Updates in attempt to get window to start on launch in macOS. Not happening but it's a quick hack to start it with a message. Add a send.js file for node.

main.cpp

@@ -21,7 +21,7 @@ using namespace std;
 using namespace std::chrono;
 using namespace nlohmann;
 
-const int DISPLAY_DURATION = 2000;
+volatile int DISPLAY_DURATION = 2000;
 const int PORT = 8081;
 
 steady_clock::time_point startTime;
@@ -31,6 +31,11 @@ condition_variable quadCondVar;
 
 void displayQuad() {
     glClear(GL_COLOR_BUFFER_BIT);
+    glEnable(GL_TEXTURE_2D);
+    glViewport(0, 0, 500, 500);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
 
     auto currentTime = steady_clock::now();
     auto elapsedTime = duration_cast<milliseconds>(currentTime - startTime).count();
@@ -41,21 +46,19 @@ void displayQuad() {
         quadCondVar.wait(lock, [&] { return shouldDisplayQuad; });
         localShouldDisplayQuad = shouldDisplayQuad;
     }
-
     if (localShouldDisplayQuad && elapsedTime < DISPLAY_DURATION) {
         glColor3f(1.0f, 0.0f, 0.0f);
-
-        glBegin(GL_QUADS);
-        glVertex2f(-0.5f, -0.5f);
-        glVertex2f(-0.5f, 0.5f);
-        glVertex2f(0.5f, 0.5f);
-        glVertex2f(0.5f, -0.5f);
-        glEnd();
     } else {
-        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+        glColor3f(0.0f, 0.0f, 0.0f);
-        glClear(GL_COLOR_BUFFER_BIT);
     }
 
+    glBegin(GL_QUADS);
+    glVertex2f(-0.5f, -0.5f);
+    glVertex2f(-0.5f, 0.5f);
+    glVertex2f(0.5f, 0.5f);
+    glVertex2f(0.5f, -0.5f);
+    glEnd();
+
     glutSwapBuffers();
 }
 
@@ -87,6 +90,11 @@ void handleTCPConnection(int serverSocket) {
         json jsonData = json::parse(jsonString);
         cout << "Received JSON: " << jsonData << endl;
 
+        if (jsonData.contains("rgb")) {
+            DISPLAY_DURATION = jsonData["rgb"];
+            cout << "Set exposure time to " << DISPLAY_DURATION << "ms" << endl;
+        }
+
         {
             lock_guard<mutex> lock(quadMutex);
             shouldDisplayQuad = true;
@@ -115,6 +123,8 @@ int main(int argc, char** argv) {
     glutDisplayFunc(displayQuad);
     glutTimerFunc(0, timer, 0);
     
+    startTime = steady_clock::now();
+
     int serverSocket = socket(AF_INET, SOCK_STREAM, 0);
     if (serverSocket < 0) {
         cerr << "Error creating socket" << endl;

send.js

@@ -0,0 +1,27 @@
+const net = require('net');
+
+const serverAddress = 'localhost';
+const serverPort = 8081;
+
+const client = new net.Socket();
+
+console.log(`Connecting to ${serverAddress}:${serverPort}...`);
+
+client.connect(serverPort, serverAddress, () => {
+    const data = {
+        file: 'filename.tif',
+        rgb: 1000
+    };
+    const jsonData = JSON.stringify(data);
+
+    console.log(`Sending: ${jsonData}`);
+    client.write(jsonData);
+});
+
+client.on('close', () => {
+    console.log('Closing connection');
+});
+
+client.on('error', (err) => {
+    console.error('Error:', err);
+});

send.py

@@ -9,9 +9,8 @@ client_socket.connect(server_address)
 
 try:
     data = {
-        'message': 'Hello from Python',
+        'file': 'filename.tif',
-        'value': 42,
+        'rgb': 1000
-        'enabled': True
     }
 
     json_data = json.dumps(data)