move_copy_track.cpp.notused 21.4 KB
Newer Older
1 2 3 4
/****************************************************/
/* 				Edition des pistes					*/
/* Routines de duplication et deplacement de pistes */
/****************************************************/
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

#include "fctsys.h"
#include "gr_basic.h"

#include "common.h"
#include "pcbnew.h"
#include "autorout.h"

#include "drag.h"

#include "protos.h"


/* Routines externes */

20 21
static void Show_MoveTrack( WinEDA_DrawPanel* panel, wxDC* DC, bool erase );
static void Exit_MoveTrack( WinEDA_DrawPanel* Panel, wxDC* DC );
22 23 24

#if 0
/* Routines Locales */
25 26 27
static void Duplic_Track( COMMAND* Cmd );
static void Place_Dupl_Route( COMMAND* Cmd );

28 29 30 31
#endif

/* variables locales */
static wxPoint PosInit, LastPos;
32 33 34 35
static TRACK*  NewTrack;    /* Nouvelle piste creee ou piste deplacee */
static int     NbPtNewTrack;
static int     Old_HightLigth_NetCode;
static bool    Old_HightLigt_Status;
36 37 38


/**************************************************************/
39
static void Exit_MoveTrack( WinEDA_DrawPanel* Panel, wxDC* DC )
40
/***************************************************************/
41

42
/* routine d'annulation de la commande drag, copy ou move track  si une piste est en cours
43 44
 *  de tracage, ou de sortie de l'application EDITRACK.
 *  Appel par la touche ESC
45 46
 */
{
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
    TRACK* NextS;
    int    ii;


    /* Effacement du trace en cours */
    wxPoint             oldpos = Panel->GetScreen()->m_Curseur;

    Panel->GetScreen()->m_Curseur = PosInit;
    Panel->ManageCurseur( Panel, DC, TRUE );
    Panel->GetScreen()->m_Curseur = oldpos;
    g_HightLigt_Status = FALSE;
    ( (WinEDA_PcbFrame*) Panel->m_Parent )->DrawHightLight( DC, g_HightLigth_NetCode );

    if( NewTrack )
    {
        if( NewTrack->m_Flags & IS_NEW )
        {
            for( ii = 0; ii < NbPtNewTrack; ii++, NewTrack = NextS )
            {
                if( NewTrack == NULL )
                    break;
                NextS = (TRACK*) NewTrack->Pnext;
                delete NewTrack;
            }
        }
        else    /* Move : remise en ancienne position */
        {
            TRACK* Track = NewTrack;
            int    dx    = LastPos.x - PosInit.x;
            int    dy    = LastPos.y - PosInit.y;
            for( ii = 0; ii < NbPtNewTrack; ii++, Track = (TRACK*) Track->Pnext )
            {
                if( Track == NULL )
                    break;
                Track->m_Start.x -= dx;
                Track->m_Start.y -= dy;
                Track->m_End.x   -= dx;
                Track->m_End.y   -= dy;
                Track->m_Flags    = 0;
            }

            Trace_Une_Piste( Panel, DC, NewTrack, NbPtNewTrack, GR_OR );
        }
90

91 92 93 94 95
        NewTrack = NULL;
    }

    Panel->ManageCurseur = NULL;
    Panel->ForceCloseManageCurseur = NULL;
96 97
    Panel->SetCurItem( NULL );
//    Panel->m_Parent->EraseMsgBox();  SeCurItem() does this
98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116

    /* Annulation deplacement et Redessin des segments dragges */
    DRAG_SEGM* pt_drag = g_DragSegmentList;
    for( ; pt_drag != NULL; pt_drag = pt_drag->Pnext )
    {
        TRACK* Track = pt_drag->m_Segm;
        pt_drag->SetInitialValues();
        Track->SetState( EDIT, OFF );
        Track->m_Flags = 0;
        Track->Draw( Panel, DC, GR_OR );
    }

    g_HightLigth_NetCode = Old_HightLigth_NetCode;
    g_HightLigt_Status   = Old_HightLigt_Status;
    if( g_HightLigt_Status )
        ( (WinEDA_PcbFrame*) Panel->m_Parent )->DrawHightLight( DC, g_HightLigth_NetCode );

