diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc')
| -rw-r--r-- | source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc new file mode 100644 index 00000000000..1f241e1f20e --- /dev/null +++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_convert.cc @@ -0,0 +1,194 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "UI_interface.h" +#include "UI_resources.h" + +#include "node_geometry_util.hh" + +namespace blender::nodes::node_geo_legacy_attribute_convert_cc { + +static void node_declare(NodeDeclarationBuilder &b) +{ + b.add_input<decl::Geometry>(N_("Geometry")); + b.add_input<decl::String>(N_("Attribute")); + b.add_input<decl::String>(N_("Result")); + b.add_output<decl::Geometry>(N_("Geometry")); +} + +static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr) +{ + uiLayoutSetPropSep(layout, true); + uiLayoutSetPropDecorate(layout, false); + uiItemR(layout, ptr, "domain", 0, nullptr, ICON_NONE); + uiItemR(layout, ptr, "data_type", 0, IFACE_("Type"), ICON_NONE); +} + +static void node_init(bNodeTree *UNUSED(tree), bNode *node) +{ + NodeAttributeConvert *data = (NodeAttributeConvert *)MEM_callocN(sizeof(NodeAttributeConvert), + __func__); + + data->data_type = CD_AUTO_FROM_NAME; + data->domain = ATTR_DOMAIN_AUTO; + node->storage = data; +} + +static AttributeMetaData get_result_domain_and_type(const GeometryComponent &component, + const StringRef source_name, + const StringRef result_name) +{ + std::optional<AttributeMetaData> result_info = component.attribute_get_meta_data(result_name); + if (result_info) { + return *result_info; + } + std::optional<AttributeMetaData> source_info = component.attribute_get_meta_data(source_name); + if (source_info) { + return *source_info; + } + /* The node won't do anything in this case, but we still have to return a value. */ + return AttributeMetaData{ATTR_DOMAIN_POINT, CD_PROP_BOOL}; +} + +static bool conversion_can_be_skipped(const GeometryComponent &component, + const StringRef source_name, + const StringRef result_name, + const AttributeDomain result_domain, + const CustomDataType result_type) +{ + if (source_name != result_name) { + return false; + } + std::optional<AttributeMetaData> info = component.attribute_get_meta_data(result_name); + if (!info) { + return false; + } + if (info->domain != result_domain) { + return false; + } + if (info->data_type != result_type) { + return false; + } + return true; +} + +static void attribute_convert_calc(GeometryComponent &component, + const GeoNodeExecParams ¶ms, + const StringRef source_name, + const StringRef result_name, + const CustomDataType data_type, + const AttributeDomain domain) +{ + const AttributeMetaData auto_info = get_result_domain_and_type( + component, source_name, result_name); + const AttributeDomain result_domain = (domain == ATTR_DOMAIN_AUTO) ? auto_info.domain : domain; + const CustomDataType result_type = (data_type == CD_AUTO_FROM_NAME) ? auto_info.data_type : + data_type; + + if (conversion_can_be_skipped(component, source_name, result_name, result_domain, result_type)) { + return; + } + + GVArray source_attribute = component.attribute_try_get_for_read( + source_name, result_domain, result_type); + if (!source_attribute) { + params.error_message_add(NodeWarningType::Error, + TIP_("No attribute with name \"") + source_name + "\""); + return; + } + + OutputAttribute result_attribute = component.attribute_try_get_for_output_only( + result_name, result_domain, result_type); + if (!result_attribute) { + return; + } + + GVArray_GSpan source_span{source_attribute}; + GMutableSpan result_span = result_attribute.as_span(); + + BLI_assert(source_span.size() == result_span.size()); + + const CPPType *cpp_type = bke::custom_data_type_to_cpp_type(result_type); + BLI_assert(cpp_type != nullptr); + + cpp_type->copy_assign_n(source_span.data(), result_span.data(), result_span.size()); + result_attribute.save(); +} + +static void node_geo_exec(GeoNodeExecParams params) +{ + GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry"); + + geometry_set = geometry_set_realize_instances(geometry_set); + + const std::string result_name = params.extract_input<std::string>("Result"); + const std::string source_name = params.extract_input<std::string>("Attribute"); + const NodeAttributeConvert &node_storage = *(const NodeAttributeConvert *)params.node().storage; + const CustomDataType data_type = static_cast<CustomDataType>(node_storage.data_type); + const AttributeDomain domain = static_cast<AttributeDomain>(node_storage.domain); + + if (result_name.empty()) { + params.set_output("Geometry", geometry_set); + return; + } + + if (geometry_set.has<MeshComponent>()) { + attribute_convert_calc(geometry_set.get_component_for_write<MeshComponent>(), + params, + source_name, + result_name, + data_type, + domain); + } + if (geometry_set.has<PointCloudComponent>()) { + attribute_convert_calc(geometry_set.get_component_for_write<PointCloudComponent>(), + params, + source_name, + result_name, + data_type, + domain); + } + if (geometry_set.has<CurveComponent>()) { + attribute_convert_calc(geometry_set.get_component_for_write<CurveComponent>(), + params, + source_name, + result_name, + data_type, + domain); + } + + params.set_output("Geometry", geometry_set); +} + +} // namespace blender::nodes::node_geo_legacy_attribute_convert_cc + +void register_node_type_geo_attribute_convert() +{ + namespace file_ns = blender::nodes::node_geo_legacy_attribute_convert_cc; + + static bNodeType ntype; + + geo_node_type_base( + &ntype, GEO_NODE_LEGACY_ATTRIBUTE_CONVERT, "Attribute Convert", NODE_CLASS_ATTRIBUTE, 0); + ntype.declare = file_ns::node_declare; + ntype.geometry_node_execute = file_ns::node_geo_exec; + ntype.draw_buttons = file_ns::node_layout; + node_type_init(&ntype, file_ns::node_init); + node_type_storage( + &ntype, "NodeAttributeConvert", node_free_standard_storage, node_copy_standard_storage); + + nodeRegisterType(&ntype); +} |