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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <utility>
#include "BKE_attribute_math.hh"
#include "BKE_customdata.h"
#include "BKE_deform.h"
#include "BKE_geometry_fields.hh"
#include "BKE_geometry_set.hh"
#include "BKE_mesh.h"
#include "BKE_pointcloud.h"
#include "BKE_type_conversions.hh"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_pointcloud_types.h"
#include "BLI_color.hh"
#include "BLI_math_vec_types.hh"
#include "BLI_span.hh"
#include "BLT_translation.h"
#include "CLG_log.h"
#include "attribute_access_intern.hh"
using blender::float3;
using blender::GMutableSpan;
using blender::GSpan;
using blender::GVArrayImpl_For_GSpan;
using blender::Set;
using blender::StringRef;
using blender::StringRefNull;
using blender::bke::AttributeIDRef;
namespace blender::bke {
std::ostream &operator<<(std::ostream &stream, const AttributeIDRef &attribute_id)
{
if (attribute_id.is_named()) {
stream << attribute_id.name();
}
else if (attribute_id.is_anonymous()) {
const AnonymousAttributeID &anonymous_id = attribute_id.anonymous_id();
stream << "<" << BKE_anonymous_attribute_id_debug_name(&anonymous_id) << ">";
}
else {
stream << "<none>";
}
return stream;
}
const char *no_procedural_access_message =
"This attribute can not be accessed in a procedural context";
bool allow_procedural_attribute_access(StringRef attribute_name)
{
return !attribute_name.startswith(".selection");
}
static int attribute_data_type_complexity(const eCustomDataType data_type)
{
switch (data_type) {
case CD_PROP_BOOL:
return 0;
case CD_PROP_INT8:
return 1;
case CD_PROP_INT32:
return 2;
case CD_PROP_FLOAT:
return 3;
case CD_PROP_FLOAT2:
return 4;
case CD_PROP_FLOAT3:
return 5;
case CD_PROP_BYTE_COLOR:
return 6;
case CD_PROP_COLOR:
return 7;
#if 0 /* These attribute types are not supported yet. */
case CD_PROP_STRING:
return 6;
#endif
default:
/* Only accept "generic" custom data types used by the attribute system. */
BLI_assert_unreachable();
return 0;
}
}
eCustomDataType attribute_data_type_highest_complexity(Span<eCustomDataType> data_types)
{
int highest_complexity = INT_MIN;
eCustomDataType most_complex_type = CD_PROP_COLOR;
for (const eCustomDataType data_type : data_types) {
const int complexity = attribute_data_type_complexity(data_type);
if (complexity > highest_complexity) {
highest_complexity = complexity;
most_complex_type = data_type;
}
}
return most_complex_type;
}
/**
* \note Generally the order should mirror the order of the domains
* established in each component's ComponentAttributeProviders.
*/
static int attribute_domain_priority(const eAttrDomain domain)
{
switch (domain) {
case ATTR_DOMAIN_INSTANCE:
return 0;
case ATTR_DOMAIN_CURVE:
return 1;
case ATTR_DOMAIN_FACE:
return 2;
case ATTR_DOMAIN_EDGE:
return 3;
case ATTR_DOMAIN_POINT:
return 4;
case ATTR_DOMAIN_CORNER:
return 5;
default:
/* Domain not supported in nodes yet. */
BLI_assert_unreachable();
return 0;
}
}
eAttrDomain attribute_domain_highest_priority(Span<eAttrDomain> domains)
{
int highest_priority = INT_MIN;
eAttrDomain highest_priority_domain = ATTR_DOMAIN_CORNER;
for (const eAttrDomain domain : domains) {
const int priority = attribute_domain_priority(domain);
if (priority > highest_priority) {
highest_priority = priority;
highest_priority_domain = domain;
}
}
return highest_priority_domain;
}
static AttributeIDRef attribute_id_from_custom_data_layer(const CustomDataLayer &layer)
{
if (layer.anonymous_id != nullptr) {
return layer.anonymous_id;
}
return layer.name;
}
static bool add_builtin_type_custom_data_layer_from_init(CustomData &custom_data,
const eCustomDataType data_type,
const int domain_num,
const AttributeInit &initializer)
{
switch (initializer.type) {
case AttributeInit::Type::Default: {
void *data = CustomData_add_layer(&custom_data, data_type, CD_DEFAULT, nullptr, domain_num);
