152 lines
3.0 KiB
C
152 lines
3.0 KiB
C
/*
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LIBBUBULLES
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some functions for importing bubulles from dot-OBJ files.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "bubulles.h"
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extern int verbosity;
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/* --------------------------------------------------------------------- */
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#define LINE_SZ 666
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/* --------------------------------------------------------------------- */
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typedef struct {
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char *token;
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int id;
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} Tokens;
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enum token_id { T_comment=1, T_vertice };
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Tokens TokenList[] = {
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{ "#", T_comment },
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{ "v", T_vertice },
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{ NULL, 0 }
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};
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static int type_of_the_line(char *text)
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{
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Tokens *token;
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int id;
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#if DEBUG_LEVEL
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fprintf(stderr, "%s is searching '%s'\n", __func__, text);
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#endif
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for (token=TokenList; token->token; token++) {
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// fprintf(stderr, " %5s -> %d\n", token->token, token->id);
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if (!strcmp(token->token, text)) {
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return token->id;
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}
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}
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return -1;
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}
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/* --------------------------------------------------------------------- */
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static int parse_vertice(char *cptr, float *px, float *py, float *pz)
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{
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float x, y, z;
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int foo;
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foo = 0;
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cptr = strtok(NULL, " ");
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foo += sscanf(cptr, "%f", &x);
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cptr = strtok(NULL, " ");
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foo += sscanf(cptr, "%f", &y);
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cptr = strtok(NULL, " ");
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foo += sscanf(cptr, "%f", &z);
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if (3 == foo) {
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*px = x; *py = y; *pz = z;
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}
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return foo;
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}
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/* --------------------------------------------------------------------- */
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int try_to_read_an_OBJ_file(char *fname, int notused)
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{
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FILE *fpin;
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char line[LINE_SZ+1], *cptr;
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float x, y, z;
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int foo, nbre, tokenid;
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BBList *bublist;
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Bubulle bubulle;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, fname, notused);
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#endif
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if (NULL==(fpin=fopen(fname, "r"))) {
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perror(fname);
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exit(1);
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}
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bublist = alloc_bubulles(fname, 1000, 0);
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if (NULL==bublist) {
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fprintf(stderr, "err in %s, aborting...\n", __func__);
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abort();
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}
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print_bublist_desc(bublist, 0);
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nbre = 0;
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while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
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if ('\n' != line[strlen(line)-1]) {
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fprintf(stderr, "%s: short read, exiting...\n", __func__);
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return -2;
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}
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line[strlen(line)-1] = '\0'; /* kill the newline */
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if (verbosity>1) fprintf(stderr, "line read ===%s===\n", line);
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cptr = strtok(line, " ");
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if (NULL == cptr) {
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fprintf(stderr, "no token ?\n");
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continue;
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}
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tokenid = type_of_the_line(cptr);
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fprintf(stderr, "tok '%s' --> %d\n", cptr, tokenid);
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memset(&bubulle, 0, sizeof(Bubulle));
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switch (tokenid) {
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case T_comment:
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/* do nothing */
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break;
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case T_vertice:
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foo = parse_vertice(cptr, &x, &y, &z);
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bubulle.p.x = x;
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bubulle.p.y = y;
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bubulle.p.z = z;
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if (verbosity > 1) niceprint_bubulle(&bubulle, 0);
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break;
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default:
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continue; /* wtf ? */
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}
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foo = push_bubulle(bublist, &bubulle);
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if (foo) {
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fprintf(stderr, "%s: err %d on push\n", __func__, foo);
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break;
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}
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nbre++;
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}
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fclose(fpin);
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if(verbosity) {
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fprintf(stderr, "%s : %d vertices loaded\n", __func__, nbre);
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}
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bubulles_to_data("xyz", NULL, bublist, 0);
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return 0;
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}
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/* --------------------------------------------------------------------- */
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