void
nmg_visit_shell(struct shell *s, const struct nmg_visit_handlers *htab, void *state)
/* Handler's private state */
{
struct faceuse *fu;
struct loopuse *lu;
struct edgeuse *eu;
NMG_CK_SHELL(s);
if (htab->bef_shell) htab->bef_shell((uint32_t *)s, state, 0);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
nmg_visit_faceuse(fu, htab, state);
}
for (BU_LIST_FOR(lu, loopuse, &s->lu_hd)) {
nmg_visit_loopuse(lu, htab, state);
}
for (BU_LIST_FOR(eu, edgeuse, &s->eu_hd)) {
nmg_visit_edgeuse(eu, htab, state);
}
if (s->vu_p) nmg_visit_vertexuse(s->vu_p, htab, state);
if (htab->vis_shell_a && s->sa_p)
htab->vis_shell_a((uint32_t *)s->sa_p, state, 0);
if (htab->aft_shell) htab->aft_shell((uint32_t *)s, state, 1);
}
/**
* Intersect all the edges in fu1 that don't lie on any of the faces
* of shell s2 with s2, i.e. "interior" edges, where the endpoints lie
* on s2, but the edge is not shared with a face of s2. Such edges
* wouldn't have been processed by the NEWLINE version of
* nmg_isect_two_generic_faces(), so intersections need to be looked
* for here. Fortunately, it's easy to reject everything except edges
* that need processing using only the topology structures.
*
* The "_int" at the end of the name is to signify that this routine
* does only "interior" edges, and is not a general face/shell
* intersector.
*/
void
nmg_isect_face3p_shell_int(struct nmg_inter_struct *is, struct faceuse *fu1, struct shell *s2)
{
struct shell *s1;
struct loopuse *lu1;
struct edgeuse *eu1;
NMG_CK_INTER_STRUCT(is);
NMG_CK_FACEUSE(fu1);
NMG_CK_SHELL(s2);
s1 = fu1->s_p;
NMG_CK_SHELL(s1);
if (RTG.NMG_debug & DEBUG_POLYSECT)
bu_log("nmg_isect_face3p_shell_int(, fu1=x%x, s2=x%x) START\n", fu1, s2);
for (BU_LIST_FOR (lu1, loopuse, &fu1->lu_hd)) {
NMG_CK_LOOPUSE(lu1);
if (BU_LIST_FIRST_MAGIC(&lu1->down_hd) == NMG_VERTEXUSE_MAGIC)
continue;
for (BU_LIST_FOR (eu1, edgeuse, &lu1->down_hd)) {
struct edgeuse *eu2;
eu2 = nmg_find_matching_eu_in_s(eu1, s2);
if (eu2) {
bu_log("nmg_isect_face3p_shell_int() eu1=x%x, e1=x%x, eu2=x%x, e2=x%x (nothing to do)\n", eu1, eu1->e_p, eu2, eu2->e_p);
/* Whether the edgeuse is in a face, or a wire
* edgeuse, the other guys will isect it.
*/
continue;
}
/* vu2a and vu2b are in shell s2, but there is no edge
* running between them in shell s2. Create a line of
* intersection, and go to it!.
*/
bu_log("nmg_isect_face3p_shell_int(, s2=x%x) eu1=x%x, no eu2\n", s2, eu1);
/* XXX eso no existe todavia */
/* nmg_isect_edge3p_shell(is, eu1, s2); */
}
}
if (RTG.NMG_debug & DEBUG_POLYSECT)
bu_log("nmg_isect_face3p_shell_int(, fu1=x%x, s2=x%x) END\n", fu1, s2);
}
/**
* Mesh every edge in shell 1 with every edge in shell 2.
* The return is the number of edges meshed.
*
* Does not use nmg_mesh_face_shell() to keep face/self meshing
* to the absolute minimum necessary.
*/
int
nmg_mesh_shell_shell(struct shell *s1, struct shell *s2, const struct bn_tol *tol)
{
struct faceuse *fu1;
struct faceuse *fu2;
int count = 0;
NMG_CK_SHELL(s1);
NMG_CK_SHELL(s2);
BN_CK_TOL(tol);
nmg_region_v_unique(s1->r_p, tol);
nmg_region_v_unique(s2->r_p, tol);
/* First, mesh all faces of shell 2 with themselves */
for (BU_LIST_FOR(fu2, faceuse, &s2->fu_hd)) {
NMG_CK_FACEUSE(fu2);
count += nmg_mesh_two_faces(fu2, fu2, tol);
}
/* Visit every face in shell 1 */
for (BU_LIST_FOR(fu1, faceuse, &s1->fu_hd)) {
NMG_CK_FACEUSE(fu1);
/* First, mesh each face in shell 1 with itself */
count += nmg_mesh_two_faces(fu1, fu1, tol);
/* Visit every face in shell 2 */
for (BU_LIST_FOR(fu2, faceuse, &s2->fu_hd)) {
NMG_CK_FACEUSE(fu2);
count += nmg_mesh_two_faces(fu1, fu2, tol);
}
}
/* XXX What about wire edges in the shell? */
/* Visit every wire loop in shell 1 */
/* Visit every wire edge in shell 1 */
return count;
}
/**
* The return is the number of edges meshed.
*/
int
nmg_mesh_face_shell(struct faceuse *fu1, struct shell *s, const struct bn_tol *tol)
{
register struct faceuse *fu2;
int count = 0;
NMG_CK_FACEUSE(fu1);
NMG_CK_SHELL(s);
BN_CK_TOL(tol);
count += nmg_mesh_two_faces(fu1, fu1, tol);
for (BU_LIST_FOR(fu2, faceuse, &s->fu_hd)) {
NMG_CK_FACEUSE(fu2);
count += nmg_mesh_two_faces(fu2, fu2, tol);
count += nmg_mesh_two_faces(fu1, fu2, tol);
}
/* XXX What about wire edges in the shell? */
return count;
}
/*
* Default keypoint in model space is established in "pt". Returns
* GED_ERROR if unable to determine a keypoint, otherwise returns
* GED_OK.
*/
int
_ged_get_solid_keypoint(struct ged *const gedp,
fastf_t *const pt,
const struct rt_db_internal *const ip,
const fastf_t *const mat)
{
point_t mpt;
RT_CK_DB_INTERNAL(ip);
switch (ip->idb_type) {
case ID_CLINE:
{
struct rt_cline_internal *cli =
(struct rt_cline_internal *)ip->idb_ptr;
RT_CLINE_CK_MAGIC(cli);
VMOVE(mpt, cli->v);
break;
}
case ID_PARTICLE:
{
struct rt_part_internal *part =
(struct rt_part_internal *)ip->idb_ptr;
RT_PART_CK_MAGIC(part);
VMOVE(mpt, part->part_V);
break;
}
case ID_PIPE:
{
struct rt_pipe_internal *pipeip;
struct wdb_pipept *pipe_seg;
pipeip = (struct rt_pipe_internal *)ip->idb_ptr;
RT_PIPE_CK_MAGIC(pipeip);
pipe_seg = BU_LIST_FIRST(wdb_pipept, &pipeip->pipe_segs_head);
VMOVE(mpt, pipe_seg->pp_coord);
break;
}
case ID_METABALL:
{
struct rt_metaball_internal *metaball =
(struct rt_metaball_internal *)ip->idb_ptr;
struct wdb_metaballpt *metaballpt;
RT_METABALL_CK_MAGIC(metaball);
VSETALL(mpt, 0.0);
metaballpt = BU_LIST_FIRST(wdb_metaballpt,
&metaball->metaball_ctrl_head);
VMOVE(mpt, metaballpt->coord);
break;
}
case ID_ARBN:
{
struct rt_arbn_internal *arbn =
(struct rt_arbn_internal *)ip->idb_ptr;
size_t i, j, k;
int good_vert = 0;
RT_ARBN_CK_MAGIC(arbn);
for (i = 0; i < arbn->neqn; i++) {
for (j = i + 1; j < arbn->neqn; j++) {
for (k = j + 1; k < arbn->neqn; k++) {
if (!bn_mkpoint_3planes(mpt, arbn->eqn[i],
arbn->eqn[j],
arbn->eqn[k])) {
size_t l;
good_vert = 1;
for (l = 0; l < arbn->neqn; l++) {
if (l == i || l == j || l == k)
continue;
if (DIST_PT_PLANE(mpt,
arbn->eqn[l]) >
gedp->ged_wdbp->wdb_tol.dist) {
good_vert = 0;
break;
}
}
if (good_vert)
break;
}
}
if (good_vert)
break;
}
if (good_vert)
break;
}
break;
}
case ID_EBM:
{
struct rt_ebm_internal *ebm =
(struct rt_ebm_internal *)ip->idb_ptr;
point_t pnt;
RT_EBM_CK_MAGIC(ebm);
VSETALL(pnt, 0.0);
MAT4X3PNT(mpt, ebm->mat, pnt);
break;
}
case ID_BOT:
{
struct rt_bot_internal *bot =
(struct rt_bot_internal *)ip->idb_ptr;
VMOVE(mpt, bot->vertices);
break;
}
case ID_DSP:
{
struct rt_dsp_internal *dsp =
(struct rt_dsp_internal *)ip->idb_ptr;
point_t pnt;
RT_DSP_CK_MAGIC(dsp);
VSETALL(pnt, 0.0);
MAT4X3PNT(mpt, dsp->dsp_stom, pnt);
break;
}
case ID_HF:
{
struct rt_hf_internal *hf =
(struct rt_hf_internal *)ip->idb_ptr;
