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/*
* 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 = MEM_cnew<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::realize_instances_legacy(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_default_remaining_outputs();
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);
}
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