369 lines
14 KiB
C++
369 lines
14 KiB
C++
//
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// Created by brett on 7/11/23.
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//
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#ifndef PARKSNREC_GENETIC_H
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#define PARKSNREC_GENETIC_H
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#include <genetic/old/operators.h>
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#include <imgui.h>
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#include <ImNodes.h>
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#include "ImNodesEz.h"
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#include <queue>
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#include <blt/profiling/profiler.h>
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#include <unordered_set>
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namespace parks::genetic {
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class InvalidTreeException : public std::runtime_error {
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public:
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explicit InvalidTreeException(const std::string& message): std::runtime_error(message) {}
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};
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class OperatorSet {
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private:
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std::unordered_set<Operators> hasOperators;
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std::vector<Operator*> operators;
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template <typename E>
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constexpr typename std::underlying_type<E>::type to_underlying(E e) noexcept {
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return static_cast<typename std::underlying_type<E>::type>(e);
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}
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void set(Operators code, Operator* op){
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operators[to_underlying(code)] = (op);
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hasOperators.insert(code);
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}
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public:
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OperatorSet() {
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operators.reserve(sizeof(operatorInfo) / sizeof(OperatorProperties));
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set(Operators::X, new XOperator);
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set(Operators::Y, new YOperator);
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set(Operators::RandScalar, new RandomScalarOperator);
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set(Operators::RandColor, new RandomColorOperator);
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set(Operators::Multiplication, new MultiplicationOperator);
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set(Operators::Addition, new AdditionOperator);
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set(Operators::Subtraction, new SubtractionOperator);
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set(Operators::Modulo, new ModOperator);
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set(Operators::Min, new MinOperator);
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set(Operators::Max, new MaxOperator);
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set(Operators::Log, new LogOperator);
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set(Operators::PerlinBW, new PerlinBWOperator);
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set(Operators::PerlinColor, new PerlinColorOperator);
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set(Operators::PerlinRidge, new PerlinRidgeOperator);
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set(Operators::PerlinFBM, new PerlinFBMOperator);
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set(Operators::PerlinTurbulence, new PerlinTurbulenceOperator);
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set(Operators::ColorNoise, new ColorNoiseOperator);
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};
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OperatorSet(OperatorSet& set1, OperatorSet& set2){
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operators.reserve(sizeof(operatorInfo) / sizeof(OperatorProperties));
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for (size_t i = 0; i < operators.size(); i++)
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set((Operators)i, operators[i]->breed(set2[i]));
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}
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OperatorSet& mutate(){
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for (auto& o : operators)
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if (chance(50))
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o->mutate();
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}
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Operator* operator[](size_t index) const {
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return operators[index];
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}
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[[nodiscard]] int randomOperator(){
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auto begin = hasOperators.begin();
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std::advance(begin, randomInt(0, (int)hasOperators.size()));
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return to_underlying(*begin);
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}
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[[nodiscard]] int randomBaseOperator() {
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const Operators base[] = {
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Operators::X,
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Operators::Y,
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//Operators::RandColor,
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//Operators::RandScalar
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};
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return to_underlying(base[randomInt(0, sizeof(base) / sizeof(Operators))]);
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}
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~OperatorSet(){
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for (Operator* op : operators)
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delete op;
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}
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};
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class Program;
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class Node {
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private:
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friend Program;
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Node* left;
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Node* right;
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OperatorSet& set;
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int op = 0;
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public:
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/**
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* Gives ownership of the left / right node to this node!
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* @param left left subtree
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* @param right right subtree
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* @param op operator to apply
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*/
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Node(OperatorSet& set, int op, Node* left = nullptr, Node* right = nullptr): left(left), right(right), set(set), op(op) {
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if (op == -1)
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throw InvalidTreeException("Node operator must be assigned!");
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}
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/**
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* Applies the subtree operators by supplying the x / y / time params to the left and right subtrees then using the results in the operator
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* @param x current x in the image
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* @param y current y in the image
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* @param time current time
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* @return operator value
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*/
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Color apply(double x, double y, unsigned int time){
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Color left_v(0);
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Color right_v(0);
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int argCount = 0;
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if (left != nullptr) {
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left_v = left->apply(x, y, time);
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argCount |= 0x2;
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}
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if (right != nullptr) {
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argCount |= 0x1;
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right_v = right->apply(x, y, time);
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}
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OperatorArguments args{x, y, time, argCount, left_v, right_v};
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return set[op]->apply(args);;
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}
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~Node() {
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delete left;
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delete right;
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}
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};
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class Program {
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private:
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struct ImNode_t
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{
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int depth;
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size_t index;
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int opCode;
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ImVec2 pos{};
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bool selected{};
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ImNodes::Ez::SlotInfo inputs[1];
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ImNodes::Ez::SlotInfo outputs[2];
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};
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int height = 0;
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Node* root;
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OperatorSet set;
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std::vector<ImNode_t> nodes;
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Node* constructLeaf(){
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return new Node(set, set.randomBaseOperator(), nullptr, nullptr);
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}
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Node* constructTree(int depth) {
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// TODO: remove magic numbers!
