int sculpt_get_first_deform_matrices(Scene *scene, Object *ob, float (**deformmats)[3][3], float (**deformcos)[3])
{
ModifierData *md;
DerivedMesh *dm;
int a, numVerts= 0;
float (*defmats)[3][3]= NULL, (*deformedVerts)[3]= NULL;
MultiresModifierData *mmd= get_multires_modifier(scene, ob, 0);
int has_multires = mmd != NULL && mmd->sculptlvl > 0;
int numleft= 0;
if(has_multires) {
*deformmats= NULL;
*deformcos= NULL;
return numleft;
}
dm= NULL;
md= modifiers_getVirtualModifierList(ob);
for(; md; md= md->next) {
ModifierTypeInfo *mti= modifierType_getInfo(md->type);
if(!modifier_isEnabled(scene, md, eModifierMode_Realtime)) continue;
if(mti->type==eModifierTypeType_OnlyDeform) {
if(!defmats) {
Mesh *me= (Mesh*)ob->data;
dm= mesh_create_derived(me, ob, NULL);
deformedVerts= mesh_getVertexCos(me, &numVerts);
defmats= MEM_callocN(sizeof(*defmats)*numVerts, "defmats");
for(a=0; a<numVerts; a++)
unit_m3(defmats[a]);
}
if(mti->deformMatrices) mti->deformMatrices(md, ob, dm, deformedVerts, defmats, numVerts);
else break;
}
}
for(; md; md= md->next) {
ModifierTypeInfo *mti= modifierType_getInfo(md->type);
if(!modifier_isEnabled(scene, md, eModifierMode_Realtime)) continue;
if(mti->type==eModifierTypeType_OnlyDeform)
numleft++;
}
if(dm)
dm->release(dm);
*deformmats= defmats;
*deformcos= deformedVerts;
return numleft;
}
int modifier_supportsMapping(ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
return (mti->type==eModifierTypeType_OnlyDeform ||
(mti->flags & eModifierTypeFlag_SupportsMapping));
}
static ModifierData *curve_get_tesselate_point(Scene *scene, Object *ob, int forRender, int editmode)
{
ModifierData *md = modifiers_getVirtualModifierList(ob);
ModifierData *preTesselatePoint;
int required_mode;
if(forRender) required_mode = eModifierMode_Render;
else required_mode = eModifierMode_Realtime;
if(editmode) required_mode |= eModifierMode_Editmode;
preTesselatePoint = NULL;
for (; md; md=md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if (!modifier_isEnabled(scene, md, required_mode)) continue;
if (mti->type == eModifierTypeType_Constructive) return preTesselatePoint;
if (ELEM3(md->type, eModifierType_Hook, eModifierType_Softbody, eModifierType_MeshDeform)) {
preTesselatePoint = md;
/* this modifiers are moving point of tesselation automatically
(some of them even can't be applied on tesselated curve), set flag
for incformation button in modifier's header */
md->mode |= eModifierMode_ApplyOnSpline;
} else if(md->mode&eModifierMode_ApplyOnSpline) {
preTesselatePoint = md;
}
}
return preTesselatePoint;
}
/* used for buttons, to find out if the 'draw deformed in editmode' option is
* there
*
* also used in transform_conversion.c, to detect CrazySpace [tm] (2nd arg
* then is NULL)
* also used for some mesh tools to give warnings
*/
int modifiers_getCageIndex(struct Scene *scene, Object *ob, int *lastPossibleCageIndex_r, int virtual_)
{
ModifierData *md = (virtual_)? modifiers_getVirtualModifierList(ob): ob->modifiers.first;
int i, cageIndex = -1;
if(lastPossibleCageIndex_r) {
/* ensure the value is initialized */
*lastPossibleCageIndex_r= -1;
}
/* Find the last modifier acting on the cage. */
for (i=0; md; i++,md=md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
md->scene= scene;
if (!(md->mode & eModifierMode_Realtime)) continue;
