making a proper widget.

tests/planet.cpp

@@ -0,0 +1,212 @@
+#ifndef PLANET_CPP
+#define PLANET_CPP
+
+#include "../util/sim/planet.hpp"
+#include "../util/grid/camera.hpp"
+#include "../util/noise/pnoise2.hpp"
+#include "../util/noise/pnoise.cpp"
+
+class planetSimUI {
+private:
+    planetsim sim;
+    Camera cam;
+    bool isRunning = false;
+    
+    // Texture Management
+    GLuint textu = 0;
+    std::mutex PreviewMutex;
+    bool updatePreview = false;
+    bool textureInitialized = false;
+    frame currentPreviewFrame;
+    int outWidth = 512;
+    int outHeight = 512;
+    float fps = 60;
+    int rayCount = 3;
+    int reflectCount = 4;
+    bool slowRender = false;
+    float lodDist = 4096.0f;
+    float lodDropoff = 0.001f;
+    bool globalIllumination = false;
+    bool useLod = true;
+    std::map<int, bool> keyStates;
+    float deltaTime = 0.16f;
+    bool orbitEquator = false;
+    float rotationRadius = 2500;
+    float angle = 0.0f;
+    const float ω = (std::pow(M_PI, 2) / 30) / 10;
+
+public:
+    planetSimUI() {
+        cam.origin = v3(4000, 4000, 4000);
+        cam.direction = (v3(0,0,0) - cam.origin).normalized();
+        cam.up = v3(0,1,0);
+        cam.fov = 60;
+        cam.rotationSpeed = M_1_PI;
+    }
+
+    ~planetSimUI() {
+        if (textu != 0) {
+            glDeleteTextures(1, &textu);
+        }
+        sim.grid.clear();
+    }
+
+    void renderUI(GLFWwindow* window) {
+        ImGui::Begin("Planet Simulation");
+        if (orbitEquator) {
+            angle += cam.rotationSpeed * deltaTime * ω;
+            
+            cam.origin[0] = sim.config.center[0] + rotationRadius * cosf(angle);
+            cam.origin[1] = sim.config.center[1];
+            cam.origin[2] = sim.config.center[2] + rotationRadius * sinf(angle);
+            
+            v3 target(sim.config.center);
+            cam.direction = (target - cam.origin).normalized();
+        }
+        glfwPollEvents();
+        for (int i = GLFW_KEY_SPACE; i <= GLFW_KEY_LAST; i++) {
+            keyStates[i] = (glfwGetKey(window, i) == GLFW_PRESS);
+        }
+        if (keyStates[GLFW_KEY_W]) cam.moveForward(deltaTime);
+        if (keyStates[GLFW_KEY_S]) cam.moveBackward(deltaTime);
+        if (keyStates[GLFW_KEY_A]) cam.moveLeft(deltaTime);
+        if (keyStates[GLFW_KEY_D]) cam.moveRight(deltaTime);
+        if (keyStates[GLFW_KEY_Z]) cam.moveUp(deltaTime);
+        if (keyStates[GLFW_KEY_X]) cam.moveDown(deltaTime);
+        if (keyStates[GLFW_KEY_Q]) cam.rotateYaw(deltaTime);
+        if (keyStates[GLFW_KEY_R]) cam.rotateYaw(-deltaTime);
+        
+        if (ImGui::CollapsingHeader("Base Configuration", ImGuiTreeNodeFlags_DefaultOpen)) {
+            ImGui::DragFloat("Radius", &sim.config.radius, 1.0f, 10.0f, 10000.0f);
+            ImGui::InputInt("Surface Points", &sim.config.surfacePoints);
+            ImGui::DragFloat("Voxel Size", &sim.config.voxelSize, 0.1f, 0.1f, 100.0f);
+            ImGui::ColorEdit3("Base Color", sim.config.color.data());
+            
+            ImGui::Separator();
+            
+            if (ImGui::Button("1. Generate Fib Sphere", ImVec2(-1, 40))) {
+                sim.generateFibSphere();
+            }
+            ImGui::Text("Current Step: %d", sim.config.currentStep);
+            ImGui::Text("Nodes: %zu", sim.config.surfaceNodes.size());
+        }
+        if (ImGui::Button("Apply Tectonics")) {
+            simulateTectonics();
+        }
+
+        if (ImGui::CollapsingHeader("Physics Parameters")) {
+            ImGui::DragFloat("Gravity (G)", &sim.config.G_ATTRACTION, 0.1f);
+            ImGui::DragFloat("Time Step", &sim.config.TIMESTEP, 0.001f, 0.0001f, 0.1f);
+            ImGui::DragFloat("Viscosity", &sim.config.dampingFactor, 0.001f, 0.0f, 1.0f);
+            ImGui::DragFloat("Pressure Stiffness", &sim.config.pressureStiffness, 10.0f);
+            ImGui::DragInt("Num Plates", &sim.config.numPlates, 1, 1, 50);
+        }
+
+        if (ImGui::CollapsingHeader("Tectonic Simulation")) {
+            ImGui::DragInt("Num Plates", &sim.config.numPlates, 1, 1, 100);
+            ImGui::DragFloat("Plate Randomness", &sim.config.plateRandom, 0.01f, 0.0f, 2.0f);
+            ImGui::DragInt("Smoothing Passes", &sim.config.smoothingPasses, 1, 0, 10);