RT_HF_CK_MAGIC(hf);
VMOVE(mpt, hf->v);
break;
}
case ID_VOL:
{
struct rt_vol_internal *vol =
(struct rt_vol_internal *)ip->idb_ptr;
point_t pnt;
RT_VOL_CK_MAGIC(vol);
VSETALL(pnt, 0.0);
MAT4X3PNT(mpt, vol->mat, pnt);
break;
}
case ID_HALF:
{
struct rt_half_internal *haf =
(struct rt_half_internal *)ip->idb_ptr;
RT_HALF_CK_MAGIC(haf);
VSCALE(mpt, haf->eqn, haf->eqn[H]);
break;
}
case ID_ARB8:
{
struct rt_arb_internal *arb =
(struct rt_arb_internal *)ip->idb_ptr;
RT_ARB_CK_MAGIC(arb);
VMOVE(mpt, arb->pt[0]);
break;
}
case ID_ELL:
case ID_SPH:
{
struct rt_ell_internal *ell =
(struct rt_ell_internal *)ip->idb_ptr;
RT_ELL_CK_MAGIC(ell);
VMOVE(mpt, ell->v);
break;
}
case ID_SUPERELL:
{
struct rt_superell_internal *superell =
(struct rt_superell_internal *)ip->idb_ptr;
RT_SUPERELL_CK_MAGIC(superell);
VMOVE(mpt, superell->v);
break;
}
case ID_TOR:
{
struct rt_tor_internal *tor =
(struct rt_tor_internal *)ip->idb_ptr;
RT_TOR_CK_MAGIC(tor);
VMOVE(mpt, tor->v);
break;
}
case ID_TGC:
case ID_REC:
{
struct rt_tgc_internal *tgc =
(struct rt_tgc_internal *)ip->idb_ptr;
RT_TGC_CK_MAGIC(tgc);
VMOVE(mpt, tgc->v);
break;
}
case ID_GRIP:
{
struct rt_grip_internal *gip =
(struct rt_grip_internal *)ip->idb_ptr;
RT_GRIP_CK_MAGIC(gip);
VMOVE(mpt, gip->center);
break;
}
case ID_ARS:
{
struct rt_ars_internal *ars =
(struct rt_ars_internal *)ip->idb_ptr;
RT_ARS_CK_MAGIC(ars);
VMOVE(mpt, &ars->curves[0][0]);
break;
}
case ID_RPC:
{
struct rt_rpc_internal *rpc =
(struct rt_rpc_internal *)ip->idb_ptr;
RT_RPC_CK_MAGIC(rpc);
VMOVE(mpt, rpc->rpc_V);
break;
}
case ID_RHC:
{
struct rt_rhc_internal *rhc =
(struct rt_rhc_internal *)ip->idb_ptr;
RT_RHC_CK_MAGIC(rhc);
VMOVE(mpt, rhc->rhc_V);
break;
}
case ID_EPA:
{
struct rt_epa_internal *epa =
(struct rt_epa_internal *)ip->idb_ptr;
RT_EPA_CK_MAGIC(epa);
VMOVE(mpt, epa->epa_V);
break;
}
case ID_EHY:
{
struct rt_ehy_internal *ehy =
(struct rt_ehy_internal *)ip->idb_ptr;
RT_EHY_CK_MAGIC(ehy);
VMOVE(mpt, ehy->ehy_V);
break;
}
case ID_HYP:
{
struct rt_hyp_internal *hyp =
(struct rt_hyp_internal *)ip->idb_ptr;
RT_HYP_CK_MAGIC(hyp);
VMOVE(mpt, hyp->hyp_Vi);
break;
}
case ID_ETO:
{
struct rt_eto_internal *eto =
(struct rt_eto_internal *)ip->idb_ptr;
RT_ETO_CK_MAGIC(eto);
VMOVE(mpt, eto->eto_V);
break;
}
case ID_POLY:
{
struct rt_pg_face_internal *_poly;
struct rt_pg_internal *pg =
(struct rt_pg_internal *)ip->idb_ptr;
RT_PG_CK_MAGIC(pg);
_poly = pg->poly;
VMOVE(mpt, _poly->verts);
break;
}
case ID_SKETCH:
{
struct rt_sketch_internal *skt =
(struct rt_sketch_internal *)ip->idb_ptr;
RT_SKETCH_CK_MAGIC(skt);
VMOVE(mpt, skt->V);
break;
}
case ID_EXTRUDE:
{
struct rt_extrude_internal *extr =
(struct rt_extrude_internal *)ip->idb_ptr;
RT_EXTRUDE_CK_MAGIC(extr);
if (extr->skt && extr->skt->verts) {
VJOIN2(mpt, extr->V, extr->skt->verts[0][0], extr->u_vec,
extr->skt->verts[0][1], extr->v_vec);
} else {
VMOVE(mpt, extr->V);
}
break;
}
case ID_NMG:
{
struct vertex *v;
struct vertexuse *vu;
struct edgeuse *eu;
struct loopuse *lu;
struct faceuse *fu;
struct shell *s;
struct nmgregion *r;
struct model *m =
(struct model *) ip->idb_ptr;
NMG_CK_MODEL(m);
/* set default first */
VSETALL(mpt, 0.0);
if (BU_LIST_IS_EMPTY(&m->r_hd))
break;
r = BU_LIST_FIRST(nmgregion, &m->r_hd);
if (!r)
break;
NMG_CK_REGION(r);
if (BU_LIST_IS_EMPTY(&r->s_hd))
break;
s = BU_LIST_FIRST(shell, &r->s_hd);
if (!s)
break;
NMG_CK_SHELL(s);
if (BU_LIST_IS_EMPTY(&s->fu_hd))
fu = (struct faceuse *)NULL;
else
fu = BU_LIST_FIRST(faceuse, &s->fu_hd);
if (fu) {
NMG_CK_FACEUSE(fu);
lu = BU_LIST_FIRST(loopuse, &fu->lu_hd);
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) == NMG_EDGEUSE_MAGIC) {
eu = BU_LIST_FIRST(edgeuse, &lu->down_hd);
NMG_CK_EDGEUSE(eu);
NMG_CK_VERTEXUSE(eu->vu_p);
v = eu->vu_p->v_p;
} else {
vu = BU_LIST_FIRST(vertexuse, &lu->down_hd);
NMG_CK_VERTEXUSE(vu);
v = vu->v_p;
}
NMG_CK_VERTEX(v);
if (!v->vg_p)
break;
VMOVE(mpt, v->vg_p->coord);
break;
}
if (BU_LIST_IS_EMPTY(&s->lu_hd))
lu = (struct loopuse *)NULL;
else
lu = BU_LIST_FIRST(loopuse, &s->lu_hd);
if (lu) {
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) == NMG_EDGEUSE_MAGIC) {
eu = BU_LIST_FIRST(edgeuse, &lu->down_hd);
NMG_CK_EDGEUSE(eu);
NMG_CK_VERTEXUSE(eu->vu_p);
v = eu->vu_p->v_p;
} else {
vu = BU_LIST_FIRST(vertexuse, &lu->down_hd);
NMG_CK_VERTEXUSE(vu);
v = vu->v_p;
}
NMG_CK_VERTEX(v);
if (!v->vg_p)
break;
VMOVE(mpt, v->vg_p->coord);
break;
}
if (BU_LIST_IS_EMPTY(&s->eu_hd))
eu = (struct edgeuse *)NULL;
else
eu = BU_LIST_FIRST(edgeuse, &s->eu_hd);
if (eu) {
NMG_CK_EDGEUSE(eu);
NMG_CK_VERTEXUSE(eu->vu_p);
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
if (!v->vg_p)
break;
VMOVE(mpt, v->vg_p->coord);
break;
}
vu = s->vu_p;
if (vu) {
NMG_CK_VERTEXUSE(vu);
v = vu->v_p;
NMG_CK_VERTEX(v);
if (!v->vg_p)
break;
VMOVE(mpt, v->vg_p->coord);
break;
}
}
default:
VSETALL(mpt, 0.0);
bu_vls_printf(gedp->ged_result_str,
"get_solid_keypoint: unrecognized solid type");
return GED_ERROR;
}
MAT4X3PNT(pt, mat, mpt);
return GED_OK;
}
/* routine to output the faceted NMG representation of a BRL-CAD region */
static void
output_nmg(struct nmgregion *r, const struct db_full_path *pathp, int UNUSED(region_id), int UNUSED(material_id))
{
struct model *m;
struct shell *s;
struct vertex *v;
char *region_name;
NMG_CK_REGION(r);
RT_CK_FULL_PATH(pathp);
region_name = db_path_to_string(pathp);
m = r->m_p;
NMG_CK_MODEL(m);
/* triangulate model */
nmg_triangulate_model(m, &tol);
/* Output triangles */
if (verbose) {
printf("Convert these triangles to your format for region %s\n", region_name);
} else {
printf("Converted %s\n", region_name);
}
for (BU_LIST_FOR(s, shell, &r->s_hd))
{
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd))
{
struct loopuse *lu;
/* vect_t facet_normal; */
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
/* Grab the face normal if needed */
/* NMG_GET_FU_NORMAL(facet_normal, fu); */
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd))
{
struct edgeuse *eu;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
/* loop through the edges in this loop (facet) */
if (verbose)
printf("\tfacet:\n");
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd))
{
NMG_CK_EDGEUSE(eu);
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
if (verbose)
printf("\t\t(%g %g %g)\n", V3ARGS(v->vg_p->coord));
}
tot_polygons++;
}
}
}
bu_free(region_name, "region name");
}
void
nmg_2_vrml(struct db_tree_state *tsp, const struct db_full_path *pathp, struct model *m)
{
struct mater_info *mater = &tsp->ts_mater;
const struct bn_tol *tol2 = tsp->ts_tol;
struct nmgregion *reg;
struct bu_ptbl verts;
struct vrml_mat mat;
struct bu_vls vls = BU_VLS_INIT_ZERO;
