| 1 | /* |
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| 2 | * TransFig: Facility for Translating Fig code |
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| 3 | * Copyright (c) 1985 Supoj Sutantavibul |
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| 4 | * Copyright (c) 1991 Micah Beck |
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| 5 | * |
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| 6 | * Permission to use, copy, modify, distribute, and sell this software and its |
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| 7 | * documentation for any purpose is hereby granted without fee, provided that |
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| 8 | * the above copyright notice appear in all copies and that both that |
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| 9 | * copyright notice and this permission notice appear in supporting |
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| 10 | * documentation. The authors make no representations about the suitability |
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| 11 | * of this software for any purpose. It is provided "as is" without express |
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| 12 | * or implied warranty. |
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| 13 | * |
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| 14 | * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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| 16 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
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| 20 | * PERFORMANCE OF THIS SOFTWARE. |
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| 21 | * |
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| 22 | */ |
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| 23 | |
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| 24 | /* |
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| 25 | * genpictex.C : PiCTeX driver for fig2dev |
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| 26 | * |
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| 27 | * Author Micah Beck, Cornell University, 4/88 |
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| 28 | * Color, rotated text and ISO-chars added by Herbert Bauer 11/91 |
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| 29 | */ |
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| 30 | #if defined(hpux) || defined(SYSV) |
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| 31 | #include <sys/types.h> |
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| 32 | #endif |
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| 33 | #include <sys/file.h> |
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| 34 | #include <stdio.h> |
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| 35 | #include <math.h> |
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| 36 | #include "pi.h" |
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| 37 | #include "object.h" |
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| 38 | #include "fig2dev.h" |
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| 39 | #include "texfonts.h" |
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| 40 | |
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| 41 | #define UNIT "cm" /* dip */ |
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| 42 | #define CONVUNIT 2.54 /* dip */ |
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| 43 | |
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| 44 | #ifndef fabs |
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| 45 | extern double fabs(); |
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| 46 | #endif |
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| 47 | #ifndef sin |
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| 48 | extern double sin(); |
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| 49 | #endif |
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| 50 | #ifndef cos |
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| 51 | extern double cos(); |
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| 52 | #endif |
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| 53 | #ifndef acos |
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| 54 | extern double acos(); |
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| 55 | #endif |
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| 56 | extern char *ISOtoTeX[]; |
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| 57 | |
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| 58 | void genpictex_ctl_spline(), genpictex_itp_spline(); |
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| 59 | |
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| 60 | static int coord_system; |
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| 61 | static double dash_length = -1; |
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| 62 | static int line_style = SOLID_LINE; |
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| 63 | static char *linethick = "1pt"; |
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| 64 | static char *plotsymbol = "\\makebox(0,0)[l]{\\tencirc\\symbol{'160}}"; |
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| 65 | static int cur_thickness = -1; |
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| 66 | |
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| 67 | static void genpictex_option(opt, optarg) |
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| 68 | char opt, *optarg; |
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| 69 | { |
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| 70 | int i; |
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| 71 | |
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| 72 | switch (opt) { |
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| 73 | |
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| 74 | case 'a': |
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| 75 | fprintf(stderr, "warning: pictex option -a obsolete\n"); |
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| 76 | break; |
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| 77 | |
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| 78 | case 'f': /* set default text font */ |
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| 79 | for ( i = 1; i <= MAX_FONT; i++ ) |
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| 80 | if ( !strcmp(optarg, texfontnames[i]) ) break; |
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| 81 | |
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| 82 | if ( i > MAX_FONT) |
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| 83 | fprintf(stderr, |
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| 84 | "warning: non-standard font name %s\n", optarg); |
