072d251b8e
The semantics of checking "has_value()" (etc.) are much better than checking for an empty span when dealing with the result of an attribute lookup. This mainly affects the Bezier curve handle position attributes currently. Plenty of places assume those attributes exist now. In a couple places the code is a bit safer now, otherwise it's just a bit more obvious. Pull Request: https://projects.blender.org/blender/blender/pulls/144506
94 lines
3.7 KiB
C++
94 lines
3.7 KiB
C++
/* SPDX-FileCopyrightText: 2025 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "BKE_attribute.hh"
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#include "BKE_attribute_storage.hh"
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#include <optional>
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namespace blender::bke {
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using AttrUpdateOnChange = void (*)(void *owner);
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struct AttrBuiltinInfo {
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AttrDomain domain;
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AttrType type;
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GPointer default_value = {};
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AttributeValidator validator = {};
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bool deletable = true;
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AttrBuiltinInfo(AttrDomain domain, AttrType type) : domain(domain), type(type) {}
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};
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GAttributeReader attribute_to_reader(const Attribute &attribute,
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const AttrDomain domain,
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const int64_t domain_size);
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GAttributeWriter attribute_to_writer(void *owner,
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const Map<StringRef, AttrUpdateOnChange> &changed_tags,
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const int64_t domain_size,
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Attribute &attribute);
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Attribute::DataVariant attribute_init_to_data(const bke::AttrType data_type,
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const int64_t domain_size,
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const AttributeInit &initializer);
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GVArray get_varray_attribute(const AttributeStorage &storage,
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AttrDomain domain,
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const CPPType &cpp_type,
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StringRef name,
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int64_t domain_size,
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const void *default_value);
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template<typename T>
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inline VArray<T> get_varray_attribute(const AttributeStorage &storage,
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const AttrDomain domain,
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const StringRef name,
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const int64_t domain_size,
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const T &default_value)
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{
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GVArray varray = get_varray_attribute(
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storage, domain, CPPType::get<T>(), name, domain_size, &default_value);
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return varray.typed<T>();
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}
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std::optional<GSpan> get_span_attribute(const AttributeStorage &storage,
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AttrDomain domain,
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const CPPType &cpp_type,
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StringRef name,
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const int64_t domain_size);
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template<typename T>
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inline std::optional<Span<T>> get_span_attribute(const AttributeStorage &storage,
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const AttrDomain domain,
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const StringRef name,
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const int64_t domain_size)
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{
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const std::optional<GSpan> span = get_span_attribute(
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storage, domain, CPPType::get<T>(), name, domain_size);
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if (!span) {
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return std::nullopt;
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}
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return span->typed<T>();
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}
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GMutableSpan get_mutable_attribute(AttributeStorage &storage,
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const AttrDomain domain,
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const CPPType &cpp_type,
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const StringRef name,
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const int64_t domain_size,
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const void *default_value);
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template<typename T>
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inline MutableSpan<T> get_mutable_attribute(AttributeStorage &storage,
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const AttrDomain domain,
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const StringRef name,
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const int64_t domain_size,
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const T &default_value = T())
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{
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const GMutableSpan span = get_mutable_attribute(
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storage, domain, CPPType::get<T>(), name, domain_size, &default_value);
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return span.typed<T>();
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}
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} // namespace blender::bke
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