if (!(md->mode & eModifierMode_Editmode)) continue;
if (mti->isDisabled && mti->isDisabled(md, 0)) continue;
if (!(mti->flags & eModifierTypeFlag_SupportsEditmode)) continue;
if (md->mode & eModifierMode_DisableTemporary) continue;
if (!modifier_supportsMapping(md))
break;
if (lastPossibleCageIndex_r) *lastPossibleCageIndex_r = i;
if (md->mode & eModifierMode_OnCage)
cageIndex = i;
}
return cageIndex;
}
static EnumPropertyItem *modifier_add_itemf(bContext *C, PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), int *free)
{
Object *ob= ED_object_active_context(C);
EnumPropertyItem *item= NULL, *md_item;
ModifierTypeInfo *mti;
int totitem= 0, a;
if(!ob)
return modifier_type_items;
for(a=0; modifier_type_items[a].identifier; a++) {
md_item= &modifier_type_items[a];
if(md_item->identifier[0]) {
mti= modifierType_getInfo(md_item->value);
if(mti->flags & eModifierTypeFlag_NoUserAdd)
continue;
if(!((mti->flags & eModifierTypeFlag_AcceptsCVs) ||
(ob->type==OB_MESH && (mti->flags & eModifierTypeFlag_AcceptsMesh))))
continue;
}
RNA_enum_item_add(&item, &totitem, md_item);
}
RNA_enum_item_end(&item, &totitem);
*free= 1;
return item;
}
void modifier_unique_name(ListBase *modifiers, ModifierData *md)
{
if (modifiers && md) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
BLI_uniquename(modifiers, md, mti->name, '.', offsetof(ModifierData, name), sizeof(md->name));
}
}
void multiresModifier_join(Object *ob)
{
Base *base = NULL;
int highest_lvl = 0;
/* First find the highest level of subdivision */
base = FIRSTBASE;
while(base) {
if(TESTBASELIB_BGMODE(v3d, base) && base->object->type==OB_MESH) {
ModifierData *md;
for(md = base->object->modifiers.first; md; md = md->next) {
if(md->type == eModifierType_Multires) {
int totlvl = ((MultiresModifierData*)md)->totlvl;
if(totlvl > highest_lvl)
highest_lvl = totlvl;
/* Ensure that all updates are processed */
multires_force_update(base->object);
}
}
}
base = base->next;
}
/* No multires meshes selected */
if(highest_lvl == 0)
return;
/* Subdivide all the displacements to the highest level */
base = FIRSTBASE;
while(base) {
if(TESTBASELIB_BGMODE(v3d, base) && base->object->type==OB_MESH) {
ModifierData *md = NULL;
MultiresModifierData *mmd = NULL;
for(md = base->object->modifiers.first; md; md = md->next) {
if(md->type == eModifierType_Multires)
mmd = (MultiresModifierData*)md;
}
/* If the object didn't have multires enabled, give it a new modifier */
if(!mmd) {
md = base->object->modifiers.first;
while(md && modifierType_getInfo(md->type)->type == eModifierTypeType_OnlyDeform)
md = md->next;
mmd = (MultiresModifierData*)modifier_new(eModifierType_Multires);
BLI_insertlinkbefore(&base->object->modifiers, md, mmd);
modifier_unique_name(&base->object->modifiers, mmd);
}
if(mmd)
multiresModifier_subdivide(mmd, base->object, highest_lvl - mmd->totlvl, 0, 0);
}
base = base->next;
}
}
void crazyspace_build_sculpt(Scene *scene, Object *ob, float (**deformmats)[3][3], float (**deformcos)[3])
{
int totleft= sculpt_get_first_deform_matrices(scene, ob, deformmats, deformcos);
if(totleft) {
/* there are deformation modifier which doesn't support deformation matricies
calculation. Need additional crazyspace correction */
float (*deformedVerts)[3]= *deformcos;
