timelapse frame on stroke idle

src/app_events.cpp

@@ -79,6 +79,27 @@ void App::tick(float dt)
         main->tick(dt);
     if (auto* main = layout[main_id])
         main->tick(dt);
+
+    if (rec_running)
+    {
+        auto t_now = std::chrono::high_resolution_clock::now();
+        float dt = std::chrono::duration<float>(t_now - canvas->m_canvas->m_disrty_stroke_time).count();
+        if (dt > 1.f && canvas->m_canvas->m_dirty_stroke)
+        {
+            canvas->m_canvas->m_dirty_stroke = false;
+            LOG("rec tick");
+
+            Canvas::I->draw_merge(true);
+            Texture2D equirect = Canvas::I->m_layers_merge.gen_equirect({ 1024, 512 });
+            auto img = std::make_unique<Image>(equirect.get_image());
+            {
+                std::lock_guard<std::mutex> lock(rec_mutex);
+                rec_frames.emplace_back(std::move(img));
+                rec_cv.notify_all();
+            }
+            equirect.destroy();
+        }
+    }
 }
 
 void App::resize(float w, float h)