+            ImGui::DragFloat("Mountain Height", &sim.config.mountHeight, 1.0f, 0.0f, 1000.0f);
+            ImGui::DragFloat("Valley Depth", &sim.config.valleyDepth, 1.0f, -1000.0f, 0.0f);
+            ImGui::DragFloat("Transform Roughness", &sim.config.transformRough, 1.0f, 0.0f, 500.0f);
+            ImGui::DragInt("Stress Passes", &sim.config.stressPasses, 1, 0, 20);
+
+            if (ImGui::Button("2. Simulate Tectonics", ImVec2(-1, 40))) {
+                simulateTectonics();
+            }
+        }
+
+        if (ImGui::CollapsingHeader("Camera Controls")) {
+            ImGui::DragFloat3("Origin", cam.origin.data());
+            ImGui::DragFloat3("Direction", cam.direction.data(), 0.0001f, -1.0f, 1.0f);
+            ImGui::DragFloat("Movement Speed", &cam.movementSpeed, 0.1f, 1.0f, 500.0f);
+            ImGui::DragFloat("Rotation Speed", &cam.rotationSpeed, M_1_PI, M_1_PI, M_PI);
+            ImGui::InputFloat("Rotation Distance", &rotationRadius, 10, 100);
+
+            ImGui::Checkbox("Use Slower Render", &slowRender);
+
+            if (ImGui::Button("Focus on Planet")) {
+                v3 target(sim.config.center);
+                v3 newDir = (target - cam.origin).normalized();
+                cam.direction = newDir;
+            }
+
+            if (ImGui::Button(orbitEquator ? "Stop Equator" : "Orbit Equator")) orbitEquator = !orbitEquator;
+        }
+
+        livePreview();
+        if (textureInitialized) {
+            float aspect = (float)currentPreviewFrame.getWidth() / (float)currentPreviewFrame.getHeight();
+            float availWidth = ImGui::GetContentRegionAvail().x;
+            ImGui::Image((void*)(intptr_t)textu, ImVec2(availWidth, availWidth / aspect));
+        }
+
+        ImGui::End();
+    }
+
+    void applyNoise(const NoisePreviewState& noiseState) {
+        TIME_FUNCTION;
+        auto triplanarNoise = [&](const Eigen::Vector3f& pos) -> float {
+            PNoise2 gen(noiseState.masterSeed);
+            
+            Eigen::Vector3f n = pos.normalized();
+            Eigen::Vector3f blend = n.cwiseAbs();
+            float sum = blend.x() + blend.y() + blend.z();
+            blend /= sum;
+
+            Eigen::Vector3f offsetPos = pos + Eigen::Vector3f(noiseState.offset[0], noiseState.offset[1], 0.0f);
+            float vXY = sim.evaluate2DStack(Eigen::Vector2f(offsetPos.x(), offsetPos.y()), noiseState, gen);
+            float vXZ = sim.evaluate2DStack(Eigen::Vector2f(offsetPos.x(), offsetPos.z()), noiseState, gen);
+            float vYZ = sim.evaluate2DStack(Eigen::Vector2f(offsetPos.y(), offsetPos.z()), noiseState, gen);
+
+            // Blend results
+            return vYZ * blend.x() + vXZ * blend.y() + vXY * blend.z();
+        };
+        sim._applyNoise(triplanarNoise);
+    }
+
+    void livePreview() {
+        std::lock_guard<std::mutex> lock(PreviewMutex);
+        updatePreview = true;
+        
+        sim.grid.setLODMinDistance(lodDist);
+        sim.grid.setLODFalloff(lodDropoff);
+        
+        if (slowRender) {
+            currentPreviewFrame = sim.grid.renderFrame(cam, outWidth, outHeight, frame::colormap::RGB, rayCount, reflectCount, globalIllumination, useLod);
+        } else {
+            currentPreviewFrame = sim.grid.fastRenderFrame(cam, outWidth, outHeight, frame::colormap::RGB);
+        }
+        
+        if (textu == 0) {
+            glGenTextures(1, &textu);
+        }
+        glBindTexture(GL_TEXTURE_2D, textu);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+        
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, currentPreviewFrame.getWidth(), currentPreviewFrame.getHeight(), 
+                     0, GL_RGB, GL_UNSIGNED_BYTE, currentPreviewFrame.getData().data());
+        
+        updatePreview = false;
+        textureInitialized = true;
+    }
+
+    void resetView() {
+        cam.origin = Vector3f(sim.config.gridSizeCube, sim.config.gridSizeCube, sim.config.gridSizeCube);
+        Vector3f center(sim.config.gridSizeCube / 2.0f, sim.config.gridSizeCube / 2.0f, sim.config.gridSizeCube / 2.0f);
+        cam.lookAt(center);
+    }
+
+    void simulateTectonics() {
+        sim.assignSeeds();
+        // sim.growPlatesCellular();
+        sim.growPlatesRandom();
+        //sim.fixBoundaries();
+        sim.extraplateste();
+        sim.finalizeApplyResults();
+    }
+};
+
+#endif

