diff --git a/rules/chose.cpp b/rules/chose.cpp
index a5aaa94..b181f7e 100644
--- a/rules/chose.cpp
+++ b/rules/chose.cpp
@@ -120,16 +120,20 @@ void Chose::addBBPoints(const Quad q, float height) {
 }
 
 void Chose::updateAABB() {
+	float splitFactor = 5.f;
+	float mergeFactor = 6.f;
 	lod.firstBBPoint = true;
 	getBoundingBoxPoints();
-	float dx = lod.aabb[1] - lod.aabb[0];
-	float dy = lod.aabb[3] - lod.aabb[2];
-	float dz = lod.aabb[5] - lod.aabb[4];
-	// TODO pour la pseudoLength sur l'axe x, utiliser y*z, pseudolength_y = x*z, pseudolength_z = x*y.
-	float pseudoLength = std::sqrt(dx*dy + dy*dz + dx*dz);
-	float splitIncrement = 5 * pseudoLength;
-	float mergeIncrement = 6 * pseudoLength;
+	float size[3];
+	for (int i = 0; i < 3; i++)
+		size[i] = lod.aabb[2*i+1] - lod.aabb[2*i];
+	float areaFacing[3];
+	for (int i = 0; i < 3; i++)
+		areaFacing[i] = size[(i+1)%3]*size[(i+1)%3];
 	for (int i = 0; i < 3; i++) {
+		float pseudoLength = std::max(1.f, std::sqrt(areaFacing[i] + areaFacing[(i+1)%3] / 2.f + areaFacing[(i+1)%3] / 2.f));
+		float splitIncrement = std::min((float)View::backFrustum, splitFactor * pseudoLength);
+		float mergeIncrement = std::min(View::backFrustum * mergeFactor/splitFactor, mergeFactor * pseudoLength);
 		lod.splitBox[2*i] = lod.aabb[2*i] - splitIncrement;
 		lod.splitBox[2*i+1] = lod.aabb[2*i+1] + splitIncrement;
 		lod.mergeBox[2*i] = lod.aabb[2*i] - mergeIncrement;
diff --git a/view.cpp b/view.cpp
index ffe1fd1..76d74f4 100644
--- a/view.cpp
+++ b/view.cpp
@@ -24,7 +24,7 @@ void View::initWindow() {
 	SDL_SetVideoMode(windowWidth, windowHeight, 32, SDL_OPENGL);
 	glMatrixMode( GL_PROJECTION );
 	glLoadIdentity();
-	gluPerspective(70,(double)windowWidth/windowHeight,1,100000); // back frustum : 1km
+	gluPerspective(70,(double)windowWidth/windowHeight,frontFrustum,backFrustum);
 	glEnable(GL_DEPTH_TEST);
 	glewInit();
 
diff --git a/view.hh b/view.hh
index 961a593..ade5bd8 100644
--- a/view.hh
+++ b/view.hh
@@ -3,18 +3,12 @@
 
 #include "all_includes.hh"
 
-// TODO :
-// flycam : le centre ne bouge pas, la souris contrôle l'angle de vue x & y
-//          les flèches avant/arrière permettent d'avancer/reculer.
-// Calcul correct des normales dans triangle.cpp
-// Prendre en compte tous les évènements X en attente avant de relancer le rendu.
-
 class Camera {
-	public :
+public :
 	Vertex cameraCenter;
 	Vertex cameraSight;
 
-	private :
+private :
 	float xAngle;
 	float yAngle;
 	int moveSensitivity;
@@ -26,7 +20,7 @@ class Camera {
 	bool pageUp;
 	bool pageDown;
 
-	public :
+public :
 	Camera(Vertex pos, float xA, float yA, int moveSensitivity, float mouseSensitivity);
 	void setCamera();
 	void mouseMotion(const SDL_MouseMotionEvent &event);
@@ -38,19 +32,20 @@ class Camera {
 
 
 class View {
-    private :
+private :
 	Chose* root;
 
-	public :
+public :
 	Camera camera;
+	static const int frontFrustum = 1;
+	static const int backFrustum = 100000; // 1km
 private:
 	Lod lod;
 
 	static const int windowWidth = 1024;
 	static const int windowHeight = 768;
 
-
-	public :
+public :
 	View(Chose* root);
 	void initWindow();
 	void mainLoop();
@@ -59,7 +54,7 @@ private:
 
 	static void setColor(unsigned char r, unsigned char g, unsigned char b);
 
-	private :
+private :
 	void setLight();
 };