piet

examples/piet.py

@@ -0,0 +1,64 @@
+from shapely.geometry import LineString
+import axi
+import random
+
+X1 = 0
+X2 = 11
+Y1 = 0
+Y2 = 8.5
+
+def make_segment(x1, y1, x2, y2):
+    return LineString([(x1, y1), (x2, y2)])
+
+def intersections(segments, segment):
+    result = []
+    for other in segments:
+        x = segment.intersection(other)
+        if x:
+            try:
+                result.append((x.x, x.y))
+            except Exception:
+                pass
+    return result
+
+def new_segment(segments):
+    if random.random() < 0.5:
+        x = X1 + random.random() * (X2 - X1)
+        x = round(x * 5) / 5
+        s = make_segment(x, Y1, x, Y2)
+        ixs = intersections(segments, s)
+        (x1, y1), (x2, y2) = random.sample(ixs, 2)
+        return make_segment(x1, y1, x2, y2)
+    else:
+        y = Y1 + random.random() * (Y2 - Y1)
+        y = round(y * 5) / 5
+        s = make_segment(X1, y, X2, y)
+        ixs = intersections(segments, s)
+        (x1, y1), (x2, y2) = random.sample(ixs, 2)
+        return make_segment(x1, y1, x2, y2)
+
+def main():
+    # seed = random.randint(0, 99999999)
+    # print seed
+    random.seed(82480774)
+    segments = [
+        make_segment(X1, Y1, X2, Y1),
+        make_segment(X1, Y2, X2, Y2),
+        make_segment(X1, Y2, X1, Y1),
+        make_segment(X2, Y2, X2, Y1),
+    ]
+    for i in range(50):
+        # print i
+        segment = new_segment(segments)
+        segments.append(segment)
+    paths = []
+    for segment in segments:
+        paths.append(list(segment.coords))
+    d = axi.Drawing(paths)
+    d = d.sort_paths()
+    d = d.join_paths(0.001)
+    d.render().write_to_png('out.png')
+    axi.draw(d)
+
+if __name__ == '__main__':
+    main()