not ready for prime time

.gitignore

@@ -9,6 +9,7 @@ toto
 
 tools/*.obj
 ! tools/minimal.obj
+! tools/cube.obj
 tools/read_obj
 tools/*.xyz
 tools/*.asc

Makefile

@@ -10,7 +10,7 @@
 
 CC = gcc
 
-OPT = -Wall -g -pg  -DDEBUG_LEVEL=0 -DMUST_ABORT=0
+OPT = -Wall -g -DDEBUG_LEVEL=0 -DMUST_ABORT=0
 
 libbubulles.a:	bubulles.o edges.o
 	ar r $@ $?

bubulles.c

@@ -121,18 +121,18 @@ return ( &where->bbs[idx] );
 int print_bublist_desc(BBList *bbl, int opts)
 {
 
-printf("------- bblist at %p\n", bbl);
+fprintf(stderr, "------- bblist at %p\n", bbl);
-printf("\tname \t'%s'\n", bbl->name);
+fprintf(stderr, "\tname \t'%s'\n", bbl->name);
 
-printf("\tsize\t%6d\n\tfidx\t%6d\n", bbl->size, bbl->fidx);
+fprintf(stderr, "\tsize\t%6d\n\tfidx\t%6d\n", bbl->size, bbl->fidx);
 if (opts & 0x01) {
-	printf("\txyz\t%f %f %f\n",
+	fprintf(stderr, "\txyz\t%f %f %f\n",
 		bbl->position.x, bbl->position.y, bbl->position.z);
 	}
-printf("\tflags\t0x%08lX\n", bbl->flags);
+fprintf(stderr, "\tflags\t0x%08lX\n", bbl->flags);
-printf("\tarray\t%p\n", bbl->bbs);
+fprintf(stderr, "\tarray\t%p\n", bbl->bbs);
 
-puts("");	fflush(stdout);
+fflush(stderr);
 
 return 0;
 }

edges.c

@@ -65,6 +65,26 @@ return 0;
 }
 /* --------------------------------------------------------------------- */
 /*
+ *	with this func, you can search for duplicates, but 
+ *	it is going to be SLOW with huges object.
+ */
+static int is_edge_in_list(EdgeList *list, int p0, int p1)
+{
+int		idx;
+
+for (idx=0; idx < list->fidx; idx++) {
+	if (	(list->edges[idx].A == p0) &&
+		(list->edges[idx].B == p1) )		return 1;
+
+	if (	(list->edges[idx].A == p1) &&
+		(list->edges[idx].B == p0) )		return 2;
+	}
+
+return 0;		/* NOT FOUND */
+}
+/* --------------------------------------------------------------------- */
+/*
+ *
  *	we have two functions for adding an edge to a list
  *	the first one add unconditionnaly the edge to the
  *	(non full) list...
@@ -88,6 +108,7 @@ list->edges[list->fidx].B = p1;
 list->fidx ++;
 return 0;
 }
+
 /*
  *	and the second only insert an edge if it was missing
  *	from the currently know list.
@@ -114,24 +135,6 @@ if ( ! is_edge_in_list(list, p0, p1) ) {
 return 0;
 }
 /* --------------------------------------------------------------------- */
-/*
- *	with this func, you can search for duplicates
- */
-int is_edge_in_list(EdgeList *list, int p0, int p1)
-{
-int		idx;
-
-for (idx=0; idx < list->fidx; idx++) {
-	if (	(list->edges[idx].A == p0) &&
-		(list->edges[idx].B == p1) )		return 1;
-
-	if (	(list->edges[idx].A == p1) &&
-		(list->edges[idx].B == p0) )		return 2;
-	}
-
-return 0;		/* NOT FOUND */
-}
-/* --------------------------------------------------------------------- */
 int  print_edgelist_desc(EdgeList *list, int k)
 {
 
