[37] | 1 | /* |
---|
| 2 | |
---|
| 3 | Remove properties or elements from a PLY file. |
---|
| 4 | |
---|
| 5 | Greg Turk, August 1994 |
---|
| 6 | |
---|
| 7 | */ |
---|
| 8 | |
---|
| 9 | #include <stdlib.h> |
---|
| 10 | #include <stdio.h> |
---|
| 11 | #include <math.h> |
---|
| 12 | #include <malloc.h> |
---|
| 13 | #include <strings.h> |
---|
| 14 | #include <ply.h> |
---|
| 15 | |
---|
| 16 | #ifdef linux |
---|
| 17 | #include <string.h> |
---|
| 18 | #endif |
---|
| 19 | |
---|
| 20 | typedef struct OtherStruct { |
---|
| 21 | void *other_props; |
---|
| 22 | } OtherStruct; |
---|
| 23 | |
---|
| 24 | /*** the PLY object ***/ |
---|
| 25 | |
---|
| 26 | PlyOtherElems *other_elements = NULL; |
---|
| 27 | int nelems; |
---|
| 28 | char **elist; |
---|
| 29 | int file_type; |
---|
| 30 | int num_comments; |
---|
| 31 | char **comments; |
---|
| 32 | int num_obj_info; |
---|
| 33 | char **obj_info; |
---|
| 34 | PlyOtherProp **other_props; |
---|
| 35 | OtherStruct ***olist; |
---|
| 36 | int *elem_counts; |
---|
| 37 | |
---|
| 38 | |
---|
| 39 | /* list of properties to remove */ |
---|
| 40 | |
---|
| 41 | #define MAX 50 |
---|
| 42 | static char *prop_list[MAX]; |
---|
| 43 | static char *prop_elem_list[MAX]; |
---|
| 44 | static int prop_count = 0; |
---|
| 45 | |
---|
| 46 | /* list of elements to remove */ |
---|
| 47 | |
---|
| 48 | static char *elem_list[MAX]; |
---|
| 49 | static int elem_count = 0; |
---|
| 50 | |
---|
| 51 | void usage(char *progname); |
---|
| 52 | void write_file(); |
---|
| 53 | void read_file(FILE *); |
---|
| 54 | void remove_element(char *elem); |
---|
| 55 | void remove_property(PlyOtherProp *other, int index); |
---|
| 56 | FILE *parse_command_line(int argc, char *argv[]); |
---|
| 57 | void remove_stuff(); |
---|
| 58 | |
---|
| 59 | |
---|
| 60 | /****************************************************************************** |
---|
| 61 | Read in, process, and write out a PLY file. |
---|
| 62 | ******************************************************************************/ |
---|
| 63 | |
---|
| 64 | int |
---|
| 65 | main(int argc, char *argv[]) |
---|
| 66 | { |
---|
| 67 | int i,j; |
---|
| 68 | FILE *inFile; |
---|
| 69 | |
---|
| 70 | inFile = parse_command_line (argc, argv); |
---|
| 71 | |
---|
| 72 | read_file(inFile); |
---|
| 73 | |
---|
| 74 | remove_stuff(); |
---|
| 75 | |
---|
| 76 | write_file(); |
---|
| 77 | } |
---|
| 78 | |
---|
| 79 | |
---|
| 80 | /****************************************************************************** |
---|
| 81 | Remove an element from the list of elements in a PLY object. |
---|
| 82 | ******************************************************************************/ |
---|
| 83 | |
---|
| 84 | void |
---|
| 85 | remove_element(char *elem) |
---|
| 86 | { |
---|
| 87 | int i,j; |
---|
| 88 | |
---|
| 89 | for (i = 0; i < nelems; i++) |
---|
| 90 | if (equal_strings (elem, elist[i])) { |
---|
| 91 | for (j = i; j < nelems+1; j++) { |
---|
| 92 | elist[j] = elist[j+1]; |
---|
| 93 | olist[j] = olist[j+1]; |
---|
| 94 | other_props[j] = other_props[j+1]; |
---|
| 95 | elem_counts[j] = elem_counts[j+1]; |
---|
| 96 | } |
---|
| 97 | nelems--; |
---|
| 98 | return; |
---|
| 99 | } |
---|
| 100 | } |
---|
| 101 | |
---|
| 102 | |
---|
| 103 | /****************************************************************************** |
---|
| 104 | Remove a property from an other property description. |
