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+/*
+ * $Header: /home/dmarkle/xtrkcad-fork-cvs/xtrkcad/app/bin/track.h,v 1.3 2009-05-25 18:11:03 m_fischer Exp $
+ */
+
+/* XTrkCad - Model Railroad CAD
+ * Copyright (C) 2005 Dave Bullis
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef TRACK_H
+#define TRACK_H
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifndef WINDOWS
+#include <unistd.h>
+#endif
+#include <math.h>
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+#include <string.h>
+
+#include "wlib.h"
+#include "common.h"
+#include "utility.h"
+#include "draw.h"
+#include "misc.h"
+
+
+
+
+extern TRKTYP_T T_NOTRACK;
+
+struct track_t ;
+typedef struct track_t * track_p;
+typedef struct track_t * track_cp;
+extern track_p tempTrack;
+extern wIndex_t trackCount;
+extern long drawTunnel;
+extern long drawEndPtV;
+extern long centerDrawMode;
+extern wDrawColor selectedColor;
+extern wDrawColor normalColor;
+extern BOOL_T useCurrentLayer;
+extern LAYER_T curTrackLayer;
+extern coOrd descriptionOff;
+extern DIST_T roadbedWidth;
+extern DIST_T roadbedLineWidth;
+extern long drawElevations;
+extern wDrawColor elevColorIgnore;
+extern wDrawColor elevColorDefined;
+extern DIST_T minTrackRadius;
+extern DIST_T maxTrackGrade;
+extern wDrawColor exceptionColor;
+#define TIEDRAWMODE_NONE (0)
+#define TIEDRAWMODE_OUTLINE (1)
+#define TIEDRAWMODE_SOLID (2)
+extern long tieDrawMode;
+extern wDrawColor tieColor;
+
+
+extern TRKINX_T max_index;
+
+typedef signed char * PATHPTR_T;
+extern PATHPTR_T pathPtr;
+extern int pathCnt;
+extern int pathMax;
+
+extern BOOL_T onTrackInSplit;
+
+typedef enum { curveTypeNone, curveTypeCurve, curveTypeStraight } curveType_e;
+
+#define PARAMS_1ST_JOIN (0)
+#define PARAMS_2ND_JOIN (1)
+#define PARAMS_EXTEND (2)
+#define PARAMS_PARALLEL (3)
+
+typedef struct {
+ curveType_e type;
+ EPINX_T ep;
+ DIST_T len;
+ ANGLE_T angle;
+ coOrd lineOrig;
+ coOrd lineEnd;
+ coOrd arcP;
+ DIST_T arcR;
+ ANGLE_T arcA0, arcA1;
+ long helixTurns;
+ } trackParams_t;
+
+#define Q_CANNOT_BE_ON_END (1)
+#define Q_IGNORE_EASEMENT_ON_EXTEND (2)
+#define Q_REFRESH_JOIN_PARAMS_ON_MOVE (3)
+#define Q_CANNOT_PLACE_TURNOUT (4)
+#define Q_DONT_DRAW_ENDPOINT (5)
+#define Q_DRAWENDPTV_1 (6)
+#define Q_CAN_PARALLEL (7)
+#define Q_CAN_MODIFYRADIUS (8)
+#define Q_EXCEPTION (9)
+#define Q_CAN_GROUP (10)
+#define Q_FLIP_ENDPTS (11)
+#define Q_CAN_NEXT_POSITION (12)
+#define Q_NODRAWENDPT (13)
+#define Q_ISTRACK (14)
+#define Q_NOT_PLACE_FROGPOINTS (15)
+#define Q_HAS_DESC (16)
+#define Q_MODIFY_REDRAW_DONT_UNDRAW_TRACK (17)
+
+typedef struct {
+ track_p trk;
+ DIST_T length;
+ DIST_T dist;
+ coOrd pos;
+ ANGLE_T angle;
+ } traverseTrack_t, *traverseTrack_p;
+
+
+typedef struct {
+ char * name;
+ void (*draw)( track_p, drawCmd_p, wDrawColor );
+ DIST_T (*distance)( track_p, coOrd * );
