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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "node_geometry_util.hh"
#include "NOD_socket_search_link.hh"
namespace blender::nodes::node_geo_remove_attribute_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Geometry"));
b.add_input<decl::String>(N_("Name")).is_attribute_name();
b.add_output<decl::Geometry>(N_("Geometry"));
}
static void node_geo_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
const std::string name = params.extract_input<std::string>("Name");
if (name.empty()) {
params.set_output("Geometry", std::move(geometry_set));
return;
}
if (!bke::allow_procedural_attribute_access(name)) {
params.error_message_add(NodeWarningType::Info, TIP_(bke::no_procedural_access_message));
params.set_output("Geometry", std::move(geometry_set));
return;
}
std::atomic<bool> attribute_exists = false;
std::atomic<bool> cannot_delete = false;
geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
for (const GeometryComponentType type : {GEO_COMPONENT_TYPE_MESH,
GEO_COMPONENT_TYPE_POINT_CLOUD,
GEO_COMPONENT_TYPE_CURVE,
GEO_COMPONENT_TYPE_INSTANCES}) {
if (geometry_set.has(type)) {
/* First check if the attribute exists before getting write access,
* to avoid potentially expensive unnecessary copies. */
const GeometryComponent &read_only_component = *geometry_set.get_component_for_read(type);
if (read_only_component.attribute_exists(name)) {
attribute_exists = true;
}
else {
continue;
}
GeometryComponent &component = geometry_set.get_component_for_write(type);
if (!component.attribute_try_delete(name)) {
cannot_delete = true;
}
}
}
});
if (attribute_exists && !cannot_delete) {
params.used_named_attribute(name, eNamedAttrUsage::Remove);
}
if (!attribute_exists) {
params.error_message_add(NodeWarningType::Info,
TIP_("Attribute does not exist: \"") + name + "\"");
}
if (cannot_delete) {
params.error_message_add(NodeWarningType::Warning,
TIP_("Cannot delete built-in attribute with name \"") + name + "\"");
}
params.set_output("Geometry", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_remove_attribute_cc
void register_node_type_geo_remove_attribute()
{
namespace file_ns = blender::nodes::node_geo_remove_attribute_cc;
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_REMOVE_ATTRIBUTE, "Remove Named Attribute", NODE_CLASS_ATTRIBUTE);
ntype.declare = file_ns::node_declare;
node_type_size(&ntype, 170, 100, 700);
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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