@@ -147,12 +150,43 @@ fprintf(stderr, "\tsize                %8d\n",      list->size);
 fprintf(stderr, "\tnext free           %8d\n",      list->fidx);
 fprintf(stderr, "\tmagic              0x%08lX\n",   list->magic);
 
+return 0;
+}
+/* --------------------------------------------------------------------- */
+/*
+ *	/!\	the output format is subject to changes in
+ *		a near futur.
+ */
+int  edges_to_data(char *fname, EdgeList *list, int k)
+{
+FILE		*fp;
+int		idx, foo;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( '%s'  %p %d )\n", __func__, fname, list, k);
+#endif
+
+if (NULL==(fp=fopen(fname, "w"))) {
+	perror(fname);
+	return -1;
+	}
+for (idx=0; idx<list->fidx; idx++) {
+	foo = fprintf(fp, "%d %d\n", list->edges[idx].A, list->edges[idx].B);
+	/*
+	 * error check
+	 */
+	if (foo < 0) {
+		perror(fname);
+		exit(1);		/* be violent ! */
+		}
+	}
+fclose(fp);
 return 0;
 }
 /* --------------------------------------------------------------------- */
 int  print_the_edges(FILE *fp, EdgeList *list, int k)
 {
-int		foo;
+int		idx;
 
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( %p %d )\n", __func__, list, k);
@@ -165,9 +199,9 @@ if (k) {
 
 fprintf(stderr, "    list.fidx = %d\n", list->fidx);
 
-for (foo=0; foo<list->fidx; foo++) {
+for (idx=0; idx<list->fidx; idx++) {
-	fprintf(fp, "%6d\t\t%5d %5d\n", foo,
+	fprintf(fp, "%6d\t\t%5d %5d\n", idx,
-			list->edges[foo].A, list->edges[foo].B);
+			list->edges[idx].A, list->edges[idx].B);
 	}
 
 return -1;

edges.h

@@ -1,13 +1,15 @@
 /*
  *		edges.h
  *	a part of libbubulle from tTh
+ *
+ *		https://git.tetalab.org/tTh/libbubulle
  */
 
 /* --------------------------------------------------------------------- */
 
 typedef struct {
 	int		A, B;
-	short		burz;
+	short		burz;			/* for what usage ??? */
 	} AnEdge;
 
 typedef struct {
@@ -26,9 +28,10 @@ int 		free_edgelist(EdgeList *list, int k);
 int 		push_an_edge(EdgeList *list, int p0, int p1);
 int 		push_a_missing_edge(EdgeList *list, int p0, int p1);
 
-int 		is_edge_in_list(EdgeList *list, int p0, int p1);
+// int 		is_edge_in_list(EdgeList *list, int p0, int p1);
 
 int  		print_edgelist_desc(EdgeList *list, int k);
+int 		edges_to_data(char *fname, EdgeList *list, int k);
 int  		print_the_edges(FILE *file, EdgeList *list, int k);
 
 /* --------------------------------------------------------------------- */

tools/.gitignore

@@ -1,4 +1,7 @@
 
+essai_faces
+read_obj
+
 *.vertices
 *.edges
 

tools/Makefile

@@ -1,10 +1,13 @@
 
 BBFUNCS = ../libbubulles.a 
 
-OPT = -Wall -g -pg -DDEBUG_LEVEL=0 -DMUST_ABORT=0
+OPT = -Wall -g -DDEBUG_LEVEL=0 -DMUST_ABORT=0
 
 read_obj:	read_obj.c Makefile importobj.o $(BBFUNCS)
 	gcc $(OPT)  $<  importobj.o $(BBFUNCS) -o $@
 
 importobj.o:	importobj.c ../bubulles.h Makefile
 	$(CC) $(OPT) -c $< 
+
+essai_faces:	essai_faces.c Makefile
+	$(CC) $(OPT)  $< -o $@

