sin() and cos() function added to scene producer expressions.

diff --git a/core/producer/scene/expression_parser.cpp b/core/producer/scene/expression_parser.cpp
index ab40286c3fb62123d96a0f518764429e25df2000..68e94ff30301c323246b2cad663c7b3445e50eab 100644 (file)
--- a/core/producer/scene/expression_parser.cpp
+++ b/core/producer/scene/expression_parser.cpp
@@ -29,6 +29,7 @@
 #include <functional>
 #include <typeinfo>
 #include <cstdint>
+#include <cmath>
 
 #include <boost/any.hpp>
 
@@ -122,6 +123,28 @@ boost::any create_animate_function(const std::vector<boost::any>& params, const
        return to_animate.animated(frame_counter, duration, tw);
 }
 
+boost::any create_sin_function(const std::vector<boost::any>& params, const variable_repository& var_repo)
+{
+       if (params.size() != 1)
+               CASPAR_THROW_EXCEPTION(user_error()
+                       << msg_info(L"sin() function requires one parameters: angle"));
+
+       auto angle = require<double>(params.at(0));
+
+       return angle.transformed([](double a) { return std::sin(a); });
+}
+
+boost::any create_cos_function(const std::vector<boost::any>& params, const variable_repository& var_repo)
+{
+       if (params.size() != 1)
+               CASPAR_THROW_EXCEPTION(user_error()
+                       << msg_info(L"cos() function requires one parameters: angle"));
+
+       auto angle = require<double>(params.at(0));
+
+       return angle.transformed([](double a) { return std::cos(a); });
+}
+
 boost::any parse_function(
                const std::wstring& function_name,
                std::wstring::const_iterator& cursor,
@@ -130,7 +153,9 @@ boost::any parse_function(
 {
        static std::map<std::wstring, std::function<boost::any (const std::vector<boost::any>& params, const variable_repository& var_repo)>> FUNCTIONS
        {
-               {L"animate", create_animate_function }
+               {L"animate",    create_animate_function },
+               {L"sin",                create_sin_function },
+               {L"cos",                create_cos_function }
        };
 
        auto function = FUNCTIONS.find(function_name);