Fix camera culling by accounting for near cull plane in minimum distance calculation

src/renderer.cpp

@@ -27,6 +27,7 @@
 #define MIN_DISTANCE_BODY_RADIUS_MULT 2.75f
 #define MIN_DISTANCE_SPACECRAFT_DEFAULT 0.5f
 #define MIN_DISTANCE_SPACECRAFT_PARENT_RADIUS_MULT 0.1f
+#define CAMERA_NEAR_CULL_DISTANCE 0.05f
 
 // Zoom direction enumeration for improved readability
 enum ZoomDirection {
@@ -254,7 +255,9 @@ static float get_target_min_distance(RenderState* render_state, SimulationState*
         return CAMERA_MIN_DISTANCE;
     }
 
-    return target_radius * MIN_DISTANCE_BODY_RADIUS_MULT;
+    float radius_based_dist = target_radius * MIN_DISTANCE_BODY_RADIUS_MULT;
+    float cull_based_dist = target_radius + CAMERA_NEAR_CULL_DISTANCE + 0.001f;
+    return (radius_based_dist > cull_based_dist) ? radius_based_dist : cull_based_dist;
 }
 
 static void zoom_camera(RenderState* render_state, SimulationState* sim, ZoomDirection zoom_dir) {