    EraseDragListe();
}
117 118 119


/*************************************************************************/
120
static void Show_MoveTrack( WinEDA_DrawPanel* panel, wxDC* DC, bool erase )
121 122 123
/*************************************************************************/
/* redessin du contour de la piste lors des deplacements de la souris */
{
124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
    int          ii, dx, dy;
    TRACK*       Track;
    BASE_SCREEN* screen = panel->GetScreen();
    int          track_fill_copy = DisplayOpt.DisplayPcbTrackFill;

    DisplayOpt.DisplayPcbTrackFill = SKETCH;

    erase = TRUE;

    /* efface ancienne position si elle a ete deja dessinee */
    if( erase )
    {
        if( NewTrack )
            Trace_Une_Piste( panel, DC, NewTrack, NbPtNewTrack, GR_XOR );
    }

    /* mise a jour des coordonnees des segments de la piste */
    wxPoint Pos = screen->m_Curseur;
    dx      = Pos.x - LastPos.x;
    dy      = Pos.y - LastPos.y;
    LastPos = Pos;
    ii = NbPtNewTrack, Track = NewTrack;
    for( ; ii > 0; ii--, Track = Track->Next() )
    {
        if( Track->m_Flags & STARTPOINT )
        {
            Track->m_Start.x += dx; Track->m_Start.y += dy;
        }
        if( Track->m_Flags & ENDPOINT )
        {
            Track->m_End.x += dx; Track->m_End.y += dy;
        }
    }

    /* dessin de la nouvelle piste */
    Trace_Une_Piste( panel, DC, NewTrack, NbPtNewTrack, GR_XOR );

    /* Tracage des segments dragges */
    DRAG_SEGM* pt_drag = g_DragSegmentList;
    for( ; pt_drag != NULL; pt_drag = pt_drag->Pnext )
    {
        Track = pt_drag->m_Segm;
        if( erase )
            Track->Draw( panel, DC, GR_XOR );
        if( Track->m_Flags & STARTPOINT )
        {
            Track->m_Start.x += dx; Track->m_Start.y += dy;
        }
        if( Track->m_Flags & ENDPOINT )
        {
            Track->m_End.x += dx; Track->m_End.y += dy;
        }
        Track->Draw( panel, DC, GR_XOR );
    }
178

179 180
    DisplayOpt.DisplayPcbTrackFill = track_fill_copy;
}
181 182 183


/***********************************************************************************/
184
void WinEDA_PcbFrame::Start_MoveOneTrackSegment( TRACK* track, wxDC* DC, bool Drag )
185 186
/***********************************************************************************/
{
187 188 189 190 191 192
    /* Change hight light net: the new one will be hightlighted */
    Old_HightLigt_Status   = g_HightLigt_Status;
    Old_HightLigth_NetCode = g_HightLigth_NetCode;
    if( g_HightLigt_Status )
        Hight_Light( DC );

193
    if( Drag && track->Type() == TYPEVIA )
194 195 196
    {
        track->m_Flags = IS_DRAGGED | STARTPOINT | ENDPOINT;
        Collect_TrackSegmentsToDrag( DrawPanel, DC, track->m_Start,
197
                                     track->ReturnMaskLayer(), track->GetNet() );
198 199 200 201 202 203 204 205 206
        NewTrack     = track;
        NbPtNewTrack = 1;
        PosInit = track->m_Start;
    }
    else
    {
        int     diag = track->IsPointOnEnds( GetScreen()->m_Curseur, -1 );
        wxPoint pos  = (diag & STARTPOINT) ? track->m_Start : track->m_End;
        Collect_TrackSegmentsToDrag( DrawPanel, DC, pos,
207
                                     track->ReturnMaskLayer(), track->GetNet() );
208 209 210 211 212 213 214 215 216
        track->m_Flags |= IS_DRAGGED;
        NewTrack     = NULL;
        NbPtNewTrack = 0;
        PosInit = pos;
    }
    LastPos = PosInit;
    DrawPanel->ManageCurseur = Show_MoveTrack;
    DrawPanel->ForceCloseManageCurseur = Exit_MoveTrack;

217
    g_HightLigth_NetCode = track->GetNet();
218 219 220
    g_HightLigt_Status   = TRUE;
    DrawHightLight( DC, g_HightLigth_NetCode );
    DrawPanel->ManageCurseur( DrawPanel, DC, TRUE );
221 222 223 224
}


