Standardize our use of begin/end iterators

books/RayTracingTheNextWeek.html

@@ -989,7 +989,7 @@
                 left = objects[start];
                 right = objects[start+1];
             } else {
-                std::sort(objects.begin() + start, objects.begin() + end, comparator);
+                std::sort(std::begin(objects) + start, std::begin(objects) + end, comparator);
 
                 auto mid = start + object_span/2;
                 left = make_shared<bvh_node>(objects, start, mid);

books/RayTracingTheRestOfYourLife.html

@@ -957,7 +957,7 @@
         }
 
         // Sort the samples by x.
-        std::sort(samples, samples + N, compare_by_x);
+        std::sort(std::begin(samples), std::end(samples), compare_by_x);
 
         // Find out the sample at which we have half of our area.
         double half_sum = sum / 2.0;

src/TheNextWeek/bvh.h

@@ -49,7 +49,7 @@ class bvh_node : public hittable {
             left = objects[start];
             right = objects[start+1];
         } else {
-            std::sort(objects.begin() + start, objects.begin() + end, comparator);
+            std::sort(std::begin(objects) + start, std::begin(objects) + end, comparator);
 
             auto mid = start + object_span/2;
             left = make_shared<bvh_node>(objects, start, mid);

src/TheRestOfYourLife/bvh.h

@@ -49,7 +49,7 @@ class bvh_node : public hittable {
             left = objects[start];
             right = objects[start+1];
         } else {
-            std::sort(objects.begin() + start, objects.begin() + end, comparator);
+            std::sort(std::begin(objects) + start, std::begin(objects) + end, comparator);
 
             auto mid = start + object_span/2;
             left = make_shared<bvh_node>(objects, start, mid);

src/TheRestOfYourLife/estimate_halfway.cc

@@ -46,7 +46,7 @@ int main() {
     }
 
     // Sort the samples by x.
-    std::sort(samples, samples + N, compare_by_x);
+    std::sort(std::begin(samples), std::end(samples), compare_by_x);
 
     // Find out the sample at which we have half of our area.
     double half_sum = sum / 2.0;