return data != nullptr;
}
case AttributeInit::Type::VArray: {
void *data = CustomData_add_layer(&custom_data, data_type, CD_DEFAULT, nullptr, domain_num);
if (data == nullptr) {
return false;
}
const GVArray &varray = static_cast<const AttributeInitVArray &>(initializer).varray;
varray.materialize_to_uninitialized(varray.index_range(), data);
return true;
}
case AttributeInit::Type::MoveArray: {
void *source_data = static_cast<const AttributeInitMove &>(initializer).data;
void *data = CustomData_add_layer(
&custom_data, data_type, CD_ASSIGN, source_data, domain_num);
if (data == nullptr) {
MEM_freeN(source_data);
return false;
}
return true;
}
}
BLI_assert_unreachable();
return false;
}
static void *add_generic_custom_data_layer(CustomData &custom_data,
const eCustomDataType data_type,
const eCDAllocType alloctype,
void *layer_data,
const int domain_num,
const AttributeIDRef &attribute_id)
{
if (attribute_id.is_named()) {
char attribute_name_c[MAX_NAME];
attribute_id.name().copy(attribute_name_c);
return CustomData_add_layer_named(
&custom_data, data_type, alloctype, layer_data, domain_num, attribute_name_c);
}
const AnonymousAttributeID &anonymous_id = attribute_id.anonymous_id();
return CustomData_add_layer_anonymous(
&custom_data, data_type, alloctype, layer_data, domain_num, &anonymous_id);
}
static bool add_custom_data_layer_from_attribute_init(const AttributeIDRef &attribute_id,
CustomData &custom_data,
const eCustomDataType data_type,
const int domain_num,
const AttributeInit &initializer)
{
switch (initializer.type) {
case AttributeInit::Type::Default: {
void *data = add_generic_custom_data_layer(
custom_data, data_type, CD_DEFAULT, nullptr, domain_num, attribute_id);
return data != nullptr;
}
case AttributeInit::Type::VArray: {
void *data = add_generic_custom_data_layer(
custom_data, data_type, CD_DEFAULT, nullptr, domain_num, attribute_id);
if (data == nullptr) {
return false;
}
const GVArray &varray = static_cast<const AttributeInitVArray &>(initializer).varray;
varray.materialize_to_uninitialized(varray.index_range(), data);
return true;
}
case AttributeInit::Type::MoveArray: {
void *source_data = static_cast<const AttributeInitMove &>(initializer).data;
void *data = add_generic_custom_data_layer(
custom_data, data_type, CD_ASSIGN, source_data, domain_num, attribute_id);
if (data == nullptr) {
MEM_freeN(source_data);
return false;
}
return true;
}
}
BLI_assert_unreachable();
return false;
}
static bool custom_data_layer_matches_attribute_id(const CustomDataLayer &layer,
const AttributeIDRef &attribute_id)
{
if (!attribute_id) {
return false;
}
if (attribute_id.is_anonymous()) {
return layer.anonymous_id == &attribute_id.anonymous_id();
}
return layer.name == attribute_id.name();
}
GVArray BuiltinCustomDataLayerProvider::try_get_for_read(const void *owner) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
const void *data;
if (stored_as_named_attribute_) {
data = CustomData_get_layer_named(custom_data, stored_type_, name_.c_str());
}
else {
data = CustomData_get_layer(custom_data, stored_type_);
}
if (data == nullptr) {
return {};
}
const int element_num = custom_data_access_.get_element_num(owner);
return as_read_attribute_(data, element_num);
}
GAttributeWriter BuiltinCustomDataLayerProvider::try_get_for_write(void *owner) const
{
if (writable_ != Writable) {
return {};
}
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
const int element_num = custom_data_access_.get_element_num(owner);
void *data;
if (stored_as_named_attribute_) {
data = CustomData_get_layer_named(custom_data, stored_type_, name_.c_str());
}
else {
data = CustomData_get_layer(custom_data, stored_type_);
}
if (data == nullptr) {
return {};
}
void *new_data;
if (stored_as_named_attribute_) {
new_data = CustomData_duplicate_referenced_layer_named(