---|
| 105 | ******************************************************************************/ |
---|
| 106 | |
---|
| 107 | void |
---|
| 108 | remove_property(PlyOtherProp *other, int index) |
---|
| 109 | { |
---|
| 110 | int i; |
---|
| 111 | |
---|
| 112 | for (i = index; i < other->nprops-1; i++) |
---|
| 113 | copy_property (other->props[i], other->props[i+1]); |
---|
| 114 | |
---|
| 115 | other->nprops--; |
---|
| 116 | } |
---|
| 117 | |
---|
| 118 | |
---|
| 119 | /****************************************************************************** |
---|
| 120 | Remove references to specified elements and properties. |
---|
| 121 | ******************************************************************************/ |
---|
| 122 | |
---|
| 123 | void |
---|
| 124 | remove_stuff() |
---|
| 125 | { |
---|
| 126 | int i,j,k; |
---|
| 127 | PlyOtherProp *other; |
---|
| 128 | int found_element; |
---|
| 129 | |
---|
| 130 | /* find and remove each element that is on the list for removal */ |
---|
| 131 | |
---|
| 132 | for (j = 0; j < elem_count; j++) { |
---|
| 133 | |
---|
| 134 | found_element = 0; |
---|
| 135 | |
---|
| 136 | for (i = 0; i < nelems; i++) |
---|
| 137 | if (equal_strings (elist[i], elem_list[j])) { |
---|
| 138 | /* if so, remove it */ |
---|
| 139 | remove_element (elem_list[j]); |
---|
| 140 | found_element = 1; |
---|
| 141 | break; |
---|
| 142 | } |
---|
| 143 | |
---|
| 144 | if (!found_element) { |
---|
| 145 | fprintf (stderr, "Can't find element '%s'\n", elem_list[j]); |
---|
| 146 | exit (-1); |
---|
| 147 | } |
---|
| 148 | } |
---|
| 149 | |
---|
| 150 | /* remove each specified property */ |
---|
| 151 | |
---|
| 152 | for (i = 0; i < prop_count; i++) { |
---|
| 153 | |
---|
| 154 | found_element = 0; |
---|
| 155 | |
---|
| 156 | for (j = 0; j < nelems; j++) { |
---|
| 157 | |
---|
| 158 | if (equal_strings (elist[j], prop_elem_list[i])) { |
---|
| 159 | |
---|
| 160 | found_element = 1; |
---|
| 161 | other = other_props[j]; |
---|
| 162 | |
---|
| 163 | for (k = 0; k < other->nprops; k++) { |
---|
| 164 | /* remove property by writing over it */ |
---|
| 165 | if (equal_strings (prop_list[i], other->props[k]->name)) { |
---|
| 166 | remove_property (other, k); |
---|
| 167 | if (other->nprops == 0) |
---|
| 168 | remove_element (prop_elem_list[i]); |
---|
| 169 | goto here; |
---|
| 170 | } |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | /* if we get here, we didn't find property */ |
---|
| 174 | fprintf (stderr, "Can't find property '%s.%s'\n", |
---|
| 175 | prop_elem_list[i], prop_list[i]); |
---|
| 176 | exit (-1); |
---|
| 177 | } |
---|
| 178 | here: ; /* for jumping out of loop */ |
---|
| 179 | } |
---|
| 180 | |
---|
| 181 | if (!found_element) { |
---|
| 182 | fprintf (stderr, "Can't find element '%s'\n", prop_elem_list[i]); |
---|
| 183 | exit (-1); |
---|
| 184 | } |
---|
| 185 | } |
---|
| 186 | } |
---|
| 187 | |
---|
| 188 | |
---|
| 189 | /****************************************************************************** |
---|
| 190 | Find from command line which properties and which elements are to be |
---|
| 191 | removed. |
---|
| 192 | ******************************************************************************/ |
---|
| 193 | |
---|
| 194 | FILE * |
---|
| 195 | parse_command_line(int argc, char *argv[]) |
---|
| 196 | { |
---|
| 197 | int i,j; |
---|
| 198 | char *elem; |
---|