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| 85 | |
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| 86 | texfontnames[0] = texfontnames[1] = optarg; |
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| 87 | break; |
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| 88 | |
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| 89 | case 'l': /* set line thickness */ |
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| 90 | linethick = optarg; |
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| 91 | break; |
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| 92 | |
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| 93 | case 'p': /* set plot symbol */ |
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| 94 | plotsymbol = optarg; |
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| 95 | break; |
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| 96 | |
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| 97 | case 's': |
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| 98 | if (font_size <= 0 || font_size > MAXFONTSIZE) { |
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| 99 | fprintf(stderr, |
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| 100 | "warning: font size %d out of bounds\n", font_size); |
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| 101 | } |
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| 102 | break; |
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| 103 | |
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| 104 | case 'm': |
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| 105 | case 'L': |
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| 106 | break; |
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| 107 | |
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| 108 | default: |
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| 109 | put_msg(Err_badarg, opt, "pictex"); |
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| 110 | exit(1); |
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| 111 | break; |
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| 112 | } |
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| 113 | } |
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| 114 | |
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| 115 | #define TOP 10.5 /* top of page is 10.5 inch */ |
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| 116 | static double ppi; |
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| 117 | static int CONV = 0; |
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| 118 | |
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| 119 | static double convy(a) |
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| 120 | double a; |
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| 121 | { |
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| 122 | return((double)(CONV ? TOP-a : a)); |
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| 123 | } |
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| 124 | |
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| 125 | void genpictex_start(objects) |
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| 126 | F_compound *objects; |
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| 127 | { |
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| 128 | texfontsizes[0] = texfontsizes[1] = TEXFONTSIZE(font_size); |
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| 129 | |
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| 130 | coord_system = objects->nwcorner.y; |
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| 131 | ppi = objects->nwcorner.x; |
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| 132 | if (coord_system == 2) CONV = 1; |
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| 133 | |
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| 134 | /* PiCTeX start */ |
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| 135 | fprintf(tfp, "\\font\\thinlinefont=cmr5\n"); |
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| 136 | define_setfigfont(tfp); |
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| 137 | fprintf(tfp, "\\mbox{\\beginpicture\n"); |
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| 138 | fprintf(tfp, "\\setcoordinatesystem units <%6.3f%s,%6.3f%s>\n", |
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| 139 | mag, UNIT, mag, UNIT); |
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| 140 | fprintf(tfp, "\\unitlength=%6.3f%s\n", mag, UNIT); |
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| 141 | fprintf(tfp, "\\linethickness=%s\n", linethick); |
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| 142 | fprintf(tfp, "\\setplotsymbol ({%s})\n", plotsymbol); |
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| 143 | fprintf(tfp, "\\setshadesymbol ({\\thinlinefont .})\n"); |
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| 144 | fprintf(tfp, "\\setlinear\n"); |
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| 145 | } |
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| 146 | |
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| 147 | void genpictex_end() |
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| 148 | { |
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| 149 | /* PiCTeX ending */ |
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| 150 | fprintf(tfp, "\\linethickness=0pt\n"); |
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| 151 | fprintf(tfp, "\\putrectangle corners at %6.3f %6.3f and %6.3f %6.3f\n", |
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| 152 | (llx/ppi)*CONVUNIT, (convy(lly/ppi))*CONVUNIT, (urx/ppi)*CONVUNIT, (convy(ury/ppi))*CONVUNIT); |
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| 153 | fprintf(tfp, "\\endpicture}\n"); |
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| 154 | } |
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| 155 | |
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| 156 | static set_linewidth(w) |
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| 157 | int w; |
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| 158 | { |
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| 159 | /* static int cur_thickness = -1;*/ |
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| 160 | |
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| 161 | /* if (w == 0) return;*/ |
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| 162 | /* if (w != cur_thickness) {*/ |
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| 163 | if (!w) { |
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| 164 | fprintf(tfp, "\\linethickness=0pt\n"); |
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| 165 | cur_thickness = 0; |
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| 166 | } |
