Tiny cleanup.

src/main.cc

@@ -117,6 +117,8 @@ struct Viewport {
   sg_image depth_image = {};
   int size[2] = {400, 400};
 
+  Viewport() { Resize(size[0], size[1]); }
+
   void Resize(int width, int height) {
     width = width < 1 ? 1 : width;
     height = height < 1 ? 1 : height;
@@ -191,7 +193,7 @@ struct ApplicationConfig {
   AnimationPlayerWidget animation_player_widget;
 
   struct ViewportWidget {
-    bool visible = false;
+    bool visible = true;
     int position[2] = {20, 20};
     int size[2] = {800, 500};
   };
@@ -203,7 +205,6 @@ struct ApplicationConfig {
 };
 
 void to_json(nlohmann::json& j, const ApplicationConfig& config) {
-  std::cerr << "converting to json" << std::endl;
   j["type"] = "AnimTestbedConfig";
 
   j["main_window"]["position"][0] = config.window_position[0];
@@ -247,8 +248,6 @@ void to_json(nlohmann::json& j, const ApplicationConfig& config) {
 }
 
 void from_json(const nlohmann::json& j, ApplicationConfig& config) {
-  std::cerr << "converting from json" << std::endl;
-
   if (j.contains("main_window")) {
     if (j["main_window"].contains("position")
         and j["main_window"]["position"].size() == 2) {