tests/ptest.cpp

@@ -0,0 +1,138 @@
+#include <iostream>
+#include <vector>
+#include <string>
+
+// Include GLAD/GLFW
+// Ensure these are in your include path
+#include <GLFW/glfw3.h>
+
+// ImGui
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
+
+// Include your implementation files
+// (Unity build style as requested)
+#include "../util/noise/pnoise.cpp"
+#include "planet.cpp"
+#include "../util/basicdefines.hpp"
+
+void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
+    glViewport(0, 0, width, height);
+}
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "GLFW Error %d: %s\n", error, description);
+}
+
+int main() {
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return -1;
+
+    #if defined(IMGUI_IMPL_OPENGL_ES2)
+        // GL ES 2.0 + GLSL 100 (WebGL 1.0)
+        const char* glsl_version = "#version 100";
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+        glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
+    #elif defined(IMGUI_IMPL_OPENGL_ES3)
+        // GL ES 3.0 + GLSL 300 es (WebGL 2.0)
+        const char* glsl_version = "#version 300 es";
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+        glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
+    #elif defined(__APPLE__)
+        // GL 3.2 + GLSL 150
+        const char* glsl_version = "#version 150";
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
+        glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
+        glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
+    #else
+        // GL 3.0 + GLSL 130
+        const char* glsl_version = "#version 130";
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+        glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+        //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
+        //glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // 3.0+ only
+    #endif
+
+    bool application_not_closed = true;
+    GLFWwindow* window = glfwCreateWindow((int)(1280), (int)(800), "StupidSim", nullptr, nullptr);
+    if (window == nullptr) {
+        glfwTerminate();
+        return 1;
+    }
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(1);    
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO();
+    (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+    ImGui::StyleColorsDark();
+    ImGuiStyle& style = ImGui::GetStyle();
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+
+    #ifdef __EMSCRIPTEN__
+        ImGui_ImplGlfw_InstallEmscriptenCallbacks(window, "#canvas");
+    #endif
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    planetSimUI planetApp;
+    NoisePreviewState noiseState;
+
+    if (noiseState.layers.empty()) {
+        NoiseLayer defaultLayer;
+        strcpy(defaultLayer.name, "Base Terrain");
+        defaultLayer.type = NoiseType::Fractal;
+        noiseState.layers.push_back(defaultLayer);
+    }
+    updateNoiseTexture(noiseState);
+
+    while (!glfwWindowShouldClose(window)) {
+        glfwPollEvents();
+        glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        ImGui::GetMainViewport();
+        drawNoiseLab(noiseState);
+        planetApp.renderUI(window);
+
+        ImGui::Begin("Integration Control");
+        ImGui::Text("Bridge: Noise Lab -> Planet Sim");
+        ImGui::Separator();
+        
+        ImGui::TextColored(ImVec4(0.5f, 0.8f, 1.0f, 1.0f), "Current Noise Layers: %zu", noiseState.layers.size());
+        
+        if (ImGui::Button("APPLY CURRENT NOISE TO PLANET", ImVec2(-1, 50))) {
+            planetApp.applyNoise(noiseState);
+        }
+        
+        ImGui::End();
+
+        ImGui::Render();
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+        glfwSwapBuffers(window);
+    }
+
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+    
+    FunctionTimer::printStats(FunctionTimer::Mode::ENHANCED);
+
+    return 0;
+}

