diff --git a/buildings/Building.py b/buildings/Building.py
index befeb87..5a7b740 100644
--- a/buildings/Building.py
+++ b/buildings/Building.py
@@ -1,5 +1,5 @@
 import random as rd
-from Enums import COLLUMN_STYLE
+from utils.Enums import COLLUMN_STYLE
 from buildings.Foundations import Foundations
 from buildings.Facade import Facade
 
diff --git a/buildings/Facade.py b/buildings/Facade.py
index 25b07ad..a4bddce 100644
--- a/buildings/Facade.py
+++ b/buildings/Facade.py
@@ -1,23 +1,46 @@
-from Enums import COLLUMN_STYLE
+import random as rd
+from utils.Enums import COLLUMN_STYLE, DIRECTION
+from gdpc import Editor
 from buildings.geometry.Vertice import Vertice
 from buildings.geometry.Rectangle import Rectangle
 from buildings.elements.Window import Window
 
 class Facade:
-    def __init__(self, vertices : list[Vertice], height : int, is_inner_or_outer : COLLUMN_STYLE):
+    def __init__(self, rdata, vertices : list[Vertice], height : int, lenght : int, is_inner_or_outer : COLLUMN_STYLE):
+        self.rdata = rdata
         self.vertices = vertices
         self.is_inner_or_outer = is_inner_or_outer
         self.height = height
+        self.lenght = lenght
         self.window_size = self.get_window_size()
         self.window =  self.get_window()
         self.has_balcony = self.has_balcony()
         self.has_inter_floor = self.has_inter_floor()
         
-    def build_facade(self):
-        pass
+    def build(self, editor : Editor, materials : list[str], y : int):
+        padding = 0
+        if self.is_inner_or_outer == COLLUMN_STYLE.OUTER or self.is_inner_or_outer == COLLUMN_STYLE.BOTH:
+            padding = 1
+            
+        for vertice in self.vertices:
+            xpadding, zpadding = 0, 0
+            if vertice.facing == DIRECTION.NORTH or vertice.facing == DIRECTION.SOUTH:
+                xpadding = padding
+            else: zpadding = padding
+            
+            vertice.fill(editor, materials[0], y, y + self.height, xpadding = xpadding, zpadding = zpadding)
+            self.window.build(editor, vertice, self.height, y, materials)
         
     def get_window_size(self) -> tuple[int,int]:
-        pass
+        max_width = self.lenght
+        max_height = min(self.height, self.rdata["windows"]["size"]["max_height"])
+        if self.is_inner_or_outer == COLLUMN_STYLE.OUTER or self.is_inner_or_outer == COLLUMN_STYLE.BOTH:
+            max_width -= 2
+         
+        return (
+                rd.randint(self.rdata["windows"]["size"]["min_width"],max_width),
+                rd.randint(self.rdata["windows"]["size"]["min_height"],max_height)
+        )
         
     def has_balcony(self) -> bool:
         pass
@@ -26,4 +49,4 @@ class Facade:
         pass
     
     def get_window(self) -> Window:
-        pass
\ No newline at end of file
+        return Window(self.rdata["windows"] ,self.window_size)
\ No newline at end of file
diff --git a/buildings/Foundations.py b/buildings/Foundations.py
index b36c610..76c5eab 100644
--- a/buildings/Foundations.py
+++ b/buildings/Foundations.py
@@ -1,7 +1,7 @@
 import random as rd
 import numpy as np
 import math
-from Enums import COLLUMN_STYLE
+from utils.Enums import COLLUMN_STYLE
 from buildings.geometry.Tile import Tile
 from buildings.geometry.Polygon import Polygon
 from buildings.geometry.Point import Point
@@ -54,9 +54,9 @@ class Foundations:
         
