Add sliders for channels 1,2,3

main.cpp

@@ -7,6 +7,7 @@
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl3.h"
+#include <atomic>
 
 // Forward declarations
 void generateRandomColors(unsigned char& r, unsigned char& g, unsigned char& b);
@@ -23,6 +24,15 @@ GLFWwindow* initOpenGL();
 
 // Serial port handle
 HANDLE hSerial;
+std::atomic<bool> running(true);
+
+void dmxThreadFunc() {
+    while (running) {
+        // Send DMX data with a refresh rate of 25ms
+        sendDMXData(hSerial, buffer, num_channels);
+        std::this_thread::sleep_for(std::chrono::milliseconds(25));
+    }
+}
 
 int main() {
     // Open the serial port
@@ -76,6 +86,9 @@ int main() {
     // Setup ImGui
     setupImGui(window);
 
+    // Start the DMX thread
+    std::thread dmxThread(dmxThreadFunc);
+
     // Main loop
     while (!glfwWindowShouldClose(window)) {
         // Poll events
@@ -89,9 +102,6 @@ int main() {
         // Render ImGui components
         renderImGui();
 
-        // Update DMX data with values from sliders
-        sendDMXData(hSerial, buffer, num_channels);
-
         // Rendering
         ImGui::Render();
         int display_w, display_h;
@@ -103,11 +113,12 @@ int main() {
 
         // Swap buffers
         glfwSwapBuffers(window);
-
-        // Simulate DMX refresh rate
-        std::this_thread::sleep_for(std::chrono::milliseconds(25));
     }
 
+    // Stop the DMX thread
+    running = false;
+    dmxThread.join();
+
     // Cleanup
     ImGui_ImplOpenGL3_Shutdown();
     ImGui_ImplGlfw_Shutdown();
@@ -184,13 +195,23 @@ void setupImGui(GLFWwindow* window) {
 }
 
 void renderImGui() {
+    // Temporary variables to hold the slider values
+    int channel1 = buffer[0];
+    int channel2 = buffer[1];
+    int channel3 = buffer[2];
+
     // Create a window
     ImGui::Begin("DMX Controller");
 
     // Create sliders for the first three DMX channels
-    ImGui::SliderInt("Channel 1", (int*)&buffer[0], 0, 255);
-    ImGui::SliderInt("Channel 2", (int*)&buffer[1], 0, 255);
-    ImGui::SliderInt("Channel 3", (int*)&buffer[2], 0, 255);
+    ImGui::SliderInt("Channel 1", &channel1, 0, 255);
+    ImGui::SliderInt("Channel 2", &channel2, 0, 255);
+    ImGui::SliderInt("Channel 3", &channel3, 0, 255);
+
+    // Assign the slider values back to the DMX buffer
+    buffer[0] = static_cast<unsigned char>(channel1);
+    buffer[1] = static_cast<unsigned char>(channel2);
+    buffer[2] = static_cast<unsigned char>(channel3);
 
     ImGui::End();
 }