util/grid/grid3eigen.hpp

@@ -957,9 +957,9 @@ public:
     }
 
     bool set(const T& data, const PointType& pos, bool visible, Eigen::Vector3f color, float size, bool active,
-            int objectId = -1, bool light = false, float emittance = 0.0f, float refraction = 0.0f, 
+            int objectId = -1, int subId = 0, bool light = false, float emittance = 0.0f, float refraction = 0.0f, 
             float reflection = 0.0f) {
-        auto pointData = std::make_shared<NodeData>(data, pos, visible, color, size, active, objectId,
+        auto pointData = std::make_shared<NodeData>(data, pos, visible, color, size, active, objectId, subId,
                                                     light, emittance, refraction, reflection);
         if (insertRecursive(root_.get(), pointData, 0)) {
             this->size++;
@@ -1073,14 +1073,10 @@ public:
         
         if (!remove(oldPos, tolerance)) return false;
         
-        bool res = set(newData, newPos, 
-                newVisible,
+        bool res = set(newData, newPos, newVisible,
                 newColor != Eigen::Vector3f(1.0f, 1.0f, 1.0f) ? newColor : pointData->color,
                 newSize > 0 ? newSize : pointData->size,
-                newActive,
-                targetObjId,
-                finalSubId,
-                newLight,
+                newActive, targetObjId, finalSubId, newLight,
                 newEmittance > 0 ? newEmittance : pointData->emittance,
                 newRefraction >= 0 ? newRefraction : pointData->refraction,
                 newReflection >= 0 ? newReflection : pointData->reflection);

util/jsonhelper.hpp

@@ -0,0 +1,93 @@
+#ifndef JSONHELPER_HPP
+#define JSONHELPER_HPP
+
+#include <string>
+#include <vector>
+#include <cctype>
+
+namespace JsonHelper {
+
+    // Helper to get string value between quotes
+    inline std::string parseString(const std::string& json, const std::string& key) {
+        size_t pos = json.find("\"" + key + "\"");
+        if (pos == std::string::npos) return "";
+        pos = json.find(":", pos);
+        if (pos == std::string::npos) return "";
+        size_t start = json.find("\"", pos);
+        if (start == std::string::npos) return "";
+        size_t end = json.find("\"", start + 1);
+        if (end == std::string::npos) return "";
+        return json.substr(start + 1, end - start - 1);
+    }
+
+    // Helper to get raw non-string value (int, float, bool)
+    inline std::string parseRaw(const std::string& json, const std::string& key) {
+        size_t pos = json.find("\"" + key + "\"");
+        if (pos == std::string::npos) return "";
+        pos = json.find(":", pos);
+        if (pos == std::string::npos) return "";
+        pos++; // skip ':'
+        
+        while (pos < json.length() && std::isspace(json[pos])) pos++;
+        size_t end = pos;
+        while (end < json.length() && json[end] != ',' && json[end] != '}' && json[end] != ']' && !std::isspace(json[end])) end++;
+        
+        return json.substr(pos, end - pos);
+    }
+
+    inline int parseInt(const std::string& json, const std::string& key, int defaultVal = 0) {
+        std::string raw = parseRaw(json, key);
+        if (raw.empty()) return defaultVal;
+        try { return std::stoi(raw); } catch(...) { return defaultVal; }
+    }
+
+    inline float parseFloat(const std::string& json, const std::string& key, float defaultVal = 0.0f) {
+        std::string raw = parseRaw(json, key);
+        if (raw.empty()) return defaultVal;
+        try { return std::stof(raw); } catch(...) { return defaultVal; }
+    }
+
+    inline bool parseBool(const std::string& json, const std::string& key, bool defaultVal = false) {
+        std::string raw = parseRaw(json, key);
+        if (raw.empty()) return defaultVal;
+        return raw == "true" || raw == "1";
+    }
+
+    // Helper to extract JSON objects out of a JSON array
+    inline std::vector<std::string> parseArray(const std::string& json, const std::string& key) {
+        std::vector<std::string> items;
+        size_t pos = json.find("\"" + key + "\"");
+        if (pos == std::string::npos) return items;
+        pos = json.find(":", pos);
+        if (pos == std::string::npos) return items;
+        pos = json.find("[", pos);
+        if (pos == std::string::npos) return items;
+        
+        int depth = 0;
+        size_t start = 0;
+        bool inString = false;
+        
+        for (size_t i = pos + 1; i < json.length(); ++i) {
+            if (json[i] == '"' && (i == 0 || json[i-1] != '\\')) {
+                inString = !inString;
+            }
+            if (!inString) {
+                if (json[i] == '{') {
+                    if (depth == 0) start = i;
+                    depth++;
+                } else if (json[i] == '}') {
+                    depth--;
+                    if (depth == 0) {
+                        items.push_back(json.substr(start, i - start + 1));
+                    }
+                } else if (json[i] == ']') {
+                    if (depth == 0) break;
+                }
+            }
+        }
+        return items;
+    }
+
+}
+
+#endif

