Commit: 477a84a73888b012dc43f446651a64542d23e704
Author: Campbell Barton
Date: Fri Jan 17 17:16:41 2014 +1100
https://developer.blender.org/rB477a84a73888b012dc43f446651a64542d23e704
BMesh: minor optimization for remove doubles
- replace heap allocation with stack for small arrays.
- remove edge-lookup when its already known.
===================================================================
M source/blender/bmesh/operators/bmo_removedoubles.c
===================================================================
diff --git a/source/blender/bmesh/operators/bmo_removedoubles.c
b/source/blender/bmesh/operators/bmo_removedoubles.c
index beabca2..04831b8 100644
--- a/source/blender/bmesh/operators/bmo_removedoubles.c
+++ b/source/blender/bmesh/operators/bmo_removedoubles.c
@@ -30,6 +30,7 @@
#include "BLI_math.h"
#include "BLI_array.h"
+#include "BLI_alloca.h"
#include "BKE_customdata.h"
@@ -74,6 +75,88 @@ static void remdoubles_splitface(BMFace *f, BMesh *bm,
BMOperator *op, BMOpSlot
#define FACE_MARK 2
/**
+ * helper function for bmo_weld_verts_exec so we can use stack memory
+ */
+static void remdoubles_createface(BMesh *bm, BMFace *f, BMOpSlot
*slot_targetmap)
+{
+ BMIter liter;
+ BMFace *f_new;
+ BMEdge *e_new;
+
+ BMLoop *l;
+
+ BMEdge **edges = BLI_array_alloca(edges, f->len);
+ BMLoop **loops = BLI_array_alloca(loops, f->len);
+
+ STACK_DECLARE(edges);
+ STACK_DECLARE(loops);
+
+ STACK_INIT(edges);
+ STACK_INIT(loops);
+
+ BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) {
+ BMVert *v1 = l->v;
+ BMVert *v2 = l->next->v;
+
+ const bool is_del_v1 = BMO_elem_flag_test_bool(bm, v1, ELE_DEL);
+ const bool is_del_v2 = BMO_elem_flag_test_bool(bm, v2, ELE_DEL);
+
+ /* only search for a new edge if one of the verts is mapped */
+ if (is_del_v1 || is_del_v2) {
+ if (is_del_v1)
+ v1 = BMO_slot_map_elem_get(slot_targetmap, v1);
+ if (is_del_v2)
+ v2 = BMO_slot_map_elem_get(slot_targetmap, v2);
+
+ e_new = (v1 != v2) ? BM_edge_exists(v1, v2) : NULL;
+ }
+ else {
+ e_new = l->e;
+ }
+
+ if (e_new) {
+ unsigned int i;
+ for (i = 0; i < STACK_SIZE(edges); i++) {
+ if (edges[i] == e_new) {
+ break;
+ }
+ }
+ if (UNLIKELY(i != STACK_SIZE(edges))) {
+ continue;
+ }
+
+ STACK_PUSH(edges, e_new);
+ STACK_PUSH(loops, l);
+ }
+ }
+
+ if (STACK_SIZE(edges) >= 3) {
+ BMVert *v1 = loops[0]->v;
+ BMVert *v2 = loops[1]->v;
+
+ if (BMO_elem_flag_test(bm, v1, ELE_DEL)) {
+ v1 = BMO_slot_map_elem_get(slot_targetmap, v1);
+ }
+ if (BMO_elem_flag_test(bm, v2, ELE_DEL)) {
+ v2 = BMO_slot_map_elem_get(slot_targetmap, v2);
+ }
+
+ f_new = BM_face_create_ngon(bm, v1, v2, edges,
STACK_SIZE(edges), f, BM_CREATE_NO_DOUBLE);
+ BLI_assert(f_new != f);
+
+ if (f_new) {
+ unsigned int i;
+ BM_ITER_ELEM_INDEX (l, &liter, f_new, BM_LOOPS_OF_FACE,
i) {
+ BM_elem_attrs_copy(bm, bm, loops[i], l);
+ }
+ }
+ }
+
+ STACK_FREE(edges);
+ STACK_FREE(loops);
+}
+
+/**
* \note with 'targetmap', multiple 'keys' are currently supported, though no
callers should be using.
