Chapter 6: Antialiasing

code/target_list.h

@@ -0,0 +1,33 @@
+#ifndef TARGETLIST_H
+#define TARGETLIST_H
+
+#include "target.h"
+
+class target_list: public target
+{
+public:
+    target_list() {}
+    target_list(target **l, int n) { list = l; list_size = n; }
+    virtual bool hit(const ray &r, float t_min, float t_max, hit_record &rec) const;
+    target **list;
+    int list_size;
+};
+
+bool target_list::hit(const ray &r, float t_min, float t_max, hit_record &rec) const
+{
+    hit_record temp_rec;
+    bool hit_anything = false;
+    double closest_so_far = t_max;
+    for (int i = 0; i < list_size; i++)
+    {
+        if (list[i]->hit(r, t_min, closest_so_far, temp_rec))
+        {
+            hit_anything = true;
+            closest_so_far = temp_rec.t;
+            rec = temp_rec;
+        }
+    }
+    return hit_anything;
+}
+
+#endif