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 | |
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402 | |
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403 | |
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404 | |
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405 | |
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406 | |
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407 | |
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408 | /* |
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409 | * set_style - issue style commands as appropriate |
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410 | */ |
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411 | static set_style(style, dash_len) |
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412 | int style; |
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413 | double dash_len; |
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414 | { |
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415 | switch (style) { |
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416 | case SOLID_LINE: |
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417 | if (line_style == SOLID_LINE) break; |
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418 | fprintf(tfp, "\\setsolid\n"); |
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419 | break; |
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420 | |
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421 | case DASH_LINE: |
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422 | if (line_style == DASH_LINE && dash_length == dash_len) |
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423 | break; |
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424 | fprintf(tfp, "\\setdashes <%7.4f%s>\n", (0.5*dash_len*(cur_thickness+1)/ppi)*CONVUNIT, UNIT); |
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425 | break; |
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426 | |
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427 | case DOTTED_LINE: |
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428 | if (line_style == DOTTED_LINE) |
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429 | break; |
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430 | fprintf(tfp, "\\setdots <%7.4f%s>\n", (0.5*dash_len*(cur_thickness+1)/ppi)*CONVUNIT, UNIT); |
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431 | break; |
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432 | } |
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433 | |
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434 | line_style = style; |
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435 | dash_length = dash_len; |
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436 | } |
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437 | |
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438 | /* |
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439 | * putline - use rules if possible |
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440 | */ |
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441 | static putline (start_x, start_y, end_x, end_y, next_x, next_y, |
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442 | first_start_x, first_start_y, first_end_x, first_end_y) |
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443 | int start_x, start_y, next_x, next_y; |
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444 | int first_start_x, first_start_y, first_end_x, first_end_y; |
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445 | double end_x, end_y; |
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446 | { |
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447 | if (line_style == SOLID_LINE && |
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448 | ((start_x == end_x) || (start_y == end_y))) { |
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449 | if (next_x != -1) { |
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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; |
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873 | |
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874 | x0 = a0; y0 = b0; |
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875 | x3 = a3; y3 = b3; |
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876 | if (fabs(x0 - x3) < THRESHOLD && fabs(y0 - y3) < THRESHOLD) |
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877 | fprintf(tfp, "\t%6.3f %6.3f\n", (x3)*CONVUNIT, (y3)*CONVUNIT); |
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878 | |
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879 | else { |
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880 | tx = (a1 + a2) / 2; ty = (b1 + b2) / 2; |
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881 | sx1 = (x0 + a1) / 2; sy1 = (y0 + b1) / 2; |
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882 | sx2 = (sx1 + tx) / 2; sy2 = (sy1 + ty) / 2; |
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883 | tx2 = (a2 + x3) / 2; ty2 = (b2 + y3) / 2; |
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884 | tx1 = (tx2 + tx) / 2; ty1 = (ty2 + ty) / 2; |
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885 | xmid = (sx2 + tx1) / 2; ymid = (sy2 + ty1) / 2; |
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886 | |
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887 | bezier_spline(x0, y0, sx1, sy1, sx2, sy2, xmid, ymid); |
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888 | bezier_spline(xmid, ymid, tx1, ty1, tx2, ty2, x3, y3); |
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889 | } |
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890 | } |
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891 | |
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892 | struct driver dev_pictex = { |
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893 | genpictex_option, |
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894 | genpictex_start, |
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895 | genpictex_arc, |
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896 | genpictex_ellipse, |
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897 | genpictex_line, |
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898 | genpictex_spline, |
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899 | genpictex_text, |
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900 | genpictex_end, |
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901 | EXCLUDE_TEXT |
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902 | }; |
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903 | |
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