util/noise/pnoise.cpp

@@ -6,8 +6,11 @@
 #include <cstring>
 #include <algorithm>
 #include <iostream>
+#include <fstream>
+#include <sstream>
 
 #include "./pnoise2.hpp"
+#include "../jsonhelper.hpp"
 #include "../timing_decorator.hpp"
 #include "../../imgui/imgui.h"
 #include <GLFW/glfw3.h>
@@ -194,11 +197,94 @@ inline void updateNoiseTexture(NoisePreviewState& state) {
     state.needsUpdate = false;
 }
 
+inline void saveNoiseState(const NoisePreviewState& state, const std::string& filename) {
+    std::ofstream out(filename);
+    if (!out) return;
+
+    out << "{\n";
+    out << "  \"masterSeed\": " << state.masterSeed << ",\n";
+    out << "  \"offsetX\": " << state.offset[0] << ",\n";
+    out << "  \"offsetY\": " << state.offset[1] << ",\n";
+    out << "  \"layers\": [\n";
+    
+    for (size_t i = 0; i < state.layers.size(); ++i) {
+        const auto& l = state.layers[i];
+        out << "    {\n";
+        out << "      \"enabled\": " << (l.enabled ? "true" : "false") << ",\n";
+        out << "      \"name\": \"" << l.name << "\",\n";
+        out << "      \"type\": " << (int)l.type << ",\n";
+        out << "      \"blend\": " << (int)l.blend << ",\n";
+        out << "      \"seedOffset\": " << l.seedOffset << ",\n";
+        out << "      \"scale\": " << l.scale << ",\n";
+        out << "      \"strength\": " << l.strength << ",\n";
+        out << "      \"octaves\": " << l.octaves << ",\n";
+        out << "      \"persistence\": " << l.persistence << ",\n";
+        out << "      \"lacunarity\": " << l.lacunarity << ",\n";
+        out << "      \"ridgeOffset\": " << l.ridgeOffset << "\n";
+        out << "    }" << (i < state.layers.size() - 1 ? "," : "") << "\n";
+    }
+    
+    out << "  ]\n";
+    out << "}\n";
+}
+
+inline void loadNoiseState(NoisePreviewState& state, const std::string& filename) {
+    std::ifstream in(filename);
+    if (!in) return;
+
+    std::stringstream buffer;
+    buffer << in.rdbuf();
+    std::string json = buffer.str();
+
+    state.masterSeed = JsonHelper::parseInt(json, "masterSeed", 1337);
+    state.offset[0] = JsonHelper::parseFloat(json, "offsetX", 0.0f);
+    state.offset[1] = JsonHelper::parseFloat(json, "offsetY", 0.0f);
+    
+    auto layerStrs = JsonHelper::parseArray(json, "layers");
+    state.layers.clear();
+    
+    for (const auto& lStr : layerStrs) {
+        NoiseLayer l;
+        l.enabled = JsonHelper::parseBool(lStr, "enabled", true);
+        std::string name = JsonHelper::parseString(lStr, "name");
+        if (!name.empty()) {
+            std::strncpy(l.name, name.c_str(), 31);
+            l.name[31] = '\0';
+        }
+        l.type = (NoiseType)JsonHelper::parseInt(lStr, "type", 0);
+        l.blend = (BlendMode)JsonHelper::parseInt(lStr, "blend", 0);
+        l.seedOffset = JsonHelper::parseInt(lStr, "seedOffset", 0);
+        l.scale = JsonHelper::parseFloat(lStr, "scale", 0.02f);
+        l.strength = JsonHelper::parseFloat(lStr, "strength", 1.0f);
+        l.octaves = JsonHelper::parseInt(lStr, "octaves", 4);
+        l.persistence = JsonHelper::parseFloat(lStr, "persistence", 0.5f);
+        l.lacunarity = JsonHelper::parseFloat(lStr, "lacunarity", 2.0f);
+        l.ridgeOffset = JsonHelper::parseFloat(lStr, "ridgeOffset", 1.0f);
+        
+        state.layers.push_back(l);
+    }
+    state.needsUpdate = true;
+}
+
 inline void drawNoiseLab(NoisePreviewState& noiseState) {
     ImGui::Begin("2D Noise Lab");
     