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| 167 | else { |
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| 168 | cur_thickness = round(w*mag); |
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| 169 | |
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| 170 | if (!cur_thickness || cur_thickness == 1) { |
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| 171 | cur_thickness = 1; |
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| 172 | fprintf(tfp, "\\linethickness=%6.3fpt\n", 0.5*cur_thickness); |
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| 173 | } |
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| 174 | else { |
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| 175 | fprintf(tfp, "\\linethickness=%dpt\n", cur_thickness-1); |
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| 176 | } |
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| 177 | } |
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| 178 | switch (cur_thickness) { |
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| 179 | case 0: |
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| 180 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\thinlinefont \\ "); |
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| 181 | break; |
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| 182 | case 1: |
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| 183 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\thinlinefont ."); |
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| 184 | break; |
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| 185 | case 2: |
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| 186 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'160}}"); |
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| 187 | break; |
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| 188 | case 3: |
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| 189 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'161}}"); |
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| 190 | break; |
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| 191 | case 4: |
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| 192 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'162}}"); |
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| 193 | break; |
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| 194 | case 5: |
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| 195 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'163}}"); |
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| 196 | break; |
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| 197 | case 6: |
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| 198 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'164}}"); |
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| 199 | break; |
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| 200 | case 7: |
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| 201 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'165}}"); |
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| 202 | break; |
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| 203 | case 8: |
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| 204 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'166}}"); |
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| 205 | break; |
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| 206 | case 9: |
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| 207 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'167}}"); |
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| 208 | break; |
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| 209 | case 10: |
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| 210 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'170}}"); |
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| 211 | break; |
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| 212 | case 11: |
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| 213 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'171}}"); |
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| 214 | break; |
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| 215 | case 12: |
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| 216 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'172}}"); |
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| 217 | break; |
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| 218 | case 13: |
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| 219 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'173}}"); |
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| 220 | break; |
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| 221 | case 14: |
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| 222 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'174}}"); |
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| 223 | break; |
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| 224 | case 15: |
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| 225 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'175}}"); |
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| 226 | break; |
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| 227 | case 16: |
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| 228 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'176}}"); |
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| 229 | break; |
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| 230 | default: |
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| 231 | fprintf(tfp, "\\setplotsymbol ({%s})\n", "\\makebox(0,0)[l]{\\tencirc\\symbol{'176}}"); |
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| 232 | break; |
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| 233 | } |
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| 234 | /* PIC fprintf(tfp, "\"D't %.3fi'\"\n", 0.7 * cur_thickness);*/ |
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| 235 | /* }*/ |
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| 236 | } |
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| 237 | |
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| 238 | void genpictex_line(l) |
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| 239 | F_line *l; |
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| 240 | { |
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| 241 | F_point *p, *q; |
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| 242 | int x, y, llx, lly, urx, ury; |
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| 243 | |
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| 244 | fprintf(tfp, "%%\n%% Fig POLYLINE object\n%%\n"); |
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| 245 | |
