Add exporting/importing

main.cpp

@@ -8,6 +8,8 @@
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl3.h"
 #include <atomic>
+#include <nlohmann/json.hpp>
+#include <fstream>
 
 
 void generateRandomColors(unsigned char& r, unsigned char& g, unsigned char& b);
@@ -144,6 +146,53 @@ void sendDMXData(HANDLE hSerial, unsigned char* data, int length) {
     WriteFile(hSerial, data, length, &bytesWritten, NULL);
 }
 
+// Function to export markers to a JSON file
+void exportMarkersToFile(const std::string& filename) {
+    nlohmann::json j;
+
+    for (const auto& marker : markers) {
+        j.push_back({
+            {"time", std::get<0>(marker)},
+            {"r", std::get<1>(marker)},
+            {"g", std::get<2>(marker)},
+            {"b", std::get<3>(marker)}
+            });
+    }
+
+    std::ofstream file(filename);
+    if (file.is_open()) {
+        file << j.dump(4); // Pretty print with indentation of 4 spaces
+        file.close();
+    }
+    else {
+        std::cerr << "Could not open file for writing: " << filename << std::endl;
+    }
+}
+
+// Function to load markers from a JSON file
+void loadMarkersFromFile(const std::string& filename) {
+    nlohmann::json j;
+    std::ifstream file(filename);
+
+    if (file.is_open()) {
+        file >> j;
+        file.close();
+
+        markers.clear();
+        for (const auto& element : j) {
+            markers.emplace_back(
+                element["time"].get<float>(),
+                element["r"].get<unsigned char>(),
+                element["g"].get<unsigned char>(),
+                element["b"].get<unsigned char>()
+            );
+        }
+    }
+    else {
+        std::cerr << "Could not open file for reading: " << filename << std::endl;
+    }
+}
+
 GLFWwindow* initOpenGL() {
     if (!glfwInit()) {
         std::cerr << "Failed to initialize GLFW" << std::endl;
@@ -193,6 +242,16 @@ void renderImGui() {
     // Create a window
     ImGui::Begin("DMX Controller");
 
+    if (ImGui::Button("Export Lightshow")) {
+        exportMarkersToFile("lightshow.json");
+    }
+
+    ImGui::SameLine();
+
+    if (ImGui::Button("Load Lightshow")) {
+        loadMarkersFromFile("lightshow.json");
+    }
+
     // Create sliders for the first three DMX channels
     ImGui::SliderInt("Channel 1", &channel1, 0, 255);
     ImGui::SliderInt("Channel 2", &channel2, 0, 255);