implemented 9 chapters of "Ray tracing in a weekend"

Graphics/Anand_kumar/Camera.h

@@ -0,0 +1,20 @@
+#include"hitable_list.h"
+
+class camera{
+    public:
+        camera() {
+            lower_left_corner = vec3(-2.0,-1.0,-1.0);
+            horizontal = vec3(4.0 , 0.0 ,0.0);
+            vertical = vec3(0.0 , 2.0 ,0.0);
+            origin = vec3(0.0 , 0.0 ,0.0);
+        }
+        ray get_ray(float u , float v){
+            return ray(origin , lower_left_corner + u*horizontal + v*vertical);
+        }
+
+        vec3 origin;
+        vec3 vertical;
+        vec3 horizontal;
+        vec3 lower_left_corner;
+
+};

Graphics/Anand_kumar/Chapter1.cpp

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+#include"vec3.h"
+#include<fstream>
+using namespace std;
+int main(){
+    int x = 200;
+    int y = 100;
+    ofstream ostream;
+    ostream.open("Chapter1.ppm");
+    ostream << "P3\n" << x << " " << y << "\n255\n";
+    for(int j = y-1 ; j >= 0 ; j--){
+        for(int i = 0 ; i < x ; i++){
+            vec3 colors(float(i) / float(x) , float(j) / float(y) , 0.2);
+            int r = int(255.99*colors[0]);
+            int g = int(255.99*colors[1]);
+            int b = int(255.99*colors[2]);
+
+            ostream << r << " " << g << " " << b << "\n";
+        }
+    }
+    ostream.close();
+    return 0;
+}