/**********************************************************************/
225
bool WinEDA_PcbFrame::PlaceDraggedTrackSegment( TRACK* Track, wxDC* DC )
226 227 228
/**********************************************************************/
/* Place a dragged track segment or via */
{
229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271
    int        errdrc;
    DRAG_SEGM* pt_drag;

    if( Track == NULL )
        return FALSE;

    // DRC control:
    if( Drc_On )
    {
        errdrc = Drc( this, DC, Track, m_Pcb->m_Track, 1 );
        if( errdrc == BAD_DRC )
            return FALSE;
        /* Tracage des segments dragges */
        pt_drag = g_DragSegmentList;
        for( ; pt_drag; pt_drag = pt_drag->Pnext )
        {
            errdrc = Drc( this, DC, pt_drag->m_Segm, m_Pcb->m_Track, 1 );
            if( errdrc == BAD_DRC )
                return FALSE;
        }
    }

    // DRC Ok: place track segments
    Track->m_Flags = 0;
    Track->Draw( DrawPanel, DC, GR_OR );

    /* Tracage des segments dragges */
    pt_drag = g_DragSegmentList;
    for( ; pt_drag; pt_drag = pt_drag->Pnext )
    {
        Track = pt_drag->m_Segm;
        Track->SetState( EDIT, OFF );
        Track->m_Flags = 0;
        Track->Draw( DrawPanel, DC, GR_OR );
    }

    EraseDragListe();

    GetScreen()->SetModify();
    DrawPanel->ManageCurseur = NULL;
    DrawPanel->ForceCloseManageCurseur = NULL;

    return TRUE;
272 273 274 275 276 277
}


#if 0

/***********************************************/
278
void WinEDA_PcbFrame::Place_Dupl_Route( Track* Track, wxDC* DC )
279
/******************************************/
280

281
/*
282 283
 *  Routine de placement d'une piste (succession de segments)
 */
284
{
285 286 287 288 289 290 291 292 293 294 295 296 297 298 299
    D_PAD*          pt_pad;
    TRACK*          pt_track, * Track, * pt_classe, * NextS;
    int             masquelayer;
    EDA_BaseStruct* LockPoint;
    int             ii, old_net_code, new_net_code, DRC_error = 0;
    wxDC*           DC = Cmd->DC;

    ActiveDrawPanel->ManageCurseur = NULL;

    if( NewTrack == NULL )
        return;

    old_net_code = NewTrack->net_code;

    /* Placement du flag BUSY de la piste originelle, qui ne doit
300
     *   pas etre vue dans les recherches de raccordement suivantes */
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
    ii = NbPtNewTrack; pt_track = NewTrack;
    for( ; ii > 0; ii--, pt_track = (TRACK*) pt_track->Pnext )
    {
        pt_track->SetState( BUSY, ON );
    }

    /* Detection du nouveau net_code */
    ii = NbPtNewTrack; pt_track = NewTrack;
    for( ; ii > 0; ii--, pt_track = (TRACK*) pt_track->Pnext )
    {
        pt_track->net_code = 0;
    }

    new_net_code = 0;
    ii = 0; pt_track = NewTrack;
    for( ; ii < NbPtNewTrack; ii++, pt_track = (TRACK*) pt_track->Pnext )
    {
        /* Localisation de la pastille ou segment en debut de segment: */
        masquelayer = tab_layer[pt_track->Layer];
        LockPoint   = LocateLockPoint( pt_track->m_Start.x, pt_track->m_Start.y, masquelayer );
        if( LockPoint )
        {
323
            if( LockPoint->Type() == TYPEPAD )
324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340
            {
                pt_pad = (D_PAD*) LockPoint;
                new_net_code = pt_pad->net_code;
                if( new_net_code > 0 )
                    break;
            }
            else        /* debut de piste sur un segment de piste */
            {
                Track = (TRACK*) LockPoint;
                new_net_code = Track->net_code;
                if( new_net_code > 0 )
                    break;
            }
        }
        LockPoint = LocateLockPoint( pt_track->m_End.x, pt_track->m_End.y, masquelayer );
        if( LockPoint )
        {
341
            if( LockPoint->Type() == TYPEPAD )
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392
            {
                pt_pad = (D_PAD*) LockPoint;
                new_net_code = pt_pad->net_code;
                if( new_net_code > 0 )
                    break;
            }
            else        /* debut de piste sur un segment de piste */
            {
                Track = (TRACK*) LockPoint;
                new_net_code = Track->net_code;
                if( new_net_code > 0 )
                    break;
            }
        }
    }