-    // Master Controls
     bool changed = false;
+    
+    static char filenameBuffer[128] = "output/noise_preset.json";
+    ImGui::InputText("File", filenameBuffer, sizeof(filenameBuffer));
+    ImGui::SameLine();
+    if (ImGui::Button("Save JSON")) {
+        saveNoiseState(noiseState, filenameBuffer);
+    }
+    ImGui::SameLine();
+    if (ImGui::Button("Load JSON")) {
+        loadNoiseState(noiseState, filenameBuffer);
+        changed = true;
+    }
+
+    ImGui::Separator();
+
     changed |= ImGui::InputInt("Master Seed", &noiseState.masterSeed);
     changed |= ImGui::DragFloat2("Pan Offset", noiseState.offset, 1.0f);
     
@@ -254,7 +340,7 @@ inline void drawNoiseLab(NoisePreviewState& noiseState) {
         }
 
         if (open) {
-            ImGui::Checkbox("##enabled", &layer.enabled);
+            if (ImGui::Checkbox("##enabled", &layer.enabled)) changed = true;
             ImGui::SameLine();
             ImGui::InputText("##name", layer.name, 32);
 

util/noise/pnoise2.hpp

@@ -9,6 +9,7 @@
 #include <limits>
 #include "../../eigen/Eigen/Core"
 #include "../timing_decorator.hpp"
+#include "../basicdefines.hpp"
 
 class PNoise2 {
 private:

