diff options
Diffstat (limited to 'source/blender/bmesh/operators/bmo_edgenet.c')
-rw-r--r-- | source/blender/bmesh/operators/bmo_edgenet.c | 1270 |
1 files changed, 1270 insertions, 0 deletions
diff --git a/source/blender/bmesh/operators/bmo_edgenet.c b/source/blender/bmesh/operators/bmo_edgenet.c new file mode 100644 index 00000000000..cf91dfd0f15 --- /dev/null +++ b/source/blender/bmesh/operators/bmo_edgenet.c @@ -0,0 +1,1270 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Joseph Eagar. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/bmesh/operators/bmo_edgenet.c + * \ingroup bmesh + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_listbase.h" +#include "BLI_math.h" +#include "BLI_array.h" +#include "BLI_smallhash.h" +#include "BLI_rand.h" +#include "BLI_heap.h" + +#include "bmesh.h" + +#include "intern/bmesh_operators_private.h" /* own include */ + +#define EDGE_MARK 1 +#define EDGE_VIS 2 + +#define FACE_NEW 1 + +#define ELE_NEW 1 +#define ELE_OUT 2 +#define ELE_ORIG 4 + +#define FACE_IGNORE 16 + +typedef struct EPathNode { + struct EPathNode *next, *prev; + BMVert *v; + BMEdge *e; + BMEdge *cure; +} EPathNode; + +typedef struct EPath { + ListBase nodes; + float weight; + int group; +} EPath; + +typedef struct PathBase { + BLI_mempool *nodepool, *pathpool; +} PathBase; + +typedef struct EdgeData { + int tag; + int ftag; + BMDiskLink v1_disk_link, v2_disk_link; +} EdgeData; + +typedef struct VertData { + BMEdge *e; + float no[3], offco[3], sco[3]; /* offco is vertex coordinate slightly offset randomly */ + int tag; +} VertData; + +static int count_edge_faces(BMesh *bm, BMEdge *e); + +/**** rotation system code * */ + +BLI_INLINE BMDiskLink *rs_edge_link_get(BMEdge *e, BMVert *v, EdgeData *e_data) +{ + return v == ((BMEdge *)e)->v1 ? &(((EdgeData *)e_data)->v1_disk_link) : + &(((EdgeData *)e_data)->v2_disk_link); +} + +static bool rotsys_append_edge(BMEdge *e, BMVert *v, + EdgeData *edata, VertData *vdata) +{ + EdgeData *ed = &edata[BM_elem_index_get(e)]; + VertData *vd = &vdata[BM_elem_index_get(v)]; + + if (!vd->e) { + Link *e1 = (Link *)rs_edge_link_get(e, v, ed); + + vd->e = e; + e1->next = e1->prev = (Link *)e; + } + else { + BMDiskLink *dl1, *dl2, *dl3; + EdgeData *ved = &edata[BM_elem_index_get(vd->e)]; + + dl1 = rs_edge_link_get(e, v, ed); + dl2 = rs_edge_link_get(vd->e, v, ved); + dl3 = dl2->prev ? rs_edge_link_get(dl2->prev, v, &edata[BM_elem_index_get(dl2->prev)]) : NULL; + + dl1->next = vd->e; + dl1->prev = dl2->prev; + + dl2->prev = e; + if (dl3) { + dl3->next = e; + } + } + + return true; +} + +static void UNUSED_FUNCTION(rotsys_remove_edge)(BMEdge *e, BMVert *v, + EdgeData *edata, VertData *vdata) +{ + EdgeData *ed = edata + BM_elem_index_get(e); + VertData *vd = vdata + BM_elem_index_get(v); + BMDiskLink *e1, *e2; + + e1 = rs_edge_link_get(e, v, ed); + if (e1->prev) { + e2 = rs_edge_link_get(e1->prev, v, ed); + e2->next = e1->next; + } + + if (e1->next) { + e2 = rs_edge_link_get(e1->next, v, ed); + e2->prev = e1->prev; + } + + if (vd->e == e) + vd->e = (e != e1->next) ? e1->next : NULL; + + e1->next = e1->prev = NULL; +} + +static BMEdge *rotsys_nextedge(BMEdge *e, BMVert *v, + EdgeData *edata, VertData *UNUSED(vdata)) +{ + if (v == e->v1) + return edata[BM_elem_index_get(e)].v1_disk_link.next; + if (v == e->v2) + return edata[BM_elem_index_get(e)].v2_disk_link.next; + return NULL; +} + +static BMEdge *rotsys_prevedge(BMEdge *e, BMVert *v, + EdgeData *edata, VertData *UNUSED(vdata)) +{ + if (v == e->v1) + return edata[BM_elem_index_get(e)].v1_disk_link.prev; + if (v == e->v2) + return edata[BM_elem_index_get(e)].v2_disk_link.prev; + return