custom_data, stored_type_, name_.c_str(), element_num);
}
else {
new_data = CustomData_duplicate_referenced_layer(custom_data, stored_type_, element_num);
}
if (data != new_data) {
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
data = new_data;
}
std::function<void()> tag_modified_fn;
if (update_on_write_ != nullptr) {
tag_modified_fn = [owner, update = update_on_write_]() { update(owner); };
}
return {as_write_attribute_(data, element_num), domain_, std::move(tag_modified_fn)};
}
bool BuiltinCustomDataLayerProvider::try_delete(void *owner) const
{
if (deletable_ != Deletable) {
return false;
}
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
const int element_num = custom_data_access_.get_element_num(owner);
if (stored_as_named_attribute_) {
if (CustomData_free_layer_named(custom_data, name_.c_str(), element_num)) {
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
return true;
}
return false;
}
const int layer_index = CustomData_get_layer_index(custom_data, stored_type_);
if (CustomData_free_layer(custom_data, stored_type_, element_num, layer_index)) {
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
return true;
}
return false;
}
bool BuiltinCustomDataLayerProvider::try_create(void *owner,
const AttributeInit &initializer) const
{
if (createable_ != Creatable) {
return false;
}
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return false;
}
const int element_num = custom_data_access_.get_element_num(owner);
bool success;
if (stored_as_named_attribute_) {
if (CustomData_get_layer_named(custom_data, data_type_, name_.c_str())) {
/* Exists already. */
return false;
}
success = add_custom_data_layer_from_attribute_init(
name_, *custom_data, stored_type_, element_num, initializer);
}
else {
if (CustomData_get_layer(custom_data, stored_type_) != nullptr) {
/* Exists already. */
return false;
}
success = add_builtin_type_custom_data_layer_from_init(
*custom_data, stored_type_, element_num, initializer);
}
if (success) {
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
}
return success;
}
bool BuiltinCustomDataLayerProvider::exists(const void *owner) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return false;
}
if (stored_as_named_attribute_) {
return CustomData_get_layer_named(custom_data, stored_type_, name_.c_str()) != nullptr;
}
return CustomData_get_layer(custom_data, stored_type_) != nullptr;
}
GAttributeReader CustomDataAttributeProvider::try_get_for_read(
const void *owner, const AttributeIDRef &attribute_id) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
const int element_num = custom_data_access_.get_element_num(owner);
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
if (!custom_data_layer_matches_attribute_id(layer, attribute_id)) {
continue;
}
const CPPType *type = custom_data_type_to_cpp_type((eCustomDataType)layer.type);
if (type == nullptr) {
continue;
}
GSpan data{*type, layer.data, element_num};
return {GVArray::ForSpan(data), domain_};
}
return {};
}
GAttributeWriter CustomDataAttributeProvider::try_get_for_write(
void *owner, const AttributeIDRef &attribute_id) const
{
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
const int element_num = custom_data_access_.get_element_num(owner);
for (CustomDataLayer &layer : MutableSpan(custom_data->layers, custom_data->totlayer)) {
if (!custom_data_layer_matches_attribute_id(layer, attribute_id)) {
continue;
}
if (attribute_id.is_named()) {
CustomData_duplicate_referenced_layer_named(
custom_data, layer.type, layer.name, element_num);
}
else {
CustomData_duplicate_referenced_layer_anonymous(
custom_data, layer.type, &attribute_id.anonymous_id(), element_num);
}
const CPPType *type = custom_data_type_to_cpp_type((eCustomDataType)layer.type);
if (type == nullptr) {
continue;
}
GMutableSpan data{*type, layer.data, element_num};
return {GVMutableArray::ForSpan(data), domain_};
}
return {};
}
