Add a camera class

2 files changed, 28 insertions, 0 deletions

diff --git a/include/camera.hpp b/include/camera.hpp
new file mode 100644
index 0000000..82f7155
--- /dev/null
+++ b/include/camera.hpp
@@ -0,0 +1,21 @@
+#ifndef __CAMERA_HPP_
+#define __CAMERA_HPP_
+
+#include "rt.hpp"
+
+class camera {
+    public:
+        camera(point3 position, double aspect_ratio, double focal_length);
+
+        ray get_ray(double u, double v) const;
+
+        point3 position;
+        double focal_length;
+
+        vec3 horizontal;
+        vec3 vertical;
+
+        point3 bottom_left_pixel;
+};
+
+#endif // !__CAMERA_HPP_
diff --git a/include/rt.hpp b/include/rt.hpp
index 3c37fa1..a0c912e 100644
--- a/include/rt.hpp
+++ b/include/rt.hpp
@@ -19,10 +19,17 @@ inline double randd(double min, double max) {
     return min + randd() * (max - min);
 }
 
+inline double clamp(double x, double min, double max) {
+    if (x < min) return min;
+    if (x > max) return max;
+    return x;
+}
+
 
 #include "vec3.hpp"
 #include "ray.hpp"
 #include "color.hpp"
 #include "sphere.hpp"
+#include "camera.hpp"
 
 #endif // !__RT_HPP_