tools/cube.obj

@@ -0,0 +1,49 @@
+# cube.obj
+#
+ 
+o cube
+ 
+v  0.0  0.0  0.0
+v  0.0  0.0  1.0
+v  0.0  1.0  0.0
+v  0.0  1.0  1.0
+v  1.0  0.0  0.0
+v  1.0  0.0  1.0
+v  1.0  1.0  0.0
+v  1.0  1.0  1.0
+ 
+vt 0.25 0.0
+vt 0.5  0.0
+vt 0    0.25
+vt 0.25 0.25
+vt 0.5  0.25
+vt 0.75 0.25
+vt 0.0  0.5
+vt 0.25 0.5
+vt 0.5  0.5
+vt 0.75 0.5
+vt 0.25 0.75
+vt 0.5  0.75
+vt 0.25 1.0
+vt 0.5  1.0
+
+vn  0.0  0.0  1.0
+vn  0.0  0.0 -1.0
+vn  0.0  1.0  0.0
+vn  0.0 -1.0  0.0
+vn  1.0  0.0  0.0
+vn -1.0  0.0  0.0
+
+f  1/11/2  7/14/2  5/12/2
+f  1/11/2  3/13/2  7/14/2 
+f  1/7/6  4/4/6  3/3/6 
+f  1/7/6  2/8/6  4/4/6 
+f  3/1/3  8/5/3  7/2/3 
+f  3/1/3  4/4/3  8/5/3 
+f  5/10/5  7/6/5  8/5/5 
+f  5/10/5  8/5/5  6/9/5 
+f  1/11/4  5/12/4  6/9/4 
+f  1/11/4  6/9/4  2/8/4 
+f  2/8/1  6/9/1  8/5/1 
+f  2/8/1  8/5/1  4/4/1 
+

tools/essai_faces.c

@@ -0,0 +1,44 @@
+/*
+ */
+
+#include  <stdio.h>
+#include  <string.h>
+#include  <stdlib.h>
+
+int essai_lecture_face(char *str)
+{
+char		*buffer, *ptr;
+int		bar;
+int		A, B, C;
+
+printf("-------- '%s'\n", str);
+buffer = ptr = strdup(str);
+for (bar = 0;;) {
+	ptr = strtok(ptr, " \t");
+	if (NULL != ptr) {
+		printf("\t%2d     '%s'\n", bar, ptr);
+		ptr = NULL;
+		bar++;
+		}
+	else break;
+	}
+/*
+ * so, here, we know the number of thing to decipher
+ */
+
+free(buffer);
+printf(" ->  %d\n", bar);
+
+return 0;
+}
+
+int main(int argc, char *argv[])
+{
+int		foo, bar;
+
+foo = essai_lecture_face("3 14 159");
+foo = essai_lecture_face("2 4 6 8");
+foo = essai_lecture_face("0/10 1/11 2/12");
+
+return 0;
+}

tools/importobj.c

@@ -7,6 +7,7 @@
 #include  <stdio.h>
 #include  <stdlib.h>
 #include  <string.h>
+#include  <unistd.h>
 
 #include  "../bubulles.h"
 #include  "../edges.h"
@@ -27,7 +28,8 @@ typedef struct	{
 	int		id;
 	} Tokens;
 
-enum token_id { T_comment=1, T_vertice, T_group, T_face, T_vt };
+enum token_id { T_comment=1, T_vertice, T_group, T_face, T_vt, T_vn,
+		T_line, T_object, T_smoothing, T_usemtl, T_mtllib };
 
 Tokens TokenList[] = {
 	{  "#",		T_comment	},
@@ -35,6 +37,12 @@ Tokens TokenList[] = {
 	{  "g",		T_group		},	// to be verified !
 	{  "f",		T_face		},
 	{  "vt",	T_vt		},	// c'est quoi ce truc ?
+	{  "vn",	T_vt		},	// c'est quoi ce truc ?
+	{  "l",		T_line		},
+	{  "o",		T_object	},
+	{  "s",		T_smoothing 	},
+	{  "usemtl",	T_usemtl	},
+	{  "mtllib",	T_mtllib	},
 	{  NULL,	0		}
 	};
 