* (because slot maps currently use GHash without the GHASH_FLAG_ALLOW_DUPES
flag set)
*
@@ -81,22 +164,19 @@ static void remdoubles_splitface(BMFace *f, BMesh *bm,
BMOperator *op, BMOpSlot
void bmo_weld_verts_exec(BMesh *bm, BMOperator *op)
{
BMIter iter, liter;
- BMVert *v, *v2;
- BMEdge *e, *e_new, **edges = NULL;
- BLI_array_declare(edges);
- BMLoop *l, *l_new, **loops = NULL;
- BLI_array_declare(loops);
- BMFace *f, *f_new;
- int a, b;
+ BMVert *v1, *v2;
+ BMEdge *e;
+ BMLoop *l;
+ BMFace *f;
BMOpSlot *slot_targetmap = BMO_slot_get(op->slots_in, "targetmap");
/* mark merge verts for deletion */
- BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) {
- if ((v2 = BMO_slot_map_elem_get(slot_targetmap, v))) {
- BMO_elem_flag_enable(bm, v, ELE_DEL);
+ BM_ITER_MESH (v1, &iter, bm, BM_VERTS_OF_MESH) {
+ if ((v2 = BMO_slot_map_elem_get(slot_targetmap, v1))) {
+ BMO_elem_flag_enable(bm, v1, ELE_DEL);
/* merge the vertex flags, else we get randomly
selected/unselected verts */
- BM_elem_flag_merge(v, v2);
+ BM_elem_flag_merge(v1, v2);
}
}
@@ -107,18 +187,20 @@ void bmo_weld_verts_exec(BMesh *bm, BMOperator *op)
}
BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) {
- if (BMO_elem_flag_test(bm, e->v1, ELE_DEL) ||
BMO_elem_flag_test(bm, e->v2, ELE_DEL)) {
- v = BMO_slot_map_elem_get(slot_targetmap, e->v1);
- v2 = BMO_slot_map_elem_get(slot_targetmap, e->v2);
-
- if (!v) v = e->v1;
- if (!v2) v2 = e->v2;
-
- if (v == v2) {
+ const bool is_del_v1 = BMO_elem_flag_test_bool(bm, (v1 =
e->v1), ELE_DEL);
+ const bool is_del_v2 = BMO_elem_flag_test_bool(bm, (v2 =
e->v2), ELE_DEL);
+
+ if (is_del_v1 || is_del_v2) {
+ if (is_del_v1)
+ v1 = BMO_slot_map_elem_get(slot_targetmap, v1);
+ if (is_del_v2)
+ v2 = BMO_slot_map_elem_get(slot_targetmap, v2);
+
+ if (v1 == v2) {
BMO_elem_flag_enable(bm, e, EDGE_COL);
}
- else if (!BM_edge_exists(v, v2)) {
- BM_edge_create(bm, v, v2, e,
BM_CREATE_NO_DOUBLE);
+ else if (!BM_edge_exists(v1, v2)) {
+ BM_edge_create(bm, v1, v2, e,
BM_CREATE_NO_DOUBLE);
}
BMO_elem_flag_enable(bm, e, ELE_DEL);
@@ -150,68 +232,10 @@ void bmo_weld_verts_exec(BMesh *bm, BMOperator *op)
continue;
}
- BLI_array_empty(edges);
- BLI_array_empty(loops);
- a = 0;
- BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) {
- v = l->v;
- v2 = l->next->v;
- if (BMO_elem_flag_test(bm, v, ELE_DEL)) {
- v = BMO_slot_map_elem_get(slot_targetmap, v);
- }
- if (BMO_elem_flag_test(bm, v2, ELE_DEL)) {
- v2 = BMO_slot_map_elem_get(slot_targetmap, v2);
- }
-
- e_new = v != v2 ? BM_edge_exists(v, v2) : NULL;
- if (e_new) {
- for (b = 0; b < a; b++) {
- if (edges[b] == e_new) {
- break;
- }
- }
- if (b != a) {
- continue;
- }
-
- BLI_array_grow_one(edges);
- BLI_array_grow_one(loops);
-
- edges[a] = e_new;
- loops[a] = l;
-
- a++;
- }
- }
-
- if (BLI_array_count(loops) < 3)
- continue;
- v = loops[0]->v;
- v2 = loops[1]->v;
-
- if (BMO_elem_flag_test(bm, v, ELE_DEL)) {
- v = BMO_slot_map_elem_get(slot_targetmap, v);
- }
- if (BMO_elem_flag_test(bm, v2, ELE_DEL)) {
- v2 = BMO_slot_map_elem_get(slot_targetmap, v2);
- }
-
- f_new = BM_face_create_ngon(bm, v, v2, edges, a, f,
BM_CREATE_NO_DOUBLE);
- if (f_new && (f_new != f)) {
- a = 0;
- BM_ITER_ELEM (l, &liter, f_new, BM_LOOPS_OF_FACE) {
- l_new = loops[a];
- BM_elem_attrs_copy(bm, bm, l_new, l);
-
- a++;
- }
- }
+ remdoubles_createface(bm, f, slot_targetmap);
}
BMO_mesh_delete_oflag_context(bm, ELE_DEL, DEL_ONLYTAGGED);
-
- BLI_array_free(edges);
- BLI_array_free(loops);
}
static int vergaverco(const void *e1, const void *e2)
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