1 | /* new3dout.c |
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2 | * .3dx writing routines |
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3 | * Copyright (C) 2000, 2001 Phil Underwood |
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4 | * Copyright (C) 2001, 2002, 2003 Olly Betts |
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5 | * |
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6 | * This program is free software; you can redistribute it and/or modify |
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7 | * it under the terms of the GNU General Public License as published by |
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8 | * the Free Software Foundation; either version 2 of the License, or |
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9 | * (at your option) any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | * GNU General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU General Public License |
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17 | * along with this program; if not, write to the Free Software |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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19 | */ |
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20 | |
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21 | #include <config.h> |
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22 | #include "cavern.h" |
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23 | |
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24 | #ifdef CHASM3DX |
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25 | |
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26 | #include <stdio.h> |
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27 | #include <math.h> |
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28 | |
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29 | #include "3ddefs.h" |
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30 | #include "debug.h" |
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31 | #include "filename.h" |
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32 | |
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33 | twig *rhizome, *limb; |
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34 | char *firstfilename, *startingdir; |
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35 | int fUseNewFormat = 0; |
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36 | |
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37 | static enum { |
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38 | IMG_NONE = 0, |
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39 | IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24, |
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40 | IMG_OUTOFMEMORY = /*Out of memory %.0s*/38, |
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41 | IMG_DIRECTORY = /*Filename `%s' refers to directory*/44, |
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42 | IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47, |
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43 | IMG_BADFORMAT = /*Bad 3d image file `%s'*/106 |
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44 | } img_errno = IMG_NONE; |
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45 | |
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46 | /* put counted string */ |
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47 | static int |
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48 | fputcs(const char *s, FILE *fh) |
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49 | { |
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50 | int len = strlen(s); |
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51 | /* if the label is empty or > 255 chars. store 0 in the length byte |
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52 | * followed by a 32 bit length value */ |
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53 | if (len == 0 || len > 255) { |
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54 | if (putc(0, fh) == EOF) return EOF; |
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55 | put32((INT32_T)len, fh); |
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56 | if (ferror(fh)) return EOF; |
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57 | } else { |
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58 | if (putc((unsigned char)len, fh) == EOF) return EOF; |
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59 | } |
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60 | return fputs(s, fh); |
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61 | } |
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62 | |
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63 | /* length on disk of counted string */ |
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64 | static unsigned int |
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65 | cslen(const char *s) |
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66 | { |
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67 | int len = strlen(s); |
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68 | /* if the label is empty or > 255 chars. store 0 in the length byte |
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69 | * followed by a 32 bit length value */ |
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70 | if (len == 0 || len > 255) return len + 5; |
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71 | return len + 1; |
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72 | } |
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73 | |
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74 | static char *basesource; |
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75 | static int statcount = 1; /* this is the total number of things added */ |
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76 | |
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77 | static int |
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78 | scount(twig *twiglet) |
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79 | { |
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80 | twig *lib; |
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81 | |
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82 | if (twiglet->from) return 1; |
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83 | |
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84 | SVX_ASSERT(twiglet->to); |
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85 | |
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86 | lib = twiglet->down; |
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87 | twiglet->count = 0; |
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88 | while (lib->right) { |
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89 | lib = lib->right; |
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90 | twiglet->count += scount(lib); |
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91 | } |
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92 | return (twiglet->count ? 1 : 0); |
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93 | } |
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94 | |
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95 | static void |
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96 | cave_write_title(const char *title, img *p_img) |
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97 | { |
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98 | putc(TITLE_3D, p_img->fh); |
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99 | fputcs(title, p_img->fh); |
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100 | } |
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101 | |
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102 | static int |
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103 | cave_write_pos(img * p_img, pos *pid, prefix *pre) |
