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test/source/blender/nodes/intern/node_socket_declarations.cc
Jacques Lucke 42093bbe3d Nodes: have either input or output socket in declaration 
Support for having an input and output socket in the same socket declaration
builder was added for the original node panels to be able to support inline
sockets. However, those were generally disabled for now. As can be seen in the
simulation and repeat zone, inline sockets can work differently too. Having an
input and output in the same socket declaration builder builder makes some
things simpler but makes other things much harder. For example, the current
design wouldn't work all that well if the input and output socket has different
types. This is easier to do with the `align_with_previous_socket` approach.

I'm not yet entirely sure whether we want to use the same approach for
corresponding sockets in the node tree interface, but that can be tried and
decided separately.

Pull Request: https://projects.blender.org/blender/blender/pulls/119599
2024-03-18 14:36:03 +01:00

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/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_string.h"
#include "NOD_socket_declarations.hh"
#include "NOD_socket_declarations_geometry.hh"
#include "BKE_lib_id.hh"
#include "BKE_node_runtime.hh"
#include "BLI_math_vector.h"
namespace blender::nodes::decl {
/**
* \note This function only deals with declarations, not the field status of existing nodes. If the
* field status of existing nodes was stored on the sockets, an improvement would be to check the
* existing socket's current status instead of the declaration.
*/
static bool field_types_are_compatible(const SocketDeclaration &input,
const SocketDeclaration &output)
{
if (output.output_field_dependency.field_type() == OutputSocketFieldType::FieldSource) {
if (input.input_field_type == InputSocketFieldType::None) {
return false;
}
}
return true;
}
static bool sockets_can_connect(const SocketDeclaration &socket_decl,
const bNodeSocket &other_socket)
{
/* Input sockets cannot connect to input sockets, outputs cannot connect to outputs. */
if (socket_decl.in_out == other_socket.in_out) {
return false;
}
if (other_socket.runtime->declaration) {
if (socket_decl.in_out == SOCK_IN) {
if (!field_types_are_compatible(socket_decl, *other_socket.runtime->declaration)) {
return false;
}
}
else {
if (!field_types_are_compatible(*other_socket.runtime->declaration, socket_decl)) {
return false;
}
}
}
return true;
}
static bool basic_types_can_connect(const SocketDeclaration & /*socket_decl*/,
const bNodeSocket &other_socket)
{
return ELEM(other_socket.type, SOCK_FLOAT, SOCK_INT, SOCK_BOOLEAN, SOCK_VECTOR, SOCK_RGBA);
}
static void modify_subtype_except_for_storage(bNodeSocket &socket, int new_subtype)
{
const char *idname = nodeStaticSocketType(socket.type, new_subtype);
STRNCPY(socket.idname, idname);
bNodeSocketType *socktype = nodeSocketTypeFind(idname);
socket.typeinfo = socktype;
}
/* -------------------------------------------------------------------- */
/** \name #Float
* \{ */
bNodeSocket &Float::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_FLOAT,
this->subtype,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueFloat &value = *(bNodeSocketValueFloat *)socket.default_value;
value.min = this->soft_min_value;
value.max = this->soft_max_value;
value.value = this->default_value;
return socket;
}
bool Float::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_FLOAT) {
return false;
}
if (socket.typeinfo->subtype != this->subtype) {
return false;
}
bNodeSocketValueFloat &value = *(bNodeSocketValueFloat *)socket.default_value;
if (value.min != this->soft_min_value) {
return false;
}
if (value.max != this->soft_max_value) {
return false;
}
return true;
}
bool Float::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
if (this->in_out == SOCK_OUT && socket.type == SOCK_ROTATION) {
return true;
}
return basic_types_can_connect(*this, socket);
}
bNodeSocket &Float::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_FLOAT) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
if (socket.typeinfo->subtype != this->subtype) {
modify_subtype_except_for_storage(socket, this->subtype);
}
this->set_common_flags(socket);
bNodeSocketValueFloat &value = *(bNodeSocketValueFloat *)socket.default_value;
value.min = this->soft_min_value;
value.max = this->soft_max_value;
value.subtype = this->subtype;
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Int
* \{ */
bNodeSocket &Int::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_INT,
this->subtype,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueInt &value = *(bNodeSocketValueInt *)socket.default_value;
value.min = this->soft_min_value;
value.max = this->soft_max_value;
value.value = this->default_value;
return socket;
}
bool Int::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_INT) {
return false;
}
if (socket.typeinfo->subtype != this->subtype) {
return false;
}
bNodeSocketValueInt &value = *(bNodeSocketValueInt *)socket.default_value;
if (value.min != this->soft_min_value) {
return false;
}
if (value.max != this->soft_max_value) {
return false;
}
return true;
}
bool Int::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
return basic_types_can_connect(*this, socket);
}
bNodeSocket &Int::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_INT) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
if (socket.typeinfo->subtype != this->subtype) {
