diff --git a/TODO b/TODO
index efddbf5..56fe165 100644
--- a/TODO
+++ b/TODO
@@ -3,3 +3,5 @@
 - Implement scaling and scrolling on previews.
 - Water and terrain LOD moves with the camera, fix it like in the wanderer.
 - Restore render progress.
+- Find a licence and apply it.
+- Translate UI ?
diff --git a/cli/main.c b/cli/main.c
index 4ecfbd2..261808c 100644
--- a/cli/main.c
+++ b/cli/main.c
@@ -111,7 +111,9 @@ int main(int argc, char** argv)
         conf_daytime_start += conf_daytime_step;
     }
     
+    printf("Cleaning up ...\n");
     rendererDelete(&renderer);
+    paysagesQuit();
 
     printf("\rDone.                         \n");
 
diff --git a/gui_qt/mainwindow.cpp b/gui_qt/mainwindow.cpp
index b586e66..071f78e 100644
--- a/gui_qt/mainwindow.cpp
+++ b/gui_qt/mainwindow.cpp
@@ -24,6 +24,8 @@
 
 int main(int argc, char** argv)
 {
+    int result;
+    
     paysagesInit();
 
     QApplication app(argc, argv);
@@ -31,7 +33,10 @@ int main(int argc, char** argv)
 
     window.show();
 
-    return app.exec();
+    result = app.exec();
+    
+    paysagesQuit();
+    return result;
 }
 
 MainWindow::MainWindow(QWidget *parent) :
diff --git a/lib_paysages/array.c b/lib_paysages/array.c
index f0c3a07..1c14a66 100644
--- a/lib_paysages/array.c
+++ b/lib_paysages/array.c
@@ -9,7 +9,7 @@ void arrayCreate(Array* array, int item_size)
     array->alloc_length = 3;
     array->item_size = item_size;
     array->dirty = 1;
-    array->data = malloc((size_t)item_size * 3);
+    array->data = malloc((size_t)item_size * array->alloc_length);
 }
 
 void arrayDelete(Array* array)
diff --git a/lib_paysages/atmosphere.c b/lib_paysages/atmosphere.c
index c160201..6d9ee0b 100644
--- a/lib_paysages/atmosphere.c
+++ b/lib_paysages/atmosphere.c
@@ -10,6 +10,10 @@ void atmosphereInit()
 {
 }
 
+void atmosphereQuit()
+{
+}
+
 void atmosphereSave(FILE* f, AtmosphereDefinition* definition)
 {
     toolsSaveDouble(f, &definition->distance_near);
diff --git a/lib_paysages/atmosphere.h b/lib_paysages/atmosphere.h
index 946a800..a7541ef 100644
--- a/lib_paysages/atmosphere.h
+++ b/lib_paysages/atmosphere.h
@@ -19,6 +19,7 @@ typedef struct
 } AtmosphereDefinition;
 
 void atmosphereInit();
+void atmosphereQuit();
 void atmosphereSave(FILE* f, AtmosphereDefinition* definition);
 void atmosphereLoad(FILE* f, AtmosphereDefinition* definition);
 
diff --git a/lib_paysages/auto.c b/lib_paysages/auto.c
index d7f1595..1a2a175 100644
--- a/lib_paysages/auto.c
+++ b/lib_paysages/auto.c
@@ -62,7 +62,6 @@ void autoGenRealisticLandscape(int seed)
     TerrainDefinition terrain;
     WaterDefinition water;
     CloudsDefinition clouds;
-    CloudsLayerDefinition* cloud;
     SkyDefinition sky;
     TexturesDefinition textures;
     TextureLayerDefinition* texture;
@@ -78,7 +77,7 @@ void autoGenRealisticLandscape(int seed)
 
     /* Cloud layer */
     clouds = cloudsCreateDefinition();
-    cloud = cloudsGetLayer(&clouds, cloudsAddLayer(&clouds));
+    cloudsAddLayer(&clouds);
     scenerySetClouds(&clouds);
     cloudsDeleteDefinition(&clouds);
 
