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/** \file trkseg.h
*
*/
/* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef TRKSEG_H
#define TRKSEG_H
#include "common.h"
#define MAX_PATH_SEGS (127)
typedef enum { FREEFORM, RECTANGLE, POLYLINE
} PolyType_e;
typedef struct trkSeg_t {
char type;
wDrawColor color;
LWIDTH_T lineWidth;
dynArr_t bezSegs; //placed here to avoid overwrites
union {
struct {
coOrd pos[4];
ANGLE_T angle;
long option;
} l;
struct {
coOrd pos[4];
ANGLE_T angle0;
ANGLE_T angle3;
DIST_T minRadius;
DIST_T radius0;
DIST_T radius3;
DIST_T length;
} b;
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;
BOOL_T boxed;
char * string;
} t;
struct {
int cnt;
pts_t * pts;
coOrd orig;
ANGLE_T angle;
PolyType_e polyType;
} p;
} u;
} trkSeg_t;
typedef struct trkSeg_t * trkSeg_p;
#define SEG_STRTRK ('S')
#define SEG_CRVTRK ('C')
#define SEG_BEZTRK ('W')
#define SEG_STRLIN ('L')
#define SEG_CRVLIN ('A')
#define SEG_BEZLIN ('H')
#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 || (S)->type == SEG_BEZTRK)
extern dynArr_t tempSegs_da;
#define tempSegs(N) DYNARR_N( trkSeg_t, tempSegs_da, N )
extern char tempSpecial[4096];
extern 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 * );
ANGLE_T GetAngleSegs( wIndex_t, trkSeg_p, coOrd *, wIndex_t *, DIST_T *,
BOOL_T *, wIndex_t *, BOOL_T * );
void RecolorSegs( wIndex_t, trkSeg_p, wDrawColor );
BOOL_T ReadSegs( void );
BOOL_T WriteSegs( FILE * f, wIndex_t segCnt, trkSeg_p segs );
BOOL_T WriteSegsEnd(FILE * f, wIndex_t segCnt, trkSeg_p segs, BOOL_T writeEnd);
typedef union {
struct {
coOrd pos; /* IN the point to get to */
ANGLE_T angle; /* IN is the angle that the object starts at (-ve for forwards) */
DIST_T dist; /* OUT is how far it is along the track to get to pos*/
BOOL_T backwards; /* OUT which way are we going? */
BOOL_T reverse_seg; /* OUT the seg is backwards curve */
BOOL_T negative; /* OUT the curve is negative */
int BezSegInx; /* OUT for Bezier Seg - the segment we are on in Bezier */
BOOL_T segs_backwards; /* OUT for Bezier Seg - the direction of the overall Bezier */
} traverse1; // Find dist between pos and end of track that starts with angle set backwards
struct {
BOOL_T segDir; /* IN Direction to go in this seg*/
int BezSegInx; /* IN for Bezier Seg which element to start with*/
BOOL_T segs_backwards; /* IN for Bezier Seg which way to go down the array*/
DIST_T dist; /* IN/OUT In = distance to go, Out = distance left */
coOrd pos; /* OUT = point reached if dist = 0 */
ANGLE_T angle; /* OUT = angle at point */
} traverse2; //Return distance left (or 0) and angle and pos when going dist from segDir end
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 pos to find */
DIST_T dd; /* OUT distance from nearest point in seg to input pos */
} distance;
struct {
track_p trk; /* OUT */
EPINX_T ep[2];
} newTrack;
struct {
DIST_T length; /* OUT */
} length;
struct {
coOrd pos; /* IN */
DIST_T length[2]; /* OUT */
trkSeg_t newSeg[2];
} split;
struct {
coOrd pos; /* IN Pos to find nearest to - OUT found pos on curve*/
ANGLE_T angle; /* OUT angle at pos - (-ve if backwards)*/
BOOL_T negative_radius; /* OUT Radius <0? */
BOOL_T backwards; /* OUT Seg is backwards */
DIST_T radius; /* OUT radius at pos */
coOrd center; /* OUT center of curvature at pos (0 = straight)*/
int bezSegInx; /* OUT if a bezier proc, the index of the sub segment */
} getAngle; // Get pos on seg nearest, angle at that (-ve for forwards)
} 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 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 DrawSegsDA(
drawCmd_p d,
track_p trk,
coOrd orig,
ANGLE_T angle,
dynArr_t * da,
DIST_T trackGauge,
wDrawColor color,
long options );
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 );
void StraightSegProc( segProc_e, trkSeg_p, segProcData_p );
void CurveSegProc( segProc_e, trkSeg_p, segProcData_p );
void JointSegProc( segProc_e, trkSeg_p, segProcData_p );
void BezierSegProc( segProc_e, trkSeg_p, segProcData_p ); //Used in Cornu join
void CleanSegs( dynArr_t *);
void CopyPoly(trkSeg_p seg_p, wIndex_t segCnt);
wBool_t CompareSegs( trkSeg_p, int, trkSeg_p, int );
#endif
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