+ void (*describe)( track_p, char * line, CSIZE_T len );
+ void (*delete)( track_p );
+ BOOL_T (*write)( track_p, FILE * );
+ void (*read)( char * );
+ void (*move)( track_p, coOrd );
+ void (*rotate)( track_p, coOrd, ANGLE_T );
+ void (*rescale)( track_p, FLOAT_T );
+ BOOL_T (*audit)( track_p, char * );
+ ANGLE_T (*getAngle)( track_p, coOrd, EPINX_T *, EPINX_T * );
+ BOOL_T (*split)( track_p, coOrd, EPINX_T, track_p *, EPINX_T *, EPINX_T * );
+ BOOL_T (*traverse)( traverseTrack_p, DIST_T * );
+ BOOL_T (*enumerate)( track_p );
+ void (*redraw)( void );
+ BOOL_T (*trim)( track_p, EPINX_T, DIST_T );
+ BOOL_T (*merge)( track_p, EPINX_T, track_p, EPINX_T );
+ STATUS_T (*modify)( track_p, wAction_t, coOrd );
+ DIST_T (*getLength)( track_p );
+ BOOL_T (*getTrackParams)( int, track_p, coOrd pos, trackParams_t * );
+ BOOL_T (*moveEndPt)( track_p *, EPINX_T *, coOrd, DIST_T );
+ BOOL_T (*query)( track_p, int );
+ void (*ungroup)( track_p );
+ void (*flip)( track_p, coOrd, ANGLE_T );
+ void (*drawPositionIndicator)( track_p, wDrawColor );
+ void (*advancePositionIndicator)( track_p, coOrd, coOrd *, ANGLE_T * );
+ BOOL_T (*checkTraverse)( track_p, coOrd );
+ BOOL_T (*makeParallel)( track_p, coOrd, DIST_T, track_p *, coOrd *, coOrd * );
+ void (*drawDesc)( track_p, drawCmd_p, wDrawColor );
+ } trackCmd_t;
+
+
+#define NOELEV (-10000.0)
+typedef enum { ELEV_NONE, ELEV_DEF, ELEV_COMP, ELEV_GRADE, ELEV_IGNORE, ELEV_STATION } elevMode_e;
+#define ELEV_MASK 0x07
+#define ELEV_VISIBLE 0x08
+typedef struct {
+ int option;
+ coOrd doff;
+ union {
+ DIST_T height;
+ char * name;
+ } u;
+ } elev_t;
+#define EPOPT_GAPPED (1L<<0)
+typedef struct {
+ coOrd pos;
+ ANGLE_T angle;
+ TRKINX_T index;
+ track_p track;
+ elev_t elev;
+ long option;
+ } trkEndPt_t, * trkEndPt_p;
+
+dynArr_t tempEndPts_da;
+#define tempEndPts(N) DYNARR_N( trkEndPt_t, tempEndPts_da, N )
+
+
+typedef struct {
+ char type;
+ wDrawColor color;
+ DIST_T width;
+ union {
+ struct {
+ coOrd pos[2];
+ ANGLE_T angle;
+ long option;
+ } l;
+ struct {
+ coOrd center;
+ ANGLE_T a0, a1;
+ DIST_T radius;
+ } c;
+ struct {
+ coOrd pos;
+ ANGLE_T angle;
+ DIST_T R, L;
+ DIST_T l0, l1;
+ unsigned int flip:1;
+ unsigned int negate:1;
+ unsigned int Scurve:1;
+ } j;
+ struct {
+ coOrd pos;
+ ANGLE_T angle;
+ wFont_p fontP;
+ FONTSIZE_T fontSize;
+ char * string;
+ } t;
+ struct {
+ int cnt;
+ coOrd * pts;
+ coOrd orig;
+ ANGLE_T angle;
+ } p;
+ } u;
+ } trkSeg_t, * trkSeg_p;
+
+#define SEG_STRTRK ('S')
+#define SEG_CRVTRK ('C')
+#define SEG_STRLIN ('L')
+#define SEG_CRVLIN ('A')
+#define SEG_JNTTRK ('J')
+#define SEG_FILCRCL ('G')
+#define SEG_POLY ('Y')
+#define SEG_FILPOLY ('F')
+#define SEG_TEXT ('Z')
+#define SEG_UNCEP ('E')
+#define SEG_CONEP ('T')
+#define SEG_PATH ('P')
+#define SEG_SPEC ('X')
+#define SEG_CUST ('U')
+#define SEG_DOFF ('D')