@@ -163,6 +162,7 @@ void autoGenRealisticLandscape(int seed)
     zoneIncludeCircleArea(zone, 0.8, 0.0, 0.0, 0.3, 4.0);
     modifierActionFixValue(mod, -8.0);
     terrainAddModifier(&terrain, mod);
+    modifierDelete(mod);
     /* DEBUG */
     scenerySetTerrain(&terrain);
     terrainDeleteDefinition(&terrain);
diff --git a/lib_paysages/camera.c b/lib_paysages/camera.c
index 8bb3cb8..9df71aa 100644
--- a/lib_paysages/camera.c
+++ b/lib_paysages/camera.c
@@ -13,6 +13,10 @@ void cameraInit()
 {
 }
 
+void cameraQuit()
+{
+}
+
 void cameraSave(FILE* f, CameraDefinition* camera)
 {
     v3Save(f, &camera->location);
diff --git a/lib_paysages/camera.h b/lib_paysages/camera.h
index af14607..fb25775 100644
--- a/lib_paysages/camera.h
+++ b/lib_paysages/camera.h
@@ -10,6 +10,7 @@ extern "C" {
 #endif
 
 void cameraInit();
+void cameraQuit();
 void cameraSave(FILE* f, CameraDefinition* camera);
 void cameraLoad(FILE* f, CameraDefinition* camera);
 
diff --git a/lib_paysages/clouds.c b/lib_paysages/clouds.c
index 406fb31..021a242 100644
--- a/lib_paysages/clouds.c
+++ b/lib_paysages/clouds.c
@@ -27,6 +27,11 @@ void cloudsInit()
     cloudsLayerValidateDefinition(&NULL_LAYER);
 }
 
+void cloudsQuit()
+{
+    cloudsLayerDeleteDefinition(&NULL_LAYER);
+}
+
 void cloudsSave(FILE* f, CloudsDefinition* definition)
 {
     int i;
@@ -476,10 +481,10 @@ static Color _applyLayerLighting(CloudsLayerDefinition* definition, Renderer* re
 {
     Vector3 normal;
 
-    normal = v3Scale(_getNormal(definition, position, 1.0), 0.25);
+    normal = v3Scale(_getNormal(definition, position, 3.0), 0.25);
+    normal = v3Add(normal, v3Scale(_getNormal(definition, position, 2.0), 0.25));
+    normal = v3Add(normal, v3Scale(_getNormal(definition, position, 1.0), 0.25));
     normal = v3Add(normal, v3Scale(_getNormal(definition, position, 0.5), 0.25));
-    normal = v3Add(normal, v3Scale(_getNormal(definition, position, 0.2), 0.25));
-    normal = v3Add(normal, v3Scale(_getNormal(definition, position, 0.1), 0.25));
     normal = v3Scale(v3Normalize(normal), 0.1);
 
     return renderer->applyLightingToSurface(renderer, position, normal, definition->material);
diff --git a/lib_paysages/clouds.h b/lib_paysages/clouds.h
index f8ed0dd..69faf75 100644
--- a/lib_paysages/clouds.h
+++ b/lib_paysages/clouds.h
@@ -38,6 +38,7 @@ typedef struct
 } CloudsDefinition;
 
 void cloudsInit();
+void cloudsQuit();
 void cloudsSave(FILE* f, CloudsDefinition* definition);
 void cloudsLoad(FILE* f, CloudsDefinition* definition);
 
diff --git a/lib_paysages/lighting.c b/lib_paysages/lighting.c
index 8890609..37f273b 100644
--- a/lib_paysages/lighting.c
+++ b/lib_paysages/lighting.c
@@ -30,6 +30,10 @@ void lightingInit()
     _LIGHT_NULL.amplitude = 0.0;
 }
 