| 199 | char *prop; |
---|
| 200 | int got_prop; |
---|
| 201 | int len; |
---|
| 202 | FILE *inFile = stdin; |
---|
| 203 | |
---|
| 204 | /* Check usage */ |
---|
| 205 | if (argc < 3) { |
---|
| 206 | usage(argv[0]); |
---|
| 207 | } |
---|
| 208 | |
---|
| 209 | /* First argument: The input file (or - for stdin) */ |
---|
| 210 | if (argv[1][0] == '-') { |
---|
| 211 | if (strlen(argv[1]) == 1) { |
---|
| 212 | inFile = stdin; |
---|
| 213 | } else { |
---|
| 214 | fprintf(stderr, "Error: unhandled argument: %s\n", argv[1]); |
---|
| 215 | usage(argv[0]); |
---|
| 216 | exit(-1); |
---|
| 217 | } |
---|
| 218 | } else { |
---|
| 219 | inFile = fopen(argv[1], "r"); |
---|
| 220 | if (inFile == NULL) { |
---|
| 221 | fprintf(stderr, "Error: Couldn't open input file %s\n", argv[1]); |
---|
| 222 | usage(argv[0]); |
---|
| 223 | exit(-1); |
---|
| 224 | } |
---|
| 225 | } |
---|
| 226 | |
---|
| 227 | |
---|
| 228 | /* Examine each argument and see if it can be split up into */ |
---|
| 229 | /* a dot-separated pair of element.property. If not, the */ |
---|
| 230 | /* whole argument is taken as an element name */ |
---|
| 231 | |
---|
| 232 | for (i = 2; i < argc; i++) { |
---|
| 233 | |
---|
| 234 | elem = strdup (argv[i]); |
---|
| 235 | len = strlen (elem); |
---|
| 236 | got_prop = 0; |
---|
| 237 | |
---|
| 238 | /* look for dot */ |
---|
| 239 | for (j = 0; j < len; j++) |
---|
| 240 | if (elem[j] == '.') { |
---|
| 241 | elem[j] = '\0'; |
---|
| 242 | prop = &(elem[j+1]); |
---|
| 243 | got_prop = 1; |
---|
| 244 | break; |
---|
| 245 | } |
---|
| 246 | |
---|
| 247 | if (got_prop) { |
---|
| 248 | prop_list[prop_count] = prop; |
---|
| 249 | prop_elem_list[prop_count] = elem; |
---|
| 250 | prop_count++; |
---|
| 251 | } |
---|
| 252 | else { |
---|
| 253 | elem_list[elem_count] = elem; |
---|
| 254 | elem_count++; |
---|
| 255 | } |
---|
| 256 | } |
---|
| 257 | return(inFile); |
---|
| 258 | } |
---|
| 259 | |
---|
| 260 | |
---|
| 261 | /****************************************************************************** |
---|
| 262 | Read in the PLY file from standard in. |
---|
| 263 | ******************************************************************************/ |
---|
| 264 | |
---|
| 265 | void |
---|
| 266 | read_file(FILE *inFile) |
---|
| 267 | { |
---|
| 268 | int i,j,k; |
---|
| 269 | PlyFile *ply; |
---|
| 270 | int nprops; |
---|
| 271 | int num_elems; |
---|
| 272 | PlyProperty **plist; |
---|
| 273 | char *elem_name; |
---|
| 274 | float version; |
---|
| 275 | |
---|
| 276 | ply = ply_read (inFile, &nelems, &elist); |
---|
| 277 | ply_get_info (ply, &version, &file_type); |
---|
| 278 | |
---|
| 279 | other_props = (PlyOtherProp **) malloc (sizeof (PlyOtherProp *) * nelems); |
---|
| 280 | olist = (OtherStruct ***) malloc (sizeof (OtherStruct **) * nelems); |
---|
| 281 | elem_counts = (int *) malloc (sizeof (int) * nelems); |
---|
| 282 | |
---|
| 283 | for (i = 0; i < nelems; i++) { |
---|
| 284 | |
---|
| 285 | /* get the description of the element */ |
---|
| 286 | elem_name = elist[i]; |
---|
| 287 | plist = ply_get_element_description (ply, elem_name, &num_elems, &nprops); |
---|
| 288 | elem_counts[i] = num_elems; |
---|
| 289 | |
---|
| 290 | /* create a list of structures to hold all the elements */ |
---|
| 291 | olist[i] = (OtherStruct **) malloc (sizeof (OtherStruct *) * num_elems); |
---|
| 292 | |
---|
