move output factors to Scene class

src/Scene.cc

@@ -0,0 +1,18 @@
+#include "Scene.h"
+
+Scene::Scene(const nlohmann::json &output) {
+  for (auto i = output.begin(); i != output.end(); ++i) {
+    if (i->contains("filename")) {
+      this->name = (*i)["filename"].get<string>();
+    }
+
+    if (i->contains("size")) {
+      this->width = (*i)["size"].at(0).get<int>();
+      this->height = (*i)["size"].at(1).get<int>();
+    }
+  }
+}
+
+string Scene::getName() { return this->name; }
+int Scene::getWidth() { return this->width; }
+int Scene::getHeight() { return this->height; }

src/Scene.h

@@ -0,0 +1,23 @@
+#ifndef SCENE_H_
+#define SCENE_H_
+
+#include "../external/json.hpp"
+
+#include <string>
+
+using std::string;
+
+class Scene {
+public:
+  Scene(const nlohmann::json &);
+  string getName();
+  int getWidth();
+  int getHeight();
+
+private:
+  string name;
+  int width;
+  int height;
+};
+
+#endif // !SCENE_H_