28cef56ad2
By capturing multiple attributes with one node, the user can make sure that those are evaluated together in the same context. This can be quite a bit more efficient compared to capturing multiple fields separately (also because we don't optimize grouping multiple capture nodes together yet). The change is fully backward compatible. Forward compatibility has been added for some cases. Especially, files created in older versions that are saved with this newer version will still work in the older version. Co-authored-by: Hans Goudey <hans@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/121665
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "DNA_node_types.h"
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#include "NOD_socket_items.hh"
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namespace blender::nodes {
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/**
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* Makes it possible to use various functions (e.g. the ones in `NOD_socket_items.hh`) for menu
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* switch node items.
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*/
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struct MenuSwitchItemsAccessor {
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using ItemT = NodeEnumItem;
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static StructRNA *item_srna;
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static int node_type;
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static constexpr const char *node_idname = "GeometryNodeMenuSwitch";
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static constexpr bool has_type = false;
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static constexpr bool has_name = true;
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static constexpr bool has_single_identifier_str = true;
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static socket_items::SocketItemsRef<NodeEnumItem> get_items_from_node(bNode &node)
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{
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auto *storage = static_cast<NodeMenuSwitch *>(node.storage);
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return {&storage->enum_definition.items_array,
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&storage->enum_definition.items_num,
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&storage->enum_definition.active_index};
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}
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static void copy_item(const NodeEnumItem &src, NodeEnumItem &dst)
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{
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dst = src;
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dst.name = BLI_strdup_null(dst.name);
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dst.description = BLI_strdup_null(dst.description);
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}
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static void destruct_item(NodeEnumItem *item)
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{
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MEM_SAFE_FREE(item->name);
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MEM_SAFE_FREE(item->description);
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}
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static void blend_write(BlendWriter *writer, const bNode &node);
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static void blend_read_data(BlendDataReader *reader, bNode &node);
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static char **get_name(NodeEnumItem &item)
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{
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return &item.name;
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}
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static void init_with_name(bNode &node, NodeEnumItem &item, const char *name)
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{
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auto *storage = static_cast<NodeMenuSwitch *>(node.storage);
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item.identifier = storage->enum_definition.next_identifier++;
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socket_items::set_item_name_and_make_unique<MenuSwitchItemsAccessor>(node, item, name);
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}
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static std::string socket_identifier_for_item(const NodeEnumItem &item)
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{
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return "Item_" + std::to_string(item.identifier);
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}
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};
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} // namespace blender::nodes
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