void ofxGtsSurface::setup(string filename) {
FILE * fptr;
GtsFile * fp;
string filePath = ofToDataPath(filename);
/* open first file */
if ((fptr = fopen (filePath.c_str(), "rt")) == NULL) {
ofLog(OF_LOG_ERROR, "Cannot open file: " + filePath);
return;
}
/* reads in first surface file */
surface = gts_surface_new(GTS_SURFACE_CLASS(gts_surface_class()),
GTS_FACE_CLASS(gts_nface_class()),
GTS_EDGE_CLASS(gts_nedge_class()),
GTS_VERTEX_CLASS(gts_nvertex_class()));
fp = gts_file_new(fptr);
if (gts_surface_read (surface, fp)) {
ofLog(OF_LOG_ERROR, filePath + " is not a valid GTS surface file");
loaded = false;
gts_object_destroy(GTS_OBJECT(surface));
} else {
ofLog(OF_LOG_NOTICE, "Gts surface file read: " + filePath);
loaded = true;
}
gts_file_destroy (fp);
fclose (fptr);
}
extern field_t* field_read_gfs(const char* file)
{
int argc = 0;
gfs_init(&argc,NULL);
FILE *st = fopen(file,"r");
if (!st)
{
fprintf(stderr,"failed to open %s\n",file);
return NULL;
}
GtsFile *fp = gts_file_new(st);
GfsSimulation *sim = gfs_simulation_read(fp);
if (!sim)
{
fprintf(stderr,
"file %s not a valid simulation file\n"
"line %d:%d: %s\n",
file,
fp->line,
fp->pos,
fp->error);
return NULL;
}
gts_file_destroy(fp);
fclose(st);
GfsDomain *gdom = GFS_DOMAIN(sim);
/* find the bounding box */
bbox_t *bb = NULL;
gfs_domain_cell_traverse(gdom,
FTT_PRE_ORDER,
FTT_TRAVERSE_NON_LEAFS,
0,
(FttCellTraverseFunc)ftt_bbox,
&bb);
if (!bb)
{
fprintf(stderr,"failed to determine bounding box\n");
return NULL;
}
#ifdef FRG_DEBUG
fprintf(stdout,
"%g %g %g %g\n",
bb->x.min,
bb->x.max,
bb->y.min,
bb->y.max);
#endif
/* tree depth and discretisation size */
int
depth = gfs_domain_depth(gdom),
nw = (int)(POW2(depth)*bbox_width(*bb)),
nh = (int)(POW2(depth)*bbox_height(*bb));
/* shave bbox for node-aligned rather than pixel */
double shave = bbox_width(*bb)/(2.0*nw);
bb->x.min += shave;
bb->x.max -= shave;
bb->y.min += shave;
bb->y.max -= shave;
/* create & intialise meshes */
bilinear_t* B[2];
int i;
for (i=0 ; i<2 ; i++)
{
if ((B[i] = bilinear_new()) == NULL) return NULL;
if (bilinear_dimension(nw,nh,*bb,B[i]) != ERROR_OK) return NULL;
}
ftts_t ftts;
ftts.B = B;
ftts.depth = depth;
if ((ftts.u = gfs_variable_from_name(gdom->variables,"U")) == NULL)
{
fprintf(stderr,"no variable U\n");
return NULL;
}
if ((ftts.v = gfs_variable_from_name(gdom->variables,"V")) == NULL)
{
fprintf(stderr,"no variable V\n");
return NULL;
}
gfs_domain_cell_traverse(gdom,
FTT_PRE_ORDER,
FTT_TRAVERSE_LEAFS,
-1,
(FttCellTraverseFunc)ftt_sample,
&ftts);
/* clean up */
free(bb);
gts_object_destroy(GTS_OBJECT(sim));
/* results */
field_t* F = malloc(sizeof(field_t));
if (!F) return NULL;
F->u = B[0];
F->v = B[1];
F->k = NULL;
return F;
}
/* stripe - Turns the input surface into triangle strips and outputs a
Geomview representation of the result. */
int main (int argc, char * argv[])
{
GtsSurface * s;
GSList * strips = NULL, * i;
gboolean verbose = FALSE;
int c = 0;
GtsFile * fp;
/* parse options using getopt */
while (c != EOF) {
#ifdef HAVE_GETOPT_LONG
