAME* pcbframe, wxDC* DC, int, int, int, int, int, int net_code ); static void OrCell_Trace( BOARD* pcb, int col, int row, int side, int orient, int current_net_code ); static void AddNewTrace( PCB_EDIT_FRAME* pcbframe, wxDC* DC ); static int segm_oX, segm_oY; static int segm_fX, segm_fY; /* Origin and position of the current * trace segment. */ static RATSNEST_ITEM* pt_cur_ch; static int s_Clearance; // Clearance value used in autorouter static PICKED_ITEMS_LIST s_ItemsListPicker; int OpenNodes; /* total number of nodes opened */ int ClosNodes; /* total number of nodes closed */ int MoveNodes; /* total number of nodes moved */ int MaxNodes; /* maximum number of nodes opened at one time */ #define NOSUCCESS 0 #define STOP_FROM_ESC -1 #define ERR_MEMORY -2 #define SUCCESS 1 #define TRIVIAL_SUCCESS 2 /* ** visit neighboring cells like this (where [9] is on the other side): ** ** +---+---+---+ ** | 1 | 2 | 3 | ** +---+---+---+ ** | 4 |[9]| 5 | ** +---+---+---+ ** | 6 | 7 | 8 | ** +---+---+---+ */ /* for visiting neighbors on the same side: increments/decrements coord of * [] [0] = row [] (1] = col was added to the coord of the midpoint for * Get the coord of the 8 neighboring points. */ static const int delta[8][2] = { { 1, -1 }, /* northwest */ { 1, 0 }, /* north */ { 1, 1 }, /* northeast */ { 0, -1 }, /* west */ { 0, 1 }, /* east */ { -1, -1 }, /* southwest */ { -1, 0 }, /* south */ { -1, 1 } /* southeast */ }; static const int ndir[8] = { /* for building paths back to source */ FROM_SOUTHEAST, FROM_SOUTH, FROM_SOUTHWEST, FROM_EAST, FROM_WEST, FROM_NORTHEAST, FROM_NORTH, FROM_NORTHWEST }; /* blocking masks for neighboring cells */ #define BLOCK_NORTHEAST ( DIAG_NEtoSW | BENT_StoNE | BENT_WtoNE \ | ANGLE_NEtoSE | ANGLE_NWtoNE \ | SHARP_NtoNE | SHARP_EtoNE | HOLE ) #define BLOCK_SOUTHEAST ( DIAG_SEtoNW | BENT_NtoSE | BENT_WtoSE \ | ANGLE_NEtoSE | ANGLE_SEtoSW \ | SHARP_EtoSE | SHARP_StoSE | HOLE ) #define BLOCK_SOUTHWEST ( DIAG_NEtoSW | BENT_NtoSW | BENT_EtoSW \ | ANGLE_SEtoSW | ANGLE_SWtoNW \ | SHARP_StoSW | SHARP_WtoSW | HOLE ) #define BLOCK_NORTHWEST ( DIAG_SEtoNW | BENT_EtoNW | BENT_StoNW \ | ANGLE_SWtoNW | ANGLE_NWtoNE \ | SHARP_WtoNW | SHARP_NtoNW | HOLE ) #define BLOCK_NORTH ( LINE_VERTICAL | BENT_NtoSE | BENT_NtoSW \ | BENT_EtoNW | BENT_WtoNE \ | BENT_StoNE | BENT_StoNW \ | CORNER_NORTHEAST | CORNER_NORTHWEST \ | ANGLE_NEtoSE | ANGLE_SWtoNW | ANGLE_NWtoNE \ | DIAG_NEtoSW | DIAG_SEtoNW \ | SHARP_NtoNE | SHARP_NtoNW \ | SHARP_EtoNE | SHARP_WtoNW | HOLE ) #define BLOCK_EAST ( LINE_HORIZONTAL | BENT_EtoSW | BENT_EtoNW \ | BENT_NtoSE | BENT_StoNE \ | BENT_WtoNE | BENT_WtoSE \ | CORNER_NORTHEAST | CORNER_SOUTHEAST \ | ANGLE_NEtoSE | ANGLE_SEtoSW | ANGLE_NWtoNE \ | DIAG_NEtoSW | DIAG_SEtoNW \ | SHARP_EtoNE | SHARP_EtoSE \ | SHARP_NtoNE | SHARP_StoSE | HOLE ) #define BLOCK_SOUTH ( LINE_VERTICAL | BENT_StoNE | BENT_StoNW \ | BENT_EtoSW | BENT_WtoSE \ | BENT_NtoSE | BENT_NtoSW \ | CORNER_SOUTHEAST | CORNER_SOUTHWEST \ | ANGLE_NEtoSE | ANGLE_SWtoNW | ANGLE_SEtoSW \ | DIAG_NEtoSW | DIAG_SEtoNW \ | SHARP_StoSE | SHARP_StoSW \ | SHARP_EtoSE | SHARP_WtoSW | HOLE ) #define BLOCK_WEST ( LINE_HORIZONTAL | BENT_WtoNE | BENT_WtoSE \ | BENT_NtoSW | BENT_StoNW \ | BENT_EtoSW | BENT_EtoNW \ | CORNER_SOUTHWEST | CORNER_NORTHWEST \ | ANGLE_SWtoNW | ANGLE_SEtoSW | ANGLE_NWtoNE \ | DIAG_NEtoSW | DIAG_SEtoNW \ | SHARP_WtoSW | SHARP_WtoNW \ | SHARP_NtoNW | SHARP_StoSW | HOLE ) struct block { int r1, c1; long b1; int r2, c2; long b2; }; /* blocking masks for diagonal traces */ static struct block blocking[8] = { { 0, -1, BLOCK_NORTHEAST, 1, 0, BLOCK_SOUTHWEST }, { 0, 0, 0, 0, 0, 0 }, { 1, 0, BLOCK_SOUTHEAST, 0, 1, BLOCK_NORTHWEST }, { 0, 0, 0, 0, 0, 0 }, { 0, 0, 0, 0, 0, 0 }, { 0, -1, BLOCK_SOUTHEAST, -1, 0, BLOCK_NORTHWEST }, { 0, 0, 0, 0, 0, 0 }, { -1, 0, BLOCK_NORTHEAST, 0, 1, BLOCK_SOUTHWEST } }; /* mask for hole-related blocking effects */ static struct { long trace; int present; } selfok2[8] = { { HOLE_NORTHWEST, 0 }, { HOLE_NORTH, 0 }, { HOLE_NORTHEAST, 0 }, { HOLE_WEST, 0 }, { HOLE_EAST, 0 }, { HOLE_SOUTHWEST, 0 }, { HOLE_SOUTH, 0 }, { HOLE_SOUTHEAST, 0 } }; static long newmask[8] = { /* patterns to mask out in neighbor cells */ 0, CORNER_NORTHWEST | CORNER_NORTHEAST, 0, CORNER_NORTHWEST | CORNER_SOUTHWEST, CORNER_NORTHEAST | CORNER_SOUTHEAST, 0, CORNER_SOUTHWEST | CORNER_SOUTHEAST, 0 }; /* Route all traces * : * 1 if OK * -1 if escape (stop being routed) request * -2 if default memory allocation */ int PCB_EDIT_FRAME::Solve( wxDC* DC, int aLayersCount ) { int current_net_code; int row_source, col_source, row_target, col_target; int success, nbsucces = 0, nbunsucces = 0; NETINFO_ITEM* net; bool stop = false; wxString msg; int routedCount = 0; // routed ratsnest count bool two_sides = aLayersCount == 2; m_canvas->SetAbortRequest( false ); s_Clearance = GetBoard()->m_NetClasses.GetDefault()->GetClearance(); // Prepare the undo command info s_ItemsListPicker.ClearListAndDeleteItems(); // Should not be necessary, but... /* go until no more work to do */ GetWork( &row_source, &col_source, ¤t_net_code, &row_target, &col_target, &pt_cur_ch ); // First net to route. for( ; row_source != ILLEGAL; GetWork( &row_source, &col_source, ¤t_net_code, &row_target, &col_target, &pt_cur_ch ) ) { /* Test to stop routing ( escape key pressed ) */ wxYield(); if( m_canvas->GetAbortRequest() ) { if( IsOK( this, _( "Abort routing?" ) ) ) { success = STOP_FROM_ESC; stop = true; break; } else { m_canvas->SetAbortRequest( false ); } } EraseMsgBox(); routedCount++; net = GetBoard()->FindNet( current_net_code ); if( net ) { msg.Printf( wxT( "[%8.8s]" ), GetChars( net->GetNetname() ) ); AppendMsgPanel( wxT( "Net route" ), msg, BROWN ); msg.Printf( wxT( "%d / %d" ), routedCount, RoutingMatrix.m_RouteCount ); AppendMsgPanel( wxT( "Activity" ), msg, BROWN ); } segm_oX = GetBoard()->GetBoundingBox().GetX() + (RoutingMatrix.m_GridRouting * col_source); segm_oY = GetBoard()->GetBoundingBox().GetY() + (RoutingMatrix.m_GridRouting * row_source); segm_fX = GetBoard()->GetBoundingBox().GetX() + (RoutingMatrix.m_GridRouting * col_target); segm_fY = GetBoard()->GetBoundingBox().GetY() + (RoutingMatrix.m_GridRouting * row_target); /* Draw segment. */ GRLine( m_canvas->GetClipBox(), DC, segm_oX, segm_oY, segm_fX, segm_fY, 0, WHITE ); pt_cur_ch->m_PadStart->Draw( m_canvas, DC, GR_OR | GR_HIGHLIGHT ); pt_cur_ch->m_PadEnd->Draw( m_canvas, DC, GR_OR | GR_HIGHLIGHT ); success = Autoroute_One_Track( this, DC, two_sides, row_source, col_source, row_target, col_target, pt_cur_ch ); switch( success ) { case NOSUCCESS: pt_cur_ch->m_Status |= CH_UNROUTABLE; nbunsucces++; break; case STOP_FROM_ESC: stop = true; break; case ERR_MEMORY: stop = true; break; default: nbsucces++; break; } msg.Printf( wxT( "%d" ), nbsucces ); AppendMsgPanel( wxT( "OK" ), msg, GREEN ); msg.Printf( wxT( "%d" ), nbunsucces ); AppendMsgPanel( wxT( "Fail" ), msg, RED ); msg.Printf( wxT( " %d" ), GetBoard()->GetUnconnectedNetCount() ); AppendMsgPanel( wxT( "Not Connected" ), msg, CYAN ); /* Delete routing from display. */ pt_cur_ch->m_PadStart->Draw( m_canvas, DC, GR_AND ); pt_cur_ch->m_PadEnd->Draw( m_canvas, DC, GR_AND ); if( stop ) break; } SaveCopyInUndoList( s_ItemsListPicker, UR_UNSPECIFIED ); s_ItemsListPicker.ClearItemsList(); // s_ItemsListPicker is no more owner of picked items return SUCCESS; } /* Route a trace on the BOARD. * Parameters: * 1 side / 2 sides (0 / 1) * Coord source (row, col) * Coord destination (row, col) * Net_code * Pointer to the ratsnest reference * * Returns: * SUCCESS if routed * TRIVIAL_SUCCESS if pads are connected by overlay (no track needed) * If failure NOSUCCESS * Escape STOP_FROM_ESC if demand * ERR_MEMORY if memory allocation failed. */ static int Autoroute_One_Track( PCB_EDIT_FRAME* pcbframe, wxDC* DC, int two_sides, int row_source, int col_source, int row_target, int col_target, RATSNEST_ITEM* pt_rat ) { int r, c, side, d, apx_dist, nr, nc; int result, skip; int i; long curcell, newcell, buddy, lastopen, lastclos, lastmove; int newdist, olddir, _self; int current_net_code; int marge; int padLayerMaskStart; /* Mask layers belonging to the starting pad. */ int padLayerMaskEnd; /* Mask layers belonging to the ending pad. */ int topLayerMask = GetLayerMask( g_Route_Layer_TOP ); int bottomLayerMask = GetLayerMask( g_Route_Layer_BOTTOM ); int routeLayerMask; /* Mask two layers for routing. */ int tab_mask[2]; /* Enables the calculation of the mask layer being * tested. (side = TOP or BOTTOM) */ int start_mask_layer = 0; wxString msg; wxBusyCursor dummy_cursor; // Set an hourglass cursor while routing a // track result = NOSUCCESS; marge = s_Clearance + ( pcbframe->GetDesignSettings().GetCurrentTrackWidth() / 2 ); /* clear direction flags */ i = RoutingMatrix.m_Nrows * RoutingMatrix.m_Ncols * sizeof(DIR_CELL); if( two_sides ) memset( RoutingMatrix.m_DirSide[TOP], FROM_NOWHERE, i ); memset( RoutingMatrix.m_DirSide[BOTTOM], FROM_NOWHERE, i ); lastopen = lastclos = lastmove = 0; /* Set tab_masque[side] for final test of routing. */ if( two_sides ) tab_mask[TOP] = topLayerMask; tab_mask[BOTTOM] = bottomLayerMask; /* Set active layers mask. */ routeLayerMask = topLayerMask | bottomLayerMask; pt_cur_ch = pt_rat; current_net_code = pt_rat->GetNet(); padLayerMaskStart = pt_cur_ch->m_PadStart->GetLayerMask(); padLayerMaskEnd = pt_cur_ch->m_PadEnd->GetLayerMask(); /* First Test if routing possible ie if the pads are accessible * on the routing layers. */ if( ( routeLayerMask & padLayerMaskStart ) == 0 ) goto end_of_route; if( ( routeLayerMask & padLayerMaskEnd ) == 0 ) goto end_of_route; /* Then test if routing possible ie if the pads are accessible * On the routing grid (1 grid point must be in the pad) */ { int cX = ( RoutingMatrix.m_GridRouting * col_source ) + pcbframe->GetBoard()->GetBoundingBox().GetX(); int cY = ( RoutingMatrix.m_GridRouting * row_source ) + pcbframe->GetBoard()->GetBoundingBox().GetY(); int dx = pt_cur_ch->m_PadStart->GetSize().x / 2; int dy = pt_cur_ch->m_PadStart->GetSize().y / 2; int px = pt_cur_ch->m_PadStart->GetPosition().x; int py = pt_cur_ch->m_PadStart->GetPosition().y; if( ( ( int( pt_cur_ch->m_PadStart->GetOrientation() ) / 900 ) & 1 ) != 0 ) EXCHG( dx, dy ); if( ( abs( cX - px ) > dx ) || ( abs( cY - py ) > dy ) ) goto end_of_route; cX = ( RoutingMatrix.m_GridRouting * col_target ) + pcbframe->GetBoard()->GetBoundingBox().GetX(); cY = ( RoutingMatrix.m_GridRouting * row_target ) + pcbframe->GetBoard()->GetBoundingBox().GetY(); dx = pt_cur_ch->m_PadEnd->GetSize().x / 2; dy = pt_cur_ch->m_PadEnd->GetSize().y / 2; px = pt_cur_ch->m_PadEnd->GetPosition().x; py = pt_cur_ch->m_PadEnd->GetPosition().y; if( ( ( int( pt_cur_ch->m_PadEnd->GetOrientation() ) / 900) & 1 ) != 0 ) EXCHG( dx, dy ); if( ( abs( cX - px ) > dx ) || ( abs( cY - py ) > dy ) ) goto end_of_route; } /* Test the trivial case: direct connection overlay pads. */ if( ( row_source == row_target ) && ( col_source == col_target ) && ( padLayerMaskEnd & padLayerMaskStart & g_TabAllCopperLayerMask[pcbframe->GetBoard()->GetCopperLayerCount() - 1] ) ) { result = TRIVIAL_SUCCESS; goto end_of_route; } /* Placing the bit to remove obstacles on 2 pads to a link. */ pcbframe->SetStatusText( wxT( "Gen Cells" ) ); PlacePad( pt_cur_ch->m_PadStart, CURRENT_PAD, marge, WRITE_OR_CELL ); PlacePad( pt_cur_ch->m_PadEnd, CURRENT_PAD, marge, WRITE_OR_CELL ); /* Regenerates the remaining barriers (which may encroach on the placement bits precedent) */ i = pcbframe->GetBoard()->GetPadCount(); for( unsigned ii = 0; ii < pcbframe->GetBoard()->GetPadCount(); ii++ ) { D_PAD* ptr = pcbframe->GetBoard()->GetPad( ii ); if( ( pt_cur_ch->m_PadStart != ptr ) && ( pt_cur_ch->m_PadEnd != ptr ) ) { PlacePad( ptr, ~CURRENT_PAD, marge, WRITE_AND_CELL ); } } InitQueue(); /* initialize the search queue */ apx_dist = RoutingMatrix.GetApxDist( row_source, col_source, row_target, col_target ); /* Initialize first search. */ if( two_sides ) /* Preferred orientation. */ { if( abs( row_target - row_source ) > abs( col_target - col_source ) ) { if( padLayerMaskStart & topLayerMask ) { start_mask_layer = 2; if( SetQueue( row_source, col_source, TOP, 0, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } if( padLayerMaskStart & bottomLayerMask ) { start_mask_layer |= 1; if( SetQueue( row_source, col_source, BOTTOM, 0, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } } else { if( padLayerMaskStart & bottomLayerMask ) { start_mask_layer = 1; if( SetQueue( row_source, col_source, BOTTOM, 0, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } if( padLayerMaskStart & topLayerMask ) { start_mask_layer |= 2; if( SetQueue( row_source, col_source, TOP, 0, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } } } else if( padLayerMaskStart & bottomLayerMask ) { start_mask_layer = 1; if( SetQueue( row_source, col_source, BOTTOM, 0, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } /* search until success or we exhaust all possibilities */ GetQueue( &r, &c, &side, &d, &apx_dist ); for( ; r != ILLEGAL; GetQueue( &r, &c, &side, &d, &apx_dist ) ) { curcell = RoutingMatrix.GetCell( r, c, side ); if( curcell & CURRENT_PAD ) curcell &= ~HOLE; if( (r == row_target) && (c == col_target) /* success if layer OK */ && ( tab_mask[side] & padLayerMaskEnd) ) { /* Remove link. */ GRSetDrawMode( DC, GR_XOR ); GRLine( pcbframe->GetCanvas()->GetClipBox(), DC, segm_oX, segm_oY, segm_fX, segm_fY, 0, WHITE ); /* Generate trace. */ if( Retrace( pcbframe, DC, row_source, col_source, row_target, col_target, side, current_net_code ) ) { result = SUCCESS; /* Success : Route OK */ } break; /* Routing complete. */ } if( pcbframe->GetCanvas()->GetAbortRequest() ) { result = STOP_FROM_ESC; break; } /* report every COUNT new nodes or so */ #define COUNT 20000 if( ( OpenNodes - lastopen > COUNT ) || ( ClosNodes - lastclos > COUNT ) || ( MoveNodes - lastmove > COUNT ) ) { lastopen = OpenNodes; lastclos = ClosNodes; lastmove = MoveNodes; msg.Printf( wxT( "Activity: Open %d Closed %d Moved %d" ), OpenNodes, ClosNodes, MoveNodes ); pcbframe->SetStatusText( msg ); } _self = 0; if( curcell & HOLE ) { _self = 5; /* set 'present' bits */ for( i = 0; i < 8; i++ ) { selfok2[i].present = 0; if( curcell & selfok2[i].trace ) selfok2[i].present = 1; } } for( i = 0; i < 8; i++ ) /* consider neighbors */ { nr = r + delta[i][0]; nc = c + delta[i][1]; /* off the edge? */ if( nr < 0 || nr >= RoutingMatrix.m_Nrows || nc < 0 || nc >= RoutingMatrix.m_Ncols ) continue; /* off the edge */ if( _self == 5 && selfok2[i].present ) continue; newcell = RoutingMatrix.GetCell( nr, nc, side ); if( newcell & CURRENT_PAD ) newcell &= ~HOLE; /* check for non-target hole */ if( newcell & HOLE ) { if( nr != row_target || nc != col_target ) continue; } /* check for traces */ else if( newcell & HOLE & ~(newmask[i]) ) { continue; } /* check blocking on corner neighbors */ if( delta[i][0] && delta[i][1] ) { /* check first buddy */ buddy = RoutingMatrix.GetCell( r + blocking[i].r1, c + blocking[i].c1, side ); if( buddy & CURRENT_PAD ) buddy &= ~HOLE; if( buddy & HOLE ) continue; // if (buddy & (blocking[i].b1)) continue; /* check second buddy */ buddy = RoutingMatrix.GetCell( r + blocking[i].r2, c + blocking[i].c2, side ); if( buddy & CURRENT_PAD ) buddy &= ~HOLE; if( buddy & HOLE ) continue; // if (buddy & (blocking[i].b2)) continue; } olddir = RoutingMatrix.GetDir( r, c, side ); newdist = d + RoutingMatrix.CalcDist( ndir[i], olddir, ( olddir == FROM_OTHERSIDE ) ? RoutingMatrix.GetDir( r, c, 1 - side ) : 0, side ); /* if (a) not visited yet, or (b) we have */ /* found a better path, add it to queue */ if( !RoutingMatrix.GetDir( nr, nc, side ) ) { RoutingMatrix.SetDir( nr, nc, side, ndir[i] ); RoutingMatrix.SetDist( nr, nc, side, newdist ); if( SetQueue( nr, nc, side, newdist, RoutingMatrix.GetApxDist( nr, nc, row_target, col_target ), row_target, col_target ) == 0 ) { return ERR_MEMORY; } } else if( newdist < RoutingMatrix.GetDist( nr, nc, side ) ) { RoutingMatrix.SetDir( nr, nc, side, ndir[i] ); RoutingMatrix.SetDist( nr, nc, side, newdist ); ReSetQueue( nr, nc, side, newdist, RoutingMatrix.GetApxDist( nr, nc, row_target, col_target ), row_target, col_target ); } } /** Test the other layer. **/ if( two_sides ) { olddir = RoutingMatrix.GetDir( r, c, side ); if( olddir == FROM_OTHERSIDE ) continue; /* useless move, so don't bother */ if( curcell ) /* can't drill via if anything here */ continue; /* check for holes or traces on other side */ if( ( newcell = RoutingMatrix.GetCell( r, c, 1 - side ) ) != 0 ) continue; /* check for nearby holes or traces on both sides */ for( skip = 0, i = 0; i < 8; i++ ) { nr = r + delta[i][0]; nc = c + delta[i][1]; if( nr < 0 || nr >= RoutingMatrix.m_Nrows || nc < 0 || nc >= RoutingMatrix.m_Ncols ) continue; /* off the edge !! */ if( RoutingMatrix.GetCell( nr, nc, side ) /* & blocking2[i]*/ ) { skip = 1; /* can't drill via here */ break; } if( RoutingMatrix.GetCell( nr, nc, 1 - side ) /* & blocking2[i]*/ ) { skip = 1; /* can't drill via here */ break; } } if( skip ) /* neighboring hole or trace? */ continue; /* yes, can't drill via here */ newdist = d + RoutingMatrix.CalcDist( FROM_OTHERSIDE, olddir, 0, side ); /* if (a) not visited yet, * or (b) we have found a better path, * add it to queue */ if( !RoutingMatrix.GetDir( r, c, 1 - side ) ) { RoutingMatrix.SetDir( r, c, 1 - side, FROM_OTHERSIDE ); RoutingMatrix.SetDist( r, c, 1 - side, newdist ); if( SetQueue( r, c, 1 - side, newdist, apx_dist, row_target, col_target ) == 0 ) { return ERR_MEMORY; } } else if( newdist < RoutingMatrix.GetDist( r, c, 1 - side ) ) { RoutingMatrix.SetDir( r, c, 1 - side, FROM_OTHERSIDE ); RoutingMatrix.SetDist( r, c, 1 - side, newdist ); ReSetQueue( r, c, 1 - side, newdist, apx_dist, row_target, col_target ); } } /* Finished attempt to route on other layer. */ } end_of_route: PlacePad( pt_cur_ch->m_PadStart, ~CURRENT_PAD, marge, WRITE_AND_CELL ); PlacePad( pt_cur_ch->m_PadEnd, ~CURRENT_PAD, marge, WRITE_AND_CELL ); msg.Printf( wxT( "Activity: Open %d Closed %d Moved %d"), OpenNodes, ClosNodes, MoveNodes ); pcbframe->SetStatusText( msg ); return result; } static long bit[8][9] = { /* OT=Otherside */ /* N, NE, E, SE, S, SW, W, NW, OT */ /* N */ { LINE_VERTICAL, BENT_StoNE, CORNER_SOUTHEAST, SHARP_StoSE, 0, SHARP_StoSW, CORNER_SOUTHWEST, BENT_StoNW, ( HOLE | HOLE_SOUTH ) }, /* NE */ { BENT_NtoSW, DIAG_NEtoSW, BENT_EtoSW, ANGLE_SEtoSW, SHARP_StoSW, 0, SHARP_WtoSW, ANGLE_SWtoNW, ( HOLE | HOLE_SOUTHWEST ) }, /* E */ { CORNER_NORTHWEST, BENT_WtoNE, LINE_HORIZONTAL, BENT_WtoSE, CORNER_SOUTHWEST, SHARP_WtoSW, 0, SHARP_WtoNW, ( HOLE | HOLE_WEST ) }, /* SE */ { SHARP_NtoNW, ANGLE_NWtoNE, BENT_EtoNW, DIAG_SEtoNW, BENT_StoNW, ANGLE_SWtoNW, SHARP_WtoNW, 0, ( HOLE | HOLE_NORTHWEST ) }, /* S */ { 0, SHARP_NtoNE, CORNER_NORTHEAST, BENT_NtoSE, LINE_VERTICAL, BENT_NtoSW, CORNER_NORTHWEST, SHARP_NtoNW, ( HOLE | HOLE_NORTH ) }, /* SW */ { SHARP_NtoNE, 0, SHARP_EtoNE, ANGLE_NEtoSE, BENT_StoNE, DIAG_NEtoSW, BENT_WtoNE, ANGLE_NWtoNE, ( HOLE | HOLE_NORTHEAST ) }, /* W */ { CORNER_NORTHEAST, SHARP_EtoNE, 0, SHARP_EtoSE, CORNER_SOUTHEAST, BENT_EtoSW, LINE_HORIZONTAL, BENT_EtoNW, ( HOLE | HOLE_EAST ) }, /* NW */ { BENT_NtoSE, ANGLE_NEtoSE, SHARP_EtoSE, 0, SHARP_StoSE, ANGLE_SEtoSW, BENT_WtoSE, DIAG_SEtoNW, ( HOLE | HOLE_SOUTHEAST ) } }; /* work from target back to source, actually laying the traces * Parameters: * start on side target_side, of coordinates row_target, col_target. * arrive on side masque_layer_start, coordinate row_source, col_source * The search is done in reverse routing, the point of arrival (target) to * the starting point (source) * The router. * * Target_side = symbol (TOP / BOTTOM) of departure * = Mask_layer_source mask layers Arrival * * Returns: * 0 if error * > 0 if Ok */ static int Retrace( PCB_EDIT_FRAME* pcbframe, wxDC* DC, int row_source, int col_source, int row_target, int col_target, int target_side, int current_net_code ) { int r0, c0, s0; int r1, c1, s1; /* row, col, starting side. */ int r2, c2, s2; /* row, col, ending side. */ int x, y = -1; long b; r1 = row_target; c1 = col_target; /* start point is target ( end point is source )*/ s1 = target_side; r0 = c0 = s0 = ILLEGAL; wxASSERT( g_CurrentTrackList.GetCount() == 0 ); do { /* find where we came from to get here */ r2 = r1; c2 = c1; s2 = s1; x = RoutingMatrix.GetDir( r1, c1, s1 ); switch( x ) { case FROM_NORTH: r2++; break; case FROM_EAST: c2++; break; case FROM_SOUTH: r2--; break; case FROM_WEST: c2--; break; case FROM_NORTHEAST: r2++; c2++; break; case FROM_SOUTHEAST: r2--; c2++; break; case FROM_SOUTHWEST: r2--; c2--; break; case FROM_NORTHWEST: r2++; c2--; break; case FROM_OTHERSIDE: s2 = 1 - s2; break; default: wxMessageBox( wxT( "Retrace: internal error: no way back" ) ); return 0; } if( r0 != ILLEGAL ) y = RoutingMatrix.GetDir( r0, c0, s0 ); /* see if target or hole */ if( ( ( r1 == row_target ) && ( c1 == col_target ) ) || ( s1 != s0 ) ) { int p_dir; switch( x ) { case FROM_NORTH: p_dir = HOLE_NORTH; break; case FROM_EAST: p_dir = HOLE_EAST; break; case FROM_SOUTH: p_dir = HOLE_SOUTH; break; case FROM_WEST: p_dir = HOLE_WEST; break; case FROM_NORTHEAST: p_dir = HOLE_NORTHEAST; break; case FROM_SOUTHEAST: p_dir = HOLE_SOUTHEAST; break; case FROM_SOUTHWEST: p_dir = HOLE_SOUTHWEST; break; case FROM_NORTHWEST: p_dir = HOLE_NORTHWEST; break; case FROM_OTHERSIDE: default: DisplayError( pcbframe, wxT( "Retrace: error 1" ) ); return 0; } OrCell_Trace( pcbframe->GetBoard(), r1, c1, s1, p_dir, current_net_code ); } else { if( ( y == FROM_NORTH || y == FROM_NORTHEAST || y == FROM_EAST || y == FROM_SOUTHEAST || y == FROM_SOUTH || y == FROM_SOUTHWEST || y == FROM_WEST || y == FROM_NORTHWEST ) && ( x == FROM_NORTH || x == FROM_NORTHEAST || x == FROM_EAST || x == FROM_SOUTHEAST || x == FROM_SOUTH || x == FROM_SOUTHWEST || x == FROM_WEST || x == FROM_NORTHWEST || x == FROM_OTHERSIDE ) && ( ( b = bit[y - 1][x - 1] ) != 0 ) ) { OrCell_Trace( pcbframe->GetBoard(), r1, c1, s1, b, current_net_code ); if( b & HOLE ) OrCell_Trace( pcbframe->GetBoard(), r2, c2, s2, HOLE, current_net_code ); } else { wxMessageBox( wxT( "Retrace: error 2" ) ); return 0; } } if( ( r2 == row_source ) && ( c2 == col_source ) ) /* see if source */ { int p_dir; switch( x ) { case FROM_NORTH: p_dir = HOLE_SOUTH; break; case FROM_EAST: p_dir = HOLE_WEST; break; case FROM_SOUTH: p_dir = HOLE_NORTH; break; case FROM_WEST: p_dir = HOLE_EAST; break; case FROM_NORTHEAST: p_dir = HOLE_SOUTHWEST; break; case FROM_SOUTHEAST: p_dir = HOLE_NORTHWEST; break; case FROM_SOUTHWEST: p_dir = HOLE_NORTHEAST; break; case FROM_NORTHWEST: p_dir = HOLE_SOUTHEAST; break; case FROM_OTHERSIDE: default: wxMessageBox( wxT( "Retrace: error 3" ) ); return 0; } OrCell_Trace( pcbframe->GetBoard(), r2, c2, s2, p_dir, current_net_code ); } /* move to next cell */ r0 = r1; c0 = c1; s0 = s1; r1 = r2; c1 = c2; s1 = s2; } while( !( ( r2 == row_source ) && ( c2 == col_source ) ) ); AddNewTrace( pcbframe, DC ); return 1; } /* This function is used by Retrace and read the autorouting matrix data cells to create * the real track on the physical board */ static void OrCell_Trace( BOARD* pcb, int col, int row, int side, int orient, int current_net_code ) { if( orient == HOLE ) // placement of a via { VIA *newVia = new VIA( pcb ); g_CurrentTrackList.PushBack( newVia ); g_CurrentTrackSegment->SetState( TRACK_AR, true ); g_CurrentTrackSegment->SetLayer( 0x0F ); g_CurrentTrackSegment->SetStart(wxPoint( pcb->GetBoundingBox().GetX() + ( RoutingMatrix.m_GridRouting * row ), pcb->GetBoundingBox().GetY() + ( RoutingMatrix.m_GridRouting * col ))); g_CurrentTrackSegment->SetEnd( g_CurrentTrackSegment->GetStart() ); g_CurrentTrackSegment->SetWidth( pcb->GetDesignSettings().GetCurrentViaSize() ); newVia->SetViaType( pcb->GetDesignSettings().m_CurrentViaType ); g_CurrentTrackSegment->SetNetCode( current_net_code ); } else // placement of a standard segment { TRACK *newTrack = new TRACK( pcb ); int dx0, dy0, dx1, dy1; g_CurrentTrackList.PushBack( newTrack ); g_CurrentTrackSegment->SetLayer( g_Route_Layer_BOTTOM ); if( side == TOP ) g_CurrentTrackSegment->SetLayer( g_Route_Layer_TOP ); g_CurrentTrackSegment->SetState( TRACK_AR, true ); g_CurrentTrackSegment->SetEnd( wxPoint( pcb->GetBoundingBox().GetX() + ( RoutingMatrix.m_GridRouting * row ), pcb->GetBoundingBox().GetY() + ( RoutingMatrix.m_GridRouting * col ))); g_CurrentTrackSegment->SetNetCode( current_net_code ); if( g_CurrentTrackSegment->Back() == NULL ) /* Start trace. */ { g_CurrentTrackSegment->SetStart( wxPoint( segm_fX, segm_fY ) ); /* Placement on the center of the pad if outside grid. */ dx1 = g_CurrentTrackSegment->GetEnd().x - g_CurrentTrackSegment->GetStart().x; dy1 = g_CurrentTrackSegment->GetEnd().y - g_CurrentTrackSegment->GetStart().y; dx0 = pt_cur_ch->m_PadEnd->GetPosition().x - g_CurrentTrackSegment->GetStart().x; dy0 = pt_cur_ch->m_PadEnd->GetPosition().y - g_CurrentTrackSegment->GetStart().y; /* If aligned, change the origin point. */ if( abs( dx0 * dy1 ) == abs( dx1 * dy0 ) ) { g_CurrentTrackSegment->SetStart( pt_cur_ch->m_PadEnd->GetPosition() ); } else // Creation of a supplemental segment { g_CurrentTrackSegment->SetStart( pt_cur_ch->m_PadEnd->GetPosition() ); newTrack = (TRACK*)g_CurrentTrackSegment->Clone(); newTrack->SetStart( g_CurrentTrackSegment->GetEnd()); g_CurrentTrackList.PushBack( newTrack ); } } else { if( g_CurrentTrackSegment->Back() ) { g_CurrentTrackSegment->SetStart( g_CurrentTrackSegment->Back()->GetEnd() ); } } g_CurrentTrackSegment->SetWidth( pcb->GetDesignSettings().GetCurrentTrackWidth() ); if( g_CurrentTrackSegment->GetStart() != g_CurrentTrackSegment->GetEnd() ) { /* Reduce aligned segments by one. */ TRACK* oldTrack = g_CurrentTrackSegment->Back(); if( oldTrack && oldTrack->Type() != PCB_VIA_T ) { dx1 = g_CurrentTrackSegment->GetEnd().x - g_CurrentTrackSegment->GetStart().x; dy1 = g_CurrentTrackSegment->GetEnd().y - g_CurrentTrackSegment->GetStart().y; dx0 = oldTrack->GetEnd().x - oldTrack->GetStart().x; dy0 = oldTrack->GetEnd().y - oldTrack->GetStart().y; if( abs( dx0 * dy1 ) == abs( dx1 * dy0 ) ) { oldTrack->SetEnd( g_CurrentTrackSegment->GetEnd() ); delete g_CurrentTrackList.PopBack(); } } } } } /* Insert the new track created in the list of tracks. * amend the points of beginning and end of the track so that they are * connected * Center on pads even if they are off grid. */ static void AddNewTrace( PCB_EDIT_FRAME* pcbframe, wxDC* DC ) { if( g_FirstTrackSegment == NULL ) return; int dx0, dy0, dx1, dy1; int marge, via_marge; EDA_DRAW_PANEL* panel = pcbframe->GetCanvas(); PCB_SCREEN* screen = pcbframe->GetScreen(); marge = s_Clearance + ( pcbframe->GetDesignSettings().GetCurrentTrackWidth() / 2 ); via_marge = s_Clearance + ( pcbframe->GetDesignSettings().GetCurrentViaSize() / 2 ); dx1 = g_CurrentTrackSegment->GetEnd().x - g_CurrentTrackSegment->GetStart().x; dy1 = g_CurrentTrackSegment->GetEnd().y - g_CurrentTrackSegment->GetStart().y; /* Place on center of pad if off grid. */ dx0 = pt_cur_ch->m_PadStart->GetPosition().x - g_CurrentTrackSegment->GetStart().x; dy0 = pt_cur_ch->m_PadStart->GetPosition().y - g_CurrentTrackSegment->GetStart().y; /* If aligned, change the origin point. */ if( abs( dx0 * dy1 ) == abs( dx1 * dy0 ) ) { g_CurrentTrackSegment->SetEnd( pt_cur_ch->m_PadStart->GetPosition() ); } else { TRACK* newTrack = (TRACK*)g_CurrentTrackSegment->Clone(); newTrack->SetEnd( pt_cur_ch->m_PadStart->GetPosition() ); newTrack->SetStart( g_CurrentTrackSegment->GetEnd() ); g_CurrentTrackList.PushBack( newTrack ); } g_FirstTrackSegment->start = pcbframe->GetBoard()->GetPad( g_FirstTrackSegment, ENDPOINT_START ); if( g_FirstTrackSegment->start ) g_FirstTrackSegment->SetState( BEGIN_ONPAD, true ); g_CurrentTrackSegment->end = pcbframe->GetBoard()->GetPad( g_CurrentTrackSegment, ENDPOINT_END ); if( g_CurrentTrackSegment->end ) g_CurrentTrackSegment->SetState( END_ONPAD, true ); /* Out the new track on the matrix board */ for( TRACK* track = g_FirstTrackSegment; track; track = track->Next() ) { TraceSegmentPcb( track, HOLE, marge, WRITE_CELL ); TraceSegmentPcb( track, VIA_IMPOSSIBLE, via_marge, WRITE_OR_CELL ); } // Insert new segments in real board int netcode = g_FirstTrackSegment->GetNetCode(); TRACK* firstTrack = g_FirstTrackSegment; int newCount = g_CurrentTrackList.GetCount(); // Put entire new current segment list in BOARD TRACK* track; TRACK* insertBeforeMe = g_CurrentTrackSegment->GetBestInsertPoint( pcbframe->GetBoard() ); while( ( track = g_CurrentTrackList.PopFront() ) != NULL ) { ITEM_PICKER picker( track, UR_NEW ); s_ItemsListPicker.PushItem( picker ); pcbframe->GetBoard()->m_Track.Insert( track, insertBeforeMe ); } DrawTraces( panel, DC, firstTrack, newCount, GR_OR ); pcbframe->TestNetConnection( DC, netcode ); screen->SetModify(); }