float (*origVerts)[3]= MEM_dupallocN(deformedVerts);
float *quats= NULL;
int i, deformed= 0;
ModifierData *md= modifiers_getVirtualModifierList(ob);
Mesh *me= (Mesh*)ob->data;
for(; md; md= md->next) {
ModifierTypeInfo *mti= modifierType_getInfo(md->type);
if(!modifier_isEnabled(scene, md, eModifierMode_Realtime)) continue;
if(mti->type==eModifierTypeType_OnlyDeform) {
/* skip leading modifiers which have been already
handled in sculpt_get_first_deform_matrices */
if(mti->deformMatrices && !deformed)
continue;
mti->deformVerts(md, ob, NULL, deformedVerts, me->totvert, 0, 0);
deformed= 1;
}
}
quats= MEM_mallocN(me->totvert*sizeof(float)*4, "crazy quats");
crazyspace_set_quats_mesh(me, (float*)origVerts, (float*)deformedVerts, quats);
for(i=0; i<me->totvert; i++) {
float qmat[3][3], tmat[3][3];
quat_to_mat3(qmat, &quats[i*4]);
mul_m3_m3m3(tmat, qmat, (*deformmats)[i]);
copy_m3_m3((*deformmats)[i], tmat);
}
MEM_freeN(origVerts);
MEM_freeN(quats);
}
if(!*deformmats) {
int a, numVerts;
Mesh *me= (Mesh*)ob->data;
*deformcos= mesh_getVertexCos(me, &numVerts);
*deformmats= MEM_callocN(sizeof(*(*deformmats))*numVerts, "defmats");
for(a=0; a<numVerts; a++)
unit_m3((*deformmats)[a]);
}
}
void modifier_free(ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if (mti->freeData) mti->freeData(md);
if (md->error) MEM_freeN(md->error);
MEM_freeN(md);
}
bool modifier_unique_name(ListBase *modifiers, ModifierData *md)
{
if (modifiers && md) {
const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
return BLI_uniquename(modifiers, md, DATA_(mti->name), '.', offsetof(ModifierData, name), sizeof(md->name));
}
return false;
}
void modifier_copyData(ModifierData *md, ModifierData *target)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
target->mode = md->mode;
if (mti->copyData)
mti->copyData(md, target);
}
Mesh *BKE_mesh_create_derived_for_modifier(struct Depsgraph *depsgraph,
Scene *scene,
Object *ob_eval,
ModifierData *md_eval,
int build_shapekey_layers)
{
Mesh *me = ob_eval->runtime.mesh_orig ? ob_eval->runtime.mesh_orig : ob_eval->data;
const ModifierTypeInfo *mti = modifierType_getInfo(md_eval->type);
Mesh *result;
KeyBlock *kb;
ModifierEvalContext mectx = {depsgraph, ob_eval, 0};
if (!(md_eval->mode & eModifierMode_Realtime)) {
return NULL;
}
if (mti->isDisabled && mti->isDisabled(scene, md_eval, 0)) {
return NULL;
}
if (build_shapekey_layers && me->key &&
(kb = BLI_findlink(&me->key->block, ob_eval->shapenr - 1))) {
BKE_keyblock_convert_to_mesh(kb, me);
}
if (mti->type == eModifierTypeType_OnlyDeform) {
int numVerts;
float(*deformedVerts)[3] = BKE_mesh_vertexCos_get(me, &numVerts);
BKE_id_copy_ex(NULL, &me->id, (ID **)&result, LIB_ID_COPY_LOCALIZE);
mti->deformVerts(md_eval, &mectx, result, deformedVerts, numVerts);
BKE_mesh_apply_vert_coords(result, deformedVerts);
if (build_shapekey_layers) {
add_shapekey_layers(result, me);
}
MEM_freeN(deformedVerts);
}
else {
Mesh *mesh_temp;
BKE_id_copy_ex(NULL, &me->id, (ID **)&mesh_temp, LIB_ID_COPY_LOCALIZE);
if (build_shapekey_layers) {
add_shapekey_layers(mesh_temp, me);
}
result = mti->applyModifier(md_eval, &mectx, mesh_temp);
ASSERT_IS_VALID_MESH(result);
if (mesh_temp != result) {
BKE_id_free(NULL, mesh_temp);
}
}
return result;
}
/* callback's can use this
* to avoid copying every member.
