diff --git a/TODO b/TODO
index f400dad..32a4b3e 100644
--- a/TODO
+++ b/TODO
@@ -22,7 +22,6 @@ Technology Preview 2 :
    => Add texture shadowing.
 - Clouds should keep distance to ground.
 - Fix rendering when inside a cloud layer, with other upper or lower layers.
-- Make fileNew work again (call auto presets and randomize all noise offsets).
 - Improve cloud rendering precision (and beware of precision discontinuity when rendering clouds in front of ground (shorter distance)).
 
 Technlogy Preview 3 :
diff --git a/gui_qt/formclouds.cpp b/gui_qt/formclouds.cpp
index 558ba35..fe132d9 100644
--- a/gui_qt/formclouds.cpp
+++ b/gui_qt/formclouds.cpp
@@ -139,7 +139,7 @@ void FormClouds::layerWriteCurrentTo(void* layer_definition)
 
 void FormClouds::autoPresetSelected(int preset)
 {
-    cloudsAutoPreset(_layer, (CloudsPreset)preset);
+    cloudsLayerAutoPreset(_layer, (CloudsLayerPreset)preset);
     BaseForm::autoPresetSelected(preset);
 }
 
diff --git a/lib_paysages/auto.c b/lib_paysages/auto.c
index e3023a1..9e42109 100644
--- a/lib_paysages/auto.c
+++ b/lib_paysages/auto.c
@@ -24,11 +24,7 @@ void autoGenRealisticLandscape(int seed)
     }
     srand(seed);
 
-    /* Cloud layer */
-    CloudsDefinition* clouds = CloudsDefinitionClass.create();
-    layer = layersAddLayer(clouds->layers, NULL);
-    scenerySetClouds(clouds);
-    CloudsDefinitionClass.destroy(clouds);
+    sceneryAutoPreset();
 
     /* Water */
     water = waterCreateDefinition();
@@ -42,6 +38,7 @@ void autoGenRealisticLandscape(int seed)
     layersSetName(textures.layers, layer, "Ground");
     texture = layersGetLayer(textures.layers, layer);
     noiseClearLevels(texture->bump_noise);
+    noiseRandomizeOffsets(texture->bump_noise);
     noiseAddLevelsSimple(texture->bump_noise, 8, 1.0, -0.5, 0.5);
     texture->bump_height = 0.01;
     texture->bump_scaling = 0.045;
@@ -59,6 +56,7 @@ void autoGenRealisticLandscape(int seed)
     zoneAddHeightRangeQuick(texture->zone, 1.0, -6.0, -5.0, 3.0, 15.0);
     zoneAddSlopeRangeQuick(texture->zone, 1.0, 0.0, 0.0, 0.05, 0.4);
     noiseClearLevels(texture->bump_noise);
+    noiseRandomizeOffsets(texture->bump_noise);
     noiseAddLevelsSimple(texture->bump_noise, 5, 1.0, -0.2, 0.2);
     noiseAddLevelsSimple(texture->bump_noise, 2, 0.03, -0.04, 0.04);
     texture->bump_height = 0.002;
diff --git a/lib_paysages/clouds/definition.c b/lib_paysages/clouds/definition.c
index e78d045..43a7edd 100644
--- a/lib_paysages/clouds/definition.c
+++ b/lib_paysages/clouds/definition.c
@@ -128,7 +128,7 @@ CloudsLayerDefinition* cloudsLayerCreateDefinition()
     result->_shape_noise = noiseCreateGenerator();
     result->_edge_noise = noiseCreateGenerator();
 
-    cloudsAutoPreset(result, CLOUDS_PRESET_CIRRUS);
+    cloudsLayerAutoPreset(result, CLOUDS_LAYER_PRESET_CIRRUS);
 
     return result;
 }
diff --git a/lib_paysages/clouds/presets.c b/lib_paysages/clouds/presets.c
index 4f007d4..ed1981c 100644
--- a/lib_paysages/clouds/presets.c
+++ b/lib_paysages/clouds/presets.c
@@ -1,13 +1,31 @@
 #include "private.h"
 