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'}
};
int option_index = 0;
switch ((c = getopt_long (argc, argv, "hv",
long_options, &option_index))) {
#else /* not HAVE_GETOPT_LONG */
switch ((c = getopt (argc, argv, "hv"))) {
#endif /* not HAVE_GETOPT_LONG */
case 'v': /* verbose */
verbose = TRUE;
break;
case 'h': /* help */
fprintf (stderr,
"Usage: stripe [OPTION] < FILE\n"
"Turns the input surface into triangle strips and outputs a\n"
"Geomview representation of the result.\n"
"\n"
" -v --verbose print statistics about the surface and strips\n"
" -h --help display this help and exit\n"
"\n"
"Report bugs to %s\n",
GTS_MAINTAINER);
return 0; /* success */
break;
case '?': /* wrong options */
fprintf (stderr, "Try `stripe --help' for more information.\n");
return 1; /* failure */
}
}
/* read surface in */
s = gts_surface_new (gts_surface_class (),
gts_face_class (),
gts_edge_class (),
gts_vertex_class ());
fp = gts_file_new (stdin);
if (gts_surface_read (s, fp)) {
fputs ("stripe: file on standard input is not a valid GTS file\n",
stderr);
fprintf (stderr, "stdin:%d:%d: %s\n", fp->line, fp->pos, fp->error);
return 1; /* failure */
}
gts_file_destroy (fp);
if (verbose)
gts_surface_print_stats (s, stderr);
strips = gts_surface_strip (s);
/* if verbose on print stats */
if (verbose) {
GtsRange l;
gts_range_init (&l);
i = strips;
while (i) {
gts_range_add_value (&l, g_slist_length (i->data));
i = i->next;
}
gts_range_update (&l);
fprintf (stderr, "# Strips: %d\n# length : ", l.n);
gts_range_print (&l, stderr);
fputc ('\n', stderr);
}
puts ("LIST {\n");
i = strips;
while (i) {
GList * j = i->data;
GtsTriangle * oldt = NULL;
GtsColor c;
c.r = rand ()/(gdouble) RAND_MAX;
c.g = rand ()/(gdouble) RAND_MAX;
c.b = rand ()/(gdouble) RAND_MAX;
while (j) {
GtsTriangle * t = j->data;
GtsPoint
* p1 = GTS_POINT (GTS_SEGMENT (t->e1)->v1),
* p2 = GTS_POINT (GTS_SEGMENT (t->e1)->v2),
* p3 = GTS_POINT (gts_triangle_vertex (t));
printf ("OFF 3 1 3\n%g %g %g\n%g %g %g\n%g %g %g\n3 0 1 2 %g %g %g\n",
p1->x, p1->y, p1->z,
p2->x, p2->y, p2->z,
p3->x, p3->y, p3->z,
c.r, c.g, c.b);
if (oldt) {
GtsSegment * cs = GTS_SEGMENT (gts_triangles_common_edge (t, oldt));
GtsPoint
* op1 = GTS_POINT (GTS_SEGMENT (oldt->e1)->v1),
* op2 = GTS_POINT (GTS_SEGMENT (oldt->e1)->v2),
* op3 = GTS_POINT (gts_triangle_vertex (oldt));
printf ("VECT 1 3 0 3 0 %g %g %g %g %g %g %g %g %g\n",
(op1->x + op2->x + op3->x)/3.,
(op1->y + op2->y + op3->y)/3.,
(op1->z + op2->z + op3->z)/3.,
(GTS_POINT (cs->v1)->x + GTS_POINT (cs->v2)->x)/2.,
(GTS_POINT (cs->v1)->y + GTS_POINT (cs->v2)->y)/2.,
(GTS_POINT (cs->v1)->z + GTS_POINT (cs->v2)->z)/2.,
(p1->x + p2->x + p3->x)/3.,
(p1->y + p2->y + p3->y)/3.,
(p1->z + p2->z + p3->z)/3.);
}
oldt = t;
j = j->next;
}
i = i->next;
}
puts ("}\n");
return 0; /* success */
}
/* inside - check if points are inside a surface */
int main (int argc, char * argv[])
{
GtsSurface * s1;
GNode * tree1;
GtsPoint P;
FILE * fptr;
GtsFile * fp;
int c = 0, cnt = 0;
double x,y,z;
gboolean verbose = FALSE;
