14d

2021/sketch_2021_06_14d_escada/sketch_2021_06_14d_escada.pyde

@@ -0,0 +1,50 @@
+from villares.line_geometry import draw_poly
+
+def setup():
+    size(600, 600, P3D)
+    
+def draw():
+    background(100)
+    translate(300, 300)
+    if mousePressed:
+        rotateY(mouseX / 100.0)
+    translate(-150, -150)
+    face_a = stair_face(10, 30, 30, 5, 0)
+    draw_poly(face_a)
+    face_b = stair_face(10, 30, 30, 30, 100)
+    draw_poly(face_b)
+
+    for pair_a, pair_b in zip(edge_pair(face_a), edge_pair(face_b)):
+        p1, p2 = pair_a
+        p3, p4 = pair_b
+        beginShape()
+        vertex(*p1)
+        vertex(*p2)
+        vertex(*p4)
+        vertex(*p3)
+        endShape(CLOSE)    
+        
+def edge_pair(poly_points):
+    return zip(poly_points,
+               poly_points[1:] + [poly_points[0]])
+
+def stair_face(num_degraus, pisada, espelho, espessura, z):
+        pontos = []
+        x = y = 0
+        for _ in range(num_degraus):
+            pontos.append((x, y, z))
+            pontos.append((x + pisada, y, z))
+            x += pisada
+            y += espelho 
+        pontos.append((x, y, z))
+        x -= espessura
+        pontos.append((x, y, z))
+        y -= (espelho - espessura)
+        for _ in range(num_degraus - 1):
+            pontos.append((x, y, z))
+            pontos.append((x - pisada, y, z))
+            x -= pisada
+            y -= espelho 
+        pontos.append((x, y, z))
+        pontos.append((x - pisada + espessura, y, z))
+        return pontos