Math: ability to save and restore Deg and Rad from configuration.

src/Magnum/Math/Angle.h

@@ -268,4 +268,38 @@ extern template MAGNUM_EXPORT Corrade::Utility::Debug& operator<<(Corrade::Utili
 
 }}
 
+namespace Corrade { namespace Utility {
+
+/** @configurationvalue{Magnum::Math::Deg} */
+template<class T> struct ConfigurationValue<Magnum::Math::Deg<T>> {
+    ConfigurationValue() = delete;
+
+    /** @brief Writes degrees as a number */
+    static std::string toString(const Magnum::Math::Deg<T>& value, ConfigurationValueFlags flags) {
+        return ConfigurationValue<T>::toString(T(value), flags);
+    }
+
+    /** @brief Reads degrees as a number */
+    static Magnum::Math::Deg<T> fromString(const std::string& stringValue, ConfigurationValueFlags flags) {
+        return Magnum::Math::Deg<T>(ConfigurationValue<T>::fromString(stringValue, flags));
+    }
+};
+
+/** @configurationvalue{Magnum::Math::Rad} */
+template<class T> struct ConfigurationValue<Magnum::Math::Rad<T>> {
+    ConfigurationValue() = delete;
+
+    /** @brief Writes degrees as a number */
+    static std::string toString(const Magnum::Math::Rad<T>& value, ConfigurationValueFlags flags) {
+        return ConfigurationValue<T>::toString(T(value), flags);
+    }
+
+    /** @brief Reads degrees as a number */
+    static Magnum::Math::Rad<T> fromString(const std::string& stringValue, ConfigurationValueFlags flags) {
+        return Magnum::Math::Rad<T>(ConfigurationValue<T>::fromString(stringValue, flags));
+    }
+};
+
+}}
+
 #endif

src/Magnum/Math/Test/AngleTest.cpp

@@ -25,6 +25,7 @@
 
 #include <sstream>
 #include <Corrade/TestSuite/Tester.h>
+#include <Corrade/Utility/Configuration.h>
 
 #include "Magnum/Math/Angle.h"
 
@@ -40,6 +41,8 @@ struct AngleTest: Corrade::TestSuite::Tester {
 
     void debugDeg();
     void debugRad();
+    void configurationDeg();
+    void configurationRad();
 };
 
 typedef Math::Deg<Float> Deg;
@@ -56,7 +59,9 @@ AngleTest::AngleTest() {
               &AngleTest::conversion,
 
               &AngleTest::debugDeg,
-              &AngleTest::debugRad});
+              &AngleTest::debugRad,
+              &AngleTest::configurationDeg,
+              &AngleTest::configurationRad});
 }
 
 void AngleTest::construct() {
@@ -175,6 +180,28 @@ void AngleTest::debugRad() {
     CORRADE_COMPARE(o.str(), "Rad(-1.5708)\n");
 }
 
+void AngleTest::configurationDeg() {
+    Corrade::Utility::Configuration c;
+
+    Deg angle{25.3f};
+    std::string value("25.3");
+
+    c.setValue("angle", angle);
+    CORRADE_COMPARE(c.value("angle"), value);
+    CORRADE_COMPARE(c.value<Deg>("angle"), angle);
+}
+
+void AngleTest::configurationRad() {
+    Corrade::Utility::Configuration c;
+
+    Rad angle{3.14159f};
+    std::string value("3.14159");
+
+    c.setValue("angle", angle);
+    CORRADE_COMPARE(c.value("angle"), value);
+    CORRADE_COMPARE(c.value<Rad>("angle"), angle);
+}
+
 }}}
 
 CORRADE_TEST_MAIN(Magnum::Math::Test::AngleTest)