NULL; +} + +static void rotsys_reverse(BMEdge *UNUSED(e), BMVert *v, EdgeData *edata, VertData *vdata) +{ + BMEdge **edges = NULL; + BMEdge *e_first; + BMEdge *e; + BLI_array_staticdeclare(edges, BM_DEFAULT_NGON_STACK_SIZE); + int i, totedge; + + e = e_first = vdata[BM_elem_index_get(v)].e; + do { + BLI_array_append(edges, e); + e = rotsys_nextedge(e, v, edata, vdata); + } while (e != e_first); + + totedge = BLI_array_count(edges); + for (i = 0; i < totedge / 2; i++) { + SWAP(BMEdge *, edges[i], edges[totedge - 1 - i]); + } + + vdata[BM_elem_index_get(v)].e = NULL; + for (i = 0; i < totedge; i++) { + rotsys_append_edge(edges[i], v, edata, vdata); + } + + BLI_array_free(edges); +} + +static int UNUSED_FUNCTION(rotsys_count)(BMVert *v, EdgeData *edata, VertData *vdata) +{ + BMEdge *e = vdata[BM_elem_index_get(v)].e; + int i = 0; + + if (!e) + return 0; + + do { + if (!e) + return 0; + e = rotsys_nextedge(e, v, edata, vdata); + + if (i >= (1 << 20)) { + printf("bmesh error: infinite loop in disk cycle!\n"); + return 0; + } + + i += 1; + } while (e != vdata[BM_elem_index_get(v)].e); + + return i; +} + +static int UNUSED_FUNCTION(rotsys_fill_faces)(BMesh *bm, EdgeData *edata, VertData *vdata) +{ + BMIter iter; + BMEdge *e, **edges = NULL; + BLI_array_declare(edges); + BMVert *v, **verts = NULL; + BMFace *f; + BLI_array_declare(verts); + SmallHash visithash, *hash = &visithash; + int i; + + BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) { + BMEdge *e2, *starte; + BMVert *startv; + int rad, ok; + + rad = count_edge_faces(bm, e); + + if (rad < 2) { + starte = e; + } + else { + continue; + } + + /* do two passes, going forward then backward */ + for (i = 0; i < 2; i++) { + BLI_smallhash_init(hash); + + BLI_array_empty(verts); + BLI_array_empty(edges); + + startv = v = starte->v1; + e2 = starte; + ok = 1; + if (!v || !e2) + continue; + + do { + if (BLI_smallhash_haskey(hash, (intptr_t)e2) || + BLI_smallhash_haskey(hash, (intptr_t)v)) + { + ok = 0; + break; + } + + BLI_array_append(verts, v); + BLI_array_append(edges, e2); + + BLI_smallhash_insert(hash, (intptr_t)e2, NULL); + + v = BM_edge_other_vert(e2, v); + e2 = i ? rotsys_prevedge(e2, v, edata, vdata) : rotsys_nextedge(e2, v, edata, vdata); + } while (e2 != starte && v != startv); + + BLI_smallhash_release(hash); + + if (!ok || BLI_array_count(edges) < 3) + continue; + + f = BM_face_create_ngon(bm, verts[0], verts[1], edges, BLI_array_count(edges), BM_CREATE_NO_DOUBLE); + if (UNLIKELY(f == NULL)) { + continue; + } + } + } + + return 0; +} + +static void rotsys_make_consistent(BMesh *bm, EdgeData *edata, VertData *vdata) +{ + BMIter iter; + BMEdge *e; + BMVert *v, **stack = NULL; + BLI_array_declare(stack); + int i; + + for (i = 0; i < bm->totvert; i++) { + vdata[i].tag = 0; + } + + while (1) { + VertData *vd; + BMVert *startv = NULL; + float dis; + + v = BM_iter_new(&iter, bm, BM_VERTS_OF_MESH, NULL); + for (i = 0; i < bm->totvert; i++, BM_iter_step(&iter)) { + vd = vdata + BM_elem_index_get(v); + + if (vd->tag) + continue; + + if (!startv || dot_v3v3(vd->offco, vd->offco) > dis) { + dis = dot_v3v3(vd->offco, vd->offco); + startv = v; + } + } + + if (!startv) + break; + + vd = vdata + BM_elem_index_get(startv); + + BLI_array_empty(stack); + BLI_array_append(stack, startv); + + vd->tag = 1; + + while (BLI_array_count(stack)) { + v = BLI_array_pop(stack); + vd = vdata + BM_elem_index_get(v); + + if (!vd->e) + continue; + + e = vd->e; + do { + BMVert *v2 = BM_edge_other_vert(e, v); + VertData *vd2 = vdata + BM_elem_index_get(v2); + + if (dot_v3v3(vd->no, vd2->no) < 0.0f + FLT_EPSILON * 