gchar * file1, * file2;
gboolean is_open1, is_inside;
if (!setlocale (LC_ALL, "POSIX"))
g_warning ("cannot set locale to POSIX");
/* parse options using getopt */
while (c != EOF) {
#ifdef HAVE_GETOPT_LONG
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'}
};
int option_index = 0;
switch ((c = getopt_long (argc, argv, "shv",
long_options, &option_index))) {
#else /* not HAVE_GETOPT_LONG */
switch ((c = getopt (argc, argv, "shv"))) {
#endif /* not HAVE_GETOPT_LONG */
case 'v': /* verbose */
verbose = TRUE;
break;
case 'h': /* help */
fprintf (stderr,
"Usage: gtsinside [OPTION] FILE1 FILE2\n"
"Test whether points are inside a closed surface.\n"
"FILE1 is a surface file. FILE2 is a text file where each line\n"
"contains the three coordinates of a point, separated with blanks.\n"
"\n"
" -v --verbose print statistics about the surface\n"
" -h --help display this help and exit\n"
"\n"
"Reports bugs to %s\n",
"https://savannah.nongnu.org/projects/pyformex/");
return 0; /* success */
break;
case '?': /* wrong options */
fprintf (stderr, "Try `gtsinside --help' for more information.\n");
return 1; /* failure */
}
}
if (optind >= argc) { /* missing FILE1 */
fprintf (stderr,
"gtsinside: missing FILE1\n"
"Try `inside --help' for more information.\n");
return 1; /* failure */
}
file1 = argv[optind++];
if (optind >= argc) { /* missing FILE2 */
fprintf (stderr,
"gtsinside: missing FILE2\n"
"Try `gtsinside --help' for more information.\n");
return 1; /* failure */
}
file2 = argv[optind++];
/* open first file */
if ((fptr = fopen (file1, "rt")) == NULL) {
fprintf (stderr, "gtsinside: can not open file `%s'\n", file1);
return 1;
}
/* reads in first surface file */
s1 = GTS_SURFACE (gts_object_new (GTS_OBJECT_CLASS (gts_surface_class ())));
fp = gts_file_new (fptr);
if (gts_surface_read (s1, fp)) {
fprintf (stderr, "gtsinside: `%s' is not a valid GTS surface file\n",
file1);
fprintf (stderr, "%s:%d:%d: %s\n", file1, fp->line, fp->pos, fp->error);
return 1;
}
gts_file_destroy (fp);
fclose (fptr);
/* open second file */
if ((fptr = fopen (file2, "rt")) == NULL) {
fprintf (stderr, "gtsinside: can not open file `%s'\n", file2);
return 1;
}
/* display summary information about the surface */
if (verbose) {
gts_surface_print_stats (s1, stderr);
}
/* check that the surface is an orientable manifold */
if (!gts_surface_is_orientable (s1)) {
fprintf (stderr, "gtsinside: surface `%s' is not an orientable manifold\n",
file1);
return 1;
}
/* build bounding box tree for the surface */
tree1 = gts_bb_tree_surface (s1);
is_open1 = gts_surface_volume (s1) < 0. ? TRUE : FALSE;
/* scan file 2 for points and determine if it they are inside surface */
while ( fscanf(fptr, "%lg %lg %lg", &x, &y, &z) == 3 ) {
P.x = x; P.y = y; P.z = z;
is_inside = gts_point_is_inside_surface(&P,tree1,is_open1);
if (is_inside) printf("%d\n",cnt);
//printf("Point %d: %lf, %lf, %lf: %d\n",cnt,P.x,P.y,P.z,is_inside);
cnt++;
}
if ( !feof(fptr) ) {
fprintf (stderr, "gtsinside: error while reading points from file `%s'\n",