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| 246 | if (l->type == T_ARC_BOX) { /* A box with rounded corners */ |
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| 247 | fprintf(stderr, "Arc box not implemented; substituting box.\n"); |
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| 248 | l->type = T_BOX; |
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| 249 | } |
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| 250 | |
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| 251 | set_linewidth(l->thickness); |
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| 252 | set_style(l->style, l->style_val); |
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| 253 | set_color(l->color); |
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| 254 | |
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| 255 | p = l->points; |
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| 256 | q = p->next; |
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| 257 | |
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| 258 | if (q == NULL) { /* A single point line */ |
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| 259 | fprintf(tfp, "\\plot %6.3f %6.3f %6.3f %6.3f /\n", |
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| 260 | (p->x/ppi)*CONVUNIT, (convy(p->y/ppi))*CONVUNIT, (p->x/ppi)*CONVUNIT, (convy(p->y/ppi))*CONVUNIT); |
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| 261 | return; |
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| 262 | } |
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| 263 | |
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| 264 | if (l->type == T_BOX || l->type == T_ARC_BOX) /* A (rounded corner) box */ |
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| 265 | { |
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| 266 | x = p->x; y=p->y; |
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| 267 | llx =urx = x; |
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| 268 | lly =ury = y; |
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| 269 | while ( q!= NULL ) |
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| 270 | { |
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| 271 | x = q->x; y=q->y; |
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| 272 | if (x < llx) llx = x; |
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| 273 | if (y < lly) lly = y; |
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| 274 | if (x > urx) urx = x; |
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| 275 | if (y > ury) ury = y; |
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| 276 | q = q->next; |
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| 277 | } |
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| 278 | put_box (llx, lly, urx, ury, l); |
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| 279 | return; |
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| 280 | } |
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| 281 | |
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| 282 | if (l->back_arrow) |
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| 283 | draw_arrow_head(q->x/ppi, convy(q->y/ppi), p->x/ppi, |
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| 284 | convy(p->y/ppi), l->back_arrow->ht/ppi, l->back_arrow->wid/ppi); |
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| 285 | set_style(l->style, l->style_val); |
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| 286 | |
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| 287 | while (q->next != NULL) { |
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| 288 | |
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| 289 | putline(p->x, p->y, (double) q->x, (double) q->y, |
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| 290 | (q->next)->x, (q->next)->y, -1, -1, -1, -1); |
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| 291 | p = q; |
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| 292 | q = q->next; |
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| 293 | } |
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| 294 | |
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| 295 | putline(p->x, p->y, (double) q->x, (double) q->y, -1, -1, |
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| 296 | l->points->x, l->points->y, |
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| 297 | l->points->next->x,l->points->next->y); |
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| 298 | if (l->for_arrow) |
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| 299 | draw_arrow_head(p->x/ppi, convy(p->y/ppi), q->x/ppi, |
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| 300 | convy(q->y/ppi), l->for_arrow->ht/ppi, l->for_arrow->wid/ppi); |
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| 301 | |
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| 302 | if (l->area_fill && (int)l->area_fill != DEFAULT) |
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| 303 | fprintf(stderr, "Line area fill not implemented\n"); |
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| 304 | reset_color(l->color); |
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| 305 | } |
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| 306 | |
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| 307 | |
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| 308 | /* |
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| 309 | * draw box |
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| 310 | */ |
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| 311 | static put_box (llx, lly, urx, ury, l) |
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| 312 | int llx, lly, urx, ury; |
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| 313 | F_line *l; |
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| 314 | { |
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| 315 | int radius; |
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| 316 | |
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| 317 | set_color(l->color); |
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| 318 | if (l->type == T_BOX) |
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| 319 | { |
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| 320 | if (l->area_fill && l->area_fill == BLACK_FILL) |
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| 321 | { |
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| 322 | fprintf(tfp,"\\linethickness=%6.3f%s\n", |
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| 323 | ((convy(lly/ppi))-(convy(ury/ppi)))*CONVUNIT*mag, UNIT); |
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| 324 | fprintf(tfp,"{\\setsolid"); |
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| 325 | fprintf(tfp,"\\putrule from %6.3f %6.3f to %6.3f %6.3f }%%\n", |