char *tok;
int i;
int first = 1;
int is_light = 0;
point_t ave_pt = VINIT_ZERO;
struct bu_vls shape_name = BU_VLS_INIT_ZERO;
char *full_path;
/* There may be a better way to capture the region_id, than
* getting the rt_comb_internal structure, (and may be a better
* way to capture the rt_comb_internal struct), but for now I just
* copied the method used in select_lights/select_non_lights above,
* could have used a global variable but I noticed none other were
* used, so I didn't want to be the first
*/
struct directory *dp;
struct rt_db_internal intern;
struct rt_comb_internal *comb;
int id;
/* static due to libbu exception handling */
static float r, g, b;
NMG_CK_MODEL(m);
full_path = db_path_to_string(pathp);
RT_CK_FULL_PATH(pathp);
dp = DB_FULL_PATH_CUR_DIR(pathp);
if (!(dp->d_flags & RT_DIR_COMB)) {
return;
}
id = rt_db_get_internal(&intern, dp, dbip, (matp_t)NULL, &rt_uniresource);
if (id < 0) {
bu_log("Cannot internal form of %s\n", dp->d_namep);
return;
}
if (id != ID_COMBINATION) {
bu_log("Directory/database mismatch!\n\t is '%s' a combination or not?\n",
dp->d_namep);
return;
}
comb = (struct rt_comb_internal *)intern.idb_ptr;
RT_CK_COMB(comb);
if (mater->ma_color_valid) {
r = mater->ma_color[0];
g = mater->ma_color[1];
b = mater->ma_color[2];
} else {
r = g = b = 0.5;
}
if (mater->ma_shader) {
tok = strtok(mater->ma_shader, tok_sep);
bu_strlcpy(mat.shader, tok, TXT_NAME_SIZE);
} else {
mat.shader[0] = '\0';
}
mat.shininess = -1;
mat.transparency = -1.0;
mat.lt_fraction = -1.0;
VSETALL(mat.lt_dir, 0.0);
mat.lt_angle = -1.0;
mat.tx_file[0] = '\0';
mat.tx_w = -1;
mat.tx_n = -1;
bu_vls_strcpy(&vls, &mater->ma_shader[strlen(mat.shader)]);
(void)bu_struct_parse(&vls, vrml_mat_parse, (char *)&mat, NULL);
if (bu_strncmp("light", mat.shader, 5) == 0) {
/* this is a light source */
is_light = 1;
} else {
path_2_vrml_id(&shape_name, full_path);
fprintf(fp_out, "\t\tDEF %s Shape {\n", bu_vls_addr(&shape_name));
fprintf(fp_out, "\t\t\t# Component_ID: %ld %s\n", comb->region_id, full_path);
fprintf(fp_out, "\t\t\tappearance Appearance {\n");
if (bu_strncmp("plastic", mat.shader, 7) == 0) {
if (mat.shininess < 0) {
mat.shininess = 10;
}
if (mat.transparency < SMALL_FASTF) {
mat.transparency = 0.0;
}
fprintf(fp_out, "\t\t\t\tmaterial Material {\n");
fprintf(fp_out, "\t\t\t\t\tdiffuseColor %g %g %g \n", r, g, b);
fprintf(fp_out, "\t\t\t\t\tshininess %g\n", 1.0-exp(-(double)mat.shininess/20.0));
if (mat.transparency > SMALL_FASTF) {
fprintf(fp_out, "\t\t\t\t\ttransparency %g\n", mat.transparency);
}
fprintf(fp_out, "\t\t\t\t\tspecularColor %g %g %g \n\t\t\t\t}\n", 1.0, 1.0, 1.0);
} else if (bu_strncmp("glass", mat.shader, 5) == 0) {
if (mat.shininess < 0) {
mat.shininess = 4;
}
if (mat.transparency < SMALL_FASTF) {
mat.transparency = 0.8;
}
fprintf(fp_out, "\t\t\t\tmaterial Material {\n");
fprintf(fp_out, "\t\t\t\t\tdiffuseColor %g %g %g \n", r, g, b);
fprintf(fp_out, "\t\t\t\t\tshininess %g\n", 1.0-exp(-(double)mat.shininess/20.0));
if (mat.transparency > SMALL_FASTF) {
fprintf(fp_out, "\t\t\t\t\ttransparency %g\n", mat.transparency);
}
fprintf(fp_out, "\t\t\t\t\tspecularColor %g %g %g \n\t\t\t\t}\n", 1.0, 1.0, 1.0);
} else if (bu_strncmp("texture", mat.shader, 7) == 0) {
if (mat.tx_w < 0) {
mat.tx_w = 512;
}
if (mat.tx_n < 0) {
mat.tx_n = 512;
}
if (strlen(mat.tx_file)) {
int tex_fd;
unsigned char tex_buf[TXT_BUF_LEN * 3];
if ((tex_fd = open(mat.tx_file, O_RDONLY | O_BINARY)) == (-1)) {
bu_log("Cannot open texture file (%s)\n", mat.tx_file);
perror("g-vrml: ");
} else {
long tex_len;
long bytes_read = 0;
long bytes_to_go = 0;
/* Johns note - need to check (test) the texture stuff */
fprintf(fp_out, "\t\t\t\ttextureTransform TextureTransform {\n");
fprintf(fp_out, "\t\t\t\t\tscale 1.33333 1.33333\n\t\t\t\t}\n");
fprintf(fp_out, "\t\t\t\ttexture PixelTexture {\n");
fprintf(fp_out, "\t\t\t\t\trepeatS TRUE\n");
fprintf(fp_out, "\t\t\t\t\trepeatT TRUE\n");
fprintf(fp_out, "\t\t\t\t\timage %d %d %d\n", mat.tx_w, mat.tx_n, 3);
tex_len = mat.tx_w*mat.tx_n * 3;
while (bytes_read < tex_len) {
int nbytes;
long readval;
bytes_to_go = tex_len - bytes_read;
CLAMP(bytes_to_go, 0, TXT_BUF_LEN * 3);
nbytes = 0;
while (nbytes < bytes_to_go) {
readval = read(tex_fd, &tex_buf[nbytes], bytes_to_go-nbytes);
if (readval < 0) {
perror("READ ERROR");
break;
} else {
nbytes += readval;
}
}
bytes_read += nbytes;
for (i = 0; i < nbytes; i += 3) {
fprintf(fp_out, "\t\t\t0x%02x%02x%02x\n",
tex_buf[i], tex_buf[i+1], tex_buf[i+2]);
}
}
fprintf(fp_out, "\t\t\t\t}\n");
close(tex_fd);
}
}
} else if (mater->ma_color_valid) {
/* no shader specified, but a color is assigned */
fprintf(fp_out, "\t\t\t\tmaterial Material {\n");
fprintf(fp_out, "\t\t\t\t\tdiffuseColor %g %g %g }\n", r, g, b);
} else {
/* If no color was defined set the colors according to the thousands groups */
int thou = comb->region_id / 1000;
thou == 0 ? fprintf(fp_out, "\t\t\tmaterial USE Material_999\n")
: thou == 1 ? fprintf(fp_out, "\t\t\tmaterial USE Material_1999\n")
: thou == 2 ? fprintf(fp_out, "\t\t\tmaterial USE Material_2999\n")
: thou == 3 ? fprintf(fp_out, "\t\t\tmaterial USE Material_3999\n")
: thou == 4 ? fprintf(fp_out, "\t\t\tmaterial USE Material_4999\n")
: thou == 5 ? fprintf(fp_out, "\t\t\tmaterial USE Material_5999\n")
: thou == 6 ? fprintf(fp_out, "\t\t\tmaterial USE Material_6999\n")
: thou == 7 ? fprintf(fp_out, "\t\t\tmaterial USE Material_7999\n")
: thou == 8 ? fprintf(fp_out, "\t\t\tmaterial USE Material_8999\n")
: fprintf(fp_out, "\t\t\tmaterial USE Material_9999\n");
}
}
if (!is_light) {
nmg_triangulate_model(m, tol2);
fprintf(fp_out, "\t\t\t}\n");
fprintf(fp_out, "\t\t\tgeometry IndexedFaceSet {\n");
fprintf(fp_out, "\t\t\t\tcoord Coordinate {\n");
}
/* get list of vertices */
nmg_vertex_tabulate(&verts, &m->magic);
if (!is_light) {
fprintf(fp_out, "\t\t\t\t\tpoint [");
} else {
VSETALL(ave_pt, 0.0);
}
for (i = 0; i < BU_PTBL_END(&verts); i++) {
struct vertex *v;
struct vertex_g *vg;
point_t pt_meters;
v = (struct vertex *)BU_PTBL_GET(&verts, i);
NMG_CK_VERTEX(v);
vg = v->vg_p;
NMG_CK_VERTEX_G(vg);
/* convert to desired units */
VSCALE(pt_meters, vg->coord, scale_factor);
if (is_light) {
VADD2(ave_pt, ave_pt, pt_meters);
}
if (first) {
if (!is_light) {
fprintf(fp_out, " %10.10e %10.10e %10.10e, # point %d\n", V3ARGS(pt_meters), i);
}
first = 0;
} else if (!is_light) {
fprintf(fp_out, "\t\t\t\t\t%10.10e %10.10e %10.10e, # point %d\n", V3ARGS(pt_meters), i);
}
}
if (!is_light) {
fprintf(fp_out, "\t\t\t\t\t]\n\t\t\t\t}\n");
} else {
fastf_t one_over_count;
one_over_count = 1.0/(fastf_t)BU_PTBL_END(&verts);