bool CustomDataAttributeProvider::try_delete(void *owner, const AttributeIDRef &attribute_id) const
{
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return false;
}
const int element_num = custom_data_access_.get_element_num(owner);
;
for (const int i : IndexRange(custom_data->totlayer)) {
const CustomDataLayer &layer = custom_data->layers[i];
if (this->type_is_supported((eCustomDataType)layer.type) &&
custom_data_layer_matches_attribute_id(layer, attribute_id)) {
CustomData_free_layer(custom_data, layer.type, element_num, i);
return true;
}
}
return false;
}
bool CustomDataAttributeProvider::try_create(void *owner,
const AttributeIDRef &attribute_id,
const eAttrDomain domain,
const eCustomDataType data_type,
const AttributeInit &initializer) const
{
if (domain_ != domain) {
return false;
}
if (!this->type_is_supported(data_type)) {
return false;
}
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return false;
}
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
return false;
}
}
const int element_num = custom_data_access_.get_element_num(owner);
add_custom_data_layer_from_attribute_init(
attribute_id, *custom_data, data_type, element_num, initializer);
return true;
}
bool CustomDataAttributeProvider::foreach_attribute(const void *owner,
const AttributeForeachCallback callback) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return true;
}
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
const eCustomDataType data_type = (eCustomDataType)layer.type;
if (this->type_is_supported(data_type)) {
AttributeMetaData meta_data{domain_, data_type};
const AttributeIDRef attribute_id = attribute_id_from_custom_data_layer(layer);
if (!callback(attribute_id, meta_data)) {
return false;
}
}
}
return true;
}
GAttributeReader NamedLegacyCustomDataProvider::try_get_for_read(
const void *owner, const AttributeIDRef &attribute_id) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
if (layer.type == stored_type_) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
const int domain_num = custom_data_access_.get_element_num(owner);
return {as_read_attribute_(layer.data, domain_num), domain_};
}
}
}
return {};
}
GAttributeWriter NamedLegacyCustomDataProvider::try_get_for_write(
void *owner, const AttributeIDRef &attribute_id) const
{
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return {};
}
for (CustomDataLayer &layer : MutableSpan(custom_data->layers, custom_data->totlayer)) {
if (layer.type == stored_type_) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
const int element_num = custom_data_access_.get_element_num(owner);
void *data_old = layer.data;
void *data_new = CustomData_duplicate_referenced_layer_named(
custom_data, stored_type_, layer.name, element_num);
if (data_old != data_new) {
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
}
return {as_write_attribute_(layer.data, element_num), domain_};
}
}
}
return {};
}
bool NamedLegacyCustomDataProvider::try_delete(void *owner,
const AttributeIDRef &attribute_id) const
{
CustomData *custom_data = custom_data_access_.get_custom_data(owner);
if (custom_data == nullptr) {
return false;
}
for (const int i : IndexRange(custom_data->totlayer)) {
const CustomDataLayer &layer = custom_data->layers[i];
if (layer.type == stored_type_) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
const int element_num = custom_data_access_.get_element_num(owner);
CustomData_free_layer(custom_data, stored_type_, element_num, i);
if (custom_data_access_.update_custom_data_pointers) {
custom_data_access_.update_custom_data_pointers(owner);
}
return true;
}
}
}
return false;
}
bool NamedLegacyCustomDataProvider::foreach_attribute(
const void *owner, const AttributeForeachCallback callback) const
{
const CustomData *custom_data = custom_data_access_.get_const_custom_data(owner);
if (custom_data == nullptr) {
return true;
}