file2);
return 1;
}
fclose (fptr);
/* destroy surface */
gts_object_destroy (GTS_OBJECT (s1));
/* destroy bounding box tree (including bounding boxes) */
gts_bb_tree_destroy (tree1, TRUE);
return 0;
}
/* set - compute set operations between surfaces */
int main (int argc, char * argv[])
{
GtsSurface * s1, * s2, * s3;
GtsSurfaceInter * si;
GNode * tree1, * tree2;
FILE * fptr;
GtsFile * fp;
int c = 0;
gboolean verbose = TRUE;
gboolean inter = FALSE;
gboolean check_self_intersection = FALSE;
gchar * operation, * file1, * file2;
gboolean closed = TRUE, is_open1, is_open2;
if (!setlocale (LC_ALL, "POSIX"))
g_warning ("cannot set locale to POSIX");
/* parse options using getopt */
while (c != EOF) {
#ifdef HAVE_GETOPT_LONG
static struct option long_options[] = {
{"inter", no_argument, NULL, 'i'},
{"self", no_argument, NULL, 's'},
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'}
};
int option_index = 0;
switch ((c = getopt_long (argc, argv, "hvis",
long_options, &option_index))) {
#else /* not HAVE_GETOPT_LONG */
switch ((c = getopt (argc, argv, "hvis"))) {
#endif /* not HAVE_GETOPT_LONG */
case 's': /* self */
check_self_intersection = TRUE;
break;
case 'i': /* inter */
inter = TRUE;
break;
case 'v': /* verbose */
verbose = FALSE;
break;
case 'h': /* help */
fprintf (stderr,
"Usage: set [OPTION] OPERATION FILE1 FILE2\n"
"Compute set operations between surfaces, where OPERATION is either.\n"
"union, inter, diff.\n"
"\n"
" -i --inter output an OOGL (Geomview) representation of the curve\n"
" intersection of the surfaces\n"
" -s --self checks that the surfaces are not self-intersecting\n"
" if one of them is, the set of self-intersecting faces\n"
" is written (as a GtsSurface) on standard output\n"
" -v --verbose do not print statistics about the surface\n"
" -h --help display this help and exit\n"
"\n"
"Reports bugs to %s\n",
GTS_MAINTAINER);
return 0; /* success */
break;
case '?': /* wrong options */
fprintf (stderr, "Try `set --help' for more information.\n");
return 1; /* failure */
}
}
if (optind >= argc) { /* missing OPERATION */
fprintf (stderr,
"set: missing OPERATION\n"
"Try `set --help' for more information.\n");
return 1; /* failure */
}
operation = argv[optind++];
if (optind >= argc) { /* missing FILE1 */
fprintf (stderr,
"set: missing FILE1\n"
"Try `set --help' for more information.\n");
return 1; /* failure */
}
file1 = argv[optind++];
if (optind >= argc) { /* missing FILE2 */
fprintf (stderr,
"set: missing FILE2\n"
"Try `set --help' for more information.\n");
return 1; /* failure */
}
file2 = argv[optind++];
/* open first file */
if ((fptr = fopen (file1, "rt")) == NULL) {
fprintf (stderr, "set: can not open file `%s'\n", file1);
return 1;
}
/* reads in first surface file */
s1 = GTS_SURFACE (gts_object_new (GTS_OBJECT_CLASS (gts_surface_class ())));
fp = gts_file_new (fptr);
if (gts_surface_read (s1, fp)) {
fprintf (stderr, "set: `%s' is not a valid GTS surface file\n",
file1);
fprintf (stderr, "%s:%d:%d: %s\n", file1, fp->line, fp->pos, fp->error);