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| 326 | (llx/ppi)*CONVUNIT, |
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| 327 | ((convy(lly/ppi)+convy(ury/ppi))/2)*CONVUNIT, |
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| 328 | (urx/ppi)*CONVUNIT, |
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| 329 | ((convy(lly/ppi)+convy(ury/ppi))/2)*CONVUNIT); |
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| 330 | fprintf(tfp,"\\linethickness=%dpt\n", l->thickness); |
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| 331 | } |
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| 332 | else if (l->area_fill && l->area_fill > 15) |
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| 333 | { |
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| 334 | fprintf(tfp,"\\setshadegrid span <1pt>\n"); |
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| 335 | fprintf(tfp,"\\shaderectangleson\n"); |
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| 336 | } |
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| 337 | else if (l->area_fill && l->area_fill > 10) |
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| 338 | { |
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| 339 | fprintf(tfp,"\\setshadegrid span <2pt>\n"); |
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| 340 | fprintf(tfp,"\\shaderectangleson\n"); |
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| 341 | } |
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| 342 | else if (l->area_fill && l->area_fill > 5) |
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| 343 | { |
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| 344 | fprintf(tfp,"\\setshadegrid span <4pt>\n"); |
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| 345 | fprintf(tfp,"\\shaderectangleson\n"); |
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| 346 | } |
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| 347 | else if (l->area_fill && l->area_fill == WHITE_FILL) |
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| 348 | { |
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| 349 | fprintf(stderr,"WHITE_FILL not implemeted for boxes\n"); |
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| 350 | } |
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| 351 | |
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| 352 | fprintf(tfp,"\\putrectangle corners at %6.3f %6.3f and %6.3f %6.3f\n", |
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| 353 | (llx/ppi)*CONVUNIT, (convy(lly/ppi))*CONVUNIT, |
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| 354 | (urx/ppi)*CONVUNIT, (convy(ury/ppi))*CONVUNIT); |
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| 355 | |
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| 356 | if (l->area_fill |
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| 357 | && l->area_fill != WHITE_FILL && l->area_fill != BLACK_FILL) |
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| 358 | { |
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| 359 | fprintf(tfp,"\\setshadegrid span <5pt>\n"); |
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| 360 | fprintf(tfp,"\\shaderectanglesoff\n"); |
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| 361 | } |
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| 362 | } |
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| 363 | else if (l->type == T_ARC_BOX) |
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| 364 | { |
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| 365 | radius = l->radius; |
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| 366 | |
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| 367 | if (l->area_fill) |
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| 368 | { |
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| 369 | fprintf(stderr,"area fill not implemeted for rounded corner boxes\n"); |
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| 370 | } |
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| 371 | |
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| 372 | fprintf(tfp,"\\putrule from %6.3f %6.3f to %6.3f %6.3f\n", |
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| 373 | ((llx+radius)/ppi)*CONVUNIT, (convy(lly/ppi))*CONVUNIT, |
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| 374 | ((urx-radius)/ppi)*CONVUNIT, (convy(lly/ppi))*CONVUNIT); |
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| 375 | fprintf(tfp,"\\putrule from %6.3f %6.3f to %6.3f %6.3f\n", |
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| 376 | (urx/ppi)*CONVUNIT, (convy((lly+radius)/ppi))*CONVUNIT, |
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| 377 | (urx/ppi)*CONVUNIT, (convy((ury-radius)/ppi))*CONVUNIT); |
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| 378 | fprintf(tfp,"\\putrule from %6.3f %6.3f to %6.3f %6.3f\n", |
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| 379 | ((urx-radius)/ppi)*CONVUNIT, (convy(ury/ppi))*CONVUNIT, |
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| 380 | ((llx+radius)/ppi)*CONVUNIT, (convy(ury/ppi))*CONVUNIT); |
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| 381 | fprintf(tfp,"\\putrule from %6.3f %6.3f to %6.3f %6.3f\n", |
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| 382 | (llx/ppi)*CONVUNIT, (convy((ury-radius)/ppi))*CONVUNIT, |
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| 383 | (llx/ppi)*CONVUNIT, (convy((lly+radius)/ppi))*CONVUNIT); |
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| 384 | fprintf(tfp,"\\circulararc -90 degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
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| 385 | ((urx-radius)/ppi)*CONVUNIT, (convy(lly/ppi))*CONVUNIT, |
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| 386 | ((urx-radius)/ppi)*CONVUNIT, (convy((lly+radius)/ppi))*CONVUNIT); |
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| 387 | fprintf(tfp,"\\circulararc -90 degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
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| 388 | (urx/ppi)*CONVUNIT, (convy((ury-radius)/ppi))*CONVUNIT, |
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| 389 | ((urx-radius)/ppi)*CONVUNIT, (convy((ury-radius)/ppi))*CONVUNIT); |
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| 390 | fprintf(tfp,"\\circulararc -90 degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
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| 391 | ((llx+radius)/ppi)*CONVUNIT, (convy(ury/ppi))*CONVUNIT, |
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| 392 | ((llx+radius)/ppi)*CONVUNIT, (convy((ury-radius)/ppi))*CONVUNIT); |
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| 393 | fprintf(tfp,"\\circulararc -90 degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