+void lightingQuit()
+{
+}
+
 void lightingSave(FILE* f, LightingDefinition* definition)
 {
     int i;
diff --git a/lib_paysages/lighting.h b/lib_paysages/lighting.h
index f973fec..47c8604 100644
--- a/lib_paysages/lighting.h
+++ b/lib_paysages/lighting.h
@@ -31,6 +31,7 @@ typedef struct
 } LightingDefinition;
 
 void lightingInit();
+void lightingQuit();
 void lightingSave(FILE* f, LightingDefinition* definition);
 void lightingLoad(FILE* f, LightingDefinition* definition);
 
diff --git a/lib_paysages/main.c b/lib_paysages/main.c
index 53620a9..b853964 100644
--- a/lib_paysages/main.c
+++ b/lib_paysages/main.c
@@ -47,6 +47,12 @@ void paysagesInit()
     cameraSetTarget(x - 1.0, height, 0.0);*/
 }
 
+void paysagesQuit()
+{
+    sceneryQuit();
+    renderQuit();
+}
+
 void paysagesSave(char* filepath)
 {
     scenerySaveToFile(filepath);
diff --git a/lib_paysages/main.h b/lib_paysages/main.h
index 96188ec..efef7db 100644
--- a/lib_paysages/main.h
+++ b/lib_paysages/main.h
@@ -6,6 +6,7 @@ extern "C" {
 #endif
 
 void paysagesInit();
+void paysagesQuit();
 void paysagesSave(char* filepath);
 void paysagesLoad(char* filepath);
 
diff --git a/lib_paysages/render.c b/lib_paysages/render.c
index d196258..5aa174b 100644
--- a/lib_paysages/render.c
+++ b/lib_paysages/render.c
@@ -44,6 +44,10 @@ void renderInit()
 {
 }
 
+void renderQuit()
+{
+}
+
 RenderArea* renderCreateArea()
 {
     RenderArea* result;
@@ -74,8 +78,19 @@ RenderArea* renderCreateArea()
 
 void renderDeleteArea(RenderArea* area)
 {
+    int x;
+    int y;
+
+    for (x = 0; x < area->width; x++)
+    {
+        for (y = 0; y < area->height; y++)
+        {
+            arrayDelete(area->pixels + (y * area->width + x));
+        }
+    }
+    
     mutexDestroy(area->lock);
-    arrayDelete(area->pixels);
+    free(area->pixels);
     free(area->scanline_up);
     free(area->scanline_down);
     free(area);
diff --git a/lib_paysages/render.h b/lib_paysages/render.h
index f55c811..9a566b5 100644
--- a/lib_paysages/render.h
+++ b/lib_paysages/render.h
@@ -10,6 +10,8 @@ extern "C" {
 #endif
 
 void renderInit();
+void renderQuit();
+
 RenderArea* renderCreateArea();
 void renderDeleteArea(RenderArea* area);
 
diff --git a/lib_paysages/scenery.c b/lib_paysages/scenery.c
index a01d5d9..bb7e379 100644
--- a/lib_paysages/scenery.c
+++ b/lib_paysages/scenery.c
@@ -36,6 +36,27 @@ void sceneryInit()
     _water = waterCreateDefinition();
 }
 
+void sceneryQuit()
+{
+    atmosphereDeleteDefinition(&_atmosphere);
+    cameraDeleteDefinition(&_camera);
+    cloudsDeleteDefinition(&_clouds);
+    lightingDeleteDefinition(&_lighting);
+    skyDeleteDefinition(&_sky);
+    terrainDeleteDefinition(&_terrain);
+    texturesDeleteDefinition(&_textures);
+    waterDeleteDefinition(&_water);
+
+    atmosphereQuit();
+    cameraQuit();
+    cloudsQuit();
+    lightingQuit();
+    skyQuit();
+    terrainQuit();
+    texturesQuit();
+    waterQuit();
+}
+
 void scenerySaveToFile(char* filepath)
 {
     FILE* f = fopen(filepath, "wb");
diff --git a/lib_paysages/scenery.h b/lib_paysages/scenery.h
index 6b8791e..de731cb 100644
--- a/lib_paysages/scenery.h
+++ b/lib_paysages/scenery.h
@@ -24,6 +24,8 @@ extern "C" {
 #endif
 
 void sceneryInit();
+void sceneryQuit();
+
 void scenerySaveToFile(char* filepath);
 void sceneryLoadFromFile(char* filepath);
 
diff --git a/lib_paysages/sky.c b/lib_paysages/sky.c
index f8ae1a3..926f822 100644
--- a/lib_paysages/sky.c
+++ b/lib_paysages/sky.c
@@ -18,6 +18,10 @@ void skyInit()
 {
 }
 
