diff options
Diffstat (limited to 'source/blender/blenkernel/intern/curves.cc')
| -rw-r--r-- | source/blender/blenkernel/intern/curves.cc | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/curves.cc b/source/blender/blenkernel/intern/curves.cc new file mode 100644 index 00000000000..f5672e9b288 --- /dev/null +++ b/source/blender/blenkernel/intern/curves.cc @@ -0,0 +1,473 @@ +/* + * 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. + */ + +/** \file + * \ingroup bke + */ + +#include <cmath> +#include <cstring> + +#include "MEM_guardedalloc.h" + +#include "DNA_curves_types.h" +#include "DNA_defaults.h" +#include "DNA_material_types.h" +#include "DNA_object_types.h" + +#include "BLI_index_range.hh" +#include "BLI_listbase.h" +#include "BLI_math_base.h" +#include "BLI_math_vec_types.hh" +#include "BLI_rand.hh" +#include "BLI_string.h" +#include "BLI_utildefines.h" + +#include "BKE_anim_data.h" +#include "BKE_curves.h" +#include "BKE_customdata.h" +#include "BKE_global.h" +#include "BKE_idtype.h" +#include "BKE_lib_id.h" +#include "BKE_lib_query.h" +#include "BKE_lib_remap.h" +#include "BKE_main.h" +#include "BKE_modifier.h" +#include "BKE_object.h" + +#include "BLT_translation.h" + +#include "DEG_depsgraph_query.h" + +#include "BLO_read_write.h" + +using blender::float3; +using blender::IndexRange; +using blender::MutableSpan; +using blender::RandomNumberGenerator; + +static const char *ATTR_POSITION = "position"; +static const char *ATTR_RADIUS = "radius"; + +static void curves_random(Curves *curves); + +static void curves_init_data(ID *id) +{ + Curves *curves = (Curves *)id; + BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(curves, id)); + + MEMCPY_STRUCT_AFTER(curves, DNA_struct_default_get(Curves), id); + + CustomData_reset(&curves->geometry.point_data); + CustomData_reset(&curves->geometry.curve_data); + + CustomData_add_layer_named(&curves->geometry.point_data, + CD_PROP_FLOAT3, + CD_CALLOC, + nullptr, + curves->geometry.point_size, + ATTR_POSITION); + CustomData_add_layer_named(&curves->geometry.point_data, + CD_PROP_FLOAT, + CD_CALLOC, + nullptr, + curves->geometry.point_size, + ATTR_RADIUS); + + BKE_curves_update_customdata_pointers(curves); + + curves_random(curves); +} + +static void curves_copy_data(Main *UNUSED(bmain), ID *id_dst, const ID *id_src, const int flag) +{ + Curves *curves_dst = (Curves *)id_dst; + const Curves *curves_src = (const Curves *)id_src; + curves_dst->mat = static_cast<Material **>(MEM_dupallocN(curves_src->mat)); + + curves_dst->geometry.point_size = curves_src->geometry.point_size; + curves_dst->geometry.curve_size = curves_src->geometry.curve_size; + + const eCDAllocType alloc_type = (flag & LIB_ID_COPY_CD_REFERENCE) ? CD_REFERENCE : CD_DUPLICATE; + CustomData_copy(&curves_src->geometry.point_data, + &curves_dst->geometry.point_data, + CD_MASK_ALL, + alloc_type, + curves_dst->geometry.point_size); + CustomData_copy(&curves_src->geometry.curve_data, + &curves_dst->geometry.curve_data, + CD_MASK_ALL, + alloc_type, + curves_dst->geometry.curve_size); + BKE_curves_update_customdata_pointers(curves_dst); + + curves_dst->geometry.offsets = static_cast<int *>(MEM_dupallocN(curves_src->geometry.offsets)); + + curves_dst->batch_cache = nullptr; +} + +static void curves_free_data(ID *id) +{ + Curves *curves = (Curves *)id; + BKE_animdata_free(&curves->id, false); + + BKE_curves_batch_cache_free(curves); + + CustomData_free(&curves->geometry.point_data, curves->geometry.point_size); + CustomData_free(&curves->geometry.curve_data, curves->geometry.curve_size); + + MEM_SAFE_FREE(curves->geometry.offsets); + + MEM_SAFE_FREE(curves->mat); +} + +static