修改一些

web_server/app/render_3D/Gallery_Scene3D.cpp

@@ -5,10 +5,13 @@
 #include "../common/Pixel_Frame.h"
 #include "render_3D/Render_Scene_3D.h"
 
+#include <renderive/error/Error_Policy.hpp>
+
 #include <algorithm>
 #include <chrono>
 #include <limits>
 #include <memory>
+#include <stdexcept>
 #include <string>
 #include <vector>
 
@@ -211,10 +214,14 @@ private:
         visual_ = Point_Visual::Builder(std::move(points))
             .set_object_name(case_id_ + " Points")
             .build();
-        scene_ = Render_Scene_3D::Builder(visual_, make_strategy(mode))
+        auto built_scene = Render_Scene_3D::Builder(visual_, make_strategy(mode))
             .set<&Render_Scene_3D::Properties::viewport>(extent_)
             .set<&Render_Scene_3D::Properties::visual_family>(visual_family(case_id_))
             .build();
+        if (!built_scene)
+            ::renderive::error::unexpected<std::logic_error>(
+                "gallery 3D scene topology validation failed");
+        scene_ = std::move(*built_scene);
     }
 
     std::string case_id_;