return 1;
}
gts_file_destroy (fp);
fclose (fptr);
/* open second file */
if ((fptr = fopen (file2, "rt")) == NULL) {
fprintf (stderr, "set: can not open file `%s'\n", file2);
return 1;
}
/* reads in second surface file */
s2 = GTS_SURFACE (gts_object_new (GTS_OBJECT_CLASS (gts_surface_class ())));
fp = gts_file_new (fptr);
if (gts_surface_read (s2, fp)) {
fprintf (stderr, "set: `%s' is not a valid GTS surface file\n",
file2);
fprintf (stderr, "%s:%d:%d: %s\n", file2, fp->line, fp->pos, fp->error);
return 1;
}
gts_file_destroy (fp);
fclose (fptr);
/* display summary information about both surfaces */
if (verbose) {
gts_surface_print_stats (s1, stderr);
gts_surface_print_stats (s2, stderr);
}
/* check that the surfaces are orientable manifolds */
if (!gts_surface_is_orientable (s1)) {
fprintf (stderr, "set: surface `%s' is not an orientable manifold\n",
file1);
return 1;
}
if (!gts_surface_is_orientable (s2)) {
fprintf (stderr, "set: surface `%s' is not an orientable manifold\n",
file2);
return 1;
}
/* check that the surfaces are not self-intersecting */
if (check_self_intersection) {
GtsSurface * self_intersects;
self_intersects = gts_surface_is_self_intersecting (s1);
if (self_intersects != NULL) {
fprintf (stderr, "set: surface `%s' is self-intersecting\n", file1);
if (verbose)
gts_surface_print_stats (self_intersects, stderr);
gts_surface_write (self_intersects, stdout);
gts_object_destroy (GTS_OBJECT (self_intersects));
return 1;
}
self_intersects = gts_surface_is_self_intersecting (s2);
if (self_intersects != NULL) {
fprintf (stderr, "set: surface `%s' is self-intersecting\n", file2);
if (verbose)
gts_surface_print_stats (self_intersects, stderr);
gts_surface_write (self_intersects, stdout);
gts_object_destroy (GTS_OBJECT (self_intersects));
return 1;
}
}
/* build bounding box tree for first surface */
tree1 = gts_bb_tree_surface (s1);
is_open1 = gts_surface_volume (s1) < 0. ? TRUE : FALSE;
/* build bounding box tree for second surface */
tree2 = gts_bb_tree_surface (s2);
is_open2 = gts_surface_volume (s2) < 0. ? TRUE : FALSE;
si = gts_surface_inter_new (gts_surface_inter_class (),
s1, s2, tree1, tree2, is_open1, is_open2);
g_assert (gts_surface_inter_check (si, &closed));
if (!closed) {
fprintf (stderr,
"set: the intersection of `%s' and `%s' is not a closed curve\n",
file1, file2);
return 1;
}
s3 = gts_surface_new (gts_surface_class (),
gts_face_class (),
gts_edge_class (),
gts_vertex_class ());
if (!strcmp (operation, "union")) {
gts_surface_inter_boolean (si, s3, GTS_1_OUT_2);
gts_surface_inter_boolean (si, s3, GTS_2_OUT_1);
}
else if (!strcmp (operation, "inter")) {
gts_surface_inter_boolean (si, s3, GTS_1_IN_2);
gts_surface_inter_boolean (si, s3, GTS_2_IN_1);
}
else if (!strcmp (operation, "diff")) {
gts_surface_inter_boolean (si, s3, GTS_1_OUT_2);
gts_surface_inter_boolean (si, s3, GTS_2_IN_1);
gts_surface_foreach_face (si->s2, (GtsFunc) gts_triangle_revert, NULL);
gts_surface_foreach_face (s2, (GtsFunc) gts_triangle_revert, NULL);
}
else {
fprintf (stderr,
