1 files changed, 14 insertions, 0 deletions
diff --git a/src/platform/vulkan/vulkan_renderer.h b/src/platform/vulkan/vulkan_renderer.h
index e6920c5..a760cb4 100644
--- a/src/platform/vulkan/vulkan_renderer.h
+++ b/src/platform/vulkan/vulkan_renderer.h
@@ -3,6 +3,7 @@
 #include <glm/glm.hpp>
 #include <functional>
 #include <string>
+#include <vector>
 
 // Live-window Vulkan backend: owns the instance, surface, device, swapchain,
 // render pass, framebuffers and per-frame synchronization, and drives the
@@ -15,6 +16,14 @@ namespace Donut
     // macOS/Homebrew) and configures the MoltenVK ICD / layer paths.
     auto vulkan_prepare_glfw() -> void;
 
+    // A placeable/editable sphere in the world-builder scene view.
+    struct SceneObject
+    {
+        glm::vec3 position = { 0.0f, 2.0f, 0.0f };
+        float     radius   = 2.0f;
+        glm::vec3 color    = { 0.85f, 0.35f, 0.2f };
+    };
+
     class VulkanRenderer
     {
     public:
@@ -52,6 +61,11 @@ namespace Donut
         auto set_scene_mode(bool enabled) -> void;
         auto is_scene_mode() const -> bool;
 
+        // Runtime scene objects (spheres) drawn in scene view; the UI mutates this
+        // list directly. set_selected_object marks one for a rim highlight (-1 = none).
+        auto scene_objects() -> std::vector<SceneObject>&;
+        auto set_selected_object(int index) -> void;
+
     private:
         struct Impl;
         Impl* m_impl = nullptr;