@@ -76,45 +84,62 @@ if (3 == foo) {
 return foo;
 }
 /* --------------------------------------------------------------------- */
-/* new Mon 27 Mar 2023 12:08:18 AM CEST */
+/* new Mon 27 Mar 2023 12:08:18 AM CEST
+ *
+ *	mmmm... complex thing to do...
+ *
+ */
 int parse_face(char *cptr, int phy)
 {
 int		ix, foo;
-int		fa, fb;
+int		pts[3];
 
 #if DEBUG_LEVEL
 fprintf(stderr, ">>> %s ( '%s' %d )\n", __func__, cptr, phy);
 #endif
 
+#if (0)
+fprintf(stderr, "parse_face");
+for (foo=0; foo<16; foo++) {
+	fprintf(stderr, " %02X", ((unsigned char *)cptr)[foo]);
+	}
+fprintf(stderr, "\n");
+#endif
+
 for (ix=0; ix<3; ix++) {
 	cptr = strtok(NULL, " ");
 	if (NULL == cptr) {
 		fprintf(stderr, "incomplete face in %s\n", __func__);
 		return -4;
 		}
-	if (2 != sscanf(cptr, "%d/%d", &fa, &fb)) {
+	if (1 != sscanf(cptr, "%d", &pts[ix])) {
 		fprintf(stderr, "%s: err sscanf\n", __func__);
 		exit(1);
 		return -3;
 		}
-	// XXX fprintf(stderr, "  %d  got %d %d\n", ix, fa, fb);
-
-	/*
-	 * yes, i've found 0-lenght edges, wtf ?
-	 */
-	if (fa == fb)	{
-		// fprintf(stderr, "'%s' dublicate\n", cptr);
-		continue;
 	}
 
-	foo = push_a_missing_edge(edges, fa, fb);
+/** check the freshly read datas **/
+if (  pts[0]==pts[1] || pts[0]==pts[2] || pts[2]==pts[1] ) {
+	fprintf(stderr, "%s: degerated face ( %d %d %d )\n", __func__,
+				pts[0], pts[1], pts[2]);
+	sleep(5);
+	}
+
+foo = push_a_missing_edge(edges, pts[0], pts[1]);
 if (foo) {
 	fprintf(stderr, "%s: disaster #%d\n", __func__, foo);
-#if MUST_ABORT		
-		fflush(stderr), abort();
-#endif
 	return -2;
 	}
+foo = push_a_missing_edge(edges, pts[1], pts[2]);
+if (foo) {
+	fprintf(stderr, "%s: disaster #%d\n", __func__, foo);
+	return -2;
+	}
+foo = push_a_missing_edge(edges, pts[2], pts[0]);
+if (foo) {
+	fprintf(stderr, "%s: disaster #%d\n", __func__, foo);
+	return -2;
 	}
 
 #if DEBUG_LEVEL
@@ -128,7 +153,7 @@ int try_to_read_an_OBJ_file(char *infname, char *file_vert, char *file_edges,
 				int notused)
 {
 FILE		*fpin;
-char		line[LINE_SZ+1], *cptr;
+char		line[LINE_SZ+1], *cptr, *token;
 float		x, y, z;
 int		foo, nbre, tokenid;
 Bubulle         bubulle;
@@ -143,14 +168,14 @@ if (NULL==(fpin=fopen(infname, "r"))) {
 	exit(1);
 	}
 
-bublist = alloc_bubulles(infname, 500000, 0);
+bublist = alloc_bubulles(infname, 200000, 0);
 if (NULL==bublist) {
         fprintf(stderr, "in %s, no mem for bubls, aborting...\n", __func__);
         abort();
         }
 print_bublist_desc(bublist, 0);
 
