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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \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_bounds.hh"
#include "BLI_index_range.hh"
#include "BLI_listbase.h"
#include "BLI_math_base.h"
#include "BLI_math_vector.hh"
#include "BLI_rand.hh"
#include "BLI_span.hh"
#include "BLI_string.h"
#include "BLI_utildefines.h"
#include "BLI_vector.hh"
#include "BKE_anim_data.h"
#include "BKE_curves.hh"
#include "BKE_customdata.h"
#include "BKE_geometry_set.hh"
#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;
using blender::Span;
using blender::Vector;
static const char *ATTR_POSITION = "position";
static void update_custom_data_pointers(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);
new (&curves->geometry) blender::bke::CurvesGeometry();
}
static void curves_copy_data(Main *UNUSED(bmain), ID *id_dst, const ID *id_src, const int flag)
{
using namespace blender;
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));
const bke::CurvesGeometry &src = bke::CurvesGeometry::wrap(curves_src->geometry);
bke::CurvesGeometry &dst = bke::CurvesGeometry::wrap(curves_dst->geometry);
/* We need special handling here because the generic ID management code has already done a
* shallow copy from the source to the destination, and because the copy-on-write functionality
* isn't supported more generically yet. */
dst.point_num = src.point_num;
dst.curve_num = src.curve_num;
const eCDAllocType alloc_type = (flag & LIB_ID_COPY_CD_REFERENCE) ? CD_REFERENCE : CD_DUPLICATE;
CustomData_copy(&src.point_data, &dst.point_data, CD_MASK_ALL, alloc_type, dst.point_num);
CustomData_copy(&src.curve_data, &dst.curve_data, CD_MASK_ALL, alloc_type, dst.curve_num);
dst.curve_offsets = static_cast<int *>(MEM_dupallocN(src.curve_offsets));
if (curves_src->surface_uv_map != nullptr) {
curves_dst->surface_uv_map = BLI_strdup(curves_src->surface_uv_map);
}
dst.runtime = MEM_new<bke::CurvesGeometryRuntime>(__func__);
dst.runtime->type_counts = src.runtime->type_counts;
dst.update_customdata_pointers();
curves_dst->batch_cache = nullptr;
}
static void curves_free_data(ID *id)
{
Curves *curves = (Curves *)id;
BKE_animdata_free(&curves->id, false);
blender::bke::CurvesGeometry::wrap(curves->geometry).~CurvesGeometry();
BKE_curves_batch_cache_free(curves);
MEM_SAFE_FREE(curves->mat);
MEM_SAFE_FREE(curves->surface_uv_map);
}
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);
}
BKE_LIB_FOREACHID_PROCESS_IDSUPER(data, curves->surface, IDWALK_CB_NOP);
}
static void curves_blend_write(BlendWriter *writer, ID *id, const void *id_address)
{
Curves *curves = (Curves *)id;
Vector<CustomDataLayer, 16> point_layers;
Vector<CustomDataLayer, 16> curve_layers;
CustomData_blend_write_prepare(curves->geometry.point_data, point_layers);
CustomData_blend_write_prepare(curves->geometry.curve_data, curve_layers);
/* 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,
point_layers,
curves->geometry.point_num,
CD_MASK_ALL,
&curves->id);
CustomData_blend_write(writer,
&curves->geometry.curve_data,
curve_layers,
curves->geometry.curve_num,
CD_MASK_ALL,
&curves->id);
BLO_write_int32_array(writer, curves->geometry.curve_num + 1, curves->geometry.curve_offsets);
BLO_write_string(writer, curves->surface_uv_map);
BLO_write_pointer_array(writer, curves->totcol, curves->mat);
if (curves->adt) {
BKE_animdata_blend_write(writer, curves->adt);
}
}
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_num);
CustomData_blend_read(reader, &curves->geometry.curve_data, curves->geometry.curve_num);
update_custom_data_pointers(*curves);
BLO_read_int32_array(reader, curves->geometry.curve_num + 1, &curves->geometry.curve_offsets);
BLO_read_data_address(reader, &curves->surface_uv_map);
curves->geometry.runtime = MEM_new<blender::bke::CurvesGeometryRuntime>(__func__);
/* Recalculate curve type count cache that isn't saved in files. */
blender::bke::CurvesGeometry::wrap(curves->geometry).update_curve_types();
/* 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]);
}
BLO_read_id_address(reader, curves->id.lib, &curves->surface);
}
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]);
}
BLO_expand(expander, curves->surface);
}
IDTypeInfo IDType_ID_CV = {
/*id_code */ ID_CV,
/*id_filter */ FILTER_ID_CV,
/*main_listbase_index */ INDEX_ID_CV,
/*struct_size */ sizeof(Curves),
/*name */ "Curves",
/*name_plural */ "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 update_custom_data_pointers(Curves &curves)
{
blender::bke::CurvesGeometry::wrap(curves.geometry).update_customdata_pointers();
}
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);
const Curves *curves_id = static_cast<const 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__);
const blender::bke::CurvesGeometry &curves = blender::bke::CurvesGeometry::wrap(
curves_id->geometry);
float3 min(FLT_MAX);
float3 max(-FLT_MAX);
if (!curves.bounds_min_max(min, max)) {
min = float3(-1);
max = float3(1);
}
BKE_boundbox_init_from_minmax(ob->runtime.bb, min, max);
}
return ob->runtime.bb;
}
bool BKE_curves_customdata_required(Curves *UNUSED(curves), CustomDataLayer *layer)
{
return layer->type == CD_PROP_FLOAT3 && STREQ(layer->name, ATTR_POSITION);
}
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 void curves_evaluate_modifiers(struct Depsgraph *depsgraph,
struct Scene *scene,
Object *object,
GeometrySet &geometry_set)
{
/* 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->modifyGeometrySet != nullptr) {
mti->modifyGeometrySet(md, &mectx, &geometry_set);
}
}
}
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);
GeometrySet geometry_set = GeometrySet::create_with_curves(curves,
GeometryOwnershipType::ReadOnly);
curves_evaluate_modifiers(depsgraph, scene, object, geometry_set);
/* Assign evaluated object. */
Curves *curves_eval = const_cast<Curves *>(geometry_set.get_curves_for_read());
if (curves_eval == nullptr) {
curves_eval = blender::bke::curves_new_nomain(0, 0);
BKE_object_eval_assign_data(object, &curves_eval->id, true);
}
else {
BKE_object_eval_assign_data(object, &curves_eval->id, false);
}
object->runtime.geometry_set_eval = new GeometrySet(std::move(geometry_set));
}
/* 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);
}
}
namespace blender::bke {
Curves *curves_new_nomain(const int points_num, const int curves_num)
{
Curves *curves_id = static_cast<Curves *>(BKE_id_new_nomain(ID_CV, nullptr));
CurvesGeometry &curves = CurvesGeometry::wrap(curves_id->geometry);
curves.resize(points_num, curves_num);
return curves_id;
}
Curves *curves_new_nomain_single(const int points_num, const CurveType type)
{
Curves *curves_id = curves_new_nomain(points_num, 1);
CurvesGeometry &curves = CurvesGeometry::wrap(curves_id->geometry);
curves.offsets_for_write().last() = points_num;
curves.fill_curve_types(type);
return curves_id;
}
Curves *curves_new_nomain(CurvesGeometry curves)
{
Curves *curves_id = static_cast<Curves *>(BKE_id_new_nomain(ID_CV, nullptr));
bke::CurvesGeometry::wrap(curves_id->geometry) = std::move(curves);
return curves_id;
}
} // namespace blender::bke
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