modify_subtype_except_for_storage(socket, this->subtype);
}
this->set_common_flags(socket);
bNodeSocketValueInt &value = *(bNodeSocketValueInt *)socket.default_value;
value.min = this->soft_min_value;
value.max = this->soft_max_value;
value.subtype = this->subtype;
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Vector
* \{ */
bNodeSocket &Vector::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_VECTOR,
this->subtype,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueVector &value = *(bNodeSocketValueVector *)socket.default_value;
copy_v3_v3(value.value, this->default_value);
value.min = this->soft_min_value;
value.max = this->soft_max_value;
return socket;
}
bool Vector::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_VECTOR) {
return false;
}
if (socket.typeinfo->subtype != this->subtype) {
return false;
}
const bNodeSocketValueVector &value = *static_cast<const bNodeSocketValueVector *>(
socket.default_value);
if (value.min != this->soft_min_value) {
return false;
}
if (value.max != this->soft_max_value) {
return false;
}
return true;
}
bool Vector::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
if (socket.type == SOCK_ROTATION) {
return true;
}
return basic_types_can_connect(*this, socket);
}
bNodeSocket &Vector::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_VECTOR) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
if (socket.typeinfo->subtype != this->subtype) {
modify_subtype_except_for_storage(socket, this->subtype);
}
this->set_common_flags(socket);
bNodeSocketValueVector &value = *(bNodeSocketValueVector *)socket.default_value;
value.subtype = this->subtype;
value.min = this->soft_min_value;
value.max = this->soft_max_value;
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Bool
* \{ */
bNodeSocket &Bool::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_BOOLEAN,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueBoolean &value = *(bNodeSocketValueBoolean *)socket.default_value;
value.value = this->default_value;
return socket;
}
bool Bool::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_BOOLEAN) {
return false;
}
return true;
}
bool Bool::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
return basic_types_can_connect(*this, socket);
}
bNodeSocket &Bool::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_BOOLEAN) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Color
* \{ */
bNodeSocket &Color::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_RGBA,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueRGBA &value = *(bNodeSocketValueRGBA *)socket.default_value;
copy_v4_v4(value.value, this->default_value);
return socket;
}
bool Color::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_RGBA) {
return false;
}
return true;
}
bool Color::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
return basic_types_can_connect(*this, socket);
}
bNodeSocket &Color::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_RGBA) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Rotation
* \{ */
bNodeSocket &Rotation::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_ROTATION,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
bNodeSocketValueRotation &value = *static_cast<bNodeSocketValueRotation *>(socket.default_value);
copy_v3_v3(value.value_euler, float3(this->default_value));
return socket;
}
bool Rotation::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_ROTATION) {
return false;
}
return true;
}
bool Rotation::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
if (this->in_out == SOCK_IN) {
return ELEM(socket.type, SOCK_ROTATION, SOCK_FLOAT, SOCK_VECTOR, SOCK_MATRIX);
}
return ELEM(socket.type, SOCK_ROTATION, SOCK_VECTOR, SOCK_MATRIX);
}
bNodeSocket &Rotation::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_ROTATION) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Matrix
* \{ */
bNodeSocket &Matrix::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_MATRIX,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
return socket;
}
bool Matrix::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_MATRIX) {
return false;
}
return true;
}
bool Matrix::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
if (this->in_out == SOCK_IN) {
return ELEM(socket.type, SOCK_MATRIX, SOCK_FLOAT, SOCK_VECTOR, SOCK_MATRIX);
}
return ELEM(socket.type, SOCK_MATRIX, SOCK_VECTOR, SOCK_MATRIX);
}
bNodeSocket &Matrix::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_MATRIX) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #String
* \{ */
bNodeSocket &String::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_STRING,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
STRNCPY(((bNodeSocketValueString *)socket.default_value)->value, this->default_value.c_str());
this->set_common_flags(socket);
return socket;
}
bool String::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_STRING) {
return false;
}
return true;
}
bool String::can_connect(const bNodeSocket &socket) const
{
return sockets_can_connect(*this, socket) && socket.type == SOCK_STRING;
}
bNodeSocket &String::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_STRING) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Menu
* \{ */
bNodeSocket &Menu::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddStaticSocket(&ntree,
&node,
this->in_out,
SOCK_MENU,
PROP_NONE,
this->identifier.c_str(),
this->name.c_str());
((bNodeSocketValueMenu *)socket.default_value)->value = this->default_value;