 #include <math.h>
+#include <stdlib.h>
 
 /*
  * Clouds presets.
  */
 
-void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset)
+void cloudsAutoPreset(CloudsDefinition* definition, CloudsPreset preset)
 {
+    int layer;
+
+    layersClear(definition->layers);
+
+    if (preset == CLOUDS_PRESET_PARTLY_CLOUDY)
+    {
+        layer = layersAddLayer(definition->layers, NULL);
+        cloudsLayerAutoPreset(layersGetLayer(definition->layers, layer), CLOUDS_LAYER_PRESET_CIRRUS);
+    }
+}
+
+void cloudsLayerAutoPreset(CloudsLayerDefinition* definition, CloudsLayerPreset preset)
+{
+    noiseRandomizeOffsets(definition->_coverage_noise);
+    noiseRandomizeOffsets(definition->_edge_noise);
+    noiseRandomizeOffsets(definition->_shape_noise);
+
     definition->material.base.r = 0.7;
     definition->material.base.g = 0.7;
     definition->material.base.b = 0.7;
@@ -15,7 +33,7 @@ void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset)
 
     switch (preset)
     {
-        case CLOUDS_PRESET_CIRRUS:
+        case CLOUDS_LAYER_PRESET_CIRRUS:
             definition->type = CLOUDS_TYPE_CIRRUS;
             definition->lower_altitude = 25.0;
             definition->thickness = 2.0;
@@ -30,7 +48,7 @@ void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset)
             definition->edge_length = 0.8;
             definition->base_coverage = 0.6;
             break;
-        case CLOUDS_PRESET_CUMULUS:
+        case CLOUDS_LAYER_PRESET_CUMULUS:
             definition->type = CLOUDS_TYPE_CUMULUS;
             definition->lower_altitude = 15.0;
             definition->thickness = 15.0;
@@ -45,7 +63,7 @@ void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset)
             definition->edge_length = 0.0;
             definition->base_coverage = 0.7;
             break;
-        case CLOUDS_PRESET_STRATOCUMULUS:
+        case CLOUDS_LAYER_PRESET_STRATOCUMULUS:
             definition->type = CLOUDS_TYPE_STRATOCUMULUS;
             definition->lower_altitude = 5.0;
             definition->thickness = 6.0;
@@ -60,7 +78,7 @@ void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset)
             definition->edge_length = 0.3;
             definition->base_coverage = 0.4;
             break;
-        case CLOUDS_PRESET_STRATUS:
+        case CLOUDS_LAYER_PRESET_STRATUS:
             definition->type = CLOUDS_TYPE_STRATUS;
             definition->lower_altitude = 3.0;
             definition->thickness = 4.0;
diff --git a/lib_paysages/clouds/public.h b/lib_paysages/clouds/public.h
index 89660f8..9bb6016 100644
--- a/lib_paysages/clouds/public.h
+++ b/lib_paysages/clouds/public.h
@@ -22,12 +22,17 @@ typedef enum
 
 typedef enum
 {
-    CLOUDS_PRESET_CIRRUS,
-    CLOUDS_PRESET_CUMULUS,
-    CLOUDS_PRESET_STRATOCUMULUS,
-    CLOUDS_PRESET_STRATUS
+    CLOUDS_PRESET_PARTLY_CLOUDY,
 } CloudsPreset;
 
+typedef enum
+{
+    CLOUDS_LAYER_PRESET_CIRRUS,
+    CLOUDS_LAYER_PRESET_CUMULUS,
+    CLOUDS_LAYER_PRESET_STRATOCUMULUS,
+    CLOUDS_LAYER_PRESET_STRATUS
+} CloudsLayerPreset;
+
 typedef struct
 {
     CloudsType type;
@@ -79,7 +84,8 @@ extern StandardRenderer CloudsRendererClass;
 
 
 LayerType cloudsGetLayerType();
-void cloudsAutoPreset(CloudsLayerDefinition* definition, CloudsPreset preset);
+void cloudsAutoPreset(CloudsDefinition* definition, CloudsPreset preset);
+void cloudsLayerAutoPreset(CloudsLayerDefinition* definition, CloudsLayerPreset preset);
 
 Renderer* cloudsCreatePreviewCoverageRenderer();
 Color cloudsGetPreviewCoverage(Renderer* renderer, double x, double y, double scaling, int perspective);
diff --git a/lib_paysages/layers.c b/lib_paysages/layers.c
index 18d16a9..f4791fe 100644
--- a/lib_paysages/layers.c
+++ b/lib_paysages/layers.c
@@ -133,6 +133,14 @@ void layersSetName(Layers* layers, int layer, const char* name)
     }
 }
 