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| 394 | (llx/ppi)*CONVUNIT, (convy((lly+radius)/ppi))*CONVUNIT, |
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| 395 | ((llx+radius)/ppi)*CONVUNIT, (convy((lly+radius)/ppi))*CONVUNIT); |
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| 396 | } |
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| 397 | reset_color(l->color); |
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| 398 | } |
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| 399 | |
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| 400 | |
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| 401 | |
|---|
| 402 | |
|---|
| 403 | |
|---|
| 404 | |
|---|
| 405 | |
|---|
| 406 | |
|---|
| 407 | |
|---|
| 408 | /* |
|---|
| 409 | * set_style - issue style commands as appropriate |
|---|
| 410 | */ |
|---|
| 411 | static set_style(style, dash_len) |
|---|
| 412 | int style; |
|---|
| 413 | double dash_len; |
|---|
| 414 | { |
|---|
| 415 | switch (style) { |
|---|
| 416 | case SOLID_LINE: |
|---|
| 417 | if (line_style == SOLID_LINE) break; |
|---|
| 418 | fprintf(tfp, "\\setsolid\n"); |
|---|
| 419 | break; |
|---|
| 420 | |
|---|
| 421 | case DASH_LINE: |
|---|
| 422 | if (line_style == DASH_LINE && dash_length == dash_len) |
|---|
| 423 | break; |
|---|
| 424 | fprintf(tfp, "\\setdashes <%7.4f%s>\n", (0.5*dash_len*(cur_thickness+1)/ppi)*CONVUNIT, UNIT); |
|---|
| 425 | break; |
|---|
| 426 | |
|---|
| 427 | case DOTTED_LINE: |
|---|
| 428 | if (line_style == DOTTED_LINE) |
|---|
| 429 | break; |
|---|
| 430 | fprintf(tfp, "\\setdots <%7.4f%s>\n", (0.5*dash_len*(cur_thickness+1)/ppi)*CONVUNIT, UNIT); |
|---|
| 431 | break; |
|---|
| 432 | } |
|---|
| 433 | |
|---|
| 434 | line_style = style; |
|---|
| 435 | dash_length = dash_len; |
|---|
| 436 | } |
|---|
| 437 | |
|---|
| 438 | /* |
|---|
| 439 | * putline - use rules if possible |
|---|
| 440 | */ |
|---|
| 441 | static putline (start_x, start_y, end_x, end_y, next_x, next_y, |
|---|
| 442 | first_start_x, first_start_y, first_end_x, first_end_y) |
|---|
| 443 | int start_x, start_y, next_x, next_y; |
|---|
| 444 | int first_start_x, first_start_y, first_end_x, first_end_y; |
|---|
| 445 | double end_x, end_y; |
|---|
| 446 | { |
|---|
| 447 | if (line_style == SOLID_LINE && |
|---|
| 448 | ((start_x == end_x) || (start_y == end_y))) { |
|---|
| 449 | if (next_x != -1) { |
|---|
| 450 | if (start_x == end_x && end_y == next_y) { |
|---|
| 451 | if (end_y > start_y) |
|---|
| 452 | end_y += 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 453 | else |
|---|
| 454 | end_y -= 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 455 | } |
|---|
| 456 | else if (start_y == end_y && end_x == next_x) { |
|---|
| 457 | if (end_x > start_x) |
|---|
| 458 | end_x += 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 459 | else |
|---|
| 460 | end_x -= 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 461 | } |
|---|
| 462 | } |
|---|
| 463 | else if (end_x == first_start_x && end_y == first_start_y) { |
|---|
| 464 | if (start_x == end_x && first_start_y == first_end_y) { |
|---|
| 465 | if (end_y > start_y) |
|---|
| 466 | end_y += 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 467 | else |
|---|
| 468 | end_y -= 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 469 | } |
|---|
| 470 | else if (start_y == end_y && first_start_x == first_end_x) { |
|---|
| 471 | if (end_x > start_x) |
|---|
| 472 | end_x += 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 473 | else |
|---|
| 474 | end_x -= 0.5*ppi*(cur_thickness-1)/72/mag; |
|---|
| 475 | } |
|---|
| 476 | } |
|---|
| 477 | |
|---|
| 478 | fprintf(tfp, "\\putrule from %6.3f %6.3f to %6.3f %6.3f\n", |
|---|
| 479 | (start_x/ppi)*CONVUNIT, (convy(start_y/ppi))*CONVUNIT, (end_x/ppi)*CONVUNIT, (convy(end_y/ppi))*CONVUNIT); |
|---|
| 480 | } |
|---|
| 481 | else { |
|---|
| 482 | fprintf(tfp, "\\plot %6.3f %6.3f %6.3f %6.3f /\n", |
|---|
| 483 | (start_x/ppi)*CONVUNIT, (convy(start_y/ppi))*CONVUNIT, (end_x/ppi)*CONVUNIT, (convy(end_y/ppi))*CONVUNIT); |
|---|
| 484 | } |
|---|
| 485 | } |
|---|
| 486 | |
|---|
| 487 | |
|---|
| 488 | void genpictex_spline(s) |
|---|
| 489 | F_spline *s; |
|---|
| 490 | { |
|---|
| 491 | set_linewidth(s->thickness); |
|---|
| 492 | set_style(s->style, s->style_val); |
|---|
| 493 | set_color(s->color); |
|---|
| 494 | |
|---|
| 495 | if (int_spline(s)) |
|---|
| 496 | genpictex_itp_spline(s); |
|---|
| 497 | else |
|---|
| 498 | genpictex_ctl_spline(s); |
|---|
| 499 | |
|---|
| 500 | if (s->area_fill && (int)s->area_fill != DEFAULT) |
|---|
| 501 | fprintf(stderr, "Spline area fill not implemented\n"); |
|---|
| 502 | reset_color(s->color); |
|---|
| 503 | } |
|---|
| 504 | |
|---|
| 505 | #define MAXBLACKDIAM 15 /* pt */ |
|---|
| 506 | |
|---|
| 507 | void genpictex_ellipse(e) |
|---|
| 508 | F_ellipse *e; |
|---|
| 509 | { |
|---|
| 510 | fprintf(tfp, "%%\n%% Fig ELLIPSE\n%%\n"); |
|---|
| 511 | |
|---|
| 512 | set_linewidth(e->thickness); |
|---|
| 513 | set_style(e->style, e->style_val); |
|---|
| 514 | set_color(e->color); |
|---|
| 515 | |
|---|
| 516 | if ((e->area_fill == BLACK_FILL) && (e->radiuses.x == e->radiuses.y)) { |
|---|
| 517 | if (mag*e->radiuses.x > 0.5*ppi/72*MAXBLACKDIAM) |
|---|
| 518 | fprintf(stderr, "Too big black filled circle substituted by a diameter of %dpt\n", MAXBLACKDIAM); |
|---|
| 519 | fprintf(tfp, "\\put{\\makebox(0,0)[l]{\\circle*{%6.3f}}} at %6.3f %6.3f\n", |
|---|
| 520 | (2*e->radiuses.x/ppi)*CONVUNIT, |
|---|
| 521 | ((e->center.x)/ppi)*CONVUNIT, (convy(e->center.y/ppi))*CONVUNIT); |
|---|
| 522 | |
|---|
| 523 | } |
|---|
| 524 | else { |
|---|
| 525 | |
|---|
| 526 | fprintf(tfp, "\\ellipticalarc axes ratio %6.3f:%-6.3f 360 degrees \n", |
|---|
| 527 | (e->radiuses.x/ppi)*CONVUNIT, (e->radiuses.y/ppi)*CONVUNIT); |
|---|
| 528 | fprintf(tfp, "\tfrom %6.3f %6.3f center at %6.3f %6.3f\n", |
|---|
| 529 | ((e->center.x+e->radiuses.x)/ppi)*CONVUNIT, (convy(e->center.y/ppi))*CONVUNIT, |
|---|
| 530 | (e->center.x/ppi)*CONVUNIT, (convy(e->center.y/ppi))*CONVUNIT); |
|---|
| 531 | if (e->area_fill && (int)e->area_fill != DEFAULT) |
|---|
| 532 | fprintf(stderr, "Ellipse area fill not implemented\n"); |
|---|
| 533 | } |
|---|
| 534 | reset_color(e->color); |
|---|
| 535 | } |
|---|
| 536 | |
|---|
| 537 | #define HT_OFFSET (0.2 / 72.0) |
|---|
| 538 | |
|---|
| 539 | void genpictex_text(t) |
|---|
| 540 | F_text *t; |
|---|
| 541 | { |
|---|
| 542 | double x, y; |
|---|
| 543 | char *tpos; |
|---|
| 544 | unsigned char *cp; |
|---|
| 545 | |
|---|
| 546 | fprintf(tfp, "%%\n%% Fig TEXT object\n%%\n"); |
|---|
| 547 | |
|---|
| 548 | x = t->base_x/ppi; |
|---|
| 549 | y = convy(t->base_y/ppi); |
|---|
| 550 | |
|---|
| 551 | switch (t->type) { |
|---|
| 552 | |
|---|
| 553 | case T_LEFT_JUSTIFIED: |
|---|
| 554 | case DEFAULT: |
|---|
| 555 | tpos = "[lB]"; |
|---|