void curves_foreach_id(ID *id, LibraryForeachIDData *data) +{ + Curves *curves = (Curves *)id; + for (int i = 0; i < curves->totcol; i++) { + BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, curves->mat[i], IDWALK_CB_USER); + } +} + +static void curves_blend_write(BlendWriter *writer, ID *id, const void *id_address) +{ + Curves *curves = (Curves *)id; + + CustomDataLayer *players = nullptr, players_buff[CD_TEMP_CHUNK_SIZE]; + CustomDataLayer *clayers = nullptr, clayers_buff[CD_TEMP_CHUNK_SIZE]; + CustomData_blend_write_prepare( + &curves->geometry.point_data, &players, players_buff, ARRAY_SIZE(players_buff)); + CustomData_blend_write_prepare( + &curves->geometry.curve_data, &clayers, clayers_buff, ARRAY_SIZE(clayers_buff)); + + /* Write LibData */ + BLO_write_id_struct(writer, Curves, id_address, &curves->id); + BKE_id_blend_write(writer, &curves->id); + + /* Direct data */ + CustomData_blend_write(writer, + &curves->geometry.point_data, + players, + curves->geometry.point_size, + CD_MASK_ALL, + &curves->id); + CustomData_blend_write(writer, + &curves->geometry.curve_data, + clayers, + curves->geometry.curve_size, + CD_MASK_ALL, + &curves->id); + + BLO_write_int32_array(writer, curves->geometry.curve_size + 1, curves->geometry.offsets); + + BLO_write_pointer_array(writer, curves->totcol, curves->mat); + if (curves->adt) { + BKE_animdata_blend_write(writer, curves->adt); + } + + /* Remove temporary data. */ + if (players && players != players_buff) { + MEM_freeN(players); + } + if (clayers && clayers != clayers_buff) { + MEM_freeN(clayers); + } +} + +static void curves_blend_read_data(BlendDataReader *reader, ID *id) +{ + Curves *curves = (Curves *)id; + BLO_read_data_address(reader, &curves->adt); + BKE_animdata_blend_read_data(reader, curves->adt); + + /* Geometry */ + CustomData_blend_read(reader, &curves->geometry.point_data, curves->geometry.point_size); + CustomData_blend_read(reader, &curves->geometry.curve_data, curves->geometry.point_size); + BKE_curves_update_customdata_pointers(curves); + + BLO_read_int32_array(reader, curves->geometry.curve_size + 1, &curves->geometry.offsets); + + /* Materials */ + BLO_read_pointer_array(reader, (void **)&curves->mat); +} + +static void curves_blend_read_lib(BlendLibReader *reader, ID *id) +{ + Curves *curves = (Curves *)id; + for (int a = 0; a < curves->totcol; a++) { + BLO_read_id_address(reader, curves->id.lib, &curves->mat[a]); + } +} + +static void curves_blend_read_expand(BlendExpander *expander, ID *id) +{ + Curves *curves = (Curves *)id; + for (int a = 0; a < curves->totcol; a++) { + BLO_expand(expander, curves->mat[a]); + } +} + +IDTypeInfo IDType_ID_CV = { + /*id_code */ ID_CV, + /*id_filter */ FILTER_ID_CV, + /*main_listbase_index */ INDEX_ID_CV, + /*struct_size */ sizeof(Curves), + /*name */ "Hair Curves", + /*name_plural */ "Hair Curves", + /*translation_context */ BLT_I18NCONTEXT_ID_CURVES, + /*flags */ IDTYPE_FLAGS_APPEND_IS_REUSABLE, + /*asset_type_info */ nullptr, + + /*init_data */ curves_init_data, + /*copy_data */ curves_copy_data, + /*free_data */ curves_free_data, + /*make_local */ nullptr, + /*foreach_id */ curves_foreach_id, + /*foreach_cache */ nullptr, + /*foreach_path */ nullptr, + /*owner_get */ nullptr, + + /*blend_write */ curves_blend_write, + /*blend_read_data */ curves_blend_read_data, + /*blend_read_lib */ curves_blend_read_lib, + /*blend_read_expand */ curves_blend_read_expand, + + /*blend_read_undo_preserve */ nullptr, + + /*lib_override_apply_post */ nullptr, +}; + +static void curves_random(Curves *curves) +{ + CurvesGeometry &geometry = curves->geometry; + const int numpoints = 8; + + geometry.curve_size = 500; + + geometry.curve_size = 500; + geometry.point_size = geometry.curve_size * numpoints; + + curves->geometry.offsets = (int *)MEM_calloc_arrayN( + curves->geometry.curve_size + 1, sizeof(int), __func__); + CustomData_realloc(&geometry.point_data, geometry.point_size); + CustomData_realloc(&geometry.curve_data, geometry.curve_size); + BKE_curves_update_customdata_pointers(curves); + + MutableSpan<int> offsets{geometry.offsets, geometry.curve_size + 1}; + MutableSpan<float3> positions{(float3 *)geometry.position, geometry.point_size}; + MutableSpan<float> radii{geometry.radius, geometry.point_size}; + + for (const int i : offsets.index_range()) { + geometry.offsets[i] = numpoints * i; + } + + RandomNumberGenerator rng; + + for (int i = 0; i < geometry.curve_size; i++) { + const IndexRange curve_range(offsets[i], offsets[i + 1] - offsets[i]); + MutableSpan<float3> curve_positions = positions.slice(curve_range); + MutableSpan<float> curve_radii = radii.slice(curve_range); + + const float theta = 2.0f * M_PI * rng.get_float(); + const float phi = saacosf(2.0f * rng.get_float() - 1.0f); + + float3 no = {std::sin(theta) * std::sin(phi), std::cos(theta) * std::sin(phi), std::cos(phi)}; + no = blender::math::normalize(no); + + float3 co = no; + for (int key = 0; key < numpoints; key++) { + float t = key / (float)(numpoints - 1); + curve_positions[key] = co; + curve_radii[key] = 0.02f * (1.0f - t); + + float3 offset = float3(rng.get_float(), rng.get_float(), rng.get_float()) * 2.0f - 1.0f; + co += (offset + no) / numpoints; + } + } +} + +void *BKE_curves_add(Main *bmain, const char *name) +{ + Curves *curves = static_cast<Curves *>(BKE_id_new(bmain, ID_CV, name)); + + return curves; +} + +BoundBox *BKE_curves_boundbox_get(Object *ob) +{ + BLI_assert(ob->type == OB_CURVES); + Curves *curves = static_cast<Curves *>(ob->data); + + if (ob->runtime.bb != nullptr && (ob->runtime.bb->flag & BOUNDBOX_DIRTY) == 0) { + return ob->runtime.bb; + } + + if (ob->runtime.bb == nullptr) { + ob->runtime.bb = MEM_cnew<BoundBox>(__func__); + + float min[3], max[3]; + INIT_MINMAX(min, max); + + float(*curves_co)[3] = curves->geometry.position; + float *curves_radius = curves->geometry.radius; + for (int a = 0; a < curves->geometry.point_size; a++) { + float *co = curves_co[a]; + float radius = (curves_radius) ? curves_radius[a] : 0.0f; + const float co_min[3] = {co[0] - radius, co[1] - radius, co[2] - radius}; + const float co_max[3] = {co[0] + radius, co[1] + radius, co[2] + radius}; + DO_MIN(co_min, min); + DO_MAX(co_max, max); + } + + BKE_boundbox_init_from_minmax(ob->runtime.bb, min, max); + } + + return ob->runtime.bb; +} + +void BKE_curves_update_customdata_pointers(Curves *curves) +{ + curves->geometry.position = (float(*)[3])CustomData_get_layer_named( + &curves->geometry.point_data, CD_PROP_FLOAT3, ATTR_POSITION); + curves->geometry.radius = (float *)CustomData_get_layer_named( + &curves->geometry.point_data, CD_PROP_FLOAT, ATTR_RADIUS); +} + +bool BKE_curves_customdata_required(Curves *UNUSED(curves), CustomDataLayer *layer) +{ + return layer->type == CD_PROP_FLOAT3 && STREQ(layer->name, ATTR_POSITION); +} + +/* Dependency Graph */ + +Curves *BKE_curves_new_for_eval(const Curves *curves_src, int totpoint, int totcurve) +{ + Curves *curves_dst = static_cast<Curves *>(BKE_id_new_nomain(ID_CV, nullptr)); + + STRNCPY(curves_dst->id.name, curves_src->id.name); + curves_dst->mat = static_cast<Material **>(MEM_dupallocN(curves_src->mat)); + curves_dst->totcol = curves_src->totcol; + + curves_dst->geometry.point_size = totpoint; + curves_dst->geometry.curve_size = totcurve; + CustomData_copy(&curves_src->geometry.point_data, + &curves_dst->geometry.point_data, + CD_MASK_ALL, + CD_CALLOC, + totpoint); + CustomData_copy(&curves_src->geometry.curve_data, + &curves_dst->geometry.curve_data, + CD_MASK_ALL, + CD_CALLOC, + totcurve); + BKE_curves_update_customdata_pointers(curves_dst); + + return curves_dst; +} + +Curves *BKE_curves_copy_for_eval(Curves *curves_src, bool reference) +{ + int flags = LIB_ID_COPY_LOCALIZE; + + if (reference) { + flags |= LIB_ID_COPY_CD_REFERENCE; + } + + Curves *result = (Curves *)BKE_id_copy_ex(nullptr, &curves_src->id, nullptr, flags); + return result; +} + +static Curves *curves_evaluate_modifiers(struct Depsgraph *depsgraph, + struct Scene *scene, + Object *object, + Curves *curves_input) +{ + Curves *curves = curves_input; + + /* Modifier evaluation modes. */ + const bool use_render = (DEG_get_mode(depsgraph) == DAG_EVAL_RENDER); + const int required_mode = use_render ? eModifierMode_Render : eModifierMode_Realtime; + ModifierApplyFlag apply_flag = use_render ? MOD_APPLY_RENDER : MOD_APPLY_USECACHE; + const ModifierEvalContext mectx = {depsgraph, object, apply_flag}; + + /* Get effective list of modifiers to execute. Some effects like shape keys + * are added as virtual modifiers before the user created modifiers. */ + VirtualModifierData virtualModifierData; + ModifierData *md = BKE_modifiers_get_virtual_modifierlist(object, &virtualModifierData); + + /* Evaluate modifiers. */ + for (; md; md = md->next) { + const ModifierTypeInfo *mti = BKE_modifier_get_info(static_cast<ModifierType>(md->type)); + + if (!BKE_modifier_is_enabled(scene, md, required_mode)) { + continue; + } + + if ((mti->type == eModifierTypeType_OnlyDeform) && + (mti->flags & eModifierTypeFlag_AcceptsVertexCosOnly)) { + /* Ensure we are not modifying the input. */ + if (curves == curves_input) { + curves = BKE_curves_copy_for_eval(curves, true); + } + + /* Ensure we are not overwriting referenced data. */ + CustomData_duplicate_referenced_layer_named(&curves->geometry.point_data, + CD_PROP_FLOAT3, + ATTR_POSITION, + curves->geometry.point_size); + BKE_curves_update_customdata_pointers(curves); + + /* Created deformed coordinates array on demand. */ + mti->deformVerts( + md, &mectx, nullptr, curves->geometry.position, curves->geometry.point_size); + } + } + + return curves; +} + +void BKE_curves_data_update(struct Depsgraph *depsgraph, struct Scene *scene, Object *object) +{ + /* Free any evaluated data and restore original data. */ + BKE_object_free_derived_caches(object); + + /* Evaluate modifiers. */ + Curves *curves = static_cast<Curves *>(object->data); + Curves *curves_eval = curves_evaluate_modifiers(depsgraph, scene, object, curves); + + /* Assign evaluated object. */ + const bool is_owned = (curves != curves_eval); + BKE_object_eval_assign_data(object, &curves_eval->id, is_owned); +} + +/* Draw Cache */ + +void (*BKE_curves_batch_cache_dirty_tag_cb)(Curves *curves, int mode) = nullptr; +void (*BKE_curves_batch_cache_free_cb)(Curves *curves) = nullptr; + +void BKE_curves_batch_cache_dirty_tag(Curves *curves, int mode) +{ + if (curves->batch_cache) { + BKE_curves_batch_cache_dirty_tag_cb(curves, mode); + } +} + +void BKE_curves_batch_cache_free(Curves *curves) +{ + if (curves->batch_cache) { + BKE_curves_batch_cache_free_cb(curves); + } +} |