util/sim/planet.hpp

@@ -0,0 +1,315 @@
+#ifndef PLANET_HPP
+#define PLANET_HPP
+
+#include <map>
+#include <iostream>
+#include <vector>
+#include <chrono>
+#include <thread>
+#include <atomic>
+#include <mutex>
+#include <cmath>
+#include <random>
+#include <algorithm>
+#include <queue>
+#include <unordered_map>
+
+#include "../grid/grid3eigen.hpp"
+#include "../timing_decorator.cpp"
+
+#include "../imgui/imgui.h"
+#include "../imgui/backends/imgui_impl_glfw.h"
+#include "../imgui/backends/imgui_impl_opengl3.h"
+#include <GLFW/glfw3.h>
+#include "../stb/stb_image.h"
+
+using v3 = Eigen::Vector3f;
+const float Φ = M_PI * (3.0f - std::sqrt(5.0f));
+
+enum class PlateType {
+    CONTINENTAL,
+    OCEANIC,
+    MIXED
+};
+
+struct Particle {
+    float noiseDisplacement = 0.0f;
+    int plateID = -1;
+    Eigen::Vector3f basePos;
+    Eigen::Vector3f currentPos;
+    float plateDisplacement = 0.0f;
+    float temperature = -1;
+    float water = -1;
+    Eigen::Vector3f originColor;
+    bool surface = false;
+
+    //gravity factors:
+    Eigen::Matrix<float, 3, 1> velocity;
+    Eigen::Matrix<float, 3, 1> acceleration;
+    Eigen::Matrix<float, 3, 1> forceAccumulator;
+    float density = 0.0f;
+    float pressure = 0.0f;
+    Eigen::Matrix<float, 3, 1> pressureForce;
+    float viscosity = 0.5f;
+    Eigen::Matrix<float, 3, 1> viscosityForce;
+    float restitution = 5.0f;
+    float mass;
+    bool isStatic = false;
+    float soundSpeed = 100.0f;
+
+    std::unordered_map<int, float> neighbors;
+};
+
+struct planetConfig {
+    Eigen::Vector3f center = Eigen::Vector3f(0,0,0);
+    float radius = 1024.0f;
+    Eigen::Vector3f color = Eigen::Vector3f(0, 1, 0);
+    
+    float voxelSize = 10.0f;
+    int surfacePoints = 50000;
+    
+    int currentStep = 0;
+    
+    float displacementStrength = 200.0f;
+    std::vector<Particle> surfaceNodes;
+    float noiseStrength = 1.0f;
+    int numPlates = 15;
+    float plateRandom = 0.6f;
+    int smoothingPasses = 3;
+    float mountHeight = 250.0f;
+    float valleyDepth = -150.0f;
+    float transformRough = 80.0f;
+    int stressPasses = 5;
+    float maxElevationRatio = 0.25f;
+    float gridSizeCube = 16384;
+    float SMOOTHING_RADIUS = 1024.0f;
+    float REST_DENSITY = 0.00005f;
+    float TIMESTEP = 0.016f;
+    float G_ATTRACTION = 50.0f;
+    float gravitySoftening = 10.0f;
+    float pressureStiffness = 50000.0f;
+    float coreRepulsionRadius = 1000.0f; 
+    float coreRepulsionStiffness = 100000.0f;
+    float dampingFactor = 0.98f;
+};
+
+struct PlateConfig {
+    int plateId;
+    Eigen::Vector3f plateEulerPole;
+    Eigen::Vector3f direction;
+    float angularVelocity;
+    float thickness;
+    float density;
+    float rigidity;
+    float temperature;
+    Eigen::Vector3f debugColor;
+    PlateType ptype;
+};
+
+class planetsim {
+public:
+    planetConfig config;
+    Octree<Particle> grid;
+    std::vector<PlateConfig> plates;
+    std::mt19937 rng = std::mt19937(42);
+
+    planetsim() {
+        config = planetConfig();
+        grid = Octree<Particle>({-config.gridSizeCube,-config.gridSizeCube,-config.gridSizeCube,},{config.gridSizeCube,config.gridSizeCube,config.gridSizeCube});
+    }
+
+    float evaluate2DStack(const Eigen::Vector2f& point, const NoisePreviewState& state, PNoise2& gen) {
+        float finalValue = 0.0f;
+        Eigen::Vector2f p = point;
+
+        for (const auto& layer : state.layers) {
+            if (!layer.enabled) continue;
+
+            Eigen::Vector2f samplePoint = p * layer.scale;
+            
+            samplePoint += Eigen::Vector2f((float)layer.seedOffset * 10.5f, (float)layer.seedOffset * -10.5f);
+
+            if (layer.blend == BlendMode::DomainWarp) {
+                if (layer.type == NoiseType::CurlNoise) {
+                        Eigen::Vector2f flow = gen.curlNoise(samplePoint);
+                        p += flow * layer.strength * 100.0f; 
+                } else {
+                    float warpX = sampleNoiseLayer(gen, layer.type, samplePoint, layer);
+                    float warpY = sampleNoiseLayer(gen, layer.type, samplePoint + Eigen::Vector2f(5.2f, 1.3f), layer);
+                    p += Eigen::Vector2f(warpX, warpY) * layer.strength * 100.0f;
+                }
+                continue; 
+            }
+
+            float nVal = sampleNoiseLayer(gen, layer.type, samplePoint, layer);
+            
+            switch (layer.blend) {
+                case BlendMode::Replace:   finalValue = nVal * layer.strength; break;
+                case BlendMode::Add:       finalValue += nVal * layer.strength; break;
+                case BlendMode::Subtract:  finalValue -= nVal * layer.strength; break;
+                case BlendMode::Multiply:  finalValue *= (nVal * layer.strength); break;
+                case BlendMode::Max:       finalValue = std::max(finalValue, nVal * layer.strength); break;
+                case BlendMode::Min:       finalValue = std::min(finalValue, nVal * layer.strength); break;
+            }
+        }
+        
+        float norm = std::tanh(finalValue);
+        return norm;
+    }
+
+    void generateFibSphere() {
+        TIME_FUNCTION;
+        grid.clear();
+        config.surfaceNodes.clear();
+        for (int i = 0; i < config.surfacePoints; i++) {
+            float y = 1.0f - (i * 2.0f) / (config.surfacePoints - 1);
+            float radiusY = std::sqrt(1.0f- y * y);
+            float Θ = Φ * i;
