From b85e784d6fc7b37ada36f4a8a8a0607a41cefc4a Mon Sep 17 00:00:00 2001
From: Cristian Gora <cristian.gora@blu.it>
Date: Sun, 27 Sep 2026 21:14:33 +0200
Subject: [PATCH] Edit example UI features

---
 src/main.cpp | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 596b8e9..0881e69 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -12,6 +12,7 @@ using namespace Fan;
 
 struct UserData
 {
+    Window& window;
     Camera& camera;
     float delta_time{};
     bool mouse_grab{};
@@ -22,6 +23,7 @@ struct UserData
     float last_mouse_y{};
     bool first_mouse{true};
 
+    bool vsync{true};
     bool show_debug{};
 
     std::vector<Rc<Scene>> scenes{};
@@ -31,8 +33,8 @@ struct UserData
 void process_input(Window& window, Camera& camera, UserData& user_data);
 void mouse_callback(double pos_x, double pos_y, void* user_data);
 void setup_dockspace();
-void draw_panel_window(Camera& camera, UserData& user_data);
-void draw_viewport_window(FrameBuffer& framebuffer, Window& window, UserData& user_data);
+void draw_panel_window(UserData& user_data);
+void draw_viewport_window(FrameBuffer& framebuffer, UserData& user_data);
 std::vector<Vertex> get_cube_vertices();
 
 template <typename... Args>
@@ -62,7 +64,7 @@ int main()
     Camera camera{{5.0f, 5.0f, 5.0f}};
     camera.look_at({0.0f, 0.0f, 0.0f});
 
-    UserData user_data{camera};
+    UserData user_data{*window, camera};
     window->set_callback_user_data(&user_data);
     window->set_mouse_callback(mouse_callback);
 
@@ -176,8 +178,8 @@ int main()
 
         // UI Layer
         setup_dockspace();
-        draw_panel_window(camera, user_data);
-        draw_viewport_window(*framebuffer, *window, user_data);
+        draw_panel_window(user_data);
+        draw_viewport_window(*framebuffer, user_data);
 
         // Scene Rendering Layer
         const Scene& scene = *user_data.scenes[user_data.selected_scene_index];
@@ -273,7 +275,7 @@ void setup_dockspace()
     ImGui::DockSpaceOverViewport(dockspace_id, viewport, ImGuiDockNodeFlags_None);
 }
 
-void draw_panel_window(Camera& camera, UserData& user_data)
+void draw_panel_window(UserData& user_data)
 {
     static auto logo = Texture::create("assets/logo/logo.png");
 
@@ -286,11 +288,11 @@ void draw_panel_window(Camera& camera, UserData& user_data)
     ImGui::Separator();
 
     ImGui::Text("Press INSERT to toggle camera controls");
-    ImGui::SliderFloat("Camera X", &camera.position.x, -10.0f, 10.0f);
-    ImGui::SliderFloat("Camera Y", &camera.position.y, -10.0f, 10.0f);
-    ImGui::SliderFloat("Camera Z", &camera.position.z, -10.0f, 10.0f);
     ImGui::Separator();
 
+    if (ImGui::Checkbox("VSync", &user_data.vsync)) {
+        user_data.window.set_vsync(user_data.vsync);
+    }
     ImGui::Checkbox("Show Debug Wireframes", &user_data.show_debug);
     ImGui::Separator();
 
@@ -306,7 +308,7 @@ void draw_panel_window(Camera& camera, UserData& user_data)
     ImGui::End();
 }
 
-void draw_viewport_window(FrameBuffer& framebuffer, Window& window, UserData& user_data)
+void draw_viewport_window(FrameBuffer& framebuffer, UserData& user_data)
 {
     ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2{0.0f, 0.0f});
     ImGui::Begin("Viewport");
@@ -320,10 +322,10 @@ void draw_viewport_window(FrameBuffer& framebuffer, Window& window, UserData& us
     }
 
     // Overlays
-    float fps = window.get_delta_time() > 0.0f ? 1.0f / window.get_delta_time() : 0.0f;
+    float fps = user_data.window.get_delta_time() > 0.0f ? 1.0f / user_data.window.get_delta_time() : 0.0f;
     overlay_text(20.0f, 35.0f, {0.0f, 1.0f, 0.0f, 1.0f}, "%s", VERSION_STRING);
     overlay_text(20.0f, 52.0f, {0.0f, 1.0f, 0.0f, 1.0f}, "FPS: %.1f", fps);
-    overlay_text(20.0f, 69.0f, {0.0f, 1.0f, 0.0f, 1.0f}, "Frame time: %.2f ms", window.get_delta_time());
+    overlay_text(20.0f, 69.0f, {0.0f, 1.0f, 0.0f, 1.0f}, "Frame time: %.2f ms", user_data.window.get_delta_time());
     if (user_data.mouse_grab) { overlay_text(20.0f, 86.0f, {0.0f, 1.0f, 0.0f, 1.0f}, "%s", "INPUT LOCKED"); }
 
     ImGui::End();