this->set_common_flags(socket);
return socket;
}
bool Menu::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_MENU) {
return false;
}
return true;
}
bool Menu::can_connect(const bNodeSocket &socket) const
{
return sockets_can_connect(*this, socket) && socket.type == SOCK_MENU;
}
bNodeSocket &Menu::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (socket.type != SOCK_MENU) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #IDSocketDeclaration
* \{ */
bNodeSocket &IDSocketDeclaration::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddSocket(
&ntree, &node, this->in_out, this->idname, this->identifier.c_str(), this->name.c_str());
if (this->default_value_fn) {
ID *id = this->default_value_fn(node);
/* Assumes that all ID sockets like #bNodeSocketValueObject and #bNodeSocketValueImage have the
* ID pointer at the start of the struct. */
*static_cast<ID **>(socket.default_value) = id;
id_us_plus(id);
}
this->set_common_flags(socket);
return socket;
}
bool IDSocketDeclaration::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (!STREQ(socket.idname, this->idname)) {
return false;
}
return true;
}
bool IDSocketDeclaration::can_connect(const bNodeSocket &socket) const
{
return sockets_can_connect(*this, socket) && STREQ(socket.idname, this->idname);
}
bNodeSocket &IDSocketDeclaration::update_or_build(bNodeTree &ntree,
bNode &node,
bNodeSocket &socket) const
{
if (StringRef(socket.idname) != this->idname) {
BLI_assert(socket.in_out == this->in_out);
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Geometry
* \{ */
bNodeSocket &Geometry::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddSocket(&ntree,
&node,
this->in_out,
"NodeSocketGeometry",
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
return socket;
}
bool Geometry::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_GEOMETRY) {
return false;
}
return true;
}
bool Geometry::can_connect(const bNodeSocket &socket) const
{
return sockets_can_connect(*this, socket) && socket.type == SOCK_GEOMETRY;
}
Span<bke::GeometryComponent::Type> Geometry::supported_types() const
{
return supported_types_;
}
bool Geometry::only_realized_data() const
{
return only_realized_data_;
}
bool Geometry::only_instances() const
{
return only_instances_;
}
GeometryBuilder &GeometryBuilder::supported_type(bke::GeometryComponent::Type supported_type)
{
decl_->supported_types_ = {supported_type};
return *this;
}
GeometryBuilder &GeometryBuilder::supported_type(
blender::Vector<bke::GeometryComponent::Type> supported_types)
{
decl_->supported_types_ = supported_types;
return *this;
}
GeometryBuilder &GeometryBuilder::only_realized_data(bool value)
{
decl_->only_realized_data_ = value;
return *this;
}
GeometryBuilder &GeometryBuilder::only_instances(bool value)
{
decl_->only_instances_ = value;
return *this;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Shader
* \{ */
bNodeSocket &Shader::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddSocket(&ntree,
&node,
this->in_out,
"NodeSocketShader",
this->identifier.c_str(),
this->name.c_str());
this->set_common_flags(socket);
return socket;
}
bool Shader::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_SHADER) {
return false;
}
return true;
}
bool Shader::can_connect(const bNodeSocket &socket) const
{
if (!sockets_can_connect(*this, socket)) {
return false;
}
/* Basic types can convert to shaders, but not the other way around. */
if (this->in_out == SOCK_IN) {
return ELEM(
socket.type, SOCK_VECTOR, SOCK_RGBA, SOCK_FLOAT, SOCK_INT, SOCK_BOOLEAN, SOCK_SHADER);
}
return socket.type == SOCK_SHADER;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Extend
* \{ */
bNodeSocket &Extend::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddSocket(&ntree,
&node,
this->in_out,
"NodeSocketVirtual",
this->identifier.c_str(),
this->name.c_str());
return socket;
}
bool Extend::matches(const bNodeSocket &socket) const
{
if (socket.identifier != this->identifier) {
return false;
}
return true;
}
bool Extend::can_connect(const bNodeSocket & /*socket*/) const
{
return false;
}
bNodeSocket &Extend::update_or_build(bNodeTree & /*ntree*/,
bNode & /*node*/,
bNodeSocket &socket) const
{
return socket;
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name #Custom
* \{ */
bNodeSocket &Custom::build(bNodeTree &ntree, bNode &node) const
{
bNodeSocket &socket = *nodeAddSocket(
&ntree, &node, this->in_out, idname_, this->identifier.c_str(), this->name.c_str());
if (this->init_socket_fn) {
this->init_socket_fn(node, socket, "interface");
}
return socket;
}
bool Custom::matches(const bNodeSocket &socket) const
{
if (!this->matches_common_data(socket)) {
return false;
}
if (socket.type != SOCK_CUSTOM) {
return false;
}
if (!STREQ(socket.typeinfo->idname, idname_)) {
return false;
}
return true;
}
bool Custom::can_connect(const bNodeSocket &socket) const
{
return sockets_can_connect(*this, socket) && STREQ(socket.idname, idname_);
}
bNodeSocket &Custom::update_or_build(bNodeTree &ntree, bNode &node, bNodeSocket &socket) const
{
if (!STREQ(socket.typeinfo->idname, idname_)) {
return this->build(ntree, node);
}
this->set_common_flags(socket);
return socket;
}
SocketDeclarationPtr create_extend_declaration(const eNodeSocketInOut in_out)
{
std::unique_ptr<decl::Extend> decl = std::make_unique<decl::Extend>();
decl->name = "";
decl->identifier = "__extend__";
decl->in_out = in_out;
return decl;
}
/** \} */
} // namespace blender::nodes::decl
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