2) { + rotsys_reverse(e, v2, edata, vdata); + mul_v3_fl(vd2->no, -1.0f); + } + + if (!vd2->tag) { + BLI_array_append(stack, v2); + vd2->tag = 1; + } + + e = rotsys_nextedge(e, v, edata, vdata); + } while (e != vd->e); + } + } + + BLI_array_free(stack); +} + +static void init_rotsys(BMesh *bm, EdgeData *edata, VertData *vdata) +{ + BMIter iter; + BMEdge *e; + BMEdge **edges = NULL; + BLI_array_staticdeclare(edges, BM_DEFAULT_NGON_STACK_SIZE); + BMVert *v; + /* BMVert **verts = NULL; */ + /* BLI_array_staticdeclare(verts, BM_DEFAULT_NGON_STACK_SIZE); */ /* UNUSE */ + int i; + + BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) { + BMIter eiter; + float no[3], cent[3]; + int j, k = 0, totedge = 0; + + if (BM_elem_index_get(v) == -1) + continue; + + BLI_array_empty(edges); + + BM_ITER_ELEM (e, &eiter, v, BM_EDGES_OF_VERT) { + if (BMO_elem_flag_test(bm, e, EDGE_MARK)) { + BLI_array_append(edges, e); + totedge++; + } + } + + copy_v3_v3(cent, v->co); + + zero_v3(no); + for (i = 0; i < totedge; i++) { + BMEdge *e1, *e2; + float cno[3], vec1[3], vec2[3]; + + e1 = edges[i]; + e2 = edges[(i + 1) % totedge]; + + sub_v3_v3v3(vec1, (BM_edge_other_vert(e1, v))->co, v->co); + sub_v3_v3v3(vec2, (BM_edge_other_vert(e2, v))->co, v->co); + + cross_v3_v3v3(cno, vec1, vec2); + normalize_v3(cno); + + if (i && dot_v3v3(cno, no) < 0.0f + FLT_EPSILON * 10) + mul_v3_fl(cno, -1.0f); + + add_v3_v3(no, cno); + normalize_v3(no); + } + + /* generate plane-flattened coordinates */ + for (i = 0; i < totedge; i++) { + BMEdge *e1; + BMVert *v2; + float cvec[3], vec1[3]; + + e1 = edges[i]; + v2 = BM_edge_other_vert(e1, v); + + sub_v3_v3v3(vec1, v2->co, v->co); + + cross_v3_v3v3(cvec, vec1, no); + cross_v3_v3v3(vec1, cvec, no); + normalize_v3(vec1); + + mul_v3_fl(vec1, len_v3v3(v2->co, v->co)); + add_v3_v3(vec1, v->co); + + copy_v3_v3(vdata[BM_elem_index_get(v2)].sco, vec1); + } + + BLI_srandom(0); + + /* first, ensure no 0 or 180 angles between adjacent + * (and that adjacent's adjacent) edges */ + for (i = 0, k = 0; i < totedge; i++) { + BMEdge *e1, *e2, *e3 = NULL; + BMVert *v1, *v2, *v3; + VertData *vd1, *vd2, *vd3; + float vec1[3], vec2[3], vec3[3], size; + int s1, s2, s3; + + if (totedge < 3) + continue; + + e1 = edges[(i + totedge - 1) % totedge]; + e2 = edges[i]; + e3 = edges[(i + 1) % totedge]; + + v1 = BM_edge_other_vert(e1, v); + v2 = BM_edge_other_vert(e2, v); + v3 = BM_edge_other_vert(e3, v); + + vd1 = vdata + BM_elem_index_get(v1); + vd2 = vdata + BM_elem_index_get(v2); + vd3 = vdata + BM_elem_index_get(v3); + + sub_v3_v3v3(vec1, vd1->sco, cent); + sub_v3_v3v3(vec2, vd2->sco, cent); + sub_v3_v3v3(vec3, vd3->sco, cent); + + size = (len_v3(vec1) + len_v3(vec3)) * 0.01f; + normalize_v3(vec1); normalize_v3(vec2); normalize_v3(vec3); + +#ifdef STRAIGHT +#undef STRAIGHT +#endif +#define STRAIGHT(vec11, vec22) (fabsf(dot_v3v3((vec11), (vec22))) > 1.0f - ((float)FLT_EPSILON * 1000.0f)) + + s1 = STRAIGHT(vec1, vec2); s2 = STRAIGHT(vec2, vec3); s3 = STRAIGHT(vec1, vec3); + + if (s1 || s2 || s3) { + copy_v3_v3(cent, v->co); + + for (j = 0; j < 3; j++) { + float fac = (BLI_frand() - 0.5f) * size; + cent[j] += fac; + } + + if (k < 2000) { + i = 0; + k++; + continue; + } + else { + k++; + continue; + } + + } + } + + copy_v3_v3(vdata[BM_elem_index_get(v)].offco, cent); + //copy_v3_v3(v->co, cent); + + /* now, sort edges so the triangle fan of all edges + * has a consistent normal. this is the same as + * sorting by polar coordinates along a group normal */ + for (j = 0; j < totedge; j++) { + for (i = 0; i < totedge; i++) { + BMEdge *e1, *e2, *e3 = NULL; + BMVert *v1, *v2, *v3; + VertData *vd1, *vd2, *vd3; + float