| 293 | /* set up for getting the elements */ |
---|
| 294 | |
---|
| 295 | other_props[i] = ply_get_other_properties (ply, elem_name, |
---|
| 296 | offsetof(OtherStruct,other_props)); |
---|
| 297 | |
---|
| 298 | /* grab all the individual elements */ |
---|
| 299 | for (j = 0; j < num_elems; j++) { |
---|
| 300 | olist[i][j] = (OtherStruct *) malloc (sizeof (OtherStruct)); |
---|
| 301 | ply_get_element (ply, (void *) olist[i][j]); |
---|
| 302 | } |
---|
| 303 | } |
---|
| 304 | |
---|
| 305 | comments = ply_get_comments (ply, &num_comments); |
---|
| 306 | obj_info = ply_get_obj_info (ply, &num_obj_info); |
---|
| 307 | |
---|
| 308 | ply_close (ply); |
---|
| 309 | } |
---|
| 310 | |
---|
| 311 | |
---|
| 312 | /****************************************************************************** |
---|
| 313 | Write out the PLY file to standard out. |
---|
| 314 | ******************************************************************************/ |
---|
| 315 | |
---|
| 316 | void |
---|
| 317 | write_file() |
---|
| 318 | { |
---|
| 319 | int i,j,k; |
---|
| 320 | PlyFile *ply; |
---|
| 321 | int num_elems; |
---|
| 322 | char *elem_name; |
---|
| 323 | |
---|
| 324 | ply = ply_write (stdout, nelems, elist, file_type); |
---|
| 325 | |
---|
| 326 | /* describe what properties go into the vertex and face elements */ |
---|
| 327 | |
---|
| 328 | for (i = 0; i < nelems; i++) { |
---|
| 329 | ply_element_count (ply, elist[i], elem_counts[i]); |
---|
| 330 | ply_describe_other_properties (ply, other_props[i], |
---|
| 331 | offsetof(OtherStruct,other_props)); |
---|
| 332 | } |
---|
| 333 | |
---|
| 334 | for (i = 0; i < num_comments; i++) |
---|
| 335 | ply_put_comment (ply, comments[i]); |
---|
| 336 | |
---|
| 337 | for (i = 0; i < num_obj_info; i++) |
---|
| 338 | ply_put_obj_info (ply, obj_info[i]); |
---|
| 339 | |
---|
| 340 | ply_header_complete (ply); |
---|
| 341 | |
---|
| 342 | /* set up and write the elements */ |
---|
| 343 | |
---|
| 344 | for (i = 0; i < nelems; i++) { |
---|
| 345 | /* write out elements */ |
---|
| 346 | ply_put_element_setup (ply, elist[i]); |
---|
| 347 | for (j = 0; j < elem_counts[i]; j++) |
---|
| 348 | ply_put_element (ply, (void *) olist[i][j]); |
---|
| 349 | } |
---|
| 350 | |
---|
| 351 | |
---|
| 352 | /* close the PLY file */ |
---|
| 353 | ply_close (ply); |
---|
| 354 | } |
---|
| 355 | |
---|
| 356 | /****************************************************************************** |
---|
| 357 | Print out usage information. |
---|
| 358 | ******************************************************************************/ |
---|
| 359 | |
---|
| 360 | void |
---|
| 361 | usage(char *progname) |
---|
| 362 | { |
---|
| 363 | fprintf (stderr, "usage: %s [in.ply] [element1] ... [elementN] > out.ply\n", |
---|
| 364 | progname); |
---|
| 365 | fprintf (stderr, " or: %s - [element1] ... [elementN] < in.ply " |
---|
| 366 | "> out.ply\n", progname); |
---|
| 367 | fprintf (stderr, "\n"); |
---|
| 368 | fprintf (stderr, "This program removes elements from a ply file.\n"); |
---|
| 369 | fprintf (stderr, "Or you can remove a property from an element.\n"); |
---|
| 370 | fprintf (stderr, "For example: %s - face vertex.z < x.ply > y.ply\n", |
---|
| 371 | progname); |
---|
| 372 | fprintf (stderr, "will remove faces and z components of vertices.\n"); |
---|
| 373 | fprintf (stderr, "\n"); |
---|
| 374 | exit(-1); |
---|
| 375 | } |
---|
| 376 | |
---|