| 556 | break; |
|---|
| 557 | |
|---|
| 558 | case T_CENTER_JUSTIFIED: |
|---|
| 559 | tpos = "[B]"; |
|---|
| 560 | break; |
|---|
| 561 | |
|---|
| 562 | case T_RIGHT_JUSTIFIED: |
|---|
| 563 | tpos = "[rB]"; |
|---|
| 564 | break; |
|---|
| 565 | |
|---|
| 566 | default: |
|---|
| 567 | fprintf(stderr, "Text incorrectly positioned\n"); |
|---|
| 568 | return; |
|---|
| 569 | } |
|---|
| 570 | |
|---|
| 571 | unpsfont(t); |
|---|
| 572 | { int texsize; |
|---|
| 573 | double baselineskip; |
|---|
| 574 | |
|---|
| 575 | texsize = TEXFONTMAG(t); |
|---|
| 576 | baselineskip = (texsize * 1.2); |
|---|
| 577 | |
|---|
| 578 | fprintf(tfp, "\\put{\\SetFigFont{%d}{%.1f}{%s}", |
|---|
| 579 | texsize, baselineskip, TEXFONT(t->font)); |
|---|
| 580 | } |
|---|
| 581 | |
|---|
| 582 | #ifdef DVIPS |
|---|
| 583 | if(t->angle && t->type == T_LEFT_JUSTIFIED) |
|---|
| 584 | fprintf(tfp, "\\special{ps:gsave currentpoint currentpoint translate\n-%.1f rotate neg exch neg exch translate}", t->angle*180/M_PI); |
|---|
| 585 | #endif |
|---|
| 586 | |
|---|
| 587 | set_color(t->color); |
|---|
| 588 | |
|---|
| 589 | if (!special_text(t)) |
|---|
| 590 | |
|---|
| 591 | /* this loop escapes characters "$&%#_{}" */ |
|---|
| 592 | /* and deleted characters "~^\" */ |
|---|
| 593 | for(cp = (unsigned char*)t->cstring; *cp; cp++) { |
|---|
| 594 | if (strchr("$&%#_{}", *cp)) (void)fputc('\\', tfp); |
|---|
| 595 | if (strchr("~^\\", *cp)) |
|---|
| 596 | fprintf(stderr, |
|---|
| 597 | "Bad character in text object '%c'\n" ,*cp); |
|---|
| 598 | else |
|---|
| 599 | (void)fputc(*cp, tfp); |
|---|
| 600 | } |
|---|
| 601 | else |
|---|
| 602 | for(cp = (unsigned char*)t->cstring; *cp; cp++) { |
|---|
| 603 | if (*cp >= 0xa0) |
|---|
| 604 | fprintf(tfp, "%s", ISOtoTeX[(int)*cp-0xa0]); |
|---|
| 605 | else |
|---|
| 606 | fputc(*cp, tfp); |
|---|
| 607 | } |
|---|
| 608 | |
|---|
| 609 | reset_color(t->color); |
|---|
| 610 | |
|---|
| 611 | #ifdef DVIPS |
|---|
| 612 | if(t->angle) |
|---|
| 613 | { |
|---|
| 614 | if (t->type == T_LEFT_JUSTIFIED) |
|---|
| 615 | fprintf(tfp, "\\special{ps:currentpoint grestore moveto}"); |
|---|
| 616 | else |
|---|
| 617 | fprintf(stderr, "Rotated Text only for left justified text\n"); |
|---|
| 618 | } |
|---|
| 619 | #endif |
|---|
| 620 | fprintf(tfp, "} %s at %6.3f %6.3f\n", |
|---|
| 621 | tpos, (x)*CONVUNIT, (y)*CONVUNIT); |
|---|
| 622 | } |
|---|
| 623 | |
|---|
| 624 | void genpictex_arc(a) |
|---|
| 625 | F_arc *a; |
|---|
| 626 | { |
|---|
| 627 | double x, y; |
|---|
| 628 | double cx, cy, sx, sy, ex, ey; |
|---|
| 629 | double dx1, dy1, dx2, dy2, r1, r2, th1, th2, theta; |
|---|
| 630 | |
|---|
| 631 | fprintf(tfp, "%%\n%% Fig CIRCULAR ARC object\n%%\n"); |
|---|
| 632 | |
|---|
| 633 | set_linewidth(a->thickness); |
|---|
| 634 | set_style(a->style, a->style_val); |
|---|
| 635 | set_color(a->color); |
|---|
| 636 | |
|---|
| 637 | cx = a->center.x/ppi; cy = convy(a->center.y/ppi); |
|---|
| 638 | sx = a->point[0].x/ppi; sy = convy(a->point[0].y/ppi); |
|---|
| 639 | ex = a->point[2].x/ppi; ey = convy(a->point[2].y/ppi); |
|---|
| 640 | |
|---|
| 641 | if (a->for_arrow) { |
|---|
| 642 | arc_tangent(cx, cy, ex, ey, a->direction, &x, &y); |
|---|
| 643 | draw_arrow_head(x, y, ex, ey, |
|---|
| 644 | a->for_arrow->ht/ppi, a->for_arrow->wid/ppi); |
|---|
| 645 | } |
|---|
| 646 | if (a->back_arrow) { |
|---|
| 647 | arc_tangent(cx, cy, sx, sy, !a->direction, &x, &y); |
|---|
| 648 | draw_arrow_head(x, y, sx, sy, |
|---|
| 649 | a->back_arrow->ht/ppi, a->back_arrow->wid/ppi); |
|---|
| 650 | } |
|---|
| 651 | |
|---|
| 652 | dx1 = sx - cx; |
|---|
| 653 | dy1 = sy - cy; |
|---|
| 654 | dx2 = ex - cx; |
|---|
| 655 | dy2 = ey - cy; |
|---|
| 656 | |
|---|
| 657 | rtop(dx1, dy1, &r1, &th1); |
|---|
| 658 | rtop(dx2, dy2, &r2, &th2); |
|---|
| 659 | theta = th2 - th1; |
|---|
| 660 | if (theta > 0) theta -= 2*M_PI; |
|---|
| 661 | |
|---|
| 662 | /* set_linewidth(a->thickness); */ |
|---|
| 663 | |
|---|
| 664 | if (a->direction) |
|---|
| 665 | fprintf(tfp, "\\circulararc %6.3f degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
|---|
| 666 | 360+(180/M_PI * theta), (sx)*CONVUNIT, (sy)*CONVUNIT, (cx)*CONVUNIT, (cy)*CONVUNIT); |
|---|
| 667 | else |
|---|
| 668 | fprintf(tfp, "\\circulararc %6.3f degrees from %6.3f %6.3f center at %6.3f %6.3f\n", |
|---|
| 669 | -180/M_PI * theta, (ex)*CONVUNIT, (ey)*CONVUNIT, (cx)*CONVUNIT, (cy)*CONVUNIT); |
|---|
| 670 | |
|---|
| 671 | if (a->area_fill && (int)a->area_fill != DEFAULT) |
|---|
| 672 | fprintf(stderr, "Arc area fill not implemented\n"); |
|---|
| 673 | reset_color(a->color); |
|---|
| 674 | } |
|---|
| 675 | |
|---|
| 676 | |
|---|
| 677 | |
|---|
| 678 | /* |
|---|
| 679 | * rtop - rectangular to polar conversion |
|---|
| 680 | */ |
|---|
| 681 | static rtop(x, y, r, th) |
|---|
| 682 | double x, y, *r, *th; |
|---|
| 683 | { |
|---|
| 684 | *r = sqrt(x*x+y*y); |
|---|
| 685 | *th = acos(x/(*r)); |
|---|
| 686 | |
|---|
| 687 | if (y < 0) *th = 2*M_PI - *th; |
|---|
| 688 | } |
|---|
| 689 | |
|---|
| 690 | static arc_tangent(x1, y1, x2, y2, direction, x, y) |
|---|
| 691 | double x1, y1, x2, y2, *x, *y; |
|---|
| 692 | int direction; |
|---|
| 693 | { |
|---|
| 694 | if (direction) { /* counter clockwise */ |
|---|
| 695 | *x = x2 + (y2 - y1); |
|---|
| 696 | *y = y2 - (x2 - x1); |
|---|
| 697 | } |
|---|
| 698 | else { |
|---|
| 699 | *x = x2 - (y2 - y1); |
|---|
| 700 | *y = y2 + (x2 - x1); |
|---|
| 701 | } |
|---|
| 702 | } |
|---|
| 703 | |
|---|
| 704 | /* draw arrow heading from (x1, y1) to (x2, y2) */ |
|---|
| 705 | |
|---|
| 706 | static draw_arrow_head(x1, y1, x2, y2, arrowht, arrowwid) |
|---|
| 707 | double x1, y1, x2, y2, arrowht, arrowwid; |
|---|
| 708 | { |
|---|
| 709 | double x, y, xb, yb, dx, dy, l, sina, cosa; |
|---|
| 710 | double xc, yc, xd, yd; |
|---|
| 711 | int style; |
|---|
| 712 | double dash; |
|---|
| 713 | |
|---|
| 714 | dx = x2 - x1; dy = y1 - y2; |
|---|
| 715 | |
|---|
| 716 | if (!dx && !dy) |
|---|
| 717 | return ; |
|---|
| 718 | |
|---|
| 719 | l = sqrt(dx*dx+dy*dy); |
|---|
| 720 | if (l == 0) { |
|---|
| 721 | return; |
|---|
| 722 | } |
|---|
| 723 | else { |
|---|
| 724 | sina = dy / l; cosa = dx / l; |
|---|
| 725 | } |
|---|
| 726 | xb = x2*cosa - y2*sina; |
|---|
| 727 | yb = x2*sina + y2*cosa; |
|---|
| 728 | x = xb - arrowht; |
|---|
| 729 | y = yb - arrowwid / 2; |
|---|
| 730 | xc = x*cosa + y*sina; |
|---|
| 731 | yc = -x*sina + y*cosa; |
|---|
| 732 | y = yb + arrowwid / 2; |
|---|
| 733 | xd = x*cosa + y*sina; |
|---|
| 734 | yd = -x*sina + y*cosa; |
|---|
| 735 | |
|---|
| 736 | /* save line style and set to solid */ |
|---|
| 737 | style = line_style; |
|---|
| 738 | dash = dash_length; |
|---|
| 739 | set_style(SOLID_LINE, 0.0); |
|---|
| 740 | |
|---|
| 741 | fprintf(tfp, "%%\n%% arrow head\n%%\n"); |
|---|
| 742 | |