+#define SEG_BENCH ('B')
+#define SEG_DIMLIN ('M')
+#define SEG_TBLEDGE ('Q')
+
+#define IsSegTrack( S ) ( (S)->type == SEG_STRTRK || (S)->type == SEG_CRVTRK || (S)->type == SEG_JNTTRK )
+
+dynArr_t tempSegs_da;
+#define tempSegs(N) DYNARR_N( trkSeg_t, tempSegs_da, N )
+
+char tempSpecial[4096];
+char tempCustom[4096];
+
+void ComputeCurvedSeg(
+ trkSeg_p s,
+ DIST_T radius,
+ coOrd p0,
+ coOrd p1 );
+
+coOrd GetSegEndPt(
+ trkSeg_p segPtr,
+ EPINX_T ep,
+ BOOL_T bounds,
+ ANGLE_T * );
+
+void GetTextBounds( coOrd, ANGLE_T, char *, FONTSIZE_T, coOrd *, coOrd * );
+void GetSegBounds( coOrd, ANGLE_T, wIndex_t, trkSeg_p, coOrd *, coOrd * );
+void MoveSegs( wIndex_t, trkSeg_p, coOrd );
+void RotateSegs( wIndex_t, trkSeg_p, coOrd, ANGLE_T );
+void FlipSegs( wIndex_t, trkSeg_p, coOrd, ANGLE_T );
+void RescaleSegs( wIndex_t, trkSeg_p, DIST_T, DIST_T, DIST_T );
+void CloneFilledDraw( wIndex_t, trkSeg_p, BOOL_T );
+void FreeFilledDraw( wIndex_t, trkSeg_p );
+DIST_T DistanceSegs( coOrd, ANGLE_T, wIndex_t, trkSeg_p, coOrd *, wIndex_t * );
+void DrawDimLine( drawCmd_p, coOrd, coOrd, char *, wFontSize_t, FLOAT_T, wDrawWidth, wDrawColor, long );
+void DrawSegs(
+ drawCmd_p d,
+ coOrd orig,
+ ANGLE_T angle,
+ trkSeg_p segPtr,
+ wIndex_t segCnt,
+ DIST_T trackGauge,
+ wDrawColor color );
+void DrawSegsO(
+ drawCmd_p d,
+ track_p trk,
+ coOrd orig,
+ ANGLE_T angle,
+ trkSeg_p segPtr,
+ wIndex_t segCnt,
+ DIST_T trackGauge,
+ wDrawColor color,
+ long options );
+ANGLE_T GetAngleSegs( wIndex_t, trkSeg_p, coOrd, wIndex_t * );
+void RecolorSegs( wIndex_t, trkSeg_p, wDrawColor );
+
+BOOL_T ReadSegs( void );
+BOOL_T WriteSegs( FILE * f, wIndex_t segCnt, trkSeg_p segs );
+typedef union {
+ struct {
+ coOrd pos; /* IN */
+ ANGLE_T angle;
+ DIST_T dist; /* OUT */
+ BOOL_T backwards;
+ } traverse1;
+ struct {
+ EPINX_T segDir; /* IN */
+ DIST_T dist; /* IN/OUT */
+ coOrd pos; /* OUT */
+ ANGLE_T angle;
+ } traverse2;
+ struct {
+ int first, last; /* IN */
+ ANGLE_T side;
+ DIST_T roadbedWidth;
+ wDrawWidth rbw;
+ coOrd orig;
+ ANGLE_T angle;
+ wDrawColor color;
+ drawCmd_p d;
+ } drawRoadbedSide;
+ struct {
+ coOrd pos1; /* IN/OUT */
+ DIST_T dd; /* OUT */
+ } distance;
+ struct {
+ track_p trk; /* OUT */
+ EPINX_T ep[2];
+ } newTrack;
+ struct {
+ DIST_T length;
+ } length;
+ struct {
+ coOrd pos; /* IN */
+ DIST_T length[2]; /* OUT */
+ trkSeg_t newSeg[2];
+ } split;
+ struct {
+ coOrd pos; /* IN */
+ ANGLE_T angle; /* OUT */
+ } getAngle;
+ } segProcData_t, *segProcData_p;
+typedef enum {
+ SEGPROC_TRAVERSE1,
+ SEGPROC_TRAVERSE2,
+ SEGPROC_DRAWROADBEDSIDE,
+ SEGPROC_DISTANCE,
+ SEGPROC_FLIP,
+ SEGPROC_NEWTRACK,
+ SEGPROC_LENGTH,
+ SEGPROC_SPLIT,
+ SEGPROC_GETANGLE
+ } segProc_e;
+void SegProc( segProc_e, trkSeg_p, segProcData_p );
+void StraightSegProc( segProc_e, trkSeg_p, segProcData_p );
+void CurveSegProc( segProc_e, trkSeg_p, segProcData_p );