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if (depth == 0)
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return constructLeaf();
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if (chance(5))
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return constructLeaf();
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auto opcode = set.randomOperator();
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auto acceptsInput = operatorInfo[opcode].acceptsInput;
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auto hasLeftSubtree = acceptsInput & 0x2;
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auto hasRightSubtree = acceptsInput & 0x1;
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return new Node(set, opcode, hasLeftSubtree ? constructTree(depth - 1) : nullptr,
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hasRightSubtree ? constructTree(depth - 1) : nullptr);
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}
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Node* copyTree(Node* root) {
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Node* left = nullptr;
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Node* right = nullptr;
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if (root->left != nullptr)
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left = copyTree(root->left);
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if (root->right != nullptr)
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right = copyTree(root->right);
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return new Node(set, root->op, left, right);
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}
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int heightInternal(Node* parent){
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if (parent == nullptr)
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return 1;
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int left = heightInternal(parent->left);
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int right = heightInternal(parent->right);
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return std::max(left, right) + 1;
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}
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void constructNodeList() {
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if (root == nullptr)
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return;
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std::deque<Node*> nodesQueue;
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nodesQueue.push_back(root);
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int depth = 0;
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while (!nodesQueue.empty()) {
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auto levelSize = nodesQueue.size();
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auto currentLevelSize = nodesQueue.size();
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while (currentLevelSize-- != 0){
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auto node = nodesQueue.front();
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nodesQueue.pop_front();
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if (node == nullptr)
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continue;
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nodesQueue.push_back(node->left);
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nodesQueue.push_back(node->right);
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ImNode_t newNode;
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newNode.depth = depth;
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newNode.index = currentLevelSize;
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newNode.opCode = node->op;
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newNode.pos = {static_cast<float>(250 * depth), static_cast<float>(100 * currentLevelSize)};
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newNode.inputs[0] = {"In", 1};
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newNode.outputs[0] = {"Left", 1};
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newNode.outputs[1] = {"Right", 1};
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newNode.selected = false;
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nodes.push_back(newNode);
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}
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depth++;
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}
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}
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Program(Program* program1, Program* program2){
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set = OperatorSet{program1->set, program2->set};
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root = copyTree(program1->root);
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// 1 point crossover for now
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Node* search = root;
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Node* parent = root;
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if (chance(50))
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search = search->left;
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else
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search = search->right;
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while (true){
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if (search->left != nullptr) {
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if (chance(50)) {
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parent = search;
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search = search->left;
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}
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}
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if (search->right != nullptr) {
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if (chance(50)) {
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parent = search;
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search = search->right;
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}
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}
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if ((chance(25) && search != parent) || (search->left == nullptr && search->right == nullptr))
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break;
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}
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Node* replace = program2->root;
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while (true){
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if (replace->left != nullptr) {
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if (chance(50))
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replace = replace->left;
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}
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if (replace->right != nullptr) {
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if (chance(50))
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replace = replace->right;
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}
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if (chance(25) || (replace->left == nullptr && replace->right == nullptr))
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break;
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}
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if (parent->left == search){
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delete parent->left;
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parent->left = copyTree(replace);
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} else {
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delete parent->right;
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parent->right = copyTree(replace);
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}
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constructNodeList();
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}
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public:
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Program(){
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root = constructTree(7);
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//root = new Node(set, (int)Operators::ColorNoise, nullptr, nullptr);
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// root = new Node(set, (int)Operators::Multiplication, new Node(set, (int)Operators::X,
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// nullptr, nullptr), new Node(set, (int)Operators::Y,
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// nullptr, nullptr));
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// root = new Node(set, (int)Operators::PerlinColor, new Node(set, (int)Operators::X,
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// nullptr, nullptr), new Node(set, (int)Operators::Y,
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// nullptr,
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// nullptr));
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constructNodeList();
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// root = new Node(set, 12, new Node(set, 5, new Node(set, 16, nullptr, nullptr), new Node(set, 0,
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// nullptr,
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// nullptr)),
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// new Node(set, 5, new Node(set, 16, nullptr, nullptr), new Node(set, 1,
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// nullptr,
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// nullptr)));
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}
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void mutate(){
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set.mutate();
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}
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Program* crossover(Program* program){
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return new Program(this, program);
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}
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int getHeight(){
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if (height != 0)
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return height;
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height = heightInternal(root);
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}
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void drawTree(){
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static ImNodes::Ez::Context* context = ImNodes::Ez::CreateContext();
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IM_UNUSED(context);
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if (ImGui::Begin("ImNodes", nullptr, ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse))
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{
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ImNodes::Ez::BeginCanvas();
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for (ImNode_t& node : nodes)
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{
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if (ImNodes::Ez::BeginNode(&node, ("D: " + std::to_string(node.depth) + " | " + std::to_string(node.index) + " : " + operatorInfo[node.opCode].opCode).c_str(), &node.pos, &node.selected))
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{
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ImNodes::Ez::InputSlots(node.inputs, 1);
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ImNodes::Ez::OutputSlots(node.outputs, 2);
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ImNodes::Ez::EndNode();
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}
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}
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//ImNodes::Connection(&nodes[1], "In", &nodes[0], "Out");
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//ImNodes::Connection(&nodes[2], "In", &nodes[0], "Out");
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ImNodes::Ez::EndCanvas();
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}
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ImGui::End();
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}
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Color apply(double x, double y, unsigned int time){
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return root->apply(x, y, time);
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}
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~Program(){
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delete root;
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}
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};
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inline unsigned char filter(double input){
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return (unsigned char) ((unsigned long)std::abs(((input) * 255)) % 255);
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}
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}
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#endif //PARKSNREC_GENETIC_H
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