         # this bullshit is to create tiles from the matrice and the distribution
         x_padding = self.position.x
-        for x,xsize in enumerate(self.x_distribution):
+        for x,xsize in utils.Enumerate(self.x_distribution):
             z_padding = self.position.z
-            for z,zsize in enumerate(self.z_distribution):
+            for z,zsize in utils.Enumerate(self.z_distribution):
                 if self.matrice[x][z] == 1:
                     for xi in range(xsize):
                         for zi in range(zsize):
@@ -131,14 +131,13 @@ class Foundations:
         return self._suppr_doubblons_collumns(collumns)
                    
     def _suppr_doubblons_collumns(self, collumns : list[Collumn]): 
-        for index,collumn in enumerate(collumns):
+        for index,collumn in utils.Enumerate(collumns):
             if index == len(collumns)-1: break
             for compare in  collumns[index+1:]:
                 if collumn.point1.position == compare.point1.position :
                     if compare.is_outer : collumn.set_is_outer(True)
                     collumns.remove(compare)
-        
-        print(len(collumns))            
+                   
         return collumns
     
         
\ No newline at end of file
diff --git a/buildings/elements/Window.py b/buildings/elements/Window.py
index 81edaff..dfd15de 100644
--- a/buildings/elements/Window.py
+++ b/buildings/elements/Window.py
@@ -1,7 +1,63 @@
+import random as rd
+import math
+from gdpc import Editor, Block, geometry
+from utils.Enums import DIRECTION
+from buildings.geometry.Vertice import Vertice
+
 class Window:
-    def __init__(self, size : tuple[int,int]):
-        self.size = size
+    def __init__(self, rdata, size : tuple[int,int]):
+        self.rdata = rdata
+        self.width, self.height = size
+        self.is_grounded = self.is_grounded()
+        self.has_multiple_windows = self.has_multiple_windows()
+        self.padding = 0
         
+    def build(self, editor : Editor, vertice : Vertice, height : int, y : int, materials : list[str]):
+        self.padding = (vertice.get_size() - self.width)//2
+        if not self.is_grounded: y += (height - self.height)//2
+        
+        if self.has_multiple_windows: self.build_multiple_windows(editor, vertice, self.padding, self.height, y, materials)
+        else : vertice.fill(editor, materials[1], y, y + self.height, xpadding = self.padding, zpadding = self.padding)
+        
+    def build_multiple_windows(self, editor : Editor, vertice : Vertice, padding : int, height : int, y : int, materials : list[str]):
+        slices = rd.randint(2, self.width//self.rdata["size"]["min_width"])
+        windows_count = math.ceil(slices/2)
+        inter_count = slices - windows_count
+        window_size = rd.randint(self.rdata["size"]["min_width"], self.width-inter_count // windows_count) 
+        inter_size = (self.width - window_size*windows_count) // inter_count
+        
+        revert, switching = slices % 2 == 0, math.ceil(slices/2)
+        is_revert, gap = False, 0
+        for i in range(1,slices+1):
+            modulo = i % 2
+            if revert and i == switching: is_revert = True
+            
+            # kepp a spacing between windows, "is revert" is used to keep symetry
+            if modulo == 0 or (modulo == 1 and is_revert):
+                #set the values to orient windows in x or z axis
+                xpadding,xlen,zpadding,zlen = 0,0,0,0
+                if vertice.facing == DIRECTION.NORTH or vertice.facing == DIRECTION.SOUTH:
+                    xpadding,xlen = self.padding + gap, window_size
+                else: zpadding,zlen = self.padding + gap, window_size
+                
+                geometry.placeCuboid(editor, 
+                                    (vertice.point1.x+xpadding, y, vertice.point1.z+zpadding), 
+                                    (vertice.point1.x+xpadding+xlen, y+self.height, vertice.point1.z+zpadding+zlen),
+                                    Block(materials[1]))
+                gap += window_size
+            else : 
+                gap += inter_size
+                  
+    def is_grounded(self):
+        # if the window is grounded or if there is a padding between the window and the ground
+        if self.rdata["grounded"] >= rd.random(): return True
+        return False
+    
+    def has_multiple_windows(self):
+        if self.width >  self.rdata["size"]["max_width"]: return True
+        if self.width >=  self.rdata["multiple"]["min_width"]:
+            if self.rdata["multiple"]["proba"] >= rd.random(): return True
+        return False
     
