233 lines
7.4 KiB
C++
233 lines
7.4 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __FN_MULTI_FUNCTION_BUILDER_HH__
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#define __FN_MULTI_FUNCTION_BUILDER_HH__
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/** \file
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* \ingroup fn
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*
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* This file contains several utilities to create multi-functions with less redundant code.
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*/
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#include <functional>
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#include "FN_multi_function.hh"
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namespace blender {
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namespace fn {
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/**
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* Generates a multi-function with the following parameters:
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* 1. single input (SI) of type In1
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* 2. single output (SO) of type Out1
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*
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* This example creates a function that adds 10 to the incoming values:
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* CustomMF_SI_SO<int, int> fn("add 10", [](int value) { return value + 10; });
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*/
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template<typename In1, typename Out1> class CustomMF_SI_SO : public MultiFunction {
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private:
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using FunctionT = std::function<void(IndexMask, VSpan<In1>, MutableSpan<Out1>)>;
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FunctionT m_function;
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public:
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CustomMF_SI_SO(StringRef name, FunctionT function) : m_function(std::move(function))
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{
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MFSignatureBuilder signature = this->get_builder(name);
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signature.single_input<In1>("In1");
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signature.single_output<Out1>("Out1");
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}
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template<typename ElementFuncT>
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CustomMF_SI_SO(StringRef name, ElementFuncT element_fn)
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: CustomMF_SI_SO(name, CustomMF_SI_SO::create_function(element_fn))
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{
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}
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template<typename ElementFuncT> static FunctionT create_function(ElementFuncT element_fn)
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{
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return [=](IndexMask mask, VSpan<In1> in1, MutableSpan<Out1> out1) {
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mask.foreach_index([&](uint i) { new ((void *)&out1[i]) Out1(element_fn(in1[i])); });
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};
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}
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void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
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{
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VSpan<In1> in1 = params.readonly_single_input<In1>(0);
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MutableSpan<Out1> out1 = params.uninitialized_single_output<Out1>(1);
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m_function(mask, in1, out1);
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}
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};
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/**
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* Generates a multi-function with the following parameters:
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* 1. single input (SI) of type In1
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* 2. single input (SI) of type In2
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* 3. single output (SO) of type Out1
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*/
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template<typename In1, typename In2, typename Out1>
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class CustomMF_SI_SI_SO : public MultiFunction {
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private:
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using FunctionT = std::function<void(IndexMask, VSpan<In1>, VSpan<In2>, MutableSpan<Out1>)>;
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FunctionT m_function;
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public:
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CustomMF_SI_SI_SO(StringRef name, FunctionT function) : m_function(std::move(function))
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{
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MFSignatureBuilder signature = this->get_builder(name);
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signature.single_input<In1>("In1");
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signature.single_input<In2>("In2");
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signature.single_output<Out1>("Out1");
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}
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template<typename ElementFuncT>
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CustomMF_SI_SI_SO(StringRef name, ElementFuncT element_fn)
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: CustomMF_SI_SI_SO(name, CustomMF_SI_SI_SO::create_function(element_fn))
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{
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}
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template<typename ElementFuncT> static FunctionT create_function(ElementFuncT element_fn)
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{
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return [=](IndexMask mask, VSpan<In1> in1, VSpan<In2> in2, MutableSpan<Out1> out1) {
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mask.foreach_index([&](uint i) { new ((void *)&out1[i]) Out1(element_fn(in1[i], in2[i])); });
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};
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}
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void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
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{
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VSpan<In1> in1 = params.readonly_single_input<In1>(0);
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VSpan<In2> in2 = params.readonly_single_input<In2>(1);
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MutableSpan<Out1> out1 = params.uninitialized_single_output<Out1>(2);
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m_function(mask, in1, in2, out1);
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}
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};
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/**
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* Generates a multi-function with the following parameters:
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* 1. single input (SI) of type In1
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* 2. single input (SI) of type In2
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* 3. single input (SI) of type In3
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* 4. single output (SO) of type Out1