*/
void modifier_copyData_generic(const ModifierData *md_src, ModifierData *md_dst)
{
ModifierTypeInfo *mti = modifierType_getInfo(md_src->type);
const size_t data_size = sizeof(ModifierData);
const char *md_src_data = ((char *)md_src) + data_size;
char *md_dst_data = ((char *)md_dst) + data_size;
BLI_assert(data_size <= (size_t)mti->structSize);
memcpy(md_dst_data, md_src_data, (size_t)mti->structSize - data_size);
}
bool modifier_supportsCage(struct Scene *scene, ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
md->scene = scene;
return ((!mti->isDisabled || !mti->isDisabled(md, 0)) &&
(mti->flags & eModifierTypeFlag_SupportsEditmode) &&
modifier_supportsMapping(md));
}
int ED_object_modifier_move_up(ReportList *reports, Object *ob, ModifierData *md)
{
if(md->prev) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if(mti->type!=eModifierTypeType_OnlyDeform) {
ModifierTypeInfo *nmti = modifierType_getInfo(md->prev->type);
if(nmti->flags&eModifierTypeFlag_RequiresOriginalData) {
BKE_report(reports, RPT_WARNING, "Cannot move above a modifier requiring original data");
return 0;
}
}
BLI_remlink(&ob->modifiers, md);
BLI_insertlink(&ob->modifiers, md->prev->prev, md);
}
return 1;
}
int modifier_couldBeCage(struct Scene *scene, ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
md->scene= scene;
return ( (md->mode & eModifierMode_Realtime) &&
(md->mode & eModifierMode_Editmode) &&
(!mti->isDisabled || !mti->isDisabled(md, 0)) &&
modifier_supportsMapping(md));
}
void modifiers_foreachTexLink(Object *ob, TexWalkFunc walk, void *userData)
{
ModifierData *md = ob->modifiers.first;
for (; md; md=md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if(mti->foreachTexLink)
mti->foreachTexLink(md, ob, walk, userData);
}
}
int ED_object_modifier_move_down(ReportList *reports, Object *ob, ModifierData *md)
{
if(md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if(mti->flags&eModifierTypeFlag_RequiresOriginalData) {
ModifierTypeInfo *nmti = modifierType_getInfo(md->next->type);
if(nmti->type!=eModifierTypeType_OnlyDeform) {
BKE_report(reports, RPT_WARNING, "Cannot move beyond a non-deforming modifier");
return 0;
}
}
BLI_remlink(&ob->modifiers, md);
BLI_insertlink(&ob->modifiers, md->next, md);
}
return 1;
}
int modifier_isPreview(ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if (!(mti->flags & eModifierTypeFlag_UsesPreview))
return FALSE;
if (md->mode & eModifierMode_Realtime)
return TRUE;
return FALSE;
}
bool modifier_isPreview(ModifierData *md)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if (!(mti->flags & eModifierTypeFlag_UsesPreview))
return false;
if (md->mode & eModifierMode_Realtime)
return true;
return false;
}
static void curve_calc_orcodm(Scene *scene, Object *ob, DerivedMesh *derivedFinal, int forRender)
{
/* this function represents logic of mesh's orcodm calculation */
/* for displist-based objects */
ModifierData *md = modifiers_getVirtualModifierList(ob);
ModifierData *preTesselatePoint;
Curve *cu= ob->data;
int required_mode;
int editmode = (!forRender && cu->editnurb);
DerivedMesh *ndm, *orcodm= NULL;
if(forRender) required_mode = eModifierMode_Render;
else required_mode = eModifierMode_Realtime;
preTesselatePoint = curve_get_tesselate_point(scene, ob, forRender, editmode);
if(editmode) required_mode |= eModifierMode_Editmode;
if (preTesselatePoint) {
md = preTesselatePoint->next;
}
for (; md; md=md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
md->scene= scene;