     def open(self):
         pass
diff --git a/buildings/geometry/Polygon.py b/buildings/geometry/Polygon.py
index 9e7ea8e..16a03bd 100644
--- a/buildings/geometry/Polygon.py
+++ b/buildings/geometry/Polygon.py
@@ -1,4 +1,4 @@
-from Enums import DIRECTION
+from utils.Enums import DIRECTION
 from gdpc import Editor, Block, geometry
 from buildings.geometry.Tile import Tile
 from buildings.geometry.Point import Point
@@ -70,7 +70,7 @@ class Polygon:
     def set_vertices_and_neighbors(self, tiles : list[Tile], vertices : list[Vertice]):
         for tile in tiles:
             targets = tile.get_neighbors_coords()
-            for vertice_num,target in enumerate(targets):
+            for vertice_num,target in utils.Enumerate(targets):
                 has_neighbor = self._has_neighbor(target, tiles)
                 if not has_neighbor:
                     vertice = tile.get_vertice(vertice_num)
diff --git a/buildings/geometry/Rectangle.py b/buildings/geometry/Rectangle.py
index 8c7ea24..784d1fc 100644
--- a/buildings/geometry/Rectangle.py
+++ b/buildings/geometry/Rectangle.py
@@ -9,6 +9,9 @@ class Rectangle:
     def get_position(self):
         return (self.point1.position, self.point2.position)
     
-    def fill(self,editor : Editor, material : str, y : int, y2 : int = None):
+    def fill(self,editor : Editor, material : str, y : int, y2 : int = None, xpadding : int = 0, zpadding : int = 0):
+        if self.point2.x - self.point1.x < 2*xpadding: xpadding = 0
+        if self.point2.z - self.point1.z < 2*zpadding: zpadding = 0
         if y2 == None: y2 = y
-        geometry.placeCuboid(editor, (self.point1.x, y, self.point1.z), (self.point2.x, y2, self.point2.z), Block(material))
+        
+        geometry.placeCuboid(editor, (self.point1.x+xpadding, y, self.point1.z+zpadding), (self.point2.x-xpadding, y2, self.point2.z-zpadding), Block(material))
diff --git a/buildings/geometry/Tile.py b/buildings/geometry/Tile.py
index f1e2167..de864da 100644
--- a/buildings/geometry/Tile.py
+++ b/buildings/geometry/Tile.py
@@ -1,5 +1,5 @@
 from gdpc import Editor, Block, geometry
-from Enums import DIRECTION
+from utils.Enums import DIRECTION
 from buildings.geometry.Point import Point
 from buildings.geometry.Vertice import Vertice
 
diff --git a/buildings/geometry/Vertice.py b/buildings/geometry/Vertice.py
index df58b40..edca28a 100644
--- a/buildings/geometry/Vertice.py
+++ b/buildings/geometry/Vertice.py
@@ -1,9 +1,9 @@
-from Enums import DIRECTION
+from utils.Enums import DIRECTION
 from buildings.geometry.Point import Point
 from buildings.geometry.Rectangle import Rectangle
 
 class Vertice(Rectangle):
-    def __init__(self, point1 : Point, point2 : Point, facing : str):
+    def __init__(self, point1 : Point, point2 : Point, facing : DIRECTION):
         Rectangle.__init__(self, point1, point2)
         self.facing = facing
         
diff --git a/main.py b/main.py
index 818d02d..3020b3a 100644
--- a/main.py
+++ b/main.py
@@ -1,22 +1,45 @@
 from gdpc import Editor, Block, geometry
 import networks.curve as curve
 import numpy as np
-import json
+from utils.JsonReader import JsonReader
+from utils.YamlReader import YamlReader
 from buildings.Building import Building
 
+from buildings.geometry.Vertice import Vertice
+from buildings.geometry.Point import Point
+from utils.Enums import DIRECTION,COLLUMN_STYLE
+from buildings.Facade import Facade
+
 editor = Editor(buffering=True)
 
-f = open('buildings\shapes.json')
-shapes = json.load(f)
+f = JsonReader('buildings\shapes.json')
+shapes = f.data
+
+y = YamlReader('params.yml')
+random_data = y.data
+
+geometry.placeCuboid(editor, (0,-60,-5), (100,-45,-5), Block("air"))
+
+x = 0
+facade = []
+for i in range(3,13):
+    facade.append(Facade(random_data["buildings"]["facade"],[Vertice(Point(x,0,-5), Point(x+i,0,-5), DIRECTION.NORTH)],i,i,COLLUMN_STYLE.NONE))
+    x += i+2
+
+for f in facade:
+    f.build(editor, ["stone_bricks", "glass_pane"], -60)
  
