Resolve "emplace: can it return derived class pointer?"

Closes #246 (closed)

include/core/capture/capture_base.h

@@ -107,7 +107,7 @@ class CaptureBase : public NodeBase, public std::enable_shared_from_this<Capture
         void move(FrameBasePtr);
         void link(FrameBasePtr);
         template<typename classType, typename... T>
-        static std::shared_ptr<CaptureBase> emplace(FrameBasePtr _frm_ptr, T&&... all);
+        static std::shared_ptr<classType> emplace(FrameBasePtr _frm_ptr, T&&... all);
 
     protected:
         SizeEigen computeCalibSize() const;
@@ -130,9 +130,9 @@ class CaptureBase : public NodeBase, public std::enable_shared_from_this<Capture
 namespace wolf{
 
 template<typename classType, typename... T>
-std::shared_ptr<CaptureBase> CaptureBase::emplace(FrameBasePtr _frm_ptr, T&&... all)
+std::shared_ptr<classType> CaptureBase::emplace(FrameBasePtr _frm_ptr, T&&... all)
 {
-    CaptureBasePtr cpt = std::make_shared<classType>(std::forward<T>(all)...);
+    std::shared_ptr<classType> cpt = std::make_shared<classType>(std::forward<T>(all)...);
     cpt->link(_frm_ptr);
     return cpt;
 }