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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.
*/
#pragma once
#include "FN_generic_value_map.hh"
#include "BKE_attribute_access.hh"
#include "BKE_geometry_set.hh"
#include "BKE_persistent_data_handle.hh"
#include "DNA_node_types.h"
namespace blender::nodes {
using bke::BooleanReadAttribute;
using bke::BooleanWriteAttribute;
using bke::Color4fReadAttribute;
using bke::Color4fWriteAttribute;
using bke::Float3ReadAttribute;
using bke::Float3WriteAttribute;
using bke::FloatReadAttribute;
using bke::FloatWriteAttribute;
using bke::PersistentDataHandleMap;
using bke::PersistentObjectHandle;
using bke::ReadAttribute;
using bke::ReadAttributePtr;
using bke::WriteAttribute;
using bke::WriteAttributePtr;
using fn::CPPType;
using fn::GMutablePointer;
using fn::GValueMap;
class GeoNodeExecParams {
private:
const bNode &node_;
GValueMap<StringRef> &input_values_;
GValueMap<StringRef> &output_values_;
const PersistentDataHandleMap &handle_map_;
const Object *self_object_;
public:
GeoNodeExecParams(const bNode &node,
GValueMap<StringRef> &input_values,
GValueMap<StringRef> &output_values,
const PersistentDataHandleMap &handle_map,
const Object *self_object)
: node_(node),
input_values_(input_values),
output_values_(output_values),
handle_map_(handle_map),
self_object_(self_object)
{
}
/**
* Get the input value for the input socket with the given identifier.
*
* The node calling becomes responsible for destructing the value before it is done
* executing. This method can only be called once for each identifier.
*/
GMutablePointer extract_input(StringRef identifier)
{
#ifdef DEBUG
this->check_extract_input(identifier);
#endif
return input_values_.extract(identifier);
}
/**
* Get the input value for the input socket with the given identifier.
*
* This method can only be called once for each identifier.
*/
template<typename T> T extract_input(StringRef identifier)
{
#ifdef DEBUG
this->check_extract_input(identifier, &CPPType::get<T>());
#endif
return input_values_.extract<T>(identifier);
}
/**
* Get the input value for the input socket with the given identifier.
*
* This makes a copy of the value, which is fine for most types but should be avoided for
* geometry sets.
*/
template<typename T> T get_input(StringRef identifier) const
{
#ifdef DEBUG
this->check_extract_input(identifier, &CPPType::get<T>());
#endif
return input_values_.lookup<T>(identifier);
}
/**
* Move-construct a new value based on the given value and store it for the given socket
* identifier.
*/
void set_output_by_move(StringRef identifier, GMutablePointer value)
{
#ifdef DEBUG
BLI_assert(value.type() != nullptr);
BLI_assert(value.get() != nullptr);
this->check_set_output(identifier, *value.type());
#endif
output_values_.add_new_by_move(identifier, value);
}
/**
* Store the output value for the given socket identifier.
*/
template<typename T> void set_output(StringRef identifier, T &&value)
{
#ifdef DEBUG
this->check_set_output(identifier, CPPType::get<std::decay_t<T>>());
#endif
output_values_.add_new(identifier, std::forward<T>(value));
}
/**
* Get the node that is currently being executed.
*/
const bNode &node() const
{
return node_;
}
const PersistentDataHandleMap &handle_map() const
{
return handle_map_;
}
const Object *self_object() const
{
return self_object_;
}
/**
* Creates a read-only attribute based on node inputs. The method automatically detects which
* input with the given name is available.
*/
ReadAttributePtr get_input_attribute(const StringRef name,
const GeometryComponent &component,
const AttributeDomain domain,
const CustomDataType type,
const void *default_value) const;
template<typename T>
bke::TypedReadAttribute<T> get_input_attribute(const StringRef name,
const GeometryComponent &component,
const AttributeDomain domain,
const T &default_value) const
{
const CustomDataType type = bke::cpp_type_to_custom_data_type(CPPType::get<T>());
return this->get_input_attribute(name, component, domain, type, &default_value);
}
/**
* Get the type of an input property or the associated constant socket types with the
* same names. Fall back to the default value if no attribute exists with the name.
*/
CustomDataType get_input_attribute_data_type(const StringRef name,
const GeometryComponent &component,
const CustomDataType default_type) const;
private:
/* Utilities for detecting common errors at when using this class. */
void check_extract_input(StringRef identifier, const CPPType *requested_type = nullptr) const;
void check_set_output(StringRef identifier, const CPPType &value_type) const;
/* Find the active socket socket with the input name (not the identifier). */
const bNodeSocket *find_available_socket(const StringRef name) const;
};
} // namespace blender::nodes
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