VSCALE(ave_pt, ave_pt, one_over_count);
}
first = 1;
if (!is_light) {
fprintf(fp_out, "\t\t\t\tcoordIndex [\n");
for (BU_LIST_FOR(reg, nmgregion, &m->r_hd)) {
struct shell *s;
NMG_CK_REGION(reg);
for (BU_LIST_FOR(s, shell, ®->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME) {
continue;
}
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC) {
continue;
}
if (!first) {
fprintf(fp_out, ",\n");
} else {
first = 0;
}
fprintf(fp_out, "\t\t\t\t\t");
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd)) {
struct vertex *v;
NMG_CK_EDGEUSE(eu);
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
fprintf(fp_out, " %d,", bu_ptbl_locate(&verts, (long *)v));
}
fprintf(fp_out, "-1");
}
}
}
}
fprintf(fp_out, "\n\t\t\t\t]\n\t\t\t\tnormalPerVertex FALSE\n");
fprintf(fp_out, "\t\t\t\tconvex FALSE\n");
fprintf(fp_out, "\t\t\t\tcreaseAngle 0.5\n");
fprintf(fp_out, "\t\t\t}\n\t\t}\n");
} else {
static void
nmg_to_obj(struct nmgregion *r, struct db_full_path *pathp, int region_id, int aircode, int los, int material_id)
{
struct model *m;
struct shell *s;
struct vertex *v;
struct bu_ptbl verts;
struct bu_ptbl norms;
char *region_name;
int numverts = 0; /* Number of vertices to output */
int numtri = 0; /* Number of triangles to output */
int i;
NMG_CK_REGION( r );
RT_CK_FULL_PATH(pathp);
region_name = db_path_to_string( pathp );
#if 0
printf("Attempting to process region %s\n", region_name);
fflush(stdout);
#endif
m = r->m_p;
NMG_CK_MODEL( m );
/* triangulate model */
nmg_triangulate_model( m, &tol );
/* list all vertices in result */
nmg_vertex_tabulate( &verts, &r->l.magic );
/* Get number of vertices */
numverts = BU_PTBL_END (&verts);
/* get list of vertexuse normals */
if ( do_normals )
nmg_vertexuse_normal_tabulate( &norms, &r->l.magic );
/* XXX Check vertices, shells faces first? Do not want to punt mid-stream */
/* BEGIN CHECK SECTION */
/* Check vertices */
for ( i=0; i<numverts; i++ )
{
v = (struct vertex *)BU_PTBL_GET( &verts, i );
NMG_CK_VERTEX( v );
}
/* Check triangles */
for ( BU_LIST_FOR( s, shell, &r->s_hd ) )
{
struct faceuse *fu;
NMG_CK_SHELL( s );
for ( BU_LIST_FOR( fu, faceuse, &s->fu_hd ) )
{
struct loopuse *lu;
NMG_CK_FACEUSE( fu );
if ( fu->orientation != OT_SAME )
continue;
for ( BU_LIST_FOR( lu, loopuse, &fu->lu_hd ) )
{
struct edgeuse *eu;
int vert_count=0;
NMG_CK_LOOPUSE( lu );
if ( BU_LIST_FIRST_MAGIC( &lu->down_hd ) != NMG_EDGEUSE_MAGIC )
continue;
/* check vertex numbers for each triangle */
for ( BU_LIST_FOR( eu, edgeuse, &lu->down_hd ) )
{
NMG_CK_EDGEUSE( eu );
v = eu->vu_p->v_p;
NMG_CK_VERTEX( v );
vert_count++;
i = bu_ptbl_locate( &verts, (long *)v );
if ( i < 0 )
{
/*XXX*/ bu_ptbl_free( &verts);
/*XXX*/ bu_free( region_name, "region name" );
bu_log( "Vertex from eu x%x is not in nmgregion x%x\n", eu, r );
bu_exit(1, "ERROR: Can't find vertex in list!");
}
}
if ( vert_count > 3 )
{
/*XXX*/ bu_ptbl_free( &verts);
/*XXX*/ bu_free( region_name, "region name" );
bu_log( "lu x%x has %d vertices!\n", lu, vert_count );
bu_exit(1, "ERROR: LU is not a triangle\n");
}
else if ( vert_count < 3 )
continue;
numtri++;
}
}
}
/* END CHECK SECTION */
/* Write pertinent info for this region */
if ( usemtl )
fprintf( fp, "usemtl %d_%d_%d\n", aircode, los, material_id );
fprintf( fp, "g %s", pathp->fp_names[0]->d_namep );
for ( i=1; i<pathp->fp_len; i++ )
fprintf( fp, "/%s", pathp->fp_names[i]->d_namep );
fprintf( fp, "\n" );
/* Write vertices */
for ( i=0; i<numverts; i++ )
{
v = (struct vertex *)BU_PTBL_GET( &verts, i );
NMG_CK_VERTEX( v );
if (inches)
fprintf( fp, "v %f %f %f\n", V3ARGSIN( v->vg_p->coord ));
else
fprintf( fp, "v %f %f %f\n", V3ARGS( v->vg_p->coord ));
}
/* Write vertexuse normals */
if ( do_normals )
{
for ( i=0; i<BU_PTBL_END( &norms ); i++ )
{
struct vertexuse_a_plane *va;
va = (struct vertexuse_a_plane *)BU_PTBL_GET( &norms, i );
NMG_CK_VERTEXUSE_A_PLANE( va );
if (inches)
fprintf( fp, "vn %f %f %f\n", V3ARGSIN( va->N ));
else
fprintf( fp, "vn %f %f %f\n", V3ARGS( va->N ));
}
}
/* output triangles */
for ( BU_LIST_FOR( s, shell, &r->s_hd ) )
{
struct faceuse *fu;
NMG_CK_SHELL( s );
for ( BU_LIST_FOR( fu, faceuse, &s->fu_hd ) )
{
struct loopuse *lu;
NMG_CK_FACEUSE( fu );
if ( fu->orientation != OT_SAME )
continue;
for ( BU_LIST_FOR( lu, loopuse, &fu->lu_hd ) )
{
struct edgeuse *eu;
int vert_count=0;
int use_normals=1;
NMG_CK_LOOPUSE( lu );
if ( BU_LIST_FIRST_MAGIC( &lu->down_hd ) != NMG_EDGEUSE_MAGIC )
continue;
/* Each vertexuse of the face must have a normal in order
* to use the normals in Wavefront
*/
if ( do_normals )
{
for ( BU_LIST_FOR( eu, edgeuse, &lu->down_hd ) )
{
NMG_CK_EDGEUSE( eu );
if ( !eu->vu_p->a.magic_p )
{
use_normals = 0;
break;
}
if ( *eu->vu_p->a.magic_p != NMG_VERTEXUSE_A_PLANE_MAGIC )
{
use_normals = 0;
break;
}
}
}
else
use_normals = 0;
fprintf( fp, "f" );
/* list vertex numbers for each triangle */
for ( BU_LIST_FOR( eu, edgeuse, &lu->down_hd ) )
{
NMG_CK_EDGEUSE( eu );
v = eu->vu_p->v_p;
NMG_CK_VERTEX( v );
vert_count++;
i = bu_ptbl_locate( &verts, (long *)v );
if ( i < 0 )
{
bu_ptbl_free( &verts);
bu_log( "Vertex from eu x%x is not in nmgregion x%x\n", eu, r );
/*XXX*/ bu_free( region_name, "region name" );
/*XXX*/ bu_exit(1, "Can't find vertex in list!\n");
}
if ( use_normals )
{
int j;
j = bu_ptbl_locate( &norms, (long *)eu->vu_p->a.magic_p );
fprintf( fp, " %ld//%ld", i+1+vert_offset, j+1+norm_offset );
}
else
fprintf( fp, " %ld", i+1+vert_offset );
}
fprintf( fp, "\n" );
if ( vert_count > 3 )
{
bu_ptbl_free( &verts);
bu_free( region_name, "region name" );
bu_log( "lu x%x has %d vertices!\n", lu, vert_count );
bu_exit(1, "ERROR: LU is not a triangle\n" );
}
}
}
}
int
main(int argc, char **argv) /* really has no arguments */
{
struct nmgregion *r;
char * id_name = "BRL-CAD t-NURBS NMG Example";
char * tea_name = "UtahTeapot";
char * uplot_name = "teapot.pl";
struct bu_list vhead;
FILE *fp;
int i;
tol.magic = BN_TOL_MAGIC;
tol.dist = 0.005;
tol.dist_sq = tol.dist * tol.dist;
tol.perp = 1e-6;
tol.para = 1 - tol.perp;
BU_LIST_INIT( &rt_g.rtg_vlfree );
outfp = wdb_fopen( "tea_nmg.g" );
rt_g.debug |= DEBUG_ALLRAYS; /* Cause core dumps on bu_bomb(), but no extra messages */
while ((i=bu_getopt(argc, argv, "d")) != EOF) {
switch (i) {
case 'd' :
rt_g.debug |= DEBUG_MEM | DEBUG_MEM_FULL;
break;
default :
(void)fprintf(stderr,
"Usage: %s [-d] > database.g\n", *argv);
return(-1);
}
}
mk_id( outfp, id_name);
m = nmg_mm();
NMG_CK_MODEL( m );
r = nmg_mrsv( m );
NMG_CK_REGION( r );
s = BU_LIST_FIRST( shell, &r->s_hd );
NMG_CK_SHELL( s );
/* Step through each patch and create a NMG TNURB face
* representing the patch then dump them out.
