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Geometry Nodes: add method to get attribute by name and type

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This is needed by the upcoming Attribute Transfer node. It changes
its behavior based on what domain the attribute is on.
This commit is contained in:
Jacques Lucke
2021-04-21 17:07:00 +02:00
parent 1dd17726f2
commit 3da74c1c18
2 changed files with 23 additions and 0 deletions
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17
source/blender/blenkernel/intern/attribute_access.cc
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@@ -786,6 +786,23 @@ std::unique_ptr<blender::bke::GVArray> GeometryComponent::attribute_try_get_for_
return std::move(attribute.varray);
}
blender::bke::ReadAttributeLookup GeometryComponent::attribute_try_get_for_read(
const blender::StringRef attribute_name, const CustomDataType data_type) const
{
blender::bke::ReadAttributeLookup attribute = this->attribute_try_get_for_read(attribute_name);
if (!attribute) {
return {};
}
const blender::fn::CPPType *type = blender::bke::custom_data_type_to_cpp_type(data_type);
BLI_assert(type != nullptr);
if (attribute.varray->type() == *type) {
return attribute;
}
const blender::nodes::DataTypeConversions &conversions =
blender::nodes::get_implicit_type_conversions();
return {conversions.try_convert(std::move(attribute.varray), *type), attribute.domain};
}
std::unique_ptr<blender::bke::GVArray> GeometryComponent::attribute_get_for_read(
const StringRef attribute_name,
const AttributeDomain domain,