Add briefs for classes in the geom namespace

src/geom/aabb.hpp

@@ -27,6 +27,9 @@
 
 namespace geom {
 
+/**
+ * Axis-aligned bounding box.
+ */
 template <class T>
 struct aabb: public bounding_volume<T>
 {

src/geom/plane.hpp

@@ -24,6 +24,9 @@
 
 namespace geom {
 
+/**
+ * A flat 2-dimensional surface.
+ */
 template <class T>
 struct plane
 {

src/geom/ray.hpp

@@ -24,6 +24,9 @@
 
 namespace geom {
 
+/**
+ * Half of a line proceeding from an initial point.
+ */
 template <class T>
 struct ray
 {

src/geom/sphere.hpp

@@ -27,6 +27,9 @@
 
 namespace geom {
 
+/**
+ * Bounding sphere.
+ */
 template <class T>
 struct sphere: public bounding_volume<T>
 {

src/geom/view-frustum.hpp

@@ -26,6 +26,9 @@
 
 namespace geom {
 
+/**
+ * View frustum.
+ */
 template <class T>
 class view_frustum
 {

src/platform/windows/nvidia.cpp

@@ -20,8 +20,8 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
-// Direct Nvidia Optimus to use high-performance graphics
 extern "C"
 {
+	// Direct Nvidia Optimus to use high-performance graphics
 	_declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
 }