if ((md->mode & required_mode) != required_mode) continue;
if (mti->isDisabled && mti->isDisabled(md, forRender)) continue;
if (mti->type!=eModifierTypeType_Constructive) continue;
if(!orcodm)
orcodm= create_orco_dm(scene, ob);
ndm = mti->applyModifier(md, ob, orcodm, forRender, 0);
if(ndm) {
/* if the modifier returned a new dm, release the old one */
if(orcodm && orcodm != ndm) {
orcodm->release(orcodm);
}
orcodm = ndm;
}
}
/* add an orco layer if needed */
add_orco_dm(scene, ob, derivedFinal, orcodm);
if(orcodm)
orcodm->release(orcodm);
}
CDMaskLink *modifiers_calcDataMasks(struct Scene *scene, Object *ob, ModifierData *md,
CustomDataMask dataMask, int required_mode,
ModifierData *previewmd, CustomDataMask previewmask)
{
CDMaskLink *dataMasks = NULL;
CDMaskLink *curr, *prev;
/* build a list of modifier data requirements in reverse order */
for (; md; md = md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
curr = MEM_callocN(sizeof(CDMaskLink), "CDMaskLink");
if (modifier_isEnabled(scene, md, required_mode)) {
if (mti->requiredDataMask)
curr->mask = mti->requiredDataMask(ob, md);
if (previewmd == md) {
curr->mask |= previewmask;
}
}
/* prepend new datamask */
curr->next = dataMasks;
dataMasks = curr;
}
/* build the list of required data masks - each mask in the list must
* include all elements of the masks that follow it
*
* note the list is currently in reverse order, so "masks that follow it"
* actually means "masks that precede it" at the moment
*/
for (curr = dataMasks, prev = NULL; curr; prev = curr, curr = curr->next) {
if (prev) {
CustomDataMask prev_mask = prev->mask;
CustomDataMask curr_mask = curr->mask;
curr->mask = curr_mask | prev_mask;
}
else {
CustomDataMask curr_mask = curr->mask;
curr->mask = curr_mask | dataMask;
}
}
/* reverse the list so it's in the correct order */
BLI_linklist_reverse((LinkNode **)&dataMasks);
return dataMasks;
}
bool modifier_isEnabled(struct Scene *scene, ModifierData *md, int required_mode)
{
const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
md->scene = scene;
if ((md->mode & required_mode) != required_mode) return false;
if (mti->isDisabled && mti->isDisabled(md, required_mode == eModifierMode_Render)) return false;
if (md->mode & eModifierMode_DisableTemporary) return false;
if ((required_mode & eModifierMode_Editmode) && !(mti->flags & eModifierTypeFlag_SupportsEditmode)) return false;
return true;
}
void modwrap_deformVertsEM(
ModifierData *md, Object *ob,
struct BMEditMesh *em, DerivedMesh *dm,
float (*vertexCos)[3], int numVerts)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
BLI_assert(!dm || CustomData_has_layer(&dm->polyData, CD_NORMAL) == false);
if (dm && mti->dependsOnNormals && mti->dependsOnNormals(md)) {
DM_ensure_normals(dm);
}
mti->deformVertsEM(md, ob, em, dm, vertexCos, numVerts);
}
struct DerivedMesh *modwrap_applyModifier(
ModifierData *md, Object *ob,
struct DerivedMesh *dm,
ModifierApplyFlag flag)
{
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
BLI_assert(CustomData_has_layer(&dm->polyData, CD_NORMAL) == false);
if (mti->dependsOnNormals && mti->dependsOnNormals(md)) {
DM_ensure_normals(dm);
}
return mti->applyModifier(md, ob, dm, flag);
}
int editmesh_get_first_deform_matrices(Scene *scene, Object *ob, EditMesh *em, float (**deformmats)[3][3], float (**deformcos)[3])
{
ModifierData *md;
DerivedMesh *dm;
int i, a, numleft = 0, numVerts = 0;
int cageIndex = modifiers_getCageIndex(scene, ob, NULL, 1);