+void JointSegProc( segProc_e, trkSeg_p, segProcData_p );
+
+
+
+/* debug.c */
+void SetDebug( char * );
+
+#define TB_SELECTED (1<<0)
+#define TB_VISIBLE (1<<1)
+#define TB_PROFILEPATH (1<<2)
+#define TB_ELEVPATH (1<<3)
+#define TB_PROCESSED (1<<4)
+#define TB_SHRTPATH (1<<5)
+#define TB_HIDEDESC (1<<6)
+#define TB_CARATTACHED (1<<7)
+#define TB_TEMPBITS (TB_PROFILEPATH|TB_PROCESSED)
+
+/* track.c */
+#ifdef FASTTRACK
+#include "trackx.h"
+#define GetTrkIndex( T ) ((T)->index)
+#define GetTrkType( T ) ((T)->type)
+#define GetTrkScale( T ) ((T)->scale)
+#define SetTrkScale( T, S ) (T)->scale = ((char)(S))
+/*#define GetTrkSelected( T ) ((T)->bits&TB_SELECTED)*/
+/*#define GetTrkVisible( T ) ((T)->bits&TB_VISIBLE)*/
+/*#define SetTrkVisible( T, V ) ((V) ? (T)->bits |= TB_VISIBLE : (T)->bits &= !TB_VISIBLE)*/
+#define GetTrkLayer( T ) ((T)->layer)
+#define SetBoundingBox( T, HI, LO ) \
+ (T)->hi.x = (float)(HI).x; (T)->hi.y = (float)(HI).y; (T)->lo.x = (float)(LO).x; (T)->lo.x; (T)->lo.x = (float)(LO).y = (float)(LO).y
+#define GetBoundingBox( T, HI, LO ) \
+ (HI)->x = (POS_T)(T)->hi.x; (HI)->y = (POS_T)(T)->hi.y; (LO)->x = (POS_T)(T)->lo.x; (LO)->y = (POS_T)(T)->lo.y;
+#define GetTrkEndPtCnt( T ) ((T)->endCnt)
+#define SetTrkEndPoint( T, I, PP, AA ) \
+ Assert((T)->endPt[I].track); \
+ (T)->endPt[I].pos = PP; \
+ (T)->endPt[I].angle = AA
+#define GetTrkEndTrk( T, I ) ((T)->endPt[I].track)
+#define GetTrkEndPos( T, I ) ((T)->endPt[I].pos)
+#define GetTrkEndPosXY( T, I ) PutDim((T)->endPt[I].pos.x), PutDim((T)->endPt[I].pos.y)
+#define GetTrkEndAngle( T, I ) ((T)->endPt[I].angle)
+#define GetTrkEndOption( T, I ) ((T)->endPt[I].option)
+#define SetTrkEndOption( T, I, O ) ((T)->endPt[I].option=O)
+#define GetTrkExtraData( T ) ((T)->extraData)
+#define GetTrkWidth( T ) (int)((T)->width)
+#define SetTrkWidth( T, W ) (T)->width = (unsigned int)(W)
+#define GetTrkBits(T) ((T)->bits)
+#define SetTrkBits(T,V) ((T)->bits|=(V))
+#define ClrTrkBits(T,V) ((T)->bits&=~(V))
+#define IsTrackDeleted(T) ((T)->deleted)
+#else
+TRKINX_T GetTrkIndex( track_p );
+TRKTYP_T GetTrkType( track_p );
+SCALEINX_T GetTrkScale( track_p );
+void SetTrkScale( track_p, SCALEINX_T );
+BOOL_T GetTrkSelected( track_p );
+BOOL_T GetTrkVisible( track_p );
+void SetTrkVisible( track_p, BOOL_T );
+LAYER_T GetTrkLayer( track_p );
+void SetBoundingBox( track_p, coOrd, coOrd );
+void GetBoundingBox( track_p, coOrd*, coOrd* );
+EPINX_T GetTrkEndPtCnt( track_p );
+void SetTrkEndPoint( track_p, EPINX_T, coOrd, ANGLE_T );
+track_p GetTrkEndTrk( track_p, EPINX_T );
+coOrd GetTrkEndPos( track_p, EPINX_T );
+#define GetTrkEndPosXY( trk, ep ) PutDim(GetTrkEndPos(trk,ep).x), PutDim(GetTrkEndPos(trk,ep).y)
+ANGLE_T GetTrkEndAngle( track_p, EPINX_T );
+long GetTrkEndOption( track_p, EPINX_T );
+long SetTrkEndOption( track_p, EPINX_T, long );