    /* Mise a jour du nouveau net code de la piste */
    ii = 0; pt_track = NewTrack;
    for( ; ii < NbPtNewTrack; ii++, pt_track = (TRACK*) pt_track->Pnext )
    {
        pt_track->net_code = new_net_code;
    }

    /* Controle DRC de la nouvelle piste */
    ii = 0; pt_track = NewTrack;
    for( ; ii < NbPtNewTrack; ii++, pt_track = pt_track->Next() )
    {
        if( Drc_On == RUN )
            if( drc( DC, pt_track, pt_pcb->Track, 1 ) == BAD_DRC )
            {
                if( confirmation( " Erreur DRC, Place piste:" ) == YES )
                    continue;
                else
                {
                    DRC_error = 1; break;
                }
            }
    }

    if( DRC_error == 0 )
    {
        if( FlagState == MOVE_ROUTE )
        {
            /* copie nouvelle piste */
            pt_track = NewTrack;
            NewTrack = pt_track->Copy( NbPtNewTrack );
            /* effacement ancienne ( chainage et liens mauvais */
            ii = NbPtNewTrack;
            for( ; ii > 0; ii--, pt_track = NextS )
            {
                NextS = (TRACK*) pt_track->Pnext;
393
                pt_track ->DeleteStructure();
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416
            }

            test_1_net_connexion( DC, old_net_code );
        }

        pt_classe = NewTrack->GetBestInsertPoint();
        NewTrack->Insert( pt_classe );

        Trace_Une_Piste( DC, NewTrack, NbPtNewTrack, GR_OR );

        /* Mise a jour des connexions sur pads et sur pistes */
        ii = 0; pt_track = NewTrack;
        for( ; ii < NbPtNewTrack; ii++, pt_track = NextS )
        {
            NextS = (TRACK*) pt_track->Pnext;
            pt_track->SetState( BEGIN_ONPAD | END_ONPAD, OFF );
            masquelayer = tab_layer[pt_track->Layer];

            /* Localisation de la pastille ou segment sur debut segment: */
            LockPoint = LocateLockPoint( pt_track->m_Start.x, pt_track->m_Start.y, masquelayer );
            if( LockPoint )
            {
                pt_track->start = LockPoint;
417
                if( LockPoint->Type() == TYPEPAD )
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433
                {       /* fin de piste sur un pad */
                    pt_pad = (D_PAD*) LockPoint;
                    pt_track->SetState( BEGIN_ONPAD, ON );
                }
                else        /* debut de piste sur un segment de piste */
                {
                    Track = (TRACK*) LockPoint;
                    CreateLockPoint( &pt_track->m_Start.x, &pt_track->m_Start.y, Track, pt_track );
                }
            }

            /* Localisation de la pastille ou segment sur fin de segment: */
            LockPoint = LocateLockPoint( pt_track->m_End.x, pt_track->m_End.y, masquelayer );
            if( LockPoint )
            {
                pt_track->end = LockPoint;
434
                if( LockPoint->Type() == TYPEPAD )
435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490
                {       /* fin de piste sur un pad */
                    pt_pad = (D_PAD*) LockPoint;
                    pt_track->SetState( END_ONPAD, ON );
                }
                else        /* debut de piste sur un segment de piste */
                {
                    Track = (TRACK*) LockPoint;
                    CreateLockPoint( &pt_track->m_Start.x, &pt_track->m_Start.y, Track, pt_track );
                }
            }
        }

        /* Suppression du flag BUSY */
        ii = NbPtNewTrack; pt_track = NewTrack;
        for( ; ii > 0; ii--, pt_track = (TRACK*) pt_track->Pnext )
        {
            pt_track->SetState( BUSY, OFF );
        }

        test_1_net_connexion( DC, new_net_code );
        ActiveScreen->SetModify();
    }
    else    /* Erreur DRC: Annulation commande */
    {
        DisplayOpt.DisplayPcbTrackFill = SKETCH;
        Trace_Une_Piste( DC, NewTrack, NbPtNewTrack, GR_XOR );
        DisplayOpt.DisplayPcbTrackFill = Track_fill_copy;

        if( FlagState == MOVE_ROUTE )
        {       /* Remise en position de la piste deplacee */
            Track     = NewTrack;
            PosInitX -= Track->m_Start.x; PosInitY -= Track->m_Start.y;
            for( ii = 0; ii < NbPtNewTrack; ii++, Track = (TRACK*) Track->Pnext )
            {
                if( Track == NULL )
                    break;
                Track->m_Start.x += PosInitX; Track->m_Start.y += PosInitY;
                Track->m_End.x   += PosInitX; Track->m_End.y += PosInitY;
                Track->SetState( BUSY, OFF );
            }