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
if (layer.type == stored_type_) {
AttributeMetaData meta_data{domain_, attribute_type_};
if (!callback(layer.name, meta_data)) {
return false;
}
}
}
return true;
}
void NamedLegacyCustomDataProvider::foreach_domain(
const FunctionRef<void(eAttrDomain)> callback) const
{
callback(domain_);
}
CustomDataAttributes::CustomDataAttributes()
{
CustomData_reset(&data);
size_ = 0;
}
CustomDataAttributes::~CustomDataAttributes()
{
CustomData_free(&data, size_);
}
CustomDataAttributes::CustomDataAttributes(const CustomDataAttributes &other)
{
size_ = other.size_;
CustomData_copy(&other.data, &data, CD_MASK_ALL, CD_DUPLICATE, size_);
}
CustomDataAttributes::CustomDataAttributes(CustomDataAttributes &&other)
{
size_ = other.size_;
data = other.data;
CustomData_reset(&other.data);
}
CustomDataAttributes &CustomDataAttributes::operator=(const CustomDataAttributes &other)
{
if (this != &other) {
CustomData_copy(&other.data, &data, CD_MASK_ALL, CD_DUPLICATE, other.size_);
size_ = other.size_;
}
return *this;
}
std::optional<GSpan> CustomDataAttributes::get_for_read(const AttributeIDRef &attribute_id) const
{
for (const CustomDataLayer &layer : Span(data.layers, data.totlayer)) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
const CPPType *cpp_type = custom_data_type_to_cpp_type((eCustomDataType)layer.type);
BLI_assert(cpp_type != nullptr);
return GSpan(*cpp_type, layer.data, size_);
}
}
return {};
}
GVArray CustomDataAttributes::get_for_read(const AttributeIDRef &attribute_id,
const eCustomDataType data_type,
const void *default_value) const
{
const CPPType *type = blender::bke::custom_data_type_to_cpp_type(data_type);
std::optional<GSpan> attribute = this->get_for_read(attribute_id);
if (!attribute) {
const int domain_num = this->size_;
return GVArray::ForSingle(
*type, domain_num, (default_value == nullptr) ? type->default_value() : default_value);
}
if (attribute->type() == *type) {
return GVArray::ForSpan(*attribute);
}
const blender::bke::DataTypeConversions &conversions =
blender::bke::get_implicit_type_conversions();
return conversions.try_convert(GVArray::ForSpan(*attribute), *type);
}
std::optional<GMutableSpan> CustomDataAttributes::get_for_write(const AttributeIDRef &attribute_id)
{
for (CustomDataLayer &layer : MutableSpan(data.layers, data.totlayer)) {
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
const CPPType *cpp_type = custom_data_type_to_cpp_type((eCustomDataType)layer.type);
BLI_assert(cpp_type != nullptr);
return GMutableSpan(*cpp_type, layer.data, size_);
}
}
return {};
}
bool CustomDataAttributes::create(const AttributeIDRef &attribute_id,
const eCustomDataType data_type)
{
void *result = add_generic_custom_data_layer(
data, data_type, CD_DEFAULT, nullptr, size_, attribute_id);
return result != nullptr;
}
bool CustomDataAttributes::create_by_move(const AttributeIDRef &attribute_id,
const eCustomDataType data_type,
void *buffer)
{
void *result = add_generic_custom_data_layer(
data, data_type, CD_ASSIGN, buffer, size_, attribute_id);
return result != nullptr;
}
bool CustomDataAttributes::remove(const AttributeIDRef &attribute_id)
{
for (const int i : IndexRange(data.totlayer)) {
const CustomDataLayer &layer = data.layers[i];
if (custom_data_layer_matches_attribute_id(layer, attribute_id)) {
CustomData_free_layer(&data, layer.type, size_, i);
return true;
}
}
return false;
}
void CustomDataAttributes::reallocate(const int size)
{
size_ = size;
CustomData_realloc(&data, size);
}
void CustomDataAttributes::clear()
{
CustomData_free(&data, size_);
size_ = 0;
}
bool CustomDataAttributes::foreach_attribute(const AttributeForeachCallback callback,
const eAttrDomain domain) const
{
for (const CustomDataLayer &layer : Span(data.layers, data.totlayer)) {
AttributeMetaData meta_data{domain, (eCustomDataType)layer.type};