|---|
| 743 | fprintf(tfp, "\\plot %6.3f %6.3f %6.3f %6.3f %6.3f %6.3f /\n%%\n", |
|---|
| 744 | (xc)*CONVUNIT, (yc)*CONVUNIT, (x2)*CONVUNIT, (y2)*CONVUNIT, (xd)*CONVUNIT, (yd)*CONVUNIT); |
|---|
| 745 | |
|---|
| 746 | /* restore line style */ |
|---|
| 747 | set_style(style, dash); |
|---|
| 748 | } |
|---|
| 749 | |
|---|
| 750 | #define THRESHOLD .05 /* inch */ |
|---|
| 751 | |
|---|
| 752 | static quadratic_spline(a1, b1, a2, b2, a3, b3, a4, b4) |
|---|
| 753 | double a1, b1, a2, b2, a3, b3, a4, b4; |
|---|
| 754 | { |
|---|
| 755 | double x1, y1, x4, y4; |
|---|
| 756 | double xmid, ymid; |
|---|
| 757 | |
|---|
| 758 | x1 = a1; y1 = b1; |
|---|
| 759 | x4 = a4; y4 = b4; |
|---|
| 760 | xmid = (a2 + a3) / 2; |
|---|
| 761 | ymid = (b2 + b3) / 2; |
|---|
| 762 | if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD) |
|---|
| 763 | fprintf(tfp, "\t%6.3f %6.3f\n", (xmid)*CONVUNIT, (ymid)*CONVUNIT); |
|---|
| 764 | |
|---|
| 765 | else { |
|---|
| 766 | quadratic_spline(x1, y1, ((x1+a2)/2), ((y1+b2)/2), |
|---|
| 767 | ((3*a2+a3)/4), ((3*b2+b3)/4), xmid, ymid); |
|---|
| 768 | } |
|---|
| 769 | |
|---|
| 770 | if (fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) |
|---|
| 771 | fprintf(tfp, "\t%6.3f %6.3f\n", (x4)*CONVUNIT, (y4)*CONVUNIT); |
|---|
| 772 | |
|---|
| 773 | else { |
|---|
| 774 | quadratic_spline(xmid, ymid, ((a2+3*a3)/4), ((b2+3*b3)/4), |
|---|
| 775 | ((a3+x4)/2), ((b3+y4)/2), x4, y4); |
|---|
| 776 | } |
|---|
| 777 | } |
|---|
| 778 | |
|---|
| 779 | static void genpictex_ctl_spline(s) |
|---|
| 780 | F_spline *s; |
|---|
| 781 | { |
|---|
| 782 | F_point *p; |
|---|
| 783 | double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; |
|---|
| 784 | double x1, y1, x2, y2; |
|---|
| 785 | |
|---|
| 786 | fprintf(tfp, "%%\n%% Fig CONTROL PT SPLINE\n%%\n"); |
|---|
| 787 | |
|---|
| 788 | p = s->points; |
|---|
| 789 | x1 = p->x/ppi; y1 = convy(p->y/ppi); |
|---|
| 790 | p = p->next; |
|---|
| 791 | x2 = p->x/ppi; y2 = convy(p->y/ppi); |
|---|
| 792 | cx1 = (x1 + x2) / 2; cy1 = (y1 + y2) / 2; |
|---|
| 793 | cx2 = (x1 + 3 * x2) / 4; cy2 = (y1 + 3 * y2) / 4; |
|---|
| 794 | |
|---|
| 795 | if (closed_spline(s)) { |
|---|
| 796 | fprintf(tfp, "%% closed spline\n%%\n"); |
|---|
| 797 | fprintf(tfp, "\\plot\t%6.3f %6.3f \n ", (cx1)*CONVUNIT, (cy1)*CONVUNIT); |
|---|
| 798 | } |
|---|
| 799 | else { |
|---|
| 800 | fprintf(tfp, "%% open spline\n%%\n"); |
|---|
| 801 | if (s->back_arrow) |
|---|
| 802 | draw_arrow_head(cx1, cy1, x1, y1, |
|---|
| 803 | s->back_arrow->ht/ppi, s->back_arrow->wid/ppi); |
|---|
| 804 | fprintf(tfp, "\\plot\t%6.3f %6.3f %6.3f %6.3f\n ", |
|---|
| 805 | (x1)*CONVUNIT, (y1)*CONVUNIT, (cx1)*CONVUNIT, (cy1)*CONVUNIT); |
|---|
| 806 | } |
|---|
| 807 | |
|---|
| 808 | for (p = p->next; p != NULL; p = p->next) { |
|---|
| 809 | x1 = x2; y1 = y2; |
|---|
| 810 | x2 = p->x/ppi; y2 = convy(p->y/ppi); |
|---|
| 811 | cx3 = (3 * x1 + x2) / 4; cy3 = (3 * y1 + y2) / 4; |
|---|
| 812 | cx4 = (x1 + x2) / 2; cy4 = (y1 + y2) / 2; |
|---|
| 813 | quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); |
|---|
| 814 | cx1 = cx4; cy1 = cy4; |
|---|
| 815 | cx2 = (x1 + 3 * x2) / 4; cy2 = (y1 + 3 * y2) / 4; |
|---|
| 816 | } |
|---|
| 817 | x1 = x2; y1 = y2; |
|---|
| 818 | p = s->points->next; |
|---|
| 819 | x2 = p->x/ppi; y2 = convy(p->y/ppi); |
|---|
| 820 | cx3 = (3 * x1 + x2) / 4; cy3 = (3 * y1 + y2) / 4; |
|---|
| 821 | cx4 = (x1 + x2) / 2; cy4 = (y1 + y2) / 2; |
|---|
| 822 | if (closed_spline(s)) { |
|---|
| 823 | quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); |
|---|
| 824 | fprintf(tfp, "\t/\n"); |
|---|
| 825 | } |
|---|
| 826 | else { |
|---|
| 827 | fprintf(tfp, "\t /\n\\plot %6.3f %6.3f %6.3f %6.3f /\n", |
|---|
| 828 | (cx1)*CONVUNIT, (cy1)*CONVUNIT, (x1)*CONVUNIT, (y1)*CONVUNIT); |
|---|
| 829 | if (s->for_arrow) |
|---|
| 830 | draw_arrow_head(cx1, cy1, x1, y1, |
|---|
| 831 | s->for_arrow->ht/ppi, s->for_arrow->wid/ppi); |
|---|
| 832 | } |
|---|
| 833 | |
|---|
| 834 | } |
|---|
| 835 | |
|---|
| 836 | static void genpictex_itp_spline(s) |
|---|
| 837 | F_spline *s; |
|---|
| 838 | { |
|---|
| 839 | F_point *p1, *p2; |
|---|
| 840 | F_control *cp1, *cp2; |
|---|
| 841 | double x1, x2, y1, y2; |
|---|
| 842 | |
|---|
| 843 | fprintf(tfp, "%%\n%% Fig INTERPOLATED PT SPLINE\n%%\n"); |
|---|
| 844 | |
|---|
| 845 | p1 = s->points; |
|---|
| 846 | cp1 = s->controls; |
|---|
| 847 | x2 = p1->x/ppi; y2 = convy(p1->y/ppi); |
|---|
| 848 | |
|---|
| 849 | if (s->back_arrow) |
|---|
| 850 | draw_arrow_head(cp1->rx/ppi, convy(cp1->ry/ppi), x2, y2, |
|---|
| 851 | s->back_arrow->ht/ppi, s->back_arrow->wid/ppi); |
|---|
| 852 | |
|---|
| 853 | fprintf(tfp, "\\plot %6.3f %6.3f ", (x2)*CONVUNIT, (y2)*CONVUNIT); |
|---|
| 854 | for (p2 = p1->next, cp2 = cp1->next; p2 != NULL; |
|---|
| 855 | p1 = p2, cp1 = cp2, p2 = p2->next, cp2 = cp2->next) { |
|---|
| 856 | x1 = x2; y1 = y2; |
|---|
| 857 | x2 = p2->x/ppi; y2 = convy(p2->y/ppi); |
|---|
| 858 | bezier_spline(x1, y1, (double)cp1->rx/ppi, convy(cp1->ry/ppi), |
|---|
| 859 | (double)cp2->lx/ppi, convy(cp2->ly/ppi), x2, y2); |
|---|
| 860 | } |
|---|
| 861 | fprintf(tfp, "\t/\n"); |
|---|
| 862 | |
|---|
| 863 | if (s->for_arrow) |
|---|
| 864 | draw_arrow_head(cp1->lx/ppi, convy(cp1->ly/ppi), x2, y2, |
|---|
| 865 | s->for_arrow->ht/ppi, s->for_arrow->wid/ppi); |
|---|
| 866 | } |
|---|
| 867 | |
|---|
| 868 | static bezier_spline(a0, b0, a1, b1, a2, b2, a3, b3) |
|---|
| 869 | double a0, b0, a1, b1, a2, b2, a3, b3; |
|---|
| 870 | { |
|---|
| 871 | double x0, y0, x3, y3; |
|---|
| 872 | double sx1, sy1, sx2, sy2, tx, ty, tx1, ty1, tx2, ty2, xmid, ymid; |
|---|
| 873 | |
|---|
| 874 | x0 = a0; y0 = b0; |
|---|
| 875 | x3 = a3; y3 = b3; |
|---|
| 876 | if (fabs(x0 - x3) < THRESHOLD && fabs(y0 - y3) < THRESHOLD) |
|---|
| 877 | fprintf(tfp, "\t%6.3f %6.3f\n", (x3)*CONVUNIT, (y3)*CONVUNIT); |
|---|
| 878 | |
|---|
| 879 | else { |
|---|
| 880 | tx = (a1 + a2) / 2; ty = (b1 + b2) / 2; |
|---|
| 881 | sx1 = (x0 + a1) / 2; sy1 = (y0 + b1) / 2; |
|---|
| 882 | sx2 = (sx1 + tx) / 2; sy2 = (sy1 + ty) / 2; |
|---|
| 883 | tx2 = (a2 + x3) / 2; ty2 = (b2 + y3) / 2; |
|---|
| 884 | tx1 = (tx2 + tx) / 2; ty1 = (ty2 + ty) / 2; |
|---|
| 885 | xmid = (sx2 + tx1) / 2; ymid = (sy2 + ty1) / 2; |
|---|
| 886 | |
|---|
| 887 | bezier_spline(x0, y0, sx1, sy1, sx2, sy2, xmid, ymid); |
|---|
| 888 | bezier_spline(xmid, ymid, tx1, ty1, tx2, ty2, x3, y3); |
|---|
| 889 | } |
|---|
| 890 | } |
|---|
| 891 | |
|---|
| 892 | struct driver dev_pictex = { |
|---|
| 893 | genpictex_option, |
|---|
| 894 | genpictex_start, |
|---|
| 895 | genpictex_arc, |
|---|
| 896 | genpictex_ellipse, |
|---|
| 897 | genpictex_line, |
|---|
| 898 | genpictex_spline, |
|---|
| 899 | genpictex_text, |
|---|
| 900 | genpictex_end, |
|---|
| 901 | EXCLUDE_TEXT |
|---|
| 902 | }; |
|---|
| 903 | |
|---|