vec1[3], vec2[3], vec3[3], n1[3], n2[3], n3[3]; + + e1 = edges[(i + totedge - 1) % totedge]; + e2 = edges[i]; + e3 = edges[(i + 1) % totedge]; + + v1 = BM_edge_other_vert(e1, v); + v2 = BM_edge_other_vert(e2, v); + v3 = BM_edge_other_vert(e3, v); + + vd1 = vdata + BM_elem_index_get(v1); + vd2 = vdata + BM_elem_index_get(v2); + vd3 = vdata + BM_elem_index_get(v3); + + sub_v3_v3v3(vec1, vd1->sco, cent); + sub_v3_v3v3(vec2, vd2->sco, cent); + sub_v3_v3v3(vec3, vd3->sco, cent); + + cross_v3_v3v3(n1, vec1, vec2); + cross_v3_v3v3(n2, vec2, vec3); + cross_v3_v3v3(n3, vec1, vec3); + + /* this case happens often enough and probably not worth bothering users with, + * maybe enable for debugging code but not for everyday use - campbell */ +#if 0 + /* Other way to determine if two vectors approach are (nearly) parallel: the + * cross product of the two vectors will approach zero */ + { + int s1, s2, s3; + s1 = (dot_v3v3(n1, n1) < (0.0f + FLT_EPSILON * 10)); + s2 = (dot_v3v3(n2, n2) < (0.0f + FLT_EPSILON * 10)); + s3 = (totedge < 3) ? 0 : (dot_v3v3(n3, n3) < (0.0f + FLT_EPSILON * 10)); + + if (s1 || s2 || s3) { + fprintf(stderr, "%s: s1: %d, s2: %d, s3: %dx (bmesh internal error)\n", __func__, s1, s2, s3); + } + } +#endif + + normalize_v3(n1); normalize_v3(n2); normalize_v3(n3); + + + if (dot_v3v3(n1, n2) < 0.0f) { + if (dot_v3v3(n1, n3) >= 0.0f + FLT_EPSILON * 10) { + SWAP(BMEdge *, edges[i], edges[(i + 1) % totedge]); + } + else { + SWAP(BMEdge *, edges[(i + totedge - 1) % totedge], edges[(i + 1) % totedge]); + SWAP(BMEdge *, edges[i], edges[(i + 1) % totedge]); + } + } + } + } + +#undef STRAIGHT + + zero_v3(no); + + /* yay, edges are sorted */ + for (i = 0; i < totedge; i++) { + BMEdge *e1 = edges[i], *e2 = edges[(i + 1) % totedge]; + float eno[3]; + + normal_tri_v3(eno, BM_edge_other_vert(e1, v)->co, v->co, BM_edge_other_vert(e2, v)->co); + add_v3_v3(no, eno); + + rotsys_append_edge(edges[i], v, edata, vdata); + } + + normalize_v3(no); + copy_v3_v3(vdata[BM_elem_index_get(v)].no, no); + } + + /* now, make sure rotation system is topologically consistent + * (e.g. vert normals consistently point either inside or outside) */ + rotsys_make_consistent(bm, edata, vdata); + + //rotsys_fill_faces(bm, edata, vdata); + +#if 0 + /* create visualizing geometry */ + BMVert *lastv; + BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) { + BMVert *v2; + BMFace *f; + int totedge = BM_vert_edge_count(v); + + if (BM_elem_index_get(v) == -1) + continue; + + //cv = BM_vert_create(bm, cent, v); + //BM_elem_index_set(cv, -1); /* set_dirty! */ + i = 0; + e = vdata[BM_elem_index_get(v)].e; + lastv = NULL; + do { + BMEdge *e2; + BMVert *v2; + float f = ((float)i / (float)totedge) * 0.35 + 0.05; + float co[3]; + + if (!e) + break; + + if (!BM_edge_other_vert(e, v)) + continue; + + sub_v3_v3v3(co, (BM_edge_other_vert(e, v))->co, vdata[BM_elem_index_get(v)].offco); + mul_v3_fl(co, f); + add_v3_v3(co, vdata[BM_elem_index_get(v)].offco); + + v2 = BM_vert_create(bm, co, NULL); + BM_elem_index_set(v2, -1); /* set_dirty! */ + //BM_edge_create(bm, cv, v2, NULL, 0); + + BM_vert_select_set(bm, v2, true); + if (lastv) { + e2 = BM_edge_create(bm, lastv, v2, NULL, 0); + BM_edge_select_set(bm, e2, true); + } + + lastv = v2; + + e = rotsys_nextedge(e, v, edata, vdata); + i++; + } while (e != vdata[BM_elem_index_get(v)].e); + } +#endif + + BLI_array_free(edges); +} + +static PathBase *edge_pathbase_new(void) +{ + PathBase *pb = MEM_callocN(sizeof(PathBase), "PathBase"); + + pb->nodepool = BLI_mempool_create(sizeof(EPathNode), 1, 512, BLI_MEMPOOL_SYSMALLOC); + pb->pathpool = BLI_mempool_create(sizeof(EPath), 1, 