Document code, and clean up

src/data/cube.h

@@ -1,31 +0,0 @@
-#define A -1,-1,-1,
-#define B -1,-1, 1,
-#define C -1, 1,-1,
-#define D -1, 1, 1,
-#define E  1,-1,-1,
-#define F  1,-1, 1,
-#define G  1, 1,-1,
-#define H  1, 1, 1,
-
-float d_cube[] =
-{
-	3*3*2*6,
-
-	A C E
-	G E C
-
-	E G F
-	H F G
-
-	F H B
-	D B H
-
-	B D A
-	C A D 
-
-	C D G
-	H G D
-
-	E B A
-	B E F
-};

src/data/shaders.h

@@ -62,7 +62,12 @@ const char * fs =
 	"	vec3 lightPos = vec3(0,0,-15);"
 	"	vec3 lightDir = normalize(lightPos - FragPos);"
 
-	"	float diffuse = max(dot(Normal, lightDir), 0.0);"
+/*
+	We use the absoulute value, insted of the traditional "max(...,0.0);"
+	so we can ignore the orientation of the triangles in openGL. 
+*/
+	"	float diffuse = abs(dot(Normal, lightDir)); "
+
 	"	float ambient = 0.5;"
 	"	FragColor = (ambient + diffuse)*color;"
 	"}";