diff --git a/README.md b/README.md
index b04aee5b..04205c2a 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,12 @@ If you enjoy this, make a small donation [here](https://www.paypal.com/cgi-bin/w
 
 ----
 
+![s170](s170/s170.png)
+
+170:[code](https://github.com/villares/sketch-a-day/tree/master/s170) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+----
+
 ![s169](s169/s169.png)
 
 169:[code](https://github.com/villares/sketch-a-day/tree/master/s169) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
diff --git a/s170/s170.png b/s170/s170.png
new file mode 100644
index 00000000..2de4086a
Binary files /dev/null and b/s170/s170.png differ
diff --git a/s170/s170.pyde b/s170/s170.pyde
new file mode 100644
index 00000000..0258936a
--- /dev/null
+++ b/s170/s170.pyde
@@ -0,0 +1,89 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com / sketch - a - day
+SKETCH_NAME = "s170"  # 180618
+
+add_library('peasycam')
+
+points, lines, walls, floors = [], [], [], []
+
+def setup():
+    global space
+    size(600, 600, P3D)
+    # hint(DISABLE_DEPTH_TEST)
+    strokeWeight(2)
+    # noSmooth()
+    cam = PeasyCam(this, 100)
+    cam.setMinimumDistance(100)
+    cam.setMaximumDistance(1000)
+    grid_dim = 10
+    space = width / grid_dim
+
+    for ix in range(grid_dim):
+        for iy in range(grid_dim):
+            for iz in range(grid_dim):
+                x = space / 2 + ix * space - width / 2 + random(10)
+                y = space / 2 + iy * space - width / 2 + random(10)
+                z = space / 2 + iz * space - width / 2  # + random(-2, 2)
+                points.append(PVector(x, y, z))
+
+    for p1 in points:
+        for p2 in points:
+            if p1 != p2:
+                stroke(200, 0, 100)
+                if (dist(p1.x, p1.y, p1.z,
+                         p2.x, p2.y, p2.z) < space * 1.1):
+                    lines.append((p1, p2))
+
+    for (p1, p2) in lines:
+        for (p3, p4) in lines:
+            if p1 != p3 and p1 != p4 and p2 != p3 and p2 != p4:
+                # walls
+                if p1.z == p2.z and p3.z == p4.z and p1.z != p3.z:
+                    if (dist(p1.x, p1.y, p1.z,
+                             p3.x, p3.y, p3.z) < space + 3 and
+                        dist(p2.x, p2.y, p2.z,
+                             p4.x, p4.y, p4.z) < space + 3):
+                        walls.append((p1, p2, p3, p4))
+                # floors
+                if p1.z == p2.z and p3.z == p4.z and p1.z == p3.z:
+                    if (dist(p1.x, p1.y, p1.z,
+                             p3.x, p3.y, p3.z) < space + 3 and
+                        dist(p2.x, p2.y, p2.z,
+                             p4.x, p4.y, p4.z) < space + 3):
+                        floors.append((p1, p2, p3, p4))
+
+    println(len(floors))
+
+
+def draw():
+    background(200)
+    noStroke()
+
+    fill(0, 0, 200, 100)
+    for (p1, p2, p3, p4) in walls:
+        beginShape()
+        vertex(p1.x, p1.y, p1.z)
+        vertex(p2.x, p2.y, p2.z)
+        vertex(p4.x, p4.y, p4.z)
+        vertex(p3.x, p3.y, p3.z)
+        endShape(CLOSE)
+
+    fill(200, 100, 0)
+    for (p1, p2, p3, p4) in floors:
+        beginShape()
+        vertex(p1.x, p1.y, p1.z)
+        vertex(p2.x, p2.y, p2.z)
+        vertex(p4.x, p4.y, p4.z)
+        vertex(p3.x, p3.y, p3.z)
+        endShape(CLOSE)
+
+    for (p1, p2) in lines:
+        stroke(200, 0, 100)
+        line(p1.x, p1.y, p1.z, p2.x, p2.y, p2.z)
+
+    for p in points:
+        pushMatrix()
+        translate(p.x, p.y, p.z)
+        fill(0)
+        noStroke()
+        box(2)
+        popMatrix()