            Trace_Une_Piste( DC, NewTrack, NbPtNewTrack, GR_OR );
        }

        if( FlagState == COPY_ROUTE )
        {       /* Suppression copie */
            for( ii = 0; ii < NbPtNewTrack; NewTrack = NextS )
            {
                if( NewTrack == NULL )
                    break;
                NextS = (TRACK*) NewTrack->Pnext;
                delete NewTrack;
            }
        }
    }
    NewTrack = NULL;
491
    m_Pcb->Display_Infos( Cmd );
492 493
    if( Etat_Surbrillance )
        Hight_Light( DC );
494 495
}

496

497
/************************************************/
498
void WinEDA_PcbFrame::Start_CopieMove_Route( TRACK* track, wxDC* DC, bool Drag )
499
/************************************************/
500

501
/* Routine permettant la recopie d'une piste (suite de segments) deja tracee
502
 */
503
{
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
    int    ii;
    TRACK* pt_segm, * pt_track;
    int    masquelayer = tab_layer[ActiveScreen->Active_Layer];
    wxDC*  DC = Cmd->DC;

    if( NewTrack )
        return;

    FlagState = (int) Cmd->Menu->param_inf;

    /* Recherche de la piste sur la couche active (non zone) */
    for( pt_segm = pt_pcb->Track; pt_segm != NULL; pt_segm = (TRACK*) pt_segm->Pnext )
    {
        pt_segm = Locate_Pistes( pt_segm, masquelayer, CURSEUR_OFF_GRILLE );
        if( pt_segm == NULL )
            break;
        break;
    }

    if( pt_segm != NULL )
    {
        if( FlagState == COPY_ROUTE )
            pt_track = Marque_Une_Piste( DC, pt_segm, &NbPtNewTrack, 0 );
        else
            pt_track = Marque_Une_Piste( DC, pt_segm, &NbPtNewTrack, GR_XOR );

        if( NbPtNewTrack ) /* Il y a NbPtNewTrack segments de piste a traiter */
        {
            /* effacement du flag BUSY de la piste originelle */
            ii = NbPtNewTrack; pt_segm = pt_track;
            for( ; ii > 0; ii--, pt_segm = (TRACK*) pt_segm->Pnext )
            {
                pt_segm->SetState( BUSY, OFF );
            }

            if( FlagState == COPY_ROUTE )
                NewTrack = pt_track->Copy( NbPtNewTrack );
            else
                NewTrack = pt_track;

            Affiche_Infos_Piste( Cmd, pt_track );

            startX = ActiveScreen->Curseur_X;
            startY = ActiveScreen->Curseur_Y;
            Place_Dupl_Route_Item.State    = WAIT;
            ActiveDrawPanel->ManageCurseur = Show_Move_Piste;
            DisplayOpt.DisplayPcbTrackFill = SKETCH;
            Trace_Une_Piste( DC, NewTrack, NbPtNewTrack, GR_XOR );
            DisplayOpt.DisplayPcbTrackFill = Track_fill_copy;
            PosInitX = NewTrack->m_Start.x; PosInitY = NewTrack->m_Start.y;
        }
    }
556 557 558 559 560 561
}


#endif

/************************************************************************/
562
EDA_BaseStruct* LocateLockPoint( BOARD* Pcb, wxPoint pos, int LayerMask )
563
/************************************************************************/
564

565
/* Routine trouvant le point " d'accrochage " d'une extremite de piste.
566 567 568 569 570 571 572 573 574
 *  Ce point peut etre un PAD ou un autre segment de piste
 *  Retourne:
 *      - pointeur sur ce PAD ou:
 *      - pointeur sur le segment ou:
 *      - NULL
 *  Parametres d'appel:
 *   coord pX, pY du point tst
 *   masque des couches a tester
 */
575
{
576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
    D_PAD*  pt_pad;
    TRACK*  ptsegm;
    MODULE* Module;

    /* detection du point type PAD */
    pt_pad = NULL;
    Module = Pcb->m_Modules;
    for( ; Module != NULL; Module = (MODULE*) Module->Pnext )
    {
        pt_pad = Locate_Pads( Module, pos, LayerMask );
        if( pt_pad )
            return pt_pad;
    }