 # F = Foundations((0,0), (20,20), shapes[0]['matrice'])
 # F.polygon.fill_polygon(editor, "stone", -60)
-geometry.placeCuboid(editor, (-10,-60,-10), (85,-55,85), Block("air"))
-B = Building((0,0), (75,75), shapes[7]['matrice'])
-B.foundations.polygon.fill_vertice(editor, "pink_wool", -60)
-for collumn in B.foundations.collumns:
-    collumn.fill(editor, "white_concrete", -60, -55)
-B.foundations.polygon.fill_polygon(editor, "white_concrete", -60)
+
+# geometry.placeCuboid(editor, (-10,-60,-10), (85,-55,85), Block("air"))
+# B = Building((0,0), (75,75), shapes[7]['matrice'])
+# B.foundations.polygon.fill_vertice(editor, "pink_wool", -60)
+# for collumn in B.foundations.collumns:
+#     collumn.fill(editor, "white_concrete", -60, -55)
+# B.foundations.polygon.fill_polygon(editor, "white_concrete", -60)
+
+
 
 # # Get a block
 # block = editor.getBlock((0,48,0))
diff --git a/params.yml b/params.yml
index f879b5d..d5a3875 100644
--- a/params.yml
+++ b/params.yml
@@ -1 +1,36 @@
-// contains all random variables
+#  contains all random variables
+buildings:
+  tile_size:
+    min_tile_size: 3
+    max_tile_size: 12
+
+  foudations:
+    collumn_style :
+    # proportion of each style
+      - none: 1
+      - inner: 1
+      - outer: 1
+      - both: 1
+    floor:
+      min_height: 4
+      max_height: 7
+
+  facade:
+    windows:
+      size:
+        min_height: 2
+        max_height: 6
+        min_width: 1
+        max_width: 12
+      crossbars:
+        min_height_for_vertical_crossbar: 3
+        vertical_crossbar: 0.25
+        min_width_for_horizontal_crossbar: 3
+        horizontal_crossbar: 0.25
+      grounded: 0.5
+      multiple:
+        # min size and probability of multiple windows on the same vertice
+        min_width: 5
+        proba: 0.5
+    inter_floor: 0.5
+    balcony: 0.25
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 1ef7339..346c05f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ gdpc==7.1.0
 matplotlib==3.8.2
 numpy==1.26.4
 scipy==1.13.0
+pyyaml==6.0.1
diff --git a/Enums.py b/utils/Enums.py
similarity index 92%
rename from Enums.py
rename to utils/Enums.py
index 33c7487..37a15fa 100644
--- a/Enums.py
+++ b/utils/Enums.py
@@ -7,6 +7,7 @@ class DIRECTION(Enum):
     SOUTH = 3
     
 class COLLUMN_STYLE(Enum):
+    NONE = 0
     INNER = 1
     OUTER = 2
     BOTH = 3
\ No newline at end of file
diff --git a/utils/JsonReader.py b/utils/JsonReader.py
new file mode 100644
index 0000000..c2b462c
--- /dev/null
+++ b/utils/JsonReader.py
@@ -0,0 +1,11 @@
+import json
+
+class JsonReader:
+    def __init__(self, json_file):
+        self.data = self._load_json(json_file)
+        
+    def _load_json(self, json_file : str):
+        f = open(json_file)
+        js = json.load(f)
+        
+        return js
\ No newline at end of file
diff --git a/utils/YamlReader.py b/utils/YamlReader.py
new file mode 100644
index 0000000..4b2e883
--- /dev/null
+++ b/utils/YamlReader.py
@@ -0,0 +1,11 @@
+import yaml
+
+class YamlReader:
+    def __init__(self, yaml_file):
+        self.data = self._load_yaml(yaml_file)
+        
+    def _load_yaml(self, yaml_file : str):
+        with open(yaml_file, 'r') as stream:
+            data_loaded = yaml.safe_load(stream)
+        
+        return data_loaded
\ No newline at end of file