*/
for ( i = 0; i < PATCH_COUNT; i++)
{
dump_patch( patches[i] );
}
/* Connect up the coincident vertexuses and edges */
(void)nmg_model_fuse( m, &tol );
/* write NMG to output file */
(void)mk_nmg( outfp, tea_name, m );
wdb_close(outfp);
/* Make a vlist drawing of the model */
BU_LIST_INIT( &vhead );
nmg_m_to_vlist( &vhead, m, 0 );
/* Make a UNIX plot file from this vlist */
if ( (fp=fopen( uplot_name, "w" )) == NULL )
{
bu_log( "Cannot open plot file: %s\n", uplot_name );
perror( "teapot_nmg" );
}
else
rt_vlist_to_uplot( fp, &vhead );
return(0);
}
void
nmg_2_vrml(FILE *fp, const struct db_full_path *pathp, struct model *m, struct mater_info *mater)
{
struct nmgregion *reg;
struct bu_ptbl verts;
struct vrml_mat mat;
struct bu_vls vls = BU_VLS_INIT_ZERO;
char *tok;
int i;
int first=1;
int is_light=0;
float r, g, b;
point_t ave_pt;
char *full_path;
/*There may be a better way to capture the region_id, than getting the rt_comb_internal structure,
* (and may be a better way to capture the rt_comb_internal struct), but for now I just copied the
* method used in select_lights/select_non_lights above, could have used a global variable but I noticed
* none other were used, so I didn't want to be the first
*/
struct directory *dp;
struct rt_db_internal intern;
struct rt_comb_internal *comb;
int id;
NMG_CK_MODEL( m );
BARRIER_CHECK;
full_path = db_path_to_string( pathp );
/* replace all occurrences of '.' with '_' */
char_replace(full_path, '.', '_');
RT_CK_FULL_PATH( pathp );
dp = DB_FULL_PATH_CUR_DIR( pathp );
if ( !(dp->d_flags & RT_DIR_COMB) )
return;
id = rt_db_get_internal( &intern, dp, dbip, (matp_t)NULL, &rt_uniresource );
if ( id < 0 )
{
bu_log( "Cannot internal form of %s\n", dp->d_namep );
return;
}
if ( id != ID_COMBINATION )
{
bu_log( "Directory/database mismatch!\n\t is '%s' a combination or not?\n",
dp->d_namep );
return;
}
comb = (struct rt_comb_internal *)intern.idb_ptr;
RT_CK_COMB( comb );
if ( mater->ma_color_valid )
{
r = mater->ma_color[0];
g = mater->ma_color[1];
b = mater->ma_color[2];
}
else
{
r = g = b = 0.5;
}
if ( mater->ma_shader )
{
tok = strtok( mater->ma_shader, tok_sep );
bu_strlcpy( mat.shader, tok, TXT_NAME_SIZE );
}
else
mat.shader[0] = '\0';
mat.shininess = -1;
mat.transparency = -1.0;
mat.lt_fraction = -1.0;
VSETALL( mat.lt_dir, 0.0 );
mat.lt_angle = -1.0;
mat.tx_file[0] = '\0';
mat.tx_w = -1;
mat.tx_n = -1;
bu_vls_strcpy( &vls, &mater->ma_shader[strlen(mat.shader)] );
(void)bu_struct_parse( &vls, vrml_mat_parse, (char *)&mat, NULL);
if ( bu_strncmp( "light", mat.shader, 5 ) == 0 )
{
/* this is a light source */
is_light = 1;
}
else
{
fprintf( fp, "\t<Shape DEF=\"%s\">\n", full_path);
fprintf( fp, "\t\t<Appearance>\n");
if ( bu_strncmp( "plastic", mat.shader, 7 ) == 0 )
{
if ( mat.shininess < 0 )
mat.shininess = 10;
V_MAX(mat.transparency, 0.0);
fprintf( fp, "\t\t\t<Material diffuseColor=\"%g %g %g\" shininess=\"%g\" transparency=\"%g\" specularColor=\"%g %g %g\"/>\n", r, g, b, 1.0-exp(-(double)mat.shininess/20.0), mat.transparency, 1.0, 1.0, 1.0);
}
else if ( bu_strncmp( "glass", mat.shader, 5 ) == 0 )
{
if ( mat.shininess < 0 )
mat.shininess = 4;
if ( mat.transparency < 0.0 )
mat.transparency = 0.8;
fprintf( fp, "\t\t\t<Material diffuseColor=\"%g %g %g\" shininess=\"%g\" transparency=\"%g\" specularColor=\"%g %g %g\"/>\n", r, g, b, 1.0-exp(-(double)mat.shininess/20.0), mat.transparency, 1.0, 1.0, 1.0);
}
else if ( mater->ma_color_valid )
{
fprintf( fp, "\t\t\t<Material diffuseColor=\"%g %g %g\"/>\n", r, g, b);
}
else
{
/* If no color was defined set the colors according to the thousands groups */
int thou = comb->region_id/1000;
thou == 0 ? fprintf( fp, "\t\t\t<Material USE=\"Material_999\"/>\n")
: thou == 1 ? fprintf( fp, "\t\t\t<Material USE=\"Material_1999\"/>\n")
: thou == 2 ? fprintf( fp, "\t\t\t<Material USE=\"Material_2999\"/>\n")
: thou == 3 ? fprintf( fp, "\t\t\t<Material USE=\"Material_3999\"/>\n")
: thou == 4 ? fprintf( fp, "\t\t\t<Material USE=\"Material_4999\"/>\n")
: thou == 5 ? fprintf( fp, "\t\t\t<Material USE=\"Material_5999\"/>\n")
: thou == 6 ? fprintf( fp, "\t\t\t<Material USE=\"Material_6999\"/>\n")
: thou == 7 ? fprintf( fp, "\t\t\t<Material USE=\"Material_7999\"/>\n")
: thou == 8 ? fprintf( fp, "\t\t\t<Material USE=\"Material_8999\"/>\n")
: fprintf( fp, "\t\t\t<Material USE=\"Material_9999\"/>\n");
}
}
if ( !is_light )
{
process_non_light(m);
fprintf( fp, "\t\t</Appearance>\n");
}
/* FIXME: need code to handle light */
/* get list of vertices */
nmg_vertex_tabulate( &verts, &m->magic );
fprintf( fp, "\t\t<IndexedFaceSet coordIndex=\"\n");
first = 1;
if ( !is_light )
{
for ( BU_LIST_FOR( reg, nmgregion, &m->r_hd ) )
{
struct shell *s;
NMG_CK_REGION( reg );
for ( BU_LIST_FOR( s, shell, ®->s_hd ) )
{
struct faceuse *fu;
NMG_CK_SHELL( s );
for ( BU_LIST_FOR( fu, faceuse, &s->fu_hd ) )
{
struct loopuse *lu;
NMG_CK_FACEUSE( fu );
if ( fu->orientation != OT_SAME )
continue;
for ( BU_LIST_FOR( lu, loopuse, &fu->lu_hd ) )
{
struct edgeuse *eu;
NMG_CK_LOOPUSE( lu );
if ( BU_LIST_FIRST_MAGIC( &lu->down_hd ) != NMG_EDGEUSE_MAGIC )
continue;
if ( !first )
fprintf( fp, ",\n" );
else
first = 0;
fprintf( fp, "\t\t\t\t" );
for ( BU_LIST_FOR( eu, edgeuse, &lu->down_hd ) )
{
struct vertex *v;
NMG_CK_EDGEUSE( eu );
v = eu->vu_p->v_p;
NMG_CK_VERTEX( v );
fprintf( fp, " %d,", bu_ptbl_locate( &verts, (long *)v ) );
}
fprintf( fp, "-1" );
}
}
}
}
/* close coordIndex */
fprintf( fp, "\" ");
fprintf( fp, "normalPerVertex=\"false\" ");
fprintf( fp, "convex=\"false\" ");
fprintf( fp, "creaseAngle=\"0.5\" ");
/* close IndexedFaceSet open tag */
fprintf( fp, ">\n");
}
fprintf( fp, "\t\t\t<Coordinate point=\"");
for ( i=0; i<BU_PTBL_END( &verts ); i++ )
{
struct vertex *v;
struct vertex_g *vg;
point_t pt_meters;
v = (struct vertex *)BU_PTBL_GET( &verts, i );
NMG_CK_VERTEX( v );
vg = v->vg_p;
NMG_CK_VERTEX_G( vg );
/* convert to desired units */
VSCALE( pt_meters, vg->coord, scale_factor );
if ( is_light )
VADD2( ave_pt, ave_pt, pt_meters );
if ( first )
{
if ( !is_light )
fprintf( fp, " %10.10e %10.10e %10.10e, ", V3ARGS(pt_meters));
