fixes

interfaces/Crafter.Graphics-Animation.cppm

@@ -27,6 +27,19 @@ namespace Crafter {
         return a + static_cast<T>(elapsed * (b - a));
     }
 
+    // Template specialization for std::string
+    template <>
+    std::string Lerp<std::string>(std::string a, std::string b, double elapsed) {
+        // Clamp elapsed to [0, 1]
+        if (elapsed < 0.0) elapsed = 0.0;
+        if (elapsed > 1.0) elapsed = 1.0;
+
+        // Number of characters from b to reveal
+        std::size_t len = static_cast<std::size_t>(std::floor(b.size() * elapsed));
+
+        return a + b.substr(0, len);
+    }
+
     template <typename Tuple, std::size_t... Is>
     constexpr auto LerpTupleImpl(const Tuple& a, const Tuple& b, double elapsed, std::index_sequence<Is...>) {
         return std::make_tuple(Lerp(std::get<Is>(a), std::get<Is>(b), elapsed)...);