const AttributeIDRef attribute_id = attribute_id_from_custom_data_layer(layer);
if (!callback(attribute_id, meta_data)) {
return false;
}
}
return true;
}
void CustomDataAttributes::reorder(Span<AttributeIDRef> new_order)
{
BLI_assert(new_order.size() == data.totlayer);
Map<AttributeIDRef, int> old_order;
old_order.reserve(data.totlayer);
Array<CustomDataLayer> old_layers(Span(data.layers, data.totlayer));
for (const int i : old_layers.index_range()) {
old_order.add_new(attribute_id_from_custom_data_layer(old_layers[i]), i);
}
MutableSpan layers(data.layers, data.totlayer);
for (const int i : layers.index_range()) {
const int old_index = old_order.lookup(new_order[i]);
layers[i] = old_layers[old_index];
}
CustomData_update_typemap(&data);
}
/* -------------------------------------------------------------------- */
/** \name Geometry Component
* \{ */
static blender::GVArray try_adapt_data_type(blender::GVArray varray,
const blender::CPPType &to_type)
{
const blender::bke::DataTypeConversions &conversions =
blender::bke::get_implicit_type_conversions();
return conversions.try_convert(std::move(varray), to_type);
}
GVArray GeometryFieldInput::get_varray_for_context(const fn::FieldContext &context,
IndexMask mask,
ResourceScope &UNUSED(scope)) const
{
if (const GeometryComponentFieldContext *geometry_context =
dynamic_cast<const GeometryComponentFieldContext *>(&context)) {
const GeometryComponent &component = geometry_context->geometry_component();
const eAttrDomain domain = geometry_context->domain();
return this->get_varray_for_context(component, domain, mask);
}
return {};
}
GVArray AttributeFieldInput::get_varray_for_context(const GeometryComponent &component,
const eAttrDomain domain,
IndexMask UNUSED(mask)) const
{
const eCustomDataType data_type = cpp_type_to_custom_data_type(*type_);
if (auto attributes = component.attributes()) {
return attributes->lookup(name_, domain, data_type);
}
return {};
}
std::string AttributeFieldInput::socket_inspection_name() const
{
std::stringstream ss;
ss << '"' << name_ << '"' << TIP_(" attribute from geometry");
return ss.str();
}
uint64_t AttributeFieldInput::hash() const
{
return get_default_hash_2(name_, type_);
}
bool AttributeFieldInput::is_equal_to(const fn::FieldNode &other) const
{
if (const AttributeFieldInput *other_typed = dynamic_cast<const AttributeFieldInput *>(&other)) {
return name_ == other_typed->name_ && type_ == other_typed->type_;
}
return false;
}
static StringRef get_random_id_attribute_name(const eAttrDomain domain)
{
switch (domain) {
case ATTR_DOMAIN_POINT:
case ATTR_DOMAIN_INSTANCE:
return "id";
default:
return "";
}
}
GVArray IDAttributeFieldInput::get_varray_for_context(const GeometryComponent &component,
const eAttrDomain domain,
IndexMask mask) const
{
const StringRef name = get_random_id_attribute_name(domain);
if (auto attributes = component.attributes()) {
if (GVArray attribute = attributes->lookup(name, domain, CD_PROP_INT32)) {
return attribute;
}
}
/* Use the index as the fallback if no random ID attribute exists. */
return fn::IndexFieldInput::get_index_varray(mask);
}
std::string IDAttributeFieldInput::socket_inspection_name() const
{
return TIP_("ID / Index");
}
uint64_t IDAttributeFieldInput::hash() const
{
/* All random ID attribute inputs are the same within the same evaluation context. */
return 92386459827;
}
bool IDAttributeFieldInput::is_equal_to(const fn::FieldNode &other) const
{
/* All random ID attribute inputs are the same within the same evaluation context. */
return dynamic_cast<const IDAttributeFieldInput *>(&other) != nullptr;
}
GVArray AnonymousAttributeFieldInput::get_varray_for_context(const GeometryComponent &component,
const eAttrDomain domain,
IndexMask UNUSED(mask)) const
{
const eCustomDataType data_type = cpp_type_to_custom_data_type(*type_);
return component.attributes()->lookup(anonymous_id_.get(), domain, data_type);