float (*defmats)[3][3] = NULL, (*deformedVerts)[3] = NULL;
modifiers_clearErrors(ob);
dm = NULL;
md = modifiers_getVirtualModifierList(ob);
/* compute the deformation matrices and coordinates for the first
modifiers with on cage editing that are enabled and support computing
deform matrices */
for(i = 0; md && i <= cageIndex; i++, md = md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if(!editmesh_modifier_is_enabled(scene, md, dm))
continue;
if(mti->type==eModifierTypeType_OnlyDeform && mti->deformMatricesEM) {
if(!defmats) {
dm= editmesh_get_derived(em, NULL);
deformedVerts= editmesh_get_vertex_cos(em, &numVerts);
defmats= MEM_callocN(sizeof(*defmats)*numVerts, "defmats");
for(a=0; a<numVerts; a++)
unit_m3(defmats[a]);
}
mti->deformMatricesEM(md, ob, em, dm, deformedVerts, defmats,
numVerts);
}
else
break;
}
for(; md && i <= cageIndex; md = md->next, i++)
if(editmesh_modifier_is_enabled(scene, md, dm) && modifier_isCorrectableDeformed(md))
numleft++;
if(dm)
dm->release(dm);
*deformmats= defmats;
*deformcos= deformedVerts;
return numleft;
}
void modwrap_deformVerts(
ModifierData *md, Object *ob,
DerivedMesh *dm,
float (*vertexCos)[3], int numVerts,
ModifierApplyFlag flag)
{
const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
BLI_assert(!dm || CustomData_has_layer(&dm->polyData, CD_NORMAL) == false);
if (dm && mti->dependsOnNormals && mti->dependsOnNormals(md)) {
DM_ensure_normals(dm);
}
mti->deformVerts(md, ob, dm, vertexCos, numVerts, flag);
}
static int modifier_apply_shape(ReportList *reports, Scene *scene, Object *ob, ModifierData *md)
{
ModifierTypeInfo *mti= modifierType_getInfo(md->type);
md->scene= scene;
if (mti->isDisabled && mti->isDisabled(md, 0)) {
BKE_report(reports, RPT_ERROR, "Modifier is disabled, skipping apply");
return 0;
}
if (ob->type==OB_MESH) {
DerivedMesh *dm;
Mesh *me= ob->data;
Key *key=me->key;
KeyBlock *kb;
if(!modifier_sameTopology(md)) {
BKE_report(reports, RPT_ERROR, "Only deforming modifiers can be applied to Shapes");
return 0;
}
mesh_pmv_off(me);
dm = mesh_create_derived_for_modifier(scene, ob, md);
if (!dm) {
BKE_report(reports, RPT_ERROR, "Modifier is disabled or returned error, skipping apply");
return 0;
}
if(key == NULL) {
key= me->key= add_key((ID *)me);
key->type= KEY_RELATIVE;
/* if that was the first key block added, then it was the basis.
* Initialise it with the mesh, and add another for the modifier */
kb= add_keyblock(key, NULL);
mesh_to_key(me, kb);
}
kb= add_keyblock(key, md->name);
DM_to_meshkey(dm, me, kb);
dm->release(dm);
}
else {
BKE_report(reports, RPT_ERROR, "Cannot apply modifier for this object type");
return 0;
}
return 1;
}
void modifiers_foreachIDLink(Object *ob, IDWalkFunc walk, void *userData)
{
ModifierData *md = ob->modifiers.first;
for (; md; md=md->next) {
ModifierTypeInfo *mti = modifierType_getInfo(md->type);
if(mti->foreachIDLink) mti->foreachIDLink(md, ob, walk, userData);
else if(mti->foreachObjectLink) {
/* each Object can masquerade as an ID, so this should be OK */
ObjectWalkFunc fp = (ObjectWalkFunc)walk;
mti->foreachObjectLink(md, ob, fp, userData);
}
}
}
bool modifier_isPreview(ModifierData *md)
{
const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
/* Constructive modifiers are highly likely to also modify data like vgroups or vcol! */
if (!((mti->flags & eModifierTypeFlag_UsesPreview) || (mti->type == eModifierTypeType_Constructive))) {
return false;
}
if (md->mode & eModifierMode_Realtime) {
return true;
}
return false;
}