512, BLI_MEMPOOL_SYSMALLOC); + + return pb; +} + +static void edge_pathbase_free(PathBase *pathbase) +{ + BLI_mempool_destroy(pathbase->nodepool); + BLI_mempool_destroy(pathbase->pathpool); + MEM_freeN(pathbase); +} + +static EPath *edge_copy_add_path(PathBase *pb, EPath *path, BMVert *appendv, BMEdge *e) +{ + EPath *path2; + EPathNode *node, *node2; + + path2 = BLI_mempool_alloc(pb->pathpool); + path2->nodes.first = path2->nodes.last = NULL; + path2->weight = 0.0f; + path2->group = path->group; + + for (node = path->nodes.first; node; node = node->next) { + node2 = BLI_mempool_alloc(pb->nodepool); + *node2 = *node; + BLI_addtail(&path2->nodes, node2); + } + + node2 = BLI_mempool_alloc(pb->nodepool); + node2->v = appendv; + node2->e = e; + node2->cure = NULL; + + BLI_addtail(&path2->nodes, node2); + + return path2; +} + +static EPath *edge_path_new(PathBase *pb, BMVert *start, BMEdge *starte) +{ + EPath *path; + EPathNode *node; + + path = BLI_mempool_alloc(pb->pathpool); + node = BLI_mempool_alloc(pb->nodepool); + + path->nodes.first = path->nodes.last = NULL; + + node->v = start; + node->e = starte; + node->cure = NULL; + + BLI_addtail(&path->nodes, node); + path->weight = 0.0f; + + return path; +} + +static float edge_weight_path(EPath *path, EdgeData *edata, VertData *UNUSED(vdata)) +{ + EPathNode *node, *first = path->nodes.first; + float w = 0.0; + + for (node = path->nodes.first; node; node = node->next) { + if (node->e && node != path->nodes.first) { + w += edata[BM_elem_index_get(node->e)].ftag; + if (node->prev) { + /* BMESH_TOD */ + (void)first; + //w += len_v3v3(node->v->co, first->e->v1->co) * 0.0001f; + //w += len_v3v3(node->v->co, first->e->v2->co) * 0.0001f; + } + } + + w += 1.0f; + } + + return w; +} + + +static void edge_free_path(PathBase *pathbase, EPath *path) +{ + EPathNode *node, *next; + + for (node = path->nodes.first; node; node = next) { + next = node->next; + BLI_mempool_free(pathbase->nodepool, node); + } + + BLI_mempool_free(pathbase->pathpool, path); +} + +static EPath *edge_find_shortest_path(BMesh *bm, BMOperator *op, BMEdge *edge, EdgeData *edata, + VertData *vdata, PathBase *pathbase, int group) +{ + BMEdge *e; + GHash *gh = BLI_ghash_ptr_new("createops find shortest path"); + BMVert *v1, *v2; + BMVert **verts = NULL; + BLI_array_staticdeclare(verts, 1024); + Heap *heap = BLI_heap_new(); + EPath *path = NULL, *path2; + BMVert *startv; + BMVert *endv; + EPathNode *node; + int i; + const bool use_restrict = BMO_slot_bool_get(op->slots_in, "use_restrict"); + BMOpSlot *slot_restrict = BMO_slot_get(op->slots_in, "restrict"); + + + startv = edata[BM_elem_index_get(edge)].ftag ? edge->v2 : edge->v1; + endv = edata[BM_elem_index_get(edge)].ftag ? edge->v1 : edge->v2; + + path = edge_path_new(pathbase, startv, edge); + BLI_ghash_insert(gh, startv, NULL); + BLI_heap_insert(heap, path->weight, path); + path->group = group; + + while (BLI_heap_size(heap)) { + VertData *vd; + EPathNode *last; + BMFace *f = NULL; + + path = BLI_heap_popmin(heap); + last = path->nodes.last; + v1 = last->v; + + if (v1 == endv) { + /* make sure this path loop doesn't already exists */ + i = 0; + BLI_array_empty(verts); + for (i = 0, node = path->nodes.first; node; node = node->next, i++) { + BLI_array_grow_one(verts); + verts[i] = node->v; + } + + if (BM_face_exists(verts, i, &f)) { + if (!BMO_elem_flag_test(bm, f, FACE_IGNORE)) { + BLI_ghash_remove(gh, endv, NULL, NULL); + continue; + } + } + break; + } + + vd = vdata + BM_elem_index_get(v1); + if (!vd->e) + continue; + + v2 = NULL; + while (1) { + if (!last->cure) { + last->cure = e = vdata[BM_elem_index_get(last->v)].e; + } + else { + last->cure = e = rotsys_nextedge(last->cure, last->v, edata, vdata); + if (last->cure == vdata[BM_elem_index_get(last->v)].e) { + v2 = NULL; + break; + } + } + + if (e == edge || !BMO_elem_flag_test(bm, e, EDGE_MARK)) { + continue; + } + + v2 = BM_edge_other_vert(e, last->v); + + if (BLI_ghash_haskey(gh, v2)) { + v2 = NULL; + continue; + } + + if (use_restrict) { + int *group_flag = (int *)BMO_slot_map_data_get(slot_restrict, e); + if (group_flag) { + if (!