}
std::string AnonymousAttributeFieldInput::socket_inspection_name() const
{
std::stringstream ss;
ss << '"' << debug_name_ << '"' << TIP_(" from ") << producer_name_;
return ss.str();
}
uint64_t AnonymousAttributeFieldInput::hash() const
{
return get_default_hash_2(anonymous_id_.get(), type_);
}
bool AnonymousAttributeFieldInput::is_equal_to(const fn::FieldNode &other) const
{
if (const AnonymousAttributeFieldInput *other_typed =
dynamic_cast<const AnonymousAttributeFieldInput *>(&other)) {
return anonymous_id_.get() == other_typed->anonymous_id_.get() && type_ == other_typed->type_;
}
return false;
}
GVArray AttributeAccessor::lookup(const AttributeIDRef &attribute_id,
const std::optional<eAttrDomain> domain,
const std::optional<eCustomDataType> data_type) const
{
GAttributeReader attribute = this->lookup(attribute_id);
if (!attribute) {
return {};
}
GVArray varray = std::move(attribute.varray);
if (domain.has_value()) {
if (attribute.domain != domain) {
varray = this->adapt_domain(varray, attribute.domain, *domain);
if (!varray) {
return {};
}
}
}
if (data_type.has_value()) {
const CPPType &type = *custom_data_type_to_cpp_type(*data_type);
if (varray.type() != type) {
varray = try_adapt_data_type(std::move(varray), type);
if (!varray) {
return {};
}
}
}
return varray;
}
GVArray AttributeAccessor::lookup_or_default(const AttributeIDRef &attribute_id,
const eAttrDomain domain,
const eCustomDataType data_type,
const void *default_value) const
{
GVArray varray = this->lookup(attribute_id, domain, data_type);
if (varray) {
return varray;
}
const CPPType &type = *custom_data_type_to_cpp_type(data_type);
const int64_t domain_size = this->domain_size(domain);
if (default_value == nullptr) {
return GVArray::ForSingleRef(type, domain_size, type.default_value());
}
return GVArray::ForSingle(type, domain_size, default_value);
}
Set<AttributeIDRef> AttributeAccessor::all_ids() const
{
Set<AttributeIDRef> ids;
this->for_all(
[&](const AttributeIDRef &attribute_id, const AttributeMetaData & /* meta_data */) {
ids.add(attribute_id);
return true;
});
return ids;
}
void MutableAttributeAccessor::remove_anonymous()
{
Vector<const AnonymousAttributeID *> anonymous_ids;
for (const AttributeIDRef &id : this->all_ids()) {
if (id.is_anonymous()) {
anonymous_ids.append(&id.anonymous_id());
}
}
while (!anonymous_ids.is_empty()) {
this->remove(anonymous_ids.pop_last());
}
}
GAttributeWriter MutableAttributeAccessor::lookup_or_add_for_write(
const AttributeIDRef &attribute_id,
const eAttrDomain domain,
const eCustomDataType data_type,
const AttributeInit &initializer)
{
std::optional<AttributeMetaData> meta_data = this->lookup_meta_data(attribute_id);
if (meta_data.has_value()) {
if (meta_data->domain == domain && meta_data->data_type == data_type) {
return this->lookup_for_write(attribute_id);
}
return {};
}
if (this->add(attribute_id, domain, data_type, initializer)) {
return this->lookup_for_write(attribute_id);
}
return {};
}
GSpanAttributeWriter MutableAttributeAccessor::lookup_or_add_for_write_span(
const AttributeIDRef &attribute_id,
const eAttrDomain domain,
const eCustomDataType data_type,
const AttributeInit &initializer)
{
GAttributeWriter attribute = this->lookup_or_add_for_write(
attribute_id, domain, data_type, initializer);
if (attribute) {
return GSpanAttributeWriter{std::move(attribute), true};
}
return {};
}
GSpanAttributeWriter MutableAttributeAccessor::lookup_or_add_for_write_only_span(
const AttributeIDRef &attribute_id, const eAttrDomain domain, const eCustomDataType data_type)
{
GAttributeWriter attribute = this->lookup_or_add_for_write(attribute_id, domain, data_type);
if (attribute) {
return GSpanAttributeWriter{std::move(attribute), false};
}
return {};
}
} // namespace blender::bke
/** \} */
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