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104 | { |
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105 | if (pid->id == 0) { |
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106 | const char *tag; |
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107 | unsigned int len; |
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108 | pid->id = (INT32_T)statcount; |
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109 | tag = pre->ident; |
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110 | len = cslen(tag) + 12 + 4; |
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111 | /* storage station name, 12 for data, 4 for id */ |
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112 | putc(STATION_3D, p_img->fh); |
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113 | if (len == 0 || len > 255) { |
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114 | if (putc(0, p_img->fh) == EOF) return EOF; |
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115 | put32((INT32_T)len, p_img->fh); |
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116 | if (ferror(p_img->fh)) return EOF; |
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117 | } else { |
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118 | if (putc((unsigned char)len, p_img->fh) == EOF) return EOF; |
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119 | } |
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120 | put32((INT32_T)statcount, p_img->fh); /* station ID */ |
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121 | put32((INT32_T)(pid->p[0] * 100.0), p_img->fh); /* X in cm */ |
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122 | put32((INT32_T)(pid->p[1] * 100.0), p_img->fh); /* Y */ |
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123 | put32((INT32_T)(pid->p[2] * 100.0), p_img->fh); /* Z */ |
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124 | fputcs(tag, p_img->fh); |
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125 | statcount++; |
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126 | } else { |
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127 | /* we've already put this in the file, so just a link is needed */ |
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128 | putc(STATLINK_3D, p_img->fh); |
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129 | putc(0x04, p_img->fh); |
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130 | put32((INT32_T)pid->id, p_img->fh); |
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131 | } |
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132 | return 0; |
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133 | } |
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134 | |
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135 | img * |
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136 | cave_open_write(const char *fnm, const char *title) |
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137 | { |
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138 | img *p_img; |
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139 | if (fDirectory(fnm)) { |
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140 | img_errno = IMG_DIRECTORY; |
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141 | return NULL; |
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142 | } |
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143 | |
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144 | p_img = (img *)xosmalloc(ossizeof(img)); |
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145 | if (p_img == NULL) { |
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146 | img_errno = IMG_OUTOFMEMORY; |
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147 | return NULL; |
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148 | } |
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149 | |
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150 | p_img->fh = fopen(fnm, "wb"); |
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151 | if (!p_img->fh) { |
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152 | osfree(p_img); |
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153 | img_errno = IMG_CANTOPENOUT; |
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154 | return NULL; |
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155 | } |
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156 | fputs("SVX3d", p_img->fh); |
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157 | putc(0x00, p_img->fh); /* Major version 0 */ |
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158 | putc(0x0A, p_img->fh); /* Minor version 10*/ |
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159 | put32(0, p_img->fh); /* dummy number for num of stations: fill later */ |
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160 | cave_write_title(title, p_img); |
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161 | return p_img; |
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162 | } |
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163 | |
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164 | int |
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165 | cave_error(void) |
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166 | { |
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167 | return img_errno; |
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168 | } |
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169 | |
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170 | static void |
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171 | cave_write_source(img * p_img, const char *source) |
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172 | { |
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173 | /* create a relative path, given an absolute dir, and an absolute file */ |
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174 | /* part 1. find where they differ */ |
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175 | char *allocated_source = NULL; |
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176 | /* is it an absolute? */ |
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177 | if (!fAbsoluteFnm(source)) { |
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178 | allocated_source = use_path(startingdir, source); |
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179 | source = allocated_source; |
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180 | } |
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181 | |
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182 | /* strip source down to just a file name... */ |
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183 | if (strncmp(source, basesource, strlen(basesource)) != 0) { |
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184 | printf("Warning: source links may not work\n"); |
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185 | } else { |
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186 | source = source + strlen(basesource); |
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187 | } |
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188 | putc(SOURCE_3D, p_img->fh); |
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189 | fputcs(source, p_img->fh); |
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190 | osfree(allocated_source); |
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191 | } |
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192 | |
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193 | static void |
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194 | save3d(img *p_img, twig *sticky) |
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195 | { |
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196 | unsigned int ltag; |
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197 | unsigned int stubcount; |
