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);
}
Exemplo n.º 3
0
/**
 * 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;
}
Exemplo n.º 4
0
/**
 * 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;
}
Exemplo n.º 5
0
/*
 * 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;
}
Exemplo n.º 6
0
/* 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, &reg->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 {
Exemplo n.º 8
0
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" );
		}
	    }
	}
    }
Exemplo n.º 9
0
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);
}
Exemplo n.º 10
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, &reg->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;
}
Exemplo n.º 11
0
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, &reg->s_hd );
	while ( BU_LIST_NOT_HEAD( s, &reg->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;
	}
    }
}
Exemplo n.º 12
0
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");
}
Exemplo n.º 13
0
/**
 * 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 */
}
Exemplo n.º 14
0
/**
 * 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);
}
Exemplo n.º 15
0
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");
}
Exemplo n.º 16
0
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");
    }

}