-edges = alloc_edgelist("krkrkr", 200000, 0);
+edges = alloc_edgelist("krkrkr", 400000, 0);
 if (NULL==edges) {
         fprintf(stderr, "no mem for edges in %s, aborting...\n", __func__);
         abort();
@@ -173,9 +198,11 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 
 	cptr = strtok(line, " ");
 	if (NULL == cptr) {
-		fprintf(stderr, "no token ?\n");
+		/* this is an empty line */
+		// fprintf(stderr, "no token ?\n");
 		continue;
 		}
+	token = cptr;
 	tokenid = type_of_the_line(cptr);
 	if (verbosity > 1)
 		fprintf(stderr, "token '%s' --> %d\n", cptr, tokenid);
@@ -202,21 +229,43 @@ while(NULL!=(cptr=fgets(line, LINE_SZ, fpin))) {
 				abort();
 				}
 			break;
+		case T_face:
+			/* experimental code here */
+			foo = parse_face(cptr, 0);
+			if (foo) {
+				 fprintf(stderr, "  '%s' parse face -> %d\n",
+							cptr, foo);
+				exit(1);
+				}
+			break;
 
+		case T_object:
+			cptr = strtok(NULL, " ");
+			fprintf(stderr, "\tObject:    %s\n", cptr);
+			break;
 		case T_group:
 			cptr = strtok(NULL, " ");
 			fprintf(stderr, "\tGroup:     %s\n", cptr);
 			break;
+		case T_usemtl:
+			cptr = strtok(NULL, " ");
+			fprintf(stderr, "\tUsemtl:    %s\n", cptr);
+			break;
+		case T_mtllib:
+			cptr = strtok(NULL, " ");
+			fprintf(stderr, "\tMtllib:    %s\n", cptr);
+			break;
 
-		case T_face:
+		case T_line:
-			foo = parse_face(cptr, 0);
+			break;
-			if (foo)  fprintf(stderr, "  '%s' parse face -> %d\n",
+		case T_smoothing:
-							cptr, foo);
+			break;
+		case T_vt:
 			break;
 			 
 		default:
-			// fprintf(stderr, "\ttoken %d ?\n", tokenid);
+			fprintf(stderr, "token %s -> %d ?\n", token, tokenid);
-			continue;		/* wtf ? */
+			break;
 		}
 
 	nbre++;
@@ -234,7 +283,7 @@ bubulles_to_data(file_vert, NULL, bublist, 0);
 free_bubulles(bublist, 0);
 
 print_edgelist_desc(edges, 0);
-print_the_edges(stdout, edges, 0);
+edges_to_data(file_edges, edges, 0);
 free_edgelist(edges, 0);
 
 return 0;

tools/minimal.obj

@@ -1,7 +1,7 @@
-g minimal
+o minimal
 v 0 0 0
 v 1 0 0
 v 0 1 0
 v 0 0 1
-f 1/2, 2/3, 3/1
+f 1/2 2/3 3/1
-f 0/1, 0/1, 0/2
+f 0/1 0/1 0/2

tools/read_obj.c

@@ -20,15 +20,17 @@ int main(int argc, char *argv[])
 int		foo;
 char		*fname;		/* see manpage basename(3) */
 
+fprintf(stderr, "\n### READ_OBJ         %s %s\n\n", __DATE__, __TIME__);
+
 if (2 != argc) {
 	bubulles_version(1);
 	exit(0);
 	}
 
-verbosity = 0;
+verbosity = 1;
 
 fname = basename(argv[1]);
-fprintf (stderr, "input fname is '%s'\n", fname);
+fprintf (stderr, "input file name is '%s'\n", fname);
 
 foo = try_to_read_an_OBJ_file(argv[1], "bulles.vertices", "bulles.edges", 0);
 fprintf(stderr, "try to read '%s' -> %d\n", argv [1], foo);