"set: operation `%s' unknown\n"
"Try `set --help' for more information.\n",
operation);
return 1;
}
/* check that the resulting surface is not self-intersecting */
if (check_self_intersection) {
GtsSurface * self_intersects;
self_intersects = gts_surface_is_self_intersecting (s3);
if (self_intersects != NULL) {
fprintf (stderr, "set: the resulting surface is self-intersecting\n");
if (verbose)
gts_surface_print_stats (self_intersects, stderr);
gts_surface_write (self_intersects, stdout);
gts_object_destroy (GTS_OBJECT (self_intersects));
return 1;
}
}
/* display summary information about the resulting surface */
if (verbose)
gts_surface_print_stats (s3, stderr);
/* write resulting surface to standard output */
if (inter) {
printf ("LIST {\n");
g_slist_foreach (si->edges, (GFunc) write_edge, stdout);
printf ("}\n");
}
else {
GTS_POINT_CLASS (gts_vertex_class ())->binary = TRUE;
gts_surface_write (s3, stdout);
}
/* destroy surfaces */
gts_object_destroy (GTS_OBJECT (s1));
gts_object_destroy (GTS_OBJECT (s2));
gts_object_destroy (GTS_OBJECT (s3));
gts_object_destroy (GTS_OBJECT (si));
/* destroy bounding box trees (including bounding boxes) */
gts_bb_tree_destroy (tree1, TRUE);
gts_bb_tree_destroy (tree2, TRUE);
return 0;
}
int main (int argc, char * argv[])
{
GtsSurface * s;
gboolean verbose = FALSE;
int c = 0;
if (!setlocale (LC_ALL, "POSIX"))
g_warning ("cannot set locale to POSIX");
/* parse options using getopt */
while (c != EOF) {
#ifdef HAVE_GETOPT_LONG
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'},
};
int option_index = 0;
switch ((c = getopt_long (argc, argv, "hv",
long_options, &option_index))) {
#else /* not HAVE_GETOPT_LONG */
switch ((c = getopt (argc, argv, "hv"))) {
#endif /* not HAVE_GETOPT_LONG */
case 'v': /* verbose */
verbose = TRUE;
break;
case 'h': /* help */
fprintf (stderr,
"Usage: merge [OPTION] file1.gts file2.gts ...\n"
"Merges files and outputs the resulting GTS surface.\n"
"\n"
" -v --verbose print statistics about the surface\n"
" -h --help display this help and exit\n"
"\n"
"Reports bugs to %s\n",
GTS_MAINTAINER);
return 0; /* success */
break;
case '?': /* wrong options */
fprintf (stderr, "Try `merge --help' for more information.\n");
return 1; /* failure */
}
}
s = GTS_SURFACE (gts_object_new (GTS_OBJECT_CLASS (gts_surface_class ())));
while (optind < argc) {
FILE * f = fopen (argv[optind], "r");
GtsFile * fp;
GtsSurface * s1;
if (f == NULL) {
fprintf (stderr, "merge: can not open file `%s'\n", argv[optind]);
return 1;
}
fp = gts_file_new (f);
s1 = GTS_SURFACE (gts_object_new (GTS_OBJECT_CLASS (gts_surface_class ())));
if (gts_surface_read (s1, fp)) {
fprintf (stderr, "merge: `%s' is not a valid GTS surface file\n",
argv[optind]);
fprintf (stderr, "%s:%d:%d: %s\n", argv[optind], fp->line, fp->pos, fp->error);
return 1;
}
gts_surface_merge (s, s1);
gts_object_destroy (GTS_OBJECT (s1));
gts_file_destroy (fp);
fclose (f);
optind++;
}
if (verbose)
gts_surface_print_stats (s, stderr);
gts_surface_write (s, stdout);
return 0;
}