+void layersClear(Layers* layers)
+{
+    while (layersCount(layers))
+    {
+        layersDeleteLayer(layers, 0);
+    }
+}
+
 int layersCount(Layers* layers)
 {
     return layers->count;
diff --git a/lib_paysages/layers.h b/lib_paysages/layers.h
index 8c16965..194747c 100644
--- a/lib_paysages/layers.h
+++ b/lib_paysages/layers.h
@@ -40,6 +40,7 @@ void layersLoad(PackStream* stream, Layers* layers);
 const char* layersGetName(Layers* layers, int layer);
 void layersSetName(Layers* layers, int layer, const char* name);
 
+void layersClear(Layers* layers);
 int layersCount(Layers* layers);
 void* layersGetLayer(Layers* layers, int layer);
 int layersAddLayer(Layers* layers, void* definition);
diff --git a/lib_paysages/noise.c b/lib_paysages/noise.c
index 78aa073..9df57ad 100644
--- a/lib_paysages/noise.c
+++ b/lib_paysages/noise.c
@@ -221,9 +221,9 @@ void noiseRandomizeOffsets(NoiseGenerator* generator)
     int i;
     for (i = 0; i < MAX_LEVEL_COUNT; i++)
     {
-        result->levels[i].xoffset = toolsRandom();
-        result->levels[i].yoffset = toolsRandom();
-        result->levels[i].zoffset = toolsRandom();
+        generator->levels[i].xoffset = toolsRandom();
+        generator->levels[i].yoffset = toolsRandom();
+        generator->levels[i].zoffset = toolsRandom();
     }
 }
 
diff --git a/lib_paysages/scenery.c b/lib_paysages/scenery.c
index 9988252..430092a 100644
--- a/lib_paysages/scenery.c
+++ b/lib_paysages/scenery.c
@@ -43,6 +43,13 @@ void sceneryQuit()
     noiseQuit();
 }
 
+void sceneryAutoPreset()
+{
+    terrainAutoPreset(_terrain, TERRAIN_PRESET_STANDARD);
+    atmosphereAutoPreset(_atmosphere, ATMOSPHERE_MODEL_BRUNETON);
+    cloudsAutoPreset(_clouds, CLOUDS_PRESET_PARTLY_CLOUDY);
+}
+
 void scenerySetCustomDataCallback(SceneryCustomDataCallback callback_save, SceneryCustomDataCallback callback_load, void* data)
 {
     _custom_save = callback_save;
diff --git a/lib_paysages/scenery.h b/lib_paysages/scenery.h
index 31b2c50..e8611bc 100644
--- a/lib_paysages/scenery.h
+++ b/lib_paysages/scenery.h
@@ -26,6 +26,8 @@ typedef void (*SceneryCustomDataCallback)(PackStream* stream, void* data);
 void sceneryInit();
 void sceneryQuit();
 
+void sceneryAutoPreset();
+
 void scenerySetCustomDataCallback(SceneryCustomDataCallback callback_save, SceneryCustomDataCallback callback_load, void* data);
 
 void scenerySave(PackStream* stream);
diff --git a/lib_paysages/terrain/presets.c b/lib_paysages/terrain/presets.c
index 37d12f0..f71519f 100644
--- a/lib_paysages/terrain/presets.c
+++ b/lib_paysages/terrain/presets.c
@@ -12,6 +12,7 @@ void terrainAutoPreset(TerrainDefinition* definition, TerrainPreset preset)
     switch (preset)
     {
         case TERRAIN_PRESET_STANDARD:
+            noiseRandomizeOffsets(definition->_height_noise);
             noiseClearLevels(definition->_height_noise);
             noiseAddLevelsSimple(definition->_height_noise, resolution, pow(2.0, resolution - 1), -12.5, 12.5);
             noiseSetFunctionParams(definition->_height_noise, NOISE_FUNCTION_SIMPLEX, 0.0, 0.0);
diff --git a/lib_paysages/water.c b/lib_paysages/water.c
index 87b364b..fafb5d5 100644
--- a/lib_paysages/water.c
+++ b/lib_paysages/water.c
@@ -69,6 +69,8 @@ void waterDeleteDefinition(WaterDefinition* definition)
 
 void waterAutoPreset(WaterDefinition* definition, WaterPreset preset)
 {
+    noiseRandomizeOffsets(definition->_waves_noise);
+
     if (preset == WATER_PRESET_LAKE)
     {
         definition->transparency = 0.5;