diff options
Diffstat (limited to 'source/blender/blenkernel/intern/mesh_convert.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/mesh_convert.cc | 267 |
1 files changed, 83 insertions, 184 deletions
diff --git a/source/blender/blenkernel/intern/mesh_convert.cc b/source/blender/blenkernel/intern/mesh_convert.cc index 467f7d4543e..59cdb6a2b27 100644 --- a/source/blender/blenkernel/intern/mesh_convert.cc +++ b/source/blender/blenkernel/intern/mesh_convert.cc @@ -41,6 +41,7 @@ #include "BKE_deform.h" #include "BKE_displist.h" #include "BKE_editmesh.h" +#include "BKE_geometry_set.hh" #include "BKE_key.h" #include "BKE_lib_id.h" #include "BKE_lib_query.h" @@ -51,6 +52,7 @@ #include "BKE_mesh_runtime.h" #include "BKE_mesh_wrapper.h" #include "BKE_modifier.h" +#include "BKE_spline.hh" /* these 2 are only used by conversion functions */ #include "BKE_curve.h" /* -- */ @@ -58,6 +60,8 @@ /* -- */ #include "BKE_pointcloud.h" +#include "BKE_curve_to_mesh.hh" + #include "DEG_depsgraph.h" #include "DEG_depsgraph_query.h" @@ -237,7 +241,7 @@ static int mesh_nurbs_displist_to_mdata(const Curve *cu, int a, b, ofs, vertcount, startvert, totvert = 0, totedge = 0, totloop = 0, totpoly = 0; int p1, p2, p3, p4, *index; const bool conv_polys = ( - /* 2d polys are filled with DL_INDEX3 displists */ + /* 2D polys are filled with #DispList.type == #DL_INDEX3. */ (CU_DO_2DFILL(cu) == false) || /* surf polys are never filled */ BKE_curve_type_get(cu) == OB_SURF); @@ -573,90 +577,6 @@ Mesh *BKE_mesh_new_nomain_from_curve(const Object *ob) return BKE_mesh_new_nomain_from_curve_displist(ob, &disp); } -static void mesh_from_nurbs_displist(Object *ob, ListBase *dispbase, const char *obdata_name) -{ - if (ob->runtime.data_eval && GS(((ID *)ob->runtime.data_eval)->name) != ID_ME) { - return; - } - - Mesh *me_eval = (Mesh *)ob->runtime.data_eval; - Mesh *me; - MVert *allvert = nullptr; - MEdge *alledge = nullptr; - MLoop *allloop = nullptr; - MLoopUV *alluv = nullptr; - MPoly *allpoly = nullptr; - int totvert, totedge, totloop, totpoly; - - Curve *cu = (Curve *)ob->data; - - if (me_eval == nullptr) { - if (mesh_nurbs_displist_to_mdata(cu, - dispbase, - &allvert, - &totvert, - &alledge, - &totedge, - &allloop, - &allpoly, - &alluv, - &totloop, - &totpoly) != 0) { - /* Error initializing */ - return; - } - - /* make mesh */ - me = (Mesh *)BKE_id_new_nomain(ID_ME, obdata_name); - - me->totvert = totvert; - me->totedge = totedge; - me->totloop = totloop; - me->totpoly = totpoly; - - me->mvert = (MVert *)CustomData_add_layer( - &me->vdata, CD_MVERT, CD_ASSIGN, allvert, me->totvert); - me->medge = (MEdge *)CustomData_add_layer( - &me->edata, CD_MEDGE, CD_ASSIGN, alledge, me->totedge); - me->mloop = (MLoop *)CustomData_add_layer( - &me->ldata, CD_MLOOP, CD_ASSIGN, allloop, me->totloop); - me->mpoly = (MPoly *)CustomData_add_layer( - &me->pdata, CD_MPOLY, CD_ASSIGN, allpoly, me->totpoly); - - if (alluv) { - const char *uvname = "UVMap"; - me->mloopuv = (MLoopUV *)CustomData_add_layer_named( - &me->ldata, CD_MLOOPUV, CD_ASSIGN, alluv, me->totloop, uvname); - } - - BKE_mesh_calc_normals(me); - } - else { - me = (Mesh *)BKE_id_new_nomain(ID_ME, obdata_name); - - ob->runtime.data_eval = nullptr; - BKE_mesh_nomain_to_mesh(me_eval, me, ob, &CD_MASK_MESH, true); - } - - me->totcol = cu->totcol; - me->mat = cu->mat; - - mesh_copy_texture_space_from_curve_type(cu, me); - - cu->mat = nullptr; - cu->totcol = 0; - - /* Do not decrement ob->data usercount here, - * it's done at end of func with BKE_id_free_us() call. */ - ob->data = me; - ob->type = OB_MESH; - - /* For temporary objects in BKE_mesh_new_from_object don't remap - * the entire scene with associated depsgraph updates, which are - * problematic for renderers exporting data. */ - BKE_id_free(nullptr, cu); -} - struct EdgeLink { struct EdgeLink *next, *prev; void *edge; @@ -948,54 +868,32 @@ void BKE_pointcloud_to_mesh(Main *bmain, Depsgraph *depsgraph, Scene *UNUSED(sce BKE_object_free_derived_caches(ob); } -/* Create a temporary object to be used for nurbs-to-mesh conversion. - * - * This is more complex that it should be because #mesh_from_nurbs_displist will do more than - * simply conversion and will attempt to take over ownership of evaluated result and will also - * modify the input object. */ -static Object *object_for_curve_to_mesh_create(Object *object) +/* Create a temporary object to be used for nurbs-to-mesh conversion. */ +static Object *object_for_curve_to_mesh_create(const Object *object) { - Curve *curve = (Curve *)object->data; + const Curve *curve = (const Curve *)object->data; - /* Create object itself. */ + /* Create a temporary object which can be evaluated and modified by generic + * curve evaluation (hence the #LIB_ID_COPY_SET_COPIED_ON_WRITE flag). */ Object *temp_object = (Object *)BKE_id_copy_ex( - nullptr, &object->id, nullptr, LIB_ID_COPY_LOCALIZE); + nullptr, &object->id, nullptr, LIB_ID_COPY_LOCALIZE | LIB_ID_COPY_SET_COPIED_ON_WRITE); /* Remove all modifiers, since we don't want them to be applied. */ BKE_object_free_modifiers(temp_object, LIB_ID_CREATE_NO_USER_REFCOUNT); - /* Copy relevant evaluated fields of curve cache. - * - * Note that there are extra fields in there like bevel and path, but those are not needed during - * conversion, so they are not copied to save unnecessary allocations. */ - if (temp_object->runtime.curve_cache == nullptr) { - temp_object->runtime.curve_cache = (CurveCache *)MEM_callocN(sizeof(CurveCache), - "CurveCache for curve types"); - } - - if (object->runtime.curve_cache != nullptr) { - BKE_displist_copy(&temp_object->runtime.curve_cache->disp, &object->runtime.curve_cache->disp); - } - - /* Constructive modifiers will use mesh to store result. */ - if (object->runtime.data_eval != nullptr) { - BKE_id_copy_ex( - nullptr, object->runtime.data_eval, &temp_object->runtime.data_eval, LIB_ID_COPY_LOCALIZE); - } - - /* Need to create copy of curve itself as well, it will be freed by underlying conversion - * functions. - * - * NOTE: Copies the data, but not the shapekeys. */ - BKE_id_copy_ex( - nullptr, (const ID *)object->data, (ID **)&temp_object->data, LIB_ID_COPY_LOCALIZE); + /* Need to create copy of curve itself as well, since it will be changed by the curve evaluation + * process. NOTE: Copies the data, but not the shape-keys. */ + temp_object->data = BKE_id_copy_ex(nullptr, + (const ID *)object->data, + nullptr, + LIB_ID_COPY_LOCALIZE | LIB_ID_COPY_SET_COPIED_ON_WRITE); Curve *temp_curve = (Curve *)temp_object->data; /* Make sure texture space is calculated for a copy of curve, it will be used for the final * result. */ BKE_curve_texspace_calc(temp_curve); - /* Temporarily set edit so we get updates from edit mode, but also because for text datablocks + /* Temporarily set edit so we get updates from edit mode, but also because for text data-blocks * copying it while in edit mode gives invalid data structures. */ temp_curve->editfont = curve->editfont; temp_curve->editnurb = curve->editnurb; @@ -1006,23 +904,10 @@ static Object *object_for_curve_to_mesh_create(Object *object) /** * Populate `object->runtime.curve_cache` which