Added Landmark class (from RCR)

CMakeLists.txt

@@ -46,6 +46,7 @@ set(CEREAL_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/3rdparty/cereal-1.1.1/include")
 
 # Header files:
 set(HEADERS
+	include/eos/core/Landmark.hpp
 	include/eos/core/LandmarkMapper.hpp
 	include/eos/morphablemodel/PcaModel.hpp
 	include/eos/morphablemodel/MorphableModel.hpp

include/eos/core/Landmark.hpp

+/*
+ * Eos - A 3D Morphable Model fitting library written in modern C++11/14.
+ *
+ * File: include/eos/core/Landmark.hpp
+ *
+ * Copyright 2014, 2015 Patrik Huber
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#ifndef LANDMARK_HPP_
+#define LANDMARK_HPP_
+
+#include <string>
+#include <vector>
+
+namespace eos {
+	namespace core {
+
+/**
+ * Representation of a landmark, consisting of a landmark name and
+ * coordinates of the given type. Usually, the type would be cv::Vec2f.
+ */
+template<class LandmarkType>
+struct Landmark
+{
+	std::string name;
+	LandmarkType coordinates;
+};
+
+/**
+ * A trivial collection of landmarks that somehow belong together.
+ */
+template<class LandmarkType> using LandmarkCollection = std::vector<Landmark<LandmarkType>>;
+
+/**
+ * Filters the given LandmarkCollection and returns a new LandmarkCollection
+ * containing all landmarks whose name matches the one given by \p filter.
+ *
+ * @param[in] landmarks The input LandmarkCollection to be filtered.
+ * @param[in] filter A landmark name (identifier) by which the given LandmarkCollection is filtered.
+ * @return A new, filtered LandmarkCollection.
+ */
+template<class T>
+LandmarkCollection<T> filter(const LandmarkCollection<T>& landmarks, const std::vector<std::string>& filter)
+{
+	LandmarkCollection<T> filtered_landmarks;
+	using std::begin;
+	using std::end;
+	std::copy_if(begin(landmarks), end(landmarks), std::back_inserter(filtered_landmarks),
+		[&](const Landmark<T>& lm) { return std::find(begin(filter), end(filter), lm.name) != end(filter); }
+	);
+	return filtered_landmarks;
+};
+
+	} /* namespace core */
+} /* namespace eos */
+
+#endif /* LANDMARK_HPP_ */