    /* ici aucun pad n'a ete localise: detection d'un segment de piste */

    ptsegm = Fast_Locate_Piste( Pcb->m_Track, NULL, pos, LayerMask );
    if( ptsegm == NULL )
        ptsegm = Locate_Pistes( Pcb->m_Track, pos, LayerMask );
    return ptsegm;
596 597 598 599
}


/******************************************************************************/
600
TRACK* CreateLockPoint( int* pX, int* pY, TRACK* ptsegm, TRACK* refsegm )
601
/******************************************************************************/
602

603
/* Routine de creation d'un point intermediaire sur un segment
604 605 606 607 608 609 610 611 612 613 614 615
 *  le segment ptsegm est casse en 2 segments se raccordant au point pX, pY
 *  retourne:
 *      NULL si pas de nouveau point ( c.a.d si pX, pY correspondait deja
 *      a une extremite ou:
 *      pointeur sur le segment cree
 *  si refsegm != NULL refsegm est pointeur sur le segment incident,
 *  et le point cree est l'intersection des 2 axes des segments ptsegm et
 *  refsegm
 *  retourne la valeur exacte de pX et pY
 *  Si ptsegm pointe sur une via:
 *      retourne la valeur exacte de pX et pY et ptsegm,
 *      mais ne cree pas de point supplementaire
616
 *
617
 */
618
{
619 620 621 622 623 624 625 626 627 628 629
    int    cX, cY;
    int    dx, dy;          /* Coord de l'extremite du segm ptsegm / origine */
    int    ox, oy, fx, fy;  /* coord de refsegm / origine de prsegm */
    TRACK* NewTrack;

    if( (ptsegm->m_Start.x == *pX) && (ptsegm->m_Start.y == *pY) )
        return NULL;
    if( (ptsegm->m_End.x == *pX) && (ptsegm->m_End.y == *pY) )
        return NULL;

    /* le point n'est pas sur une extremite de piste */
630
    if( ptsegm->Type() == TYPEVIA )
631 632 633 634 635 636 637 638
    {
        *pX = ptsegm->m_Start.x; *pY = ptsegm->m_Start.y;
        return ptsegm;
    }

    /* calcul des coord vraies du point intermediaire dans le repere d'origine
     *  = origine de ptsegm */
    cX = *pX - ptsegm->m_Start.x;
639
    cY = *pY - ptsegm->m_Start.y;
640
    dx = ptsegm->m_End.x - ptsegm->m_Start.x;
641 642 643
    dy = ptsegm->m_End.y - ptsegm->m_Start.y;

// ***** A COMPLETER : non utilise
644 645 646
    if( refsegm )
    {
        ox = refsegm->m_Start.x - ptsegm->m_Start.x;
647
        oy = refsegm->m_Start.y - ptsegm->m_Start.y;
648
        fx = refsegm->m_End.x - ptsegm->m_Start.x;
649
        fy = refsegm->m_End.y - ptsegm->m_Start.y;
650
    }
651

652 653
    /* pour que le point soit sur le segment ptsegm: cY/cX = dy/dx */
    if( dx == 0 )
654
        cX = 0;/* segm horizontal */
655 656
    else
        cY = (cX * dy) / dx;
657

658 659
    /* creation du point intermediaire ( c'est a dire creation d'un nouveau
     *  segment, debutant au point intermediaire */
660

661 662
    cX      += ptsegm->m_Start.x; cY += ptsegm->m_Start.y;
    NewTrack = ptsegm->Copy();
663

664 665 666
    NewTrack->Insert( NULL, ptsegm );
    /* correction du pointeur de fin du nouveau segment */
    NewTrack->end = ptsegm->end;
667

668 669 670
    /* le segment primitif finit au nouveau point : */
    ptsegm->m_End.x = cX; ptsegm->m_End.y = cY;
    ptsegm->SetState( END_ONPAD, OFF );
671

672 673 674 675 676
    /* le nouveau segment debute au nouveau point : */
    ptsegm = NewTrack;;
    ptsegm->m_Start.x = cX; ptsegm->m_Start.y = cY;
    ptsegm->SetState( BEGIN_ONPAD, OFF );
    *pX = cX; *pY = cY;
677

678
    return ptsegm;
679
}