first = 0;
}
else
if ( !is_light )
fprintf( fp, "%10.10e %10.10e %10.10e, ", V3ARGS( pt_meters ));
}
/* close point */
fprintf(fp, "\"");
/* close Coordinate */
fprintf(fp, "/>\n");
/* IndexedFaceSet end tag */
fprintf( fp, "\t\t</IndexedFaceSet>\n");
/* Shape end tag */
fprintf( fp, "\t</Shape>\n");
BARRIER_CHECK;
}
void
process_non_light(struct model *m) {
/* static due to bu exception handling */
static struct shell *s;
static struct shell *next_s;
static struct faceuse *fu;
static struct faceuse *next_fu;
static struct loopuse *lu;
static struct nmgregion *reg;
/* triangulate any faceuses with holes */
for ( BU_LIST_FOR( reg, nmgregion, &m->r_hd ) )
{
NMG_CK_REGION( reg );
s = BU_LIST_FIRST( shell, ®->s_hd );
while ( BU_LIST_NOT_HEAD( s, ®->s_hd ) )
{
NMG_CK_SHELL( s );
next_s = BU_LIST_PNEXT( shell, &s->l );
fu = BU_LIST_FIRST( faceuse, &s->fu_hd );
while ( BU_LIST_NOT_HEAD( &fu->l, &s->fu_hd ) )
{
int shell_is_dead=0;
NMG_CK_FACEUSE( fu );
next_fu = BU_LIST_PNEXT( faceuse, &fu->l );
if ( fu->orientation != OT_SAME )
{
fu = next_fu;
continue;
}
if ( fu->fumate_p == next_fu )
{
/* make sure next_fu is not the mate of fu */
next_fu = BU_LIST_PNEXT( faceuse, &next_fu->l );
}
/* check if this faceuse has any holes */
for ( BU_LIST_FOR( lu, loopuse, &fu->lu_hd ) )
{
NMG_CK_LOOPUSE( lu );
if ( lu->orientation == OT_OPPOSITE )
{
/* this is a hole, so
* triangulate the faceuse
*/
if ( !BU_SETJUMP )
{
/* try */
if ( nmg_triangulate_fu( fu, &tol ) )
{
if ( nmg_kfu( fu ) )
{
(void) nmg_ks( s );
shell_is_dead = 1;
}
}
} else {
/* catch */
bu_log( "A face has failed triangulation!\n" );
if ( next_fu == fu->fumate_p )
next_fu = BU_LIST_PNEXT( faceuse, &next_fu->l );
if ( nmg_kfu( fu ) )
{
(void) nmg_ks( s );
shell_is_dead = 1;
}
} BU_UNSETJUMP;
break;
}
}
if ( shell_is_dead )
break;
fu = next_fu;
}
s = next_s;
}
}
}
static void
nmg_to_egg(struct nmgregion *r, const struct db_full_path *pathp, int UNUSED(region_id), int UNUSED(material_id), float UNUSED(color[3]), void *client_data)
{
struct model *m;
struct shell *s;
struct vertex *v;
char *region_name;
int region_polys=0;
int vert_count=0;
struct egg_conv_data *conv_data = (struct egg_conv_data *)client_data;
NMG_CK_REGION(r);
RT_CK_FULL_PATH(pathp);
region_name = db_path_to_string(pathp);
m = r->m_p;
NMG_CK_MODEL(m);
/* triangulate model */
nmg_triangulate_model(m, &conv_data->tol);
/* Write pertinent info for this region */
fprintf(conv_data->fp, " <VertexPool> %s {\n", (region_name+1));
/* Build the VertexPool */
for (BU_LIST_FOR (s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR (fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
vect_t facet_normal;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
/* Grab the face normal and save it for all the vertex loops */
NMG_GET_FU_NORMAL(facet_normal, fu);
for (BU_LIST_FOR (lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
/* check vertex numbers for each triangle */
for (BU_LIST_FOR (eu, edgeuse, &lu->down_hd)) {
NMG_CK_EDGEUSE(eu);
vert_count++;
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
fprintf(conv_data->fp, " <Vertex> %d {\n %f %f %f\n <Normal> { %f %f %f }\n }\n",
vert_count,
V3ARGS(v->vg_p->coord),
V3ARGS(facet_normal));
}
}
}
}
fprintf(conv_data->fp, " }\n");
vert_count = 0;
for (BU_LIST_FOR (s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR (fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR (lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
fprintf(conv_data->fp, " <Polygon> { \n <RGBA> { 1 1 1 1 } \n <VertexRef> { ");
/* check vertex numbers for each triangle */
for (BU_LIST_FOR (eu, edgeuse, &lu->down_hd)) {
NMG_CK_EDGEUSE(eu);
vert_count++;
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
fprintf(conv_data->fp, " %d", vert_count);
}
fprintf(conv_data->fp, " <Ref> { \"%s\" } }\n }\n", region_name+1);
region_polys++;
}
}
}
conv_data->tot_polygons += region_polys;
bu_free(region_name, "region name");
}
/**
* Make a life-and-death decision on every element of a shell.
* Descend the "great chain of being" from the face to loop to edge to
* vertex, saving or demoting along the way.
*
* Note that there is no moving of items from one shell to another.
*/
HIDDEN void
nmg_eval_shell(register struct shell *s, struct nmg_bool_state *bs)
{
struct faceuse *fu;
struct faceuse *nextfu;
struct loopuse *lu;
struct loopuse *nextlu;
struct edgeuse *eu;
struct edgeuse *nexteu;
struct vertexuse *vu;
int loops_retained;
NMG_CK_SHELL(s);
BN_CK_TOL(bs->bs_tol);
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
/*
* For each face in the shell, process all the loops in the face,
* and then handle the face and all loops as a unit.
*/
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
fu = BU_LIST_FIRST(faceuse, &s->fu_hd);
while (BU_LIST_NOT_HEAD(fu, &s->fu_hd)) {
NMG_CK_FACEUSE(fu);
nextfu = BU_LIST_PNEXT(faceuse, fu);
/* Faceuse mates will be handled at same time as OT_SAME fu */
if (fu->orientation != OT_SAME) {
fu = nextfu;
continue;
}
if (fu->fumate_p == nextfu)
nextfu = BU_LIST_PNEXT(faceuse, nextfu);
/* Consider this face */
NMG_CK_FACE(fu->f_p);
loops_retained = 0;
lu = BU_LIST_FIRST(loopuse, &fu->lu_hd);
while (BU_LIST_NOT_HEAD(lu, &fu->lu_hd)) {
NMG_CK_LOOPUSE(lu);
nextlu = BU_LIST_PNEXT(loopuse, lu);
if (lu->lumate_p == nextlu)
nextlu = BU_LIST_PNEXT(loopuse, nextlu);
NMG_CK_LOOP(lu->l_p);
nmg_ck_lu_orientation(lu, bs->bs_tol);
switch (nmg_eval_action(&lu->l_p->magic, bs)) {
case BACTION_KILL:
/* Kill by demoting loop to edges */
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) == NMG_VERTEXUSE_MAGIC) {
/* loop of single vertex */
(void)nmg_klu(lu);
} else if (nmg_demote_lu(lu) == 0) {
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
}
lu = nextlu;
continue;
case BACTION_RETAIN:
loops_retained++;
break;
default:
bu_bomb("nmg_eval_shell() bad BACTION\n");
}
lu = nextlu;
}
if (RTG.NMG_debug & DEBUG_BOOLEVAL)
bu_log("faceuse %p loops retained=%d\n",
(void *)fu, loops_retained);
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
/*
* Here, faceuse will have 0 or more loopuses still in it.