+            float x = std::cos(Θ) * radiusY;
+            float z = std::sin(Θ) * radiusY;
+
+            v3 dir(x, y, z);
+            v3 pos = config.center + dir * config.radius;
+            Particle pt;
+            pt.basePos = pos;
+            pt.currentPos = pos;
+            pt.originColor = config.color;
+            pt.noiseDisplacement = 0.0f;
+            pt.surface = true;
+            config.surfaceNodes.emplace_back(pt);
+            grid.set(pt, pt.currentPos, true, pt.originColor, config.voxelSize, true, 1, 0, false, 0.0f, 0.0f, 0.0f);
+        }
+        config.currentStep = 1;
+        std::cout << "Step 1 done. base sphere generated" << std::endl;
+        buildAdjacencyList();
+        grid.save("output/fibSphere");
+    }
+
+    inline void _applyNoise(std::function<float(const Eigen::Vector3f&)> noiseFunc) {
+        for (auto& p : config.surfaceNodes) {
+            Eigen::Vector3f oldPos = p.currentPos;
+            float displacementValue = noiseFunc(p.basePos);
+            p.noiseDisplacement = displacementValue;
+            Eigen::Vector3f normal = p.basePos.normalized();
+            p.currentPos = p.basePos + (normal * displacementValue * config.displacementStrength);
+
+            grid.update(oldPos, p.currentPos, p, true, p.originColor, config.voxelSize, true, -2, false, 0.0f, 0.0f, 0.0f);
+        }
+    }
+
+    void assignSeeds() {
+        plates.clear();
+        plates.resize(config.numPlates);
+        float sphereSurfaceArea = 4.0f * M_PI * config.radius * config.radius;
+        float averageAreaPerPlate = sphereSurfaceArea / config.numPlates;
+        float minDistance = std::sqrt(averageAreaPerPlate) * 0.4f;
+        std::vector<int> selectedSeedIndices;
+        std::uniform_int_distribution<int> distNode(0, config.surfaceNodes.size() - 1);
+        for (int i = 0; i < config.numPlates; ++i) {
+            int attempts = 1000;
+            bool foundValidSeed = false;
+            int seedid = distNode(rng);
+            plates[i].plateId = i;
+
+            
+            while (!foundValidSeed && attempts > 0) {
+                int seedIndex = distNode(rng);
+                
+                bool tooClose = false;
+                for (int selectedIndex : selectedSeedIndices) {
+                    const auto& existingSeed = config.surfaceNodes[selectedIndex];
+                    const auto& candidateSeed = config.surfaceNodes[seedIndex];
+                    
+                    float dot = existingSeed.basePos.normalized().dot(candidateSeed.basePos.normalized());
+                    float angle = std::acos(std::clamp(dot, -1.0f, 1.0f));
+                    float distanceOnSphere = angle * config.radius;
+                    
+                    if (distanceOnSphere < minDistance) {
+                        tooClose = true;
+                        break;
+                    }
+                }
+                
+                if (!tooClose || selectedSeedIndices.empty()) {
+                    selectedSeedIndices.push_back(seedIndex);
+                    plates[i].plateId = i;
+                    config.surfaceNodes[seedIndex].plateID = i; 
+                    float colorVal = static_cast<float>(seedid) / config.surfaceNodes.size();
+                    plates[i].debugColor = v3(colorVal,colorVal,colorVal);
+                    foundValidSeed = true;
+                }
+                
+                attempts--;
+            }
+            if (!foundValidSeed) {
+                int seedIndex = distNode(rng);
+                selectedSeedIndices.push_back(seedIndex);
+                plates[i].plateId = i;
+                float colorVal = static_cast<float>(seedIndex) / config.surfaceNodes.size();
+                plates[i].debugColor = v3(colorVal,colorVal,colorVal);
+                config.surfaceNodes[seedIndex].plateID = i; 
+            }
+        }
+        
+    }
+
+
+    void buildAdjacencyList() {
+        TIME_FUNCTION;
+        for (int i = 0; i < config.surfaceNodes.size(); i++) {
+            Particle in = config.surfaceNodes[i];
+            v3 inn = in.basePos.normalized();
+            for (int j = 1; j < config.surfaceNodes.size(); j++) {
+                if (i == j) {
+                    continue;
+                }
+                auto ij = config.surfaceNodes[j];
+                if (ij.neighbors.contains(i)){
+                    in.neighbors[j] = ij.neighbors[i];
+                }
+
+                v3 ijn = ij.basePos.normalized();
+                float cosangle = inn.dot(ijn);
+                float angle = std::acos(cosangle);
+                
+                in.neighbors[j] = angle;
+            }
+        }
+    }
+
+    void growPlatesRandom() {
+        TIME_FUNCTION;
+    }
+
+    void growPlatesCellular() {
+        TIME_FUNCTION;
+
+    }
+
+    void fixBoundaries() {
+        TIME_FUNCTION;
+    }
+
+    void extraplateste() {
+
+    }
+
+    void boundaryStress() {
+        TIME_FUNCTION;
+
+    }
+
+    void finalizeApplyResults() {
+        TIME_FUNCTION;
+        float maxAllowedDisp = config.radius * config.maxElevationRatio;
+
+        for (auto& p : config.surfaceNodes) {
+            Eigen::Vector3f oldPos = p.currentPos;
+            grid.update(oldPos, p.currentPos, p, true, plates[p.plateID].debugColor, config.voxelSize, true, -2, false, 0.0f, 0.0f, 0.0f);
+        }
+        std::cout << "Finalize apply results completed." << std::endl;
+    }
+
+};
+
+#endif