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Edit Mesh: multi-object support for 'Decimate Geometry'

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This commit is contained in:
Thomas Beck
2018-04-19 00:30:05 +02:00
parent 7c415e6fd7
commit 5b45d32f3a
1 changed files with 92 additions and 82 deletions
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174
source/blender/editors/mesh/editmesh_tools.c
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@@ -4354,10 +4354,6 @@ void MESH_OT_tris_convert_to_quads(wmOperatorType *ot)
static int edbm_decimate_exec(bContext *C, wmOperator *op)
{
Object *obedit = CTX_data_edit_object(C);
BMEditMesh *em = BKE_editmesh_from_object(obedit);
BMesh *bm = em->bm;
const float ratio = RNA_float_get(op->ptr, "ratio");
bool use_vertex_group = RNA_boolean_get(op->ptr, "use_vertex_group");
const float vertex_group_factor = RNA_float_get(op->ptr, "vertex_group_factor");
@@ -4371,95 +4367,109 @@ static int edbm_decimate_exec(bContext *C, wmOperator *op)
return OPERATOR_FINISHED;
}
float *vweights = MEM_mallocN(sizeof(*vweights) * bm->totvert, __func__);
{
const int cd_dvert_offset = CustomData_get_offset(&bm->vdata, CD_MDEFORMVERT);
const int defbase_act = obedit->actdef - 1;
ViewLayer *view_layer = CTX_data_view_layer(C);
uint objects_len = 0;
Object **objects = BKE_view_layer_array_from_objects_in_edit_mode_unique_data(view_layer, &objects_len);
if (use_vertex_group && (cd_dvert_offset == -1)) {
BKE_report(op->reports, RPT_WARNING, "No active vertex group");
use_vertex_group = false;
for (uint ob_index = 0; ob_index < objects_len; ob_index++)
{
Object *obedit = objects[ob_index];
BMEditMesh *em = BKE_editmesh_from_object(obedit);
BMesh *bm = em->bm;
if (bm->totedgesel == 0) {
continue;
}
BMIter iter;
BMVert *v;
int i;
BM_ITER_MESH_INDEX (v, &iter, bm, BM_VERTS_OF_MESH, i) {
float weight = 0.0f;
if (BM_elem_flag_test(v, BM_ELEM_SELECT)) {
if (use_vertex_group) {
const MDeformVert *dv = BM_ELEM_CD_GET_VOID_P(v, cd_dvert_offset);
weight = defvert_find_weight(dv, defbase_act);
if (invert_vertex_group) {
weight = 1.0f - weight;
}
}
else {
weight = 1.0f;
}
float *vweights = MEM_mallocN(sizeof(*vweights) * bm->totvert, __func__);
{
const int cd_dvert_offset = CustomData_get_offset(&bm->vdata, CD_MDEFORMVERT);
const int defbase_act = obedit->actdef - 1;
if (use_vertex_group && (cd_dvert_offset == -1)) {
BKE_report(op->reports, RPT_WARNING, "No active vertex group");
use_vertex_group = false;
}
vweights[i] = weight;
BM_elem_index_set(v, i); /* set_inline */
}
bm->elem_index_dirty &= ~BM_VERT;
}
float ratio_adjust;
if ((bm->totface == bm->totfacesel) || (ratio == 0.0f)) {
ratio_adjust = ratio;
}
else {
/**
* Calculate a new ratio based on faces that could be remoevd during decimation.
* needed so 0..1 has a meaningful range when operating on the selection.
*
* This doesn't have to be totally accurate,
* but needs to be greater than the number of selected faces
*/
int totface_basis = 0;
int totface_adjacent = 0;
BMIter iter;
BMFace *f;
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
/* count faces during decimation, ngons are triangulated */
const int f_len = f->len > 4 ? (f->len - 2) : 1;
totface_basis += f_len;
BMLoop *l_iter, *l_first;
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
if (vweights[BM_elem_index_get(l_iter->v)] != 0.0f) {
totface_adjacent += f_len;
break;
BMIter iter;
BMVert *v;
int i;
BM_ITER_MESH_INDEX (v, &iter, bm, BM_VERTS_OF_MESH, i) {
float weight = 0.0f;
if (BM_elem_flag_test(v, BM_ELEM_SELECT)) {
if (use_vertex_group) {
const MDeformVert *dv = BM_ELEM_CD_GET_VOID_P(v, cd_dvert_offset);
weight = defvert_find_weight(dv, defbase_act);
if (invert_vertex_group) {
weight = 1.0f - weight;
}
}
else {
weight = 1.0f;
}
}
} while ((l_iter = l_iter->next) != l_first);
vweights[i] = weight;
BM_elem_index_set(v, i); /* set_inline */
}
bm->elem_index_dirty &= ~BM_VERT;
}
ratio_adjust = ratio;
ratio_adjust = 1.0f - ratio_adjust;
ratio_adjust *= (float)totface_adjacent / (float)totface_basis;
ratio_adjust = 1.0f - ratio_adjust;
}
float ratio_adjust;
BM_mesh_decimate_collapse(
em->bm, ratio_adjust, vweights, vertex_group_factor, false,
symmetry_axis, symmetry_eps);
MEM_freeN(vweights);
{
short selectmode = em->selectmode;
if ((selectmode & (SCE_SELECT_VERTEX | SCE_SELECT_EDGE)) == 0) {
/* ensure we flush edges -> faces */
selectmode |= SCE_SELECT_EDGE;
if ((bm->totface == bm->totfacesel) || (ratio == 0.0f)) {
ratio_adjust = ratio;
}
EDBM_selectmode_flush_ex(em, selectmode);
}
else {
/**
* Calculate a new ratio based on faces that could be remoevd during decimation.
* needed so 0..1 has a meaningful range when operating on the selection.
*
* This doesn't have to be totally accurate,
* but needs to be greater than the number of selected faces
*/
EDBM_update_generic(em, true, true);
int totface_basis = 0;
int totface_adjacent = 0;
BMIter iter;
BMFace *f;
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
/* count faces during decimation, ngons are triangulated */
const int f_len = f->len > 4 ? (f->len - 2) : 1;
totface_basis += f_len;
BMLoop *l_iter, *l_first;
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
if (vweights[BM_elem_index_get(l_iter->v)] != 0.0f) {
totface_adjacent += f_len;
break;
}
} while ((l_iter = l_iter->next) != l_first);
}
ratio_adjust = ratio;
ratio_adjust = 1.0f - ratio_adjust;
ratio_adjust *= (float)totface_adjacent / (float)totface_basis;
ratio_adjust = 1.0f - ratio_adjust;
}
BM_mesh_decimate_collapse(
em->bm, ratio_adjust, vweights, vertex_group_factor, false,
symmetry_axis, symmetry_eps);
MEM_freeN(vweights);
{
short selectmode = em->selectmode;
if ((selectmode & (SCE_SELECT_VERTEX | SCE_SELECT_EDGE)) == 0) {
/* ensure we flush edges -> faces */
selectmode |= SCE_SELECT_EDGE;
}
EDBM_selectmode_flush_ex(em, selectmode);
}
EDBM_update_generic(em, true, true);
}
MEM_freeN(objects);
return OPERATOR_FINISHED;
}