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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
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 23:03:56 +0000