+struct extraData * GetTrkExtraData( track_p );
+int GetTrkWidth( track_p );
+void SetTrkWidth( track_p, int );
+int GetTrkBits( track_p );
+int SetTrkBits( track_p, int );
+int ClrTrkBits( track_p, int );
+BOOL_T IsTrackDeleted( track_p );
+#endif
+
+#define GetTrkSelected(T) (GetTrkBits(T)&TB_SELECTED)
+#define GetTrkVisible(T) (GetTrkBits(T)&TB_VISIBLE)
+#define SetTrkVisible(T,V) ((V)?SetTrkBits(T,TB_VISIBLE):ClrTrkBits(T,TB_VISIBLE))
+int ClrAllTrkBits( int );
+
+void GetTrkEndElev( track_p trk, EPINX_T e, int *option, DIST_T *height );
+void SetTrkEndElev( track_p, EPINX_T, int, DIST_T, char * );
+int GetTrkEndElevMode( track_p, EPINX_T );
+int GetTrkEndElevUnmaskedMode( track_p, EPINX_T );
+DIST_T GetTrkEndElevHeight( track_p, EPINX_T );
+char * GetTrkEndElevStation( track_p, EPINX_T );
+#define EndPtIsDefinedElev( T, E ) (GetTrkEndElevMode(T,E)==ELEV_DEF)
+#define EndPtIsIgnoredElev( T, E ) (GetTrkEndElevMode(T,E)==ELEV_IGNORE)
+#define EndPtIsStationElev( T, E ) (GetTrkEndElevMode(T,E)==ELEV_STATION)
+void SetTrkElev( track_p, int, DIST_T );
+int GetTrkElevMode( track_p );
+DIST_T GetTrkElev( track_p trk );
+void ClearElevPath( void );
+BOOL_T GetTrkOnElevPath( track_p, DIST_T * elev );
+void SetTrkLayer( track_p, int );
+BOOL_T CheckTrackLayer( track_p );
+void CopyAttributes( track_p, track_p );
+
+#define GetTrkGauge( T ) GetScaleTrackGauge(GetTrkScale(T))
+#define GetTrkScaleName( T ) GetScaleName(GetTrkScale(T))
+void SetTrkEndPtCnt( track_p, EPINX_T );
+BOOL_T WriteEndPt( FILE *, track_cp, EPINX_T );
+EPINX_T PickEndPoint( coOrd, track_cp );
+EPINX_T PickUnconnectedEndPoint( coOrd, track_cp );
+
+void AuditTracks( char *, ... );
+void CheckTrackLength( track_cp );
+track_p NewTrack( wIndex_t, TRKTYP_T, EPINX_T, CSIZE_T );
+void DescribeTrack( track_cp, char *, CSIZE_T );
+EPINX_T GetEndPtConnectedToMe( track_p, track_p );
+void SetEndPts( track_p, EPINX_T );
+BOOL_T DeleteTrack( track_p, BOOL_T );
+
+void MoveTrack( track_p, coOrd );
+void RotateTrack( track_p, coOrd, ANGLE_T );
+void RescaleTrack( track_p, FLOAT_T, coOrd );
+#define GNTignoreIgnore (1<<0)
+#define GNTfirstDefined (1<<1)
+#define GNTonPath (1<<2)
+EPINX_T GetNextTrk( track_p, EPINX_T, track_p *, EPINX_T *, int );
+EPINX_T GetNextTrkOnPath( track_p, EPINX_T );
+#define FDE_DEF 0
+#define FDE_UDF 1
+#define FDE_END 2
+int FindDefinedElev( track_p, EPINX_T, int, BOOL_T, DIST_T *, DIST_T *);
+BOOL_T ComputeElev( track_p, EPINX_T, BOOL_T, DIST_T *, DIST_T * );
+
+#define DTS_LEFT (1<<0)
+#define DTS_RIGHT (1<<1)
+#define DTS_THICK2 (1<<2)
+#define DTS_THICK3 (1<<3)
+#define DTS_TIES (1<<4)
+#define DTS_NOCENTER (1<<5)
+
+void DrawCurvedTies( drawCmd_p, track_p, coOrd, DIST_T, ANGLE_T, ANGLE_T, wDrawColor );
+void DrawCurvedTrack( drawCmd_p, coOrd, DIST_T, ANGLE_T, ANGLE_T, coOrd, coOrd, track_p, DIST_T, wDrawColor, long );
