implement alpha 1

src/RayTracer.cc

@@ -1,5 +1,33 @@
 #include "RayTracer.h"
+#include "../external/simpleppm.h"
 
-RayTracer::RayTracer(nlohmann::json scene) {}
+#include <iostream>
+#include <string>
+#include <vector>
 
-void RayTracer::run() {}
+RayTracer::RayTracer(nlohmann::json scene) : scene(scene) {}
+
+void RayTracer::run() {
+  std::string filename;
+  int sizeX = -1, sizeY = -1;
+  for (auto itr = scene["output"].begin(); itr != scene["output"].end();
+       ++itr) {
+
+    if (itr->contains("filename")) {
+      filename = (*itr)["filename"].get<std::string>();
+
+      std::cout << filename << std::endl;
+    }
+
+    if (itr->contains("size")) {
+      sizeX = (*itr)["size"].begin()->get<int>();
+      sizeY = ((*itr)["size"].begin() + 1)->get<int>();
+
+      std::cout << sizeX << " " << sizeY << std::endl;
+    }
+  }
+
+  std::vector<double> buffer(3 * sizeX * sizeY);
+
+  save_ppm(filename, buffer, sizeX, sizeY);
+}

src/RayTracer.h

@@ -7,6 +7,9 @@ class RayTracer {
 public:
   RayTracer(nlohmann::json);
   void run();
+
+private:
+  nlohmann::json scene;
 };
 
 #endif // !RAY_TRACER_H_