is then used to create the mesh. */ -static void curve_to_mesh_eval_ensure(Object *object) +static void curve_to_mesh_eval_ensure(Object &object) { - Curve *curve = (Curve *)object->data; - Curve remapped_curve = *curve; - Object remapped_object = *object; - BKE_object_runtime_reset(&remapped_object); - - remapped_object.data = &remapped_curve; - - if (object->runtime.curve_cache == nullptr) { - object->runtime.curve_cache = (CurveCache *)MEM_callocN(sizeof(CurveCache), - "CurveCache for Curve"); - } - - /* Temporarily share the curve-cache with the temporary object, owned by `object`. */ - remapped_object.runtime.curve_cache = object->runtime.curve_cache; - + BLI_assert(GS(static_cast<ID *>(object.data)->name) == ID_CU); + Curve &curve = *static_cast<Curve *>(object.data); /* Clear all modifiers for the bevel object. * * This is because they can not be reliably evaluated for an original object (at least because @@ -1031,83 +916,97 @@ static void curve_to_mesh_eval_ensure(Object *object) * So we create temporary copy of the object which will use same data as the original bevel, but * will have no modifiers. */ Object bevel_object = {{nullptr}}; - if (remapped_curve.bevobj != nullptr) { - bevel_object = *remapped_curve.bevobj; + if (curve.bevobj != nullptr) { + bevel_object = *curve.bevobj; BLI_listbase_clear(&bevel_object.modifiers); BKE_object_runtime_reset(&bevel_object); - remapped_curve.bevobj = &bevel_object; + curve.bevobj = &bevel_object; } /* Same thing for taper. */ Object taper_object = {{nullptr}}; - if (remapped_curve.taperobj != nullptr) { - taper_object = *remapped_curve.taperobj; + if (curve.taperobj != nullptr) { + taper_object = *curve.taperobj; BLI_listbase_clear(&taper_object.modifiers); BKE_object_runtime_reset(&taper_object); - remapped_curve.taperobj = &taper_object; + curve.taperobj = &taper_object; } /* NOTE: We don't have dependency graph or scene here, so we pass nullptr. This is all fine since * they are only used for modifier stack, which we have explicitly disabled for all objects. * * TODO(sergey): This is a very fragile logic, but proper solution requires re-writing quite a - * bit of internal functions (#mesh_from_nurbs_displist, BKE_mesh_nomain_to_mesh) and also - * Mesh From Curve operator. + * bit of internal functions (#BKE_mesh_nomain_to_mesh) and also Mesh From Curve operator. * Brecht says hold off with that. */ - Mesh *mesh_eval = nullptr; - BKE_displist_make_curveTypes_forRender( - nullptr, nullptr, &remapped_object, &remapped_object.runtime.curve_cache->disp, &mesh_eval); + BKE_displist_make_curveTypes(nullptr, nullptr, &object, true); - /* NOTE: this is to be consistent with `BKE_displist_make_curveTypes()`, however that is not a - * real issue currently, code here is broken in more than one way, fix(es) will be done - * separately. */ - if (mesh_eval != nullptr) { - BKE_object_eval_assign_data(&remapped_object, &mesh_eval->id, true); - } - - /* Owned by `object` & needed by the caller to create the mesh. */ - remapped_object.runtime.curve_cache = nullptr; - - BKE_object_runtime_free_data(&remapped_object); - BKE_object_runtime_free_data(&taper_object); + BKE_object_runtime_free_data(&bevel_object); BKE_object_runtime_free_data(&taper_object); } -static Mesh *mesh_new_from_curve_type_object(Object *object) +/* Necessary because #BKE_object_get_evaluated_mesh doesn't look in the geometry set yet. */ +static const Mesh *get_evaluated_mesh_from_object(const Object *object) { - Curve *curve = (Curve *)object->data; - Object *temp_object = object_for_curve_to_mesh_create(object); - Curve *temp_curve = (Curve *)temp_object->data; + const Mesh *mesh = BKE_object_get_evaluated_mesh(object); + if (mesh) { + return mesh; + } + GeometrySet *geometry_set_eval = object->runtime.geometry_set_eval; + if (geometry_set_eval) { + return geometry_set_eval->get_mesh_for_read(); + } + return nullptr; +} - /* When input object is an original one, we don't have evaluated curve cache yet, so need to - * create it in the temporary object. */ - if (!DEG_is_evaluated_object(object)) { - curve_to_mesh_eval_ensure(temp_object); +static const CurveEval *get_evaluated_curve_from_object(const Object *object) +{ + GeometrySet *geometry_set_eval = object->runtime.geometry_set_eval; + if (geometry_set_eval) { + return geometry_set_eval->get_curve_for_read(); } + return nullptr; +} - /* Reset pointers before conversion. */ - temp_curve->editfont = nullptr; - temp_curve->editnurb = nullptr; +static Mesh *mesh_new_from_evaluated_curve_type_object(const Object *evaluated_object) +{ + const Mesh *mesh = get_evaluated_mesh_from_object(evaluated_object); + if (mesh) { + return BKE_mesh_copy_for_eval(mesh, false); + } + const CurveEval *curve = get_evaluated_curve_from_object(evaluated_object); + if (curve) { + return blender::bke::curve_to_wire_mesh(*curve); + } + return nullptr; +} - /* Convert to mesh. */ - mesh_from_nurbs_displist( - temp_object, &temp_object->runtime.curve_cache->disp, curve->id.name + 2); +static Mesh *mesh_new_from_curve_type_object(const Object *object) +{ + /* If the object is evaluated, it should either have an evaluated mesh or curve data already. + * The mesh can be duplicated, or the curve converted to wire mesh edges. */ + if (DEG_is_evaluated_object(object)) { + return mesh_new_from_evaluated_curve_type_object(object); + } - /* #mesh_from_nurbs_displist changes the type to a mesh, check it worked. If it didn't - * the curve did not have any segments or otherwise would have generated an empty mesh. */ - if (temp_object->type != OB_MESH) { - BKE_id_free(nullptr, temp_object->data); - BKE_id_free(nullptr, temp_object); - return nullptr; + /* Otherwise, create a temporary "fake" evaluated object and try again. This might have + * different results, since in order to avoid having adverse affects to other original objects, + * modifiers are cleared. An alternative would be to create a temporary depsgraph only for this + * object and its dependencies. */ + Object *temp_object = object_for_curve_to_mesh_create(object); + ID *temp_data = static_cast<ID *>(temp_object->data); + curve_to_mesh_eval_ensure(*temp_object); + + /* If evaluating the curve replaced object data with different data, free the original data. */ + if (temp_data != temp_object->data) { + BKE_id_free(nullptr, temp_data); } - Mesh *mesh_result = (Mesh *)temp_object->data; + Mesh *mesh = mesh_new_from_evaluated_curve_type_object(temp_object); + BKE_id_free(nullptr, temp_object->data); BKE_id_free(nullptr, temp_object); - /* NOTE: Materials are copied in #mesh_from_nurbs_displist(). */ - - return mesh_result; + return mesh; } static Mesh *mesh_new_from_mball_object(Object *object) @@ -1290,7 +1189,7 @@ Mesh *BKE_mesh_new_from_object_to_bmain(Main *bmain, return mesh_in_bmain; } - /* Make sure mesh only points original datablocks, also increase users of materials and other + /* Make sure mesh only points original data-blocks, also increase users of materials and other * possibly referenced data-blocks. * * Going to original data-blocks is required to have bmain in a consistent state, where |