Index: normal.h
===================================================================
--- normal.h	(revision 0)
+++ normal.h	(revision 1)
@@ -0,0 +1,40 @@
+#ifndef _NORMAL_H
+#define _NORMAL_H
+
+/*=
+Normals
+1600
+**/
+
+// Introduction
+/**
+This file provides some usefull functions for normal generation and smoothing.
+You can find some more informations about normals at the top of this guide. 
+**/
+
+
+extern void raydium_normal_generate_lastest_triangle (int default_visu);
+/**
+Generate normal for the last created triangle (see ##raydium_vertex_index##)
+if ##default_visu## is true ( != 0 ), this function will restore "visu" 
+normals too.
+**/
+
+extern void raydium_normal_restore_all (void);
+/**
+This function restore visu normals with standard ones (##raydium_vertex_normal_*##)
+**/
+
+extern void raydium_normal_regenerate_all (void);
+/**
+This function will regenerate standard and visu normals for the whole 
+scene (ground, objects, ...).
+**/
+
+extern void raydium_normal_smooth_all (void);
+/**
+This function will smooth the whole scene, using adjacent vertices.
+Note this function can take a lot of time.
+**/
+
+#endif