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198 | double err, length, offset; |
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199 | twig *twiglet; |
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200 | for (twiglet = sticky->right; twiglet; twiglet = twiglet->right) { |
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201 | if (twiglet->from) { |
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202 | if (!twiglet->to) { /* fixed point */ |
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203 | cave_write_pos(p_img, twiglet->from->pos, twiglet->from); |
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204 | } else { /*leg */ |
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205 | /* calculate an average percentage error, based on %age change of polars */ |
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206 | /* offset is how far the _to_ point is from where we thought it would be */ |
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207 | offset = hypot(twiglet->to->pos->p[2] - (twiglet->from->pos->p[2] + |
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208 | twiglet->delta[2]), |
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209 | hypot(twiglet->to->pos->p[0] - (twiglet->from->pos->p[0] + |
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210 | twiglet->delta[0]), |
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211 | twiglet->to->pos->p[1] - (twiglet->from->pos->p[1] + |
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212 | twiglet->delta[1]))); |
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213 | /* length is our reconstituted expected length */ |
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214 | length = hypot(hypot(twiglet->delta[0], twiglet->delta[1]), |
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215 | twiglet->delta[2]); |
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216 | #ifdef DEBUG |
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217 | if (strcmp(twiglet->from->ident, "86") == 0) |
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218 | printf("deltas... %g %g %g length %g offset %g", |
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219 | twiglet->delta[0], twiglet->delta[1], twiglet->delta[2], |
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220 | length, offset); |
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221 | #endif |
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222 | if (fabs(length) < 0.01) { |
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223 | err = 0; /* What is the error for a leg with zero length? |
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224 | * Phil - he say none. */ |
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225 | } else { |
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226 | err = 10000.0 * offset / length; |
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227 | } |
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228 | putc(LEG_3D, p_img->fh); |
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229 | put16((INT16_T)0x02, p_img->fh); |
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230 | putc(0x04, p_img->fh); |
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231 | put32((INT32_T)err, p_img->fh); /* output error in %*100 */ |
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232 | cave_write_pos(p_img, twiglet->from->pos, twiglet->from); |
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233 | cave_write_pos(p_img, twiglet->to->pos, twiglet->to); |
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234 | } |
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235 | } else { |
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236 | if (twiglet->count) { |
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237 | putc(BRANCH_3D, p_img->fh); |
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238 | /* number of records - legs + values */ |
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239 | stubcount = 0; |
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240 | if (twiglet->source) stubcount++; |
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241 | if (twiglet->drawings) stubcount++; |
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242 | if (twiglet->instruments) stubcount++; |
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243 | if (twiglet->tape) stubcount++; |
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244 | if (twiglet->date) stubcount++; |
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245 | stubcount += twiglet->count; |
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246 | if (stubcount > 32767) { |
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247 | put16(0, p_img->fh); |
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248 | put32(stubcount, p_img->fh); |
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249 | } else { |
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250 | put16((unsigned short)stubcount, p_img->fh); |
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251 | } |
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252 | ltag = cslen(twiglet->to->ident); |
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253 | if (ltag <= 255) { |
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254 | putc((unsigned char)ltag, p_img->fh); |
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255 | } else { |
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256 | putc(0, p_img->fh); |
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257 | put32(ltag, p_img->fh); |
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258 | } |
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259 | fputcs(twiglet->to->ident, p_img->fh); |
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260 | if (twiglet->source) cave_write_source(p_img, twiglet->source); |
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261 | if (twiglet->date) { |
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262 | putc(DATE_3D, p_img->fh); |
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263 | fputcs(twiglet->date, p_img->fh); |
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264 | } |
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265 | if (twiglet->drawings) { |
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266 | putc(DRAWINGS_3D, p_img->fh); |
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267 | fputcs(twiglet->drawings, p_img->fh); |
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268 | } |
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269 | if (twiglet->instruments) { |
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270 | putc(INSTRUMENTS_3D, p_img->fh); |
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271 | fputcs(twiglet->instruments, p_img->fh); |
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272 | } |
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273 | if (twiglet->tape) { |
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274 | putc(TAPE_3D, p_img->fh); |
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275 | fputcs(twiglet->tape, p_img->fh); |
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276 | } |
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277 | save3d(p_img, twiglet->down); |
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278 | } |
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279 | } |
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280 | } |
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281 | } |
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282 | |
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283 | static void |
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284 | cave_write_base_source(img *p_img) |
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285 | { |
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286 | char *temp; |
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287 | /* is it an absolute? */ |