+void DrawStraightTies( drawCmd_p, track_p, coOrd, coOrd, wDrawColor );
+void DrawStraightTrack( drawCmd_p, coOrd, coOrd, ANGLE_T, track_p, DIST_T, wDrawColor, long );
+
+ANGLE_T GetAngleAtPoint( track_p, coOrd, EPINX_T *, EPINX_T * );
+DIST_T GetTrkDistance( track_cp, coOrd );
+track_p OnTrack( coOrd *, INT_T, BOOL_T );
+track_p OnTrack2( coOrd *, INT_T, BOOL_T, BOOL_T );
+
+void ComputeRectBoundingBox( track_p, coOrd, coOrd );
+void ComputeBoundingBox( track_p );
+void DrawEndPt( drawCmd_p, track_p, EPINX_T, wDrawColor );
+void DrawEndPt2( drawCmd_p, track_p, EPINX_T, wDrawColor );
+void DrawEndElev( drawCmd_p, track_p, EPINX_T, wDrawColor );
+wDrawColor GetTrkColor( track_p, drawCmd_p );
+void DrawTrack( track_cp, drawCmd_p, wDrawColor );
+void DrawTracks( drawCmd_p, DIST_T, coOrd, coOrd );
+void RedrawLayer( LAYER_T, BOOL_T );
+void DrawNewTrack( track_cp );
+void DrawOneTrack( track_cp, drawCmd_p );
+void UndrawNewTrack( track_cp );
+void DrawSelectedTracks( drawCmd_p );
+void HilightElevations( BOOL_T );
+void HilightSelectedEndPt( BOOL_T, track_p, EPINX_T );
+DIST_T EndPtDescriptionDistance( coOrd, track_p, EPINX_T );
+STATUS_T EndPtDescriptionMove( track_p, EPINX_T, wAction_t, coOrd );
+
+track_p FindTrack( TRKINX_T );
+void ResolveIndex( void );
+void RenumberTracks( void );
+BOOL_T ReadTrack( char * );
+BOOL_T WriteTracks( FILE * );
+BOOL_T ExportTracks( FILE * );
+void ImportStart( void );
+void ImportEnd( void );
+void FreeTrack( track_p );
+void ClearTracks( void );
+BOOL_T TrackIterate( track_p * );
+
+void LoosenTracks( void );
+
+void SaveTrackState( void );
+void RestoreTrackState( void );
+void SaveCarState( void );
+void RestoreCarState( void );
+TRKTYP_T InitObject( trackCmd_t* );
+
+void ConnectTracks( track_p, EPINX_T, track_p, EPINX_T );
+BOOL_T ReconnectTrack( track_p, EPINX_T, track_p, EPINX_T );
+void DisconnectTracks( track_p, EPINX_T, track_p, EPINX_T );
+BOOL_T ConnectAbuttingTracks( track_p, EPINX_T, track_p, EPINX_T );
+BOOL_T SplitTrack( track_p, coOrd, EPINX_T, track_p *leftover, BOOL_T );
+BOOL_T TraverseTrack( traverseTrack_p, DIST_T * );
+BOOL_T RemoveTrack( track_p*, EPINX_T*, DIST_T* );
+BOOL_T TrimTrack( track_p, EPINX_T, DIST_T );
+BOOL_T MergeTracks( track_p, EPINX_T, track_p, EPINX_T );
+STATUS_T ExtendStraightFromOrig( track_p, wAction_t, coOrd );
+STATUS_T ModifyTrack( track_p, wAction_t, coOrd );
+BOOL_T GetTrackParams( int, track_p, coOrd, trackParams_t* );
+BOOL_T MoveEndPt( track_p *, EPINX_T *, coOrd, DIST_T );
+BOOL_T QueryTrack( track_p, int );
+void UngroupTrack( track_p );
+BOOL_T IsTrack( track_p );
+char * GetTrkTypeName( track_p );
+
+DIST_T GetFlexLength( track_p, EPINX_T, coOrd * );
+void LabelLengths( drawCmd_p, track_p, wDrawColor );
+DIST_T GetTrkLength( track_p, EPINX_T, EPINX_T );
+
+void SelectAbove( void );