+void skyQuit()
+{
+}
+
 void skySave(FILE* f, SkyDefinition* definition)
 {
     toolsSaveDouble(f, &definition->daytime);
diff --git a/lib_paysages/sky.h b/lib_paysages/sky.h
index 461b89e..d88a2d5 100644
--- a/lib_paysages/sky.h
+++ b/lib_paysages/sky.h
@@ -22,6 +22,7 @@ typedef struct
 } SkyDefinition;
 
 void skyInit();
+void skyQuit();
 void skySave(FILE* f, SkyDefinition* definition);
 void skyLoad(FILE* f, SkyDefinition* definition);
 
diff --git a/lib_paysages/terrain.c b/lib_paysages/terrain.c
index 9290ae7..e14865a 100644
--- a/lib_paysages/terrain.c
+++ b/lib_paysages/terrain.c
@@ -17,6 +17,10 @@ void terrainInit()
 {
 }
 
+void terrainQuit()
+{
+}
+
 void terrainSave(FILE* f, TerrainDefinition* definition)
 {
     int i;
diff --git a/lib_paysages/terrain.h b/lib_paysages/terrain.h
index c903164..123df98 100644
--- a/lib_paysages/terrain.h
+++ b/lib_paysages/terrain.h
@@ -25,6 +25,7 @@ typedef struct
 } TerrainDefinition;
 
 void terrainInit();
+void terrainQuit();
 void terrainSave(FILE* f, TerrainDefinition* definition);
 void terrainLoad(FILE* f, TerrainDefinition* definition);
 
diff --git a/lib_paysages/textures.c b/lib_paysages/textures.c
index ec45083..4f10238 100644
--- a/lib_paysages/textures.c
+++ b/lib_paysages/textures.c
@@ -20,6 +20,11 @@ void texturesInit()
     _NULL_LAYER = texturesLayerCreateDefinition();
 }
 
+void texturesQuit()
+{
+    texturesLayerDeleteDefinition(&_NULL_LAYER);
+}
+
 void texturesSave(FILE* f, TexturesDefinition* definition)
 {
     int i;
diff --git a/lib_paysages/textures.h b/lib_paysages/textures.h
index f01debc..e3b29dc 100644
--- a/lib_paysages/textures.h
+++ b/lib_paysages/textures.h
@@ -26,6 +26,7 @@ typedef struct
 } TexturesDefinition;
 
 void texturesInit();
+void texturesQuit();
 void texturesSave(FILE* f, TexturesDefinition* definition);
 void texturesLoad(FILE* f, TexturesDefinition* definition);
 
diff --git a/lib_paysages/water.c b/lib_paysages/water.c
index 6b77600..edff3b0 100644
--- a/lib_paysages/water.c
+++ b/lib_paysages/water.c
@@ -15,6 +15,10 @@ void waterInit()
 {
 }
 
+void waterQuit()
+{
+}
+
 void waterSave(FILE* f, WaterDefinition* definition)
 {
     toolsSaveDouble(f, &definition->height);
diff --git a/lib_paysages/water.h b/lib_paysages/water.h
index afcfb79..5a5ccdf 100644
--- a/lib_paysages/water.h
+++ b/lib_paysages/water.h
@@ -35,6 +35,7 @@ typedef struct
 } WaterResult;
 
 void waterInit();
+void waterQuit();
 void waterSave(FILE* f, WaterDefinition* definition);
 void waterLoad(FILE* f, WaterDefinition* definition);