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*/
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template<typename In1, typename In2, typename In3, typename Out1>
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class CustomMF_SI_SI_SI_SO : public MultiFunction {
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private:
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using FunctionT =
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std::function<void(IndexMask, VSpan<In1>, VSpan<In2>, VSpan<In3>, MutableSpan<Out1>)>;
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FunctionT m_function;
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public:
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CustomMF_SI_SI_SI_SO(StringRef name, FunctionT function) : m_function(std::move(function))
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{
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MFSignatureBuilder signature = this->get_builder(name);
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signature.single_input<In1>("In1");
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signature.single_input<In2>("In2");
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signature.single_input<In3>("In3");
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signature.single_output<Out1>("Out1");
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}
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template<typename ElementFuncT>
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CustomMF_SI_SI_SI_SO(StringRef name, ElementFuncT element_fn)
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: CustomMF_SI_SI_SI_SO(name, CustomMF_SI_SI_SI_SO::create_function(element_fn))
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{
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}
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template<typename ElementFuncT> static FunctionT create_function(ElementFuncT element_fn)
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{
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return [=](IndexMask mask,
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VSpan<In1> in1,
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VSpan<In2> in2,
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VSpan<In3> in3,
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MutableSpan<Out1> out1) {
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mask.foreach_index(
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[&](uint i) { new ((void *)&out1[i]) Out1(element_fn(in1[i], in2[i], in3[i])); });
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};
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}
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void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
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{
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VSpan<In1> in1 = params.readonly_single_input<In1>(0);
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VSpan<In2> in2 = params.readonly_single_input<In2>(1);
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VSpan<In3> in3 = params.readonly_single_input<In3>(2);
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MutableSpan<Out1> out1 = params.uninitialized_single_output<Out1>(3);
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m_function(mask, in1, in2, in3, out1);
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}
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};
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/**
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* Generates a multi-function with the following parameters:
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* 1. single mutable (SM) of type Mut1
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*/
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template<typename Mut1> class CustomMF_SM : public MultiFunction {
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private:
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using FunctionT = std::function<void(IndexMask, MutableSpan<Mut1>)>;
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FunctionT m_function;
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public:
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CustomMF_SM(StringRef name, FunctionT function) : m_function(std::move(function))
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{
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MFSignatureBuilder signature = this->get_builder(name);
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signature.single_mutable<Mut1>("Mut1");
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}
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template<typename ElementFuncT>
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CustomMF_SM(StringRef name, ElementFuncT element_fn)
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: CustomMF_SM(name, CustomMF_SM::create_function(element_fn))
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{
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}
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template<typename ElementFuncT> static FunctionT create_function(ElementFuncT element_fn)
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{
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return [=](IndexMask mask, MutableSpan<Mut1> mut1) {
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mask.foreach_index([&](uint i) { element_fn(mut1[i]); });
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};
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}
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void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
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{
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MutableSpan<Mut1> mut1 = params.single_mutable<Mut1>(0);
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m_function(mask, mut1);
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}
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};
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/**
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* Generates a multi-function that outputs a constant value.
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*/
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template<typename T> class CustomMF_Constant : public MultiFunction {
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private:
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T m_value;
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public:
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template<typename U> CustomMF_Constant(U &&value) : m_value(std::forward<U>(value))
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{
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MFSignatureBuilder signature = this->get_builder("Constant");
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std::stringstream ss;
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ss << m_value;
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signature.single_output<T>(ss.str());
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}
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void call(IndexMask mask, MFParams params, MFContext UNUSED(context)) const override
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{
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MutableSpan<T> output = params.uninitialized_single_output<T>(0);
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mask.foreach_index([&](uint i) { new (&output[i]) T(m_value); });
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}
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};
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} // namespace fn
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} // namespace blender
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#endif /* __FN_MULTI_FUNCTION_BUILDER_HH__ */
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