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288 | if (fAbsoluteFnm(firstfilename)) { |
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289 | basesource = path_from_fnm(firstfilename); |
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290 | } else { |
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291 | temp = use_path(startingdir,firstfilename); |
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292 | basesource = path_from_fnm(temp); |
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293 | osfree(temp); |
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294 | } |
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295 | |
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296 | #if 0 |
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297 | /* remove any ./../. etcs but not today */ |
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298 | temp = osstrdup(basesource); |
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299 | realpath(temp, basesource); |
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300 | #endif |
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301 | |
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302 | putc(BASE_SOURCE_3D, p_img->fh); |
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303 | fputcs(basesource, p_img->fh); |
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304 | |
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305 | /* get the actual file name */ |
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306 | temp = leaf_from_fnm(firstfilename); |
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307 | putc(BASE_FILE_3D, p_img->fh); |
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308 | fputcs(temp, p_img->fh); |
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309 | osfree(temp); |
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310 | } |
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311 | |
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312 | int |
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313 | cave_close(img *p_img) |
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314 | { |
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315 | int result = 1; |
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316 | /* let's do the twiglet traverse! */ |
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317 | twig *twiglet = rhizome->down; |
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318 | cave_write_base_source(p_img); |
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319 | scount(rhizome); |
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320 | save3d(p_img, twiglet); |
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321 | if (p_img->fh) { |
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322 | /* Write end of data marker */ |
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323 | putc(END_3D, p_img->fh); |
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324 | /* and finally write how many stations there are */ |
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325 | fseek(p_img->fh, 7L, SEEK_SET); |
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326 | put32((INT32_T)statcount, p_img->fh); |
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327 | if (ferror(p_img->fh)) result = 0; |
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328 | if (fclose(p_img->fh) == EOF) result = 0; |
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329 | } |
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330 | osfree(p_img); |
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331 | return result; |
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332 | } |
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333 | |
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334 | void |
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335 | create_twig(prefix *pre, const char *fname) |
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336 | { |
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337 | twig *twiglet; |
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338 | twig *lib; |
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339 | lib = get_twig(pre->up); /* get the active twig for parent's prefix */ |
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340 | twiglet = osnew(twig); |
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341 | twiglet->from = NULL; |
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342 | twiglet->to = pre; |
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343 | twiglet->sourceval=0; /* lowest priority */ |
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344 | pre->twig_link = twiglet; /* connect both ways */ |
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345 | twiglet->right = NULL; |
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346 | twiglet->drawings = twiglet->date = twiglet->tape = twiglet->instruments |
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347 | = NULL; |
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348 | twiglet->source = osstrdup(fname); |
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349 | if (lib) { |
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350 | twiglet->count = lib->count + 1; |
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351 | /* ie we are changing the global attachment update...*/ |
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352 | if (lib == limb) limb = twiglet; |
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353 | lib->right = twiglet; |
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354 | twiglet->up = lib->up; |
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355 | } else { |
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356 | twiglet->up = NULL; |
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357 | } |
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358 | lib = twiglet; |
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359 | twiglet = osnew(twig); |
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360 | twiglet->to = twiglet->from = NULL; |
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361 | twiglet->up = lib; |
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362 | twiglet->sourceval = 0; |
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363 | twiglet->drawings = twiglet->source = twiglet->instruments |
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364 | = twiglet->date = twiglet->tape = NULL; |
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365 | twiglet->down = twiglet->right = NULL; |
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366 | twiglet->count=0; |
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367 | lib->down = twiglet; |
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368 | } |
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369 | |
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370 | twig * |
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371 | get_twig(prefix *pre) |
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372 | { |
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373 | twig *temp; |
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374 | if (pre && pre->twig_link) { |
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375 | temp = pre->twig_link->down; |
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376 | if (temp) while (temp->right) temp = temp->right; |
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377 | return temp; |
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378 | } |
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379 | return NULL; |
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380 | } |
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381 | |
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382 | #endif |
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