+void SelectBelow( void );
+
+void FlipPoint( coOrd*, coOrd, ANGLE_T );
+void FlipTrack( track_p, coOrd, ANGLE_T );
+
+void DrawPositionIndicators( void );
+void AdvancePositionIndicator( track_p, coOrd, coOrd *, ANGLE_T * );
+
+BOOL_T MakeParallelTrack( track_p, coOrd, DIST_T, track_p *, coOrd *, coOrd * );
+
+#include "cundo.h"
+#include "cselect.h"
+
+/* cmisc.c */
+wIndex_t describeCmdInx;
+typedef enum { DESC_NULL, DESC_POS, DESC_FLOAT, DESC_ANGLE, DESC_LONG, DESC_COLOR, DESC_DIM, DESC_PIVOT, DESC_LAYER, DESC_STRING, DESC_TEXT, DESC_LIST, DESC_EDITABLELIST } descType;
+#define DESC_RO (1<<0)
+#define DESC_IGNORE (1<<1)
+#define DESC_NOREDRAW (1<<2)
+#define DESC_CHANGE (1<<8)
+typedef enum { DESC_PIVOT_FIRST, DESC_PIVOT_MID, DESC_PIVOT_SECOND, DESC_PIVOT_NONE } descPivot_t;
+#define DESC_PIVOT_1
+typedef struct {
+ coOrd pos;
+ POS_T ang;
+ } descEndPt_t;
+typedef struct {
+ descType type;
+ char * label;
+ void * valueP;
+ int mode;
+ wControl_p control0;
+ wControl_p control1;
+ wPos_t posy;
+ } descData_t, * descData_p;
+typedef void (*descUpdate_t)( track_p, int, descData_p, BOOL_T );
+void DoDescribe( char *, track_p, descData_p, descUpdate_t );
+void DescribeCancel( void );
+BOOL_T UpdateDescStraight( int, int, int, int, int, descData_p, long );
+
+
+/* compound.c */
+DIST_T CompoundDescriptionDistance( coOrd, track_p );
+STATUS_T CompoundDescriptionMove( track_p, wAction_t, coOrd );
+
+/* elev.c */
+#define ELEV_FORK (3)
+#define ELEV_BRANCH (2)
+#define ELEV_ISLAND (1)
+#define ELEV_ALONE (0)
+
+long oldElevationEvaluation;
+EPINX_T GetNextTrkOnPath( track_p trk, EPINX_T ep );
+int FindDefinedElev( track_p, EPINX_T, int, BOOL_T, DIST_T *, DIST_T * );
+BOOL_T ComputeElev( track_p, EPINX_T, BOOL_T, DIST_T *, DIST_T * );
+void RecomputeElevations( void );
+void UpdateAllElevations( void );
+DIST_T GetElevation( track_p );
+void ClrTrkElev( track_p );
+void SetTrkElevModes( BOOL_T, track_p, EPINX_T, track_p, EPINX_T );
+void UpdateTrkEndElev( track_p, EPINX_T, int, DIST_T, char * );
+void DrawTrackElev( track_p, drawCmd_p, BOOL_T );
+
+/* cdraw.c */
+track_p MakeDrawFromSeg( coOrd, ANGLE_T, trkSeg_p );
+BOOL_T OnTableEdgeEndPt( track_p, coOrd * );
+BOOL_T ReadTableEdge( char * );
+BOOL_T ReadText( char * );
+
+/* chotbar.c */
+extern DIST_T curBarScale;
+void InitHotBar( void );
+void HideHotBar( void );
+void LayoutHotBar( void );
+typedef enum { HB_SELECT, HB_DRAW, HB_LISTTITLE, HB_BARTITLE, HB_FULLTITLE } hotBarProc_e;
+typedef char * (*hotBarProc_t)( hotBarProc_e, void *, drawCmd_p, coOrd * );
+void AddHotBarElement( char *, coOrd, coOrd, BOOL_T, DIST_T, void *, hotBarProc_t );
+void HotBarCancel( void );
+void AddHotBarTurnouts( void );
+void AddHotBarStructures( void );
+void AddHotBarCarDesc( void );
+
+#endif
+
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