* Decide the fate of the face; if the face dies,
* then any remaining loops, edges, etc., will die too.
*/
if (BU_LIST_IS_EMPTY(&fu->lu_hd)) {
if (loops_retained) bu_bomb("nmg_eval_shell() empty faceuse with retained loops?\n");
/* faceuse is empty, face & mate die */
if (RTG.NMG_debug & DEBUG_BOOLEVAL)
bu_log("faceuse %p empty, kill\n", (void *)fu);
nmg_kfu(fu); /* kill face & mate, dequeue from shell */
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
fu = nextfu;
continue;
}
if (loops_retained <= 0) {
nmg_pr_fu(fu, (char *)NULL);
bu_bomb("nmg_eval_shell() non-empty faceuse, no loops retained?\n");
}
fu = nextfu;
}
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
/*
* For each loop in the shell, process.
* Each loop is either a wire-loop, or a vertex-with-self-loop.
* Only consider wire loops here.
*/
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
lu = BU_LIST_FIRST(loopuse, &s->lu_hd);
while (BU_LIST_NOT_HEAD(lu, &s->lu_hd)) {
NMG_CK_LOOPUSE(lu);
nextlu = BU_LIST_PNEXT(loopuse, lu);
if (lu->lumate_p == nextlu)
nextlu = BU_LIST_PNEXT(loopuse, nextlu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) == NMG_VERTEXUSE_MAGIC) {
/* ignore vertex-with-self-loop */
lu = nextlu;
continue;
}
NMG_CK_LOOP(lu->l_p);
switch (nmg_eval_action(&lu->l_p->magic, bs)) {
case BACTION_KILL:
/* Demote the loopuse into wire edges */
/* kill loop & mate */
if (nmg_demote_lu(lu) == 0)
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
lu = nextlu;
continue;
case BACTION_RETAIN:
break;
default:
bu_bomb("nmg_eval_shell() bad BACTION\n");
}
lu = nextlu;
}
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
/*
* For each wire-edge in the shell, ...
*/
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
eu = BU_LIST_FIRST(edgeuse, &s->eu_hd);
while (BU_LIST_NOT_HEAD(eu, &s->eu_hd)) {
NMG_CK_EDGEUSE(eu);
nexteu = BU_LIST_PNEXT(edgeuse, eu); /* may be head */
if (eu->eumate_p == nexteu)
nexteu = BU_LIST_PNEXT(edgeuse, nexteu);
/* Consider this edge */
NMG_CK_EDGE(eu->e_p);
switch (nmg_eval_action(&eu->e_p->magic, bs)) {
case BACTION_KILL:
/* Demote the edegeuse (and mate) into vertices */
if (nmg_demote_eu(eu) == 0)
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
eu = nexteu;
continue;
case BACTION_RETAIN:
break;
default:
bu_bomb("nmg_eval_shell() bad BACTION\n");
}
eu = nexteu;
}
/*
* For each lone vertex-with-self-loop, process.
* Note that these are intermixed in the loop list.
* Each loop is either a wire-loop, or a vertex-with-self-loop.
* Only consider cases of vertex-with-self-loop here.
*
* This case has to be handled separately, because a wire-loop
* may be demoted to a set of wire-edges above, some of which
* may be retained. The non-retained wire-edges may in turn
* be demoted into vertex-with-self-loop objects above,
* which will be processed here.
*/
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
lu = BU_LIST_FIRST(loopuse, &s->lu_hd);
while (BU_LIST_NOT_HEAD(lu, &s->lu_hd)) {
NMG_CK_LOOPUSE(lu);
nextlu = BU_LIST_PNEXT(loopuse, lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_VERTEXUSE_MAGIC) {
/* ignore any remaining wire-loops */
lu = nextlu;
continue;
}
if (nextlu == lu->lumate_p)
nextlu = BU_LIST_PNEXT(loopuse, nextlu);
vu = BU_LIST_PNEXT(vertexuse, &lu->down_hd);
NMG_CK_VERTEXUSE(vu);
NMG_CK_VERTEX(vu->v_p);
switch (nmg_eval_action(&vu->v_p->magic, bs)) {
case BACTION_KILL:
/* Eliminate the loopuse, and mate */
nmg_klu(lu);
lu = nextlu;
continue;
case BACTION_RETAIN:
break;
default:
bu_bomb("nmg_eval_shell() bad BACTION\n");
}
lu = nextlu;
}
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
/*
* Final case: shell of a single vertexuse
*/
vu = s->vu_p;
if (vu) {
NMG_CK_VERTEXUSE(vu);
NMG_CK_VERTEX(vu->v_p);
switch (nmg_eval_action(&vu->v_p->magic, bs)) {
case BACTION_KILL:
nmg_kvu(vu);
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
s->vu_p = (struct vertexuse *)0; /* sanity */
break;
case BACTION_RETAIN:
break;
default:
bu_bomb("nmg_eval_shell() bad BACTION\n");
}
}
if (RTG.NMG_debug & DEBUG_VERIFY)
nmg_vshell(&s->r_p->s_hd, s->r_p);
nmg_eval_plot(bs, nmg_eval_count++); /* debug */
}
/**
* Evaluate a boolean operation on the two shells "A" and "B", of the
* form "answer = A op B". As input, each element (loop-in-face, wire
* loop, wire edge, vertex) in both A and B has been classified as
* being "in", "on", or "out" of the other shell. Using these
* classifications, operate on the input shells. At the end, shell A
* contains the resultant object, and shell B is destroyed.
*
*/
void
nmg_evaluate_boolean(struct shell *sA, struct shell *sB, int op, char **classlist, const struct bn_tol *tol)
{
int const *actions;
struct nmg_bool_state bool_state;
NMG_CK_SHELL(sA);
NMG_CK_SHELL(sB);
BN_CK_TOL(tol);
if (RTG.NMG_debug & DEBUG_BOOLEVAL) {
bu_log("nmg_evaluate_boolean(sA=%p, sB=%p, op=%d) START\n",
(void *)sA, (void *)sB, op);
}
switch (op) {
case NMG_BOOL_SUB:
actions = subtraction_actions;
nmg_invert_shell(sB); /* FLIP all faceuse normals */
break;
case NMG_BOOL_ADD:
actions = union_actions;
break;
case NMG_BOOL_ISECT:
actions = intersect_actions;
break;
default:
actions = union_actions; /* shut up lint */
bu_log("ERROR nmg_evaluate_boolean() op=%d.\n", op);
bu_bomb("bad boolean\n");
}
bool_state.bs_dest = sA;
bool_state.bs_src = sB;
bool_state.bs_classtab = classlist;
bool_state.bs_actions = actions;
bool_state.bs_tol = tol;
bool_state.bs_isA = 1;
nmg_eval_shell(sA, &bool_state);
bool_state.bs_isA = 0;
nmg_eval_shell(sB, &bool_state);
if (RTG.NMG_debug & DEBUG_BOOLEVAL) {
bu_log("nmg_evaluate_boolean(sA=%p, sB=%p, op=%d), evaluations done\n",
(void *)sA, (void *)sB, op);
}
/* Write sA and sB into separate files, if wanted? */
/* Move everything left in sB into sA. sB is killed. */
nmg_js(sA, sB, tol);
/* Plot the result */
if (RTG.NMG_debug & DEBUG_BOOLEVAL && RTG.NMG_debug & DEBUG_PLOTEM) {
FILE *fp;
if ((fp=fopen("bool_ans.plot3", "wb")) == (FILE *)NULL) {
(void)perror("bool_ans.plot3");
bu_bomb("unable to open bool_ans.plot3 for writing");
}
bu_log("plotting bool_ans.plot3\n");
nmg_pl_s(fp, sA);
(void)fclose(fp);
}
/* Remove loops/edges/vertices that appear more than once in result */
nmg_rm_redundancies(sA, tol);
}
static void
nmg_to_acad(struct nmgregion *r, const struct db_full_path *pathp, int region_id)
{
struct model *m;
struct shell *s;
struct vertex *v;
struct bu_ptbl verts;
char *region_name;
int numverts = 0; /* Number of vertices to output */
int numtri = 0; /* Number of triangles to output */
int tricount = 0; /* Triangle number */
int i;
NMG_CK_REGION(r);
RT_CK_FULL_PATH(pathp);
region_name = db_path_to_string(pathp);
m = r->m_p;
NMG_CK_MODEL(m);
/* triangulate model */
nmg_triangulate_model(m, &tol);
/* list all vertices in result */
nmg_vertex_tabulate(&verts, &r->l.magic);