(*group_flag & path->group)) { + v2 = NULL; + continue; + } + } + } + + break; + } + + if (!v2) { + if (path) { + edge_free_path(pathbase, path); + path = NULL; + } + continue; + } + + /* add path back into heap */ + BLI_heap_insert(heap, path->weight, path); + + /* put v2 in gh ma */ + BLI_ghash_insert(gh, v2, NULL); + + path2 = edge_copy_add_path(pathbase, path, v2, e); + path2->weight = edge_weight_path(path2, edata, vdata); + + BLI_heap_insert(heap, path2->weight, path2); + } + + if (path && ((EPathNode *)path->nodes.last)->v != endv) { + edge_free_path(pathbase, path); + path = NULL; + } + + BLI_array_free(verts); + BLI_heap_free(heap, NULL); + BLI_ghash_free(gh, NULL, NULL); + + return path; +} + +static int count_edge_faces(BMesh *bm, BMEdge *e) +{ + int i = 0; + BMLoop *l = e->l; + + if (!l) { + return 0; + } + + do { + if (!BMO_elem_flag_test(bm, l->f, FACE_IGNORE)) { + i++; + } + + l = l->radial_next; + } while (l != e->l); + + return i; +} + +BLI_INLINE void vote_on_winding(BMEdge *edge, EPathNode *node, unsigned int winding[2]) +{ + BMVert *test_v1, *test_v2; + /* we want to use the reverse winding to the existing order */ + BM_edge_ordered_verts(edge, &test_v2, &test_v1); + + /* edges vote on which winding wins out */ + winding[(test_v1 == node->v)]++; +} + +void bmo_edgenet_fill_exec(BMesh *bm, BMOperator *op) +{ + BMIter iter; + BMOIter siter; + BMFace *f; + BMEdge *e; + BMVert **verts = NULL; + BLI_array_declare(verts); + EPath *path; + EPathNode *node; + EdgeData *edata; + VertData *vdata; + BMEdge **edges = NULL; + PathBase *pathbase; + BLI_array_declare(edges); + const bool use_restrict = BMO_slot_bool_get(op->slots_in, "use_restrict"); + const bool use_fill_check = BMO_slot_bool_get(op->slots_in, "use_fill_check"); + const short mat_nr = BMO_slot_int_get(op->slots_in, "mat_nr"); + const bool use_smooth = BMO_slot_bool_get(op->slots_in, "use_smooth"); + int i, j; + unsigned int winding[2]; /* accumulte winding directions for each edge which has a face */ + BMOpSlot *slot_restrict = BMO_slot_get(op->slots_in, "restrict"); + BMOpSlot *slot_face_groupmap_out = BMO_slot_get(op->slots_out, "face_groupmap.out"); + + if (!bm->totvert || !bm->totedge) + return; + + pathbase = edge_pathbase_new(); + + edata = MEM_callocN(sizeof(EdgeData) * bm->totedge, "EdgeData"); + vdata = MEM_callocN(sizeof(VertData) * bm->totvert, "VertData"); + + BMO_slot_buffer_flag_enable(bm, op->slots_in, "edges", BM_EDGE, EDGE_MARK); + BMO_slot_buffer_flag_enable(bm, op->slots_in, "exclude_faces", BM_FACE, FACE_IGNORE); + + BM_mesh_elem_index_ensure(bm, BM_VERT); + + BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) { + BMO_elem_flag_enable(bm, f, ELE_ORIG); + } + + BM_ITER_MESH_INDEX (e, &iter, bm, BM_EDGES_OF_MESH, i) { + BM_elem_index_set(e, i); /* set_inline */ + + if (!BMO_elem_flag_test(bm, e, EDGE_MARK)) { + edata[i].tag = 2; + } + } + bm->elem_index_dirty &= ~BM_EDGE; + + init_rotsys(bm, edata, vdata); + + while (1) { + BMEdge *edge = NULL; + int group = 0; + + BMO_ITER (e, &siter, op->slots_in, "edges", BM_EDGE) { + /* if restrict is on, only start on faces in the restrict map */ + if (use_restrict && !BMO_slot_map_contains(slot_restrict, e)) + continue; + + if (edata[BM_elem_index_get(e)].tag < 2) { + edge = e; + + if (use_restrict) { + int gi_iter = 0, gi_count = 0, gi = 0; + + group = BMO_slot_map_int_get(slot_restrict, e); + + for (gi_iter = 0; gi_iter < 30; gi_iter++) { + if (group & (1 << gi_iter)) { + gi_count++; + gi = gi_iter; + + if (gi_count - 1 == edata[BM_elem_index_get(e)].tag) { + break; + } + } + } + + group = (1 << gi); + } + + break; + } + } + + if (!edge) + break; + + edata[BM_elem_index_get(edge)].tag += 1; + + path = edge_find_shortest_path(bm, op, edge, edata, vdata, pathbase, group); + if (!path) + continue; + + winding[0] = winding[1] = 0; + + BLI_array_empty(edges); + BLI_array_empty(verts); + i = 0; + for (node = path->nodes.first; node; node = node->next) { + if (!node->next) + continue; + + e = BM_edge_exists(node->v, node->next->v); + + /* this should never happe */ + if (!e) + break; + + /* check on the winding */ + if (e->l) { + vote_on_winding(e, node, winding); + } + + edata[BM_elem_index_get(e)].ftag++; + BLI_array_grow_one(edges); + edges[i++] = e; + + BLI_array_append(verts, node->v); + } + + if (edge->l) { + vote_on_winding(edge, path->nodes.last, winding); + } + + BLI_array_grow_one(edges); + edges[i++] = edge; + edata[BM_elem_index_get(edge)].ftag++; + + for (j = 0; j < i; j++) { + if (count_edge_faces(bm, edges[j]) >= 2) { + edge_free_path(pathbase, path); + break; + } + } + + if (j != i) { + continue; + } + + if (i) { + BMVert *v1, *v2; + + /* to define the winding order must select first edge, + * otherwise we could leave this as-is */ + edge = edges[0]; + + /* if these are even it doesn't really matter what to do, + * with consistent geometry one will be zero, the choice is clear */ + if (winding[0] < winding[1]) { + v1 = verts[0]; + v2 = verts[1]; + } + else { + v1 = verts[1]; + v2 = verts[0]; + } + + if ((use_fill_check == false) || + /* fairly expensive check - see if there are already faces filling this area */ + (BM_face_exists_multi_edge(edges, i) == false)) + { + f = BM_face_create_ngon(bm, v1, v2, edges, i, BM_CREATE_NO_DOUBLE); + if (f && !BMO_elem_flag_test(bm, f, ELE_ORIG)) { + BMO_elem_flag_enable(bm, f, FACE_NEW); + f->mat_nr = mat_nr; + if (use_smooth) { + BM_elem_flag_enable(f, BM_ELEM_SMOOTH); + } + } + + if (use_restrict) { + BMO_slot_map_int_insert(op, slot_face_groupmap_out, f, path->group); + } + } + } + + edge_free_path(pathbase, path); + } + + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "faces.out", BM_FACE, FACE_NEW); + + BLI_array_free(edges); + BLI_array_free(verts); + edge_pathbase_free(pathbase); + MEM_freeN(edata); + MEM_freeN(vdata); +} + +static BMEdge *edge_next(BMesh *bm, BMEdge *e) +{ + BMIter iter; + BMEdge *e2; + int i; + + for (i = 0; i < 2; i++) { + BM_ITER_ELEM (e2, &iter, i ? e->v2 : e->v1, BM_EDGES_OF_VERT) { + if ((BMO_elem_flag_test(bm, e2, EDGE_MARK)) && + (!BMO_elem_flag_test(bm, e2, EDGE_VIS)) && + (e2 != e)) + { + return e2; + } + } + } + + return NULL; +} + +void bmo_edgenet_prepare_exec(BMesh *bm, BMOperator *op) +{ + BMOIter siter; + BMEdge *e; + BMEdge **edges1 = NULL, **edges2 = NULL, **edges; + BLI_array_declare(edges1); + BLI_array_declare(edges2); + BLI_array_declare(edges); + int ok = 1; + int i, count; + + BMO_slot_buffer_flag_enable(bm, op->slots_in, "edges", BM_EDGE, EDGE_MARK); + + /* validate that each edge has at most one other tagged edge in the + * disk cycle around each of it's vertices */ + BMO_ITER (e, &siter, op->slots_in, "edges", BM_EDGE) { + for (i = 0; i < 2; i++) { + count = BMO_iter_elem_count_flag(bm, BM_EDGES_OF_VERT, (i ? e->v2 : e->v1), EDGE_MARK, true); + if (count > 2) { + ok = 0; + break; + } + } + + if (!ok) { + break; + } + } + + /* we don't have valid edge layouts, retur */ + if (!ok) { + return; + } + + /* find connected loops within the input edge */ + count = 0; + while (1) { + BMO_ITER (e, &siter, op->slots_in, "edges", BM_EDGE) { + if (!BMO_elem_flag_test(bm, e, EDGE_VIS)) { + if (BMO_iter_elem_count_flag(bm, BM_EDGES_OF_VERT, e->v1, EDGE_MARK, true) == 1 || + BMO_iter_elem_count_flag(bm, BM_EDGES_OF_VERT, e->v2, EDGE_MARK, true) == 1) + { + break; + } + } + } + + if (!e) { + break; + } + + if (!count) { + edges = edges1; + } + else if (count == 1) { + edges = edges2; + } + else { + break; + } + + i = 0; + while (e) { + BMO_elem_flag_enable(bm, e, EDGE_VIS); + BLI_array_grow_one(edges); + edges[i] = e; + + e = edge_next(bm, e); + i++; + } + + if (!count) { + edges1 = edges; + BLI_array_length_set(edges1, BLI_array_count(edges)); + } + else { + edges2 = edges; + BLI_array_length_set(edges2, BLI_array_count(edges)); + } + + BLI_array_empty(edges); + count++; + } + + if (edges1 && BLI_array_count(edges1) > 2 && + BM_edge_share_vert_check(edges1[0], edges1[BLI_array_count(edges1) - 1])) + { + if (edges2 && BLI_array_count(edges2) > 2 && + BM_edge_share_vert_check(edges2[0], edges2[BLI_array_count(edges2) - 1])) + { + BLI_array_free(edges1); + BLI_array_free(edges2); + return; + } + else { + edges1 = edges2; + edges2 = NULL; + } + } + + if (edges2 && BLI_array_count(edges2) > 2 && + BM_edge_share_vert_check(edges2[0], edges2[BLI_array_count(edges2) - 1])) + { + edges2 = NULL; + } + + /* two unconnected loops, connect the */ + if (edges1 && edges2) { + BMVert *v1, *v2, *v3, *v4; + float dvec1[3]; + float dvec2[3]; + + if (BLI_array_count(edges1) == 1) { + v1 = edges1[0]->v1; + v2 = edges1[0]->v2; + } + else { + v1 = BM_vert_in_edge(edges1[1], edges1[0]->v1) ? edges1[0]->v2 : edges1[0]->v1; + i = BLI_array_count(edges1) - 1; + v2 = BM_vert_in_edge(edges1[i - 1], edges1[i]->v1) ? edges1[i]->v2 : edges1[i]->v1; + } + + if (BLI_array_count(edges2) == 1) { + v3 = edges2[0]->v1; + v4 = edges2[0]->v2; + } + else { + v3 = BM_vert_in_edge(edges2[1], edges2[0]->v1) ? edges2[0]->v2 : edges2[0]->v1; + i = BLI_array_count(edges2) - 1; + v4 = BM_vert_in_edge(edges2[i - 1], edges2[i]->v1) ? edges2[i]->v2 : edges2[i]->v1; + } + + /* if there is ever bow-tie quads between two edges the problem is here! [#30367] */ +#if 0 + normal_tri_v3(dvec1, v1->co, v2->co, v4->co); + normal_tri_v3(dvec2, v1->co, v4->co, v3->co); +#else + { + /* save some CPU cycles and skip the sqrt and 1 subtraction */ + float a1[3], a2[3], a3[3]; + sub_v3_v3v3(a1, v1->co, v2->co); + sub_v3_v3v3(a2, v1->co, v4->co); + sub_v3_v3v3(a3, v1->co, v3->co); + cross_v3_v3v3(dvec1, a1, a2); + cross_v3_v3v3(dvec2, a2, a3); + } +#endif + if (dot_v3v3(dvec1, dvec2) < 0.0f) { + SWAP(BMVert *, v3, v4); + } + + e = BM_edge_create(bm, v1, v3, NULL, BM_CREATE_NO_DOUBLE); + BMO_elem_flag_enable(bm, e, ELE_NEW); + e = BM_edge_create(bm, v2, v4, NULL, BM_CREATE_NO_DOUBLE); + BMO_elem_flag_enable(bm, e, ELE_NEW); + } + else if (edges1) { + BMVert *v1, *v2; + + if (BLI_array_count(edges1) > 1) { + v1 = BM_vert_in_edge(edges1[1], edges1[0]->v1) ? edges1[0]->v2 : edges1[0]->v1; + i = BLI_array_count(edges1) - 1; + v2 = BM_vert_in_edge(edges1[i - 1], edges1[i]->v1) ? edges1[i]->v2 : edges1[i]->v1; + e = BM_edge_create(bm, v1, v2, NULL, BM_CREATE_NO_DOUBLE); + BMO_elem_flag_enable(bm, e, ELE_NEW); + } + } + + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "edges.out", BM_EDGE, ELE_NEW); + + BLI_array_free(edges1); + BLI_array_free(edges2); +} |