/* Get number of vertices */
numverts = BU_PTBL_END (&verts);
/* BEGIN CHECK SECTION */
/* Check vertices */
for (i=0; i<numverts; i++) {
v = (struct vertex *)BU_PTBL_GET(&verts, i);
NMG_CK_VERTEX(v);
}
/* Check triangles */
for (BU_LIST_FOR(s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
int vert_count=0;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
/* check vertex numbers for each triangle */
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd)) {
NMG_CK_EDGEUSE(eu);
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
vert_count++;
i = bu_ptbl_locate(&verts, (long *)v);
if (i < 0) {
bu_ptbl_free(&verts);
bu_free(region_name, "region name");
bu_log("Vertex from eu %p is not in nmgregion %p\n", (void *)eu, (void *)r);
bu_exit(1, "ERROR: Triangle vertex was not located\n");
}
}
if (vert_count > 3) {
bu_ptbl_free(&verts);
bu_free(region_name, "region name");
bu_log("lu %p has too many (%d) vertices!\n", (void *)lu, vert_count);
bu_exit(1, "ERROR: LU is not a triangle\n");
} else if (vert_count < 3)
continue;
numtri++;
}
}
}
/* END CHECK SECTION */
/* Write pertinent info for this region */
fprintf(fp, "%s\n", (region_name+1));
/* No mirror plane */
fprintf(fp, "%d\n", 0);
/* Number of vertices */
fprintf(fp, "%d\n", numverts);
/* Write numverts, then vertices */
for (i=0; i<numverts; i++) {
v = (struct vertex *)BU_PTBL_GET(&verts, i);
NMG_CK_VERTEX(v);
if (inches)
fprintf(fp, "%f %f %f\n", V3ARGSIN(v->vg_p->coord));
else
fprintf(fp, "%f %f %f\n", V3ARGS(v->vg_p->coord));
}
/* Number of sub-parts (always 1 with BRL-CAD) */
fprintf(fp, "%d\n", 1);
/* Write out name again */
fprintf(fp, "%s\n", (region_name+1));
/* Number of triangles, number of vert/tri (3) */
fprintf(fp, "%d %d\n", numtri, 3);
/* output triangles */
for (BU_LIST_FOR(s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
int vert_count=0;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
/* list vertex numbers for each triangle */
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd)) {
NMG_CK_EDGEUSE(eu);
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
vert_count++;
i = bu_ptbl_locate(&verts, (long *)v);
if (i < 0) {
bu_ptbl_free(&verts);
bu_log("Vertex from eu %p is not in nmgregion %p\n", (void *)eu, (void *)r);
bu_free(region_name, "region name");
bu_exit(1, "ERROR: Can't find vertex in list!\n");
}
fprintf(fp, " %d", i+1);
}
/* Output other info. for triangle ICOAT, component#, facet# */
/* Map Icoat from material table later */
/* fprintf(fp, "%s icomp=%d material=%d:\n", (region_name+1), region_id);*/
fprintf(fp, " %d %d %d\n", 0, region_id, ++tricount);
if (vert_count > 3) {
bu_ptbl_free(&verts);
bu_free(region_name, "region name");
bu_log("lu %p has %d vertices!\n", (void *)lu, vert_count);
bu_exit(1, "ERROR: LU is not a triangle\n");
} else if (vert_count < 3)
continue;
tot_polygons++;
}
}
}
/* regions_converted++;
printf("Processed region %s\n", region_name);
printf("Regions attempted = %d Regions done = %d\n", regions_tried, regions_converted);
fflush(stdout);
*/
bu_ptbl_free(&verts);
bu_free(region_name, "region name");
}
static void
nmg_to_dxf(struct nmgregion *r, const struct db_full_path *pathp, int UNUSED(region_id), int UNUSED(material_id), float color[3])
{
struct model *m;
struct shell *s;
struct vertex *v;
struct bu_ptbl verts;
char *region_name;
int region_polys=0;
int tri_count=0;
int color_num;
int do_triangulate=0;
NMG_CK_REGION(r);
RT_CK_FULL_PATH(pathp);
region_name = db_path_to_string(pathp);
m = r->m_p;
NMG_CK_MODEL(m);
/* Count triangles */
for (BU_LIST_FOR(s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
int vert_count=0;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd)) {
vert_count++;
}
if (vert_count > 3) {
do_triangulate = 1;
goto triangulate;
}
tri_count++;
}
}
}
triangulate:
if (do_triangulate) {
/* triangulate model */
nmg_triangulate_model(m, &tol);
/* Count triangles */
tri_count = 0;
for (BU_LIST_FOR(s, shell, &r->s_hd)) {
struct faceuse *fu;
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
tri_count++;
}
}
}
}
nmg_vertex_tabulate(&verts, &r->l.magic);
color_num = find_closest_color(color);
if (polyface_mesh) {
size_t i;
fprintf(fp, "0\nPOLYLINE\n8\n%s\n62\n%d\n70\n64\n71\n%lu\n72\n%d\n",
region_name, color_num, (unsigned long)BU_PTBL_LEN(&verts), tri_count);
for (i = 0; i < BU_PTBL_LEN(&verts); i++) {
fprintf(fp, "0\nVERTEX\n8\n%s\n", region_name);
v = (struct vertex *)BU_PTBL_GET(&verts, i);
NMG_CK_VERTEX(v);
if (inches) {
fprintf(fp, "10\n%f\n20\n%f\n30\n%f\n70\n192\n", V3ARGSIN(v->vg_p->coord));
} else {
fprintf(fp, "10\n%f\n20\n%f\n30\n%f\n70\n192\n", V3ARGS(v->vg_p->coord));
}
}
}
/* Check triangles */
for (BU_LIST_FOR(s, shell, &r->s_hd)) {
struct faceuse *fu;
NMG_CK_SHELL(s);
for (BU_LIST_FOR(fu, faceuse, &s->fu_hd)) {
struct loopuse *lu;
NMG_CK_FACEUSE(fu);
if (fu->orientation != OT_SAME)
continue;
for (BU_LIST_FOR(lu, loopuse, &fu->lu_hd)) {
struct edgeuse *eu;
int vert_count=0;
NMG_CK_LOOPUSE(lu);
if (BU_LIST_FIRST_MAGIC(&lu->down_hd) != NMG_EDGEUSE_MAGIC)
continue;
if (polyface_mesh) {
fprintf(fp, "0\nVERTEX\n8\n%s\n70\n128\n10\n0.0\n20\n0.0\n30\n0.0\n",
region_name);
} else {
fprintf(fp, "0\n3DFACE\n8\n%s\n62\n%d\n", region_name, color_num);
}
/* check vertex numbers for each triangle */
for (BU_LIST_FOR(eu, edgeuse, &lu->down_hd)) {
NMG_CK_EDGEUSE(eu);
vert_count++;
v = eu->vu_p->v_p;
NMG_CK_VERTEX(v);
if (polyface_mesh) {
fprintf(fp, "%d\n%d\n",
vert_count+70, bu_ptbl_locate(&verts, (long *)v) + 1);
} else {
if (inches) {
fprintf(fp, "%d\n%f\n%d\n%f\n%d\n%f\n",
10 + vert_count - 1,
v->vg_p->coord[X] / 25.4,
20 + vert_count - 1,
v->vg_p->coord[Y] / 25.4,
30 + vert_count -1,
v->vg_p->coord[Z] / 25.4);
} else {
fprintf(fp, "%d\n%f\n%d\n%f\n%d\n%f\n",
10 + vert_count - 1,
v->vg_p->coord[X],
20 + vert_count - 1,
v->vg_p->coord[Y],
30 + vert_count -1,
v->vg_p->coord[Z]);
}
}
}
if (vert_count > 3) {
bu_free(region_name, "region name");
bu_log("lu %p has %d vertices!\n", (void *)lu, vert_count);
bu_exit(1, "ERROR: LU is not a triangle\n");
} else if (vert_count < 3) {
continue;
} else {
/* repeat the last vertex for the benefit of codes
* that interpret the dxf specification for
* 3DFACES as requiring a fourth vertex even when
* only three are input.
*/
if (!polyface_mesh) {
vert_count++;
if (inches) {
fprintf(fp, "%d\n%f\n%d\n%f\n%d\n%f\n",
10 + vert_count - 1,
v->vg_p->coord[X] / 25.4,
20 + vert_count - 1,
v->vg_p->coord[Y] / 25.4,
30 + vert_count -1,
v->vg_p->coord[Z] / 25.4);
} else {
fprintf(fp, "%d\n%f\n%d\n%f\n%d\n%f\n",
10 + vert_count - 1,
v->vg_p->coord[X],
20 + vert_count - 1,
v->vg_p->coord[Y],
30 + vert_count -1,
v->vg_p->coord[Z]);
}
}
}
tot_polygons++;
region_polys++;
}
}
}
bu_ptbl_free(&verts);
bu_free(region_name, "region name");
if (polyface_mesh) {
fprintf(fp, "0\nSEQEND\n");
}
}