From 6ff92b3a4f9d35ce83c6ad9801b016f55674affe Mon Sep 17 00:00:00 2001
From: Michael Fogleman <fogleman@gmail.com>
Date: Sun, 11 Mar 2018 15:13:31 -0400
Subject: [PATCH] pen test

---
 examples/pen_test.py | 136 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 examples/pen_test.py

diff --git a/examples/pen_test.py b/examples/pen_test.py
new file mode 100644
index 0000000..cc03221
--- /dev/null
+++ b/examples/pen_test.py
@@ -0,0 +1,136 @@
+import axi
+import math
+import random
+
+H, W = axi.A3_SIZE
+
+def text(font):
+    text = ''.join(map(chr, range(32, 128)))
+    n = 96 // 3
+    text = '\n'.join(text[i:i+n] for i in range(0, 96, n))
+    d = font.wrap(text, W, 1.5)
+    d = d.center(12, 8.5)
+    return d
+
+def vertical_stack(ds, spacing=0):
+    result = axi.Drawing()
+    y = 0
+    for d in ds:
+        d = d.origin().translate(-d.width / 2, y)
+        result.add(d)
+        y += d.height + spacing
+    return result
+
+def horizontal_stack(ds, spacing=0):
+    result = axi.Drawing()
+    x = 0
+    for d in ds:
+        d = d.origin().translate(x, -d.height / 2)
+        result.add(d)
+        x += d.width + spacing
+    return result
+
+def circle(cx, cy, r, revs, points_per_rev):
+    points = []
+    a0 = random.random() * 2 * math.pi
+    n = int(revs * points_per_rev)
+    for i in range(n + 1):
+        a = a0 + revs * 2 * math.pi * i / n
+        x = cx + math.cos(a) * r
+        y = cy + math.sin(a) * r
+        points.append((x, y))
+    return points
+
+def fill_circle(cx, cy, r1, r2, revs, points_per_rev):
+    points = []
+    a0 = random.random() * 2 * math.pi
+    n = int(revs * points_per_rev)
+    for i in range(n + 1):
+        a = a0 + revs * 2 * math.pi * i / n
+        r = r1 + (r2 - r1) * min(1, float(i) / (n - points_per_rev))
+        x = cx + math.cos(a) * r
+        y = cy + math.sin(a) * r
+        points.append((x, y))
+    return points
+
+def circles():
+    x = 0
+    r = 0
+    paths = []
+    while x + r < W:
+        paths.append(circle(x, 0, r, 2, 360))
+        x += r
+        r += 0.0025
+        x += r
+        x += 0.1
+    return axi.Drawing(paths)
+
+def fill_circles():
+    x = 0
+    r = 0
+    paths = []
+    while x + r < W:
+        revs = (r * 80) + 2
+        paths.append(fill_circle(W - x, 0, 0, r, revs, 360))
+        x += r
+        r += 0.0025
+        x += r
+        x += 0.1
+    return axi.Drawing(paths)
+
+def line():
+    return axi.Drawing([[(0, 0), (W, 0)]])
+
+def lines():
+    x = 0
+    s0 = 0.01 / 25.4
+    s1 = 3 / 25.4
+    h = 0.5
+    paths = []
+    i = 0
+    while x < W:
+        if i % 2 == 0:
+            paths.append([(x, 0), (x, h)])
+        else:
+            paths.append([(x, h), (x, 0)])
+        pct = x / W
+        # pct = pct ** 2
+        s = s0 + (s1 - s0) * pct
+        x += s
+        i += 1
+    # print(len(paths))
+    return axi.Drawing(paths).join_paths(100)
+
+def title(name):
+    font = axi.Font(axi.FUTURAL, 18)
+    d = font.wrap(name, W, 1.5)
+    return d
+
+def main():
+    name = 'Rapidograph 0.1mm'
+    ds = []
+    for font in [axi.FUTURAL, axi.TIMESR, axi.TIMESIB]:
+        d = text(axi.Font(font, 13))
+        ds.append(d)
+    d = horizontal_stack(ds, 0.2).center(W, H)
+    d = vertical_stack([title(name), d], 0.2)
+    d = vertical_stack([d, line()], 0.2)
+    d = vertical_stack([d, line()], 0.1)
+    d = vertical_stack([d, circles()], 0.2)
+    d = vertical_stack([d, fill_circles()], 0.1)
+    d = vertical_stack([d, lines()], 0.2)
+    d = d.move(W / 2, 0, 0.5, 0)
+    d = d.translate(0, 0)
+    print(d.bounds)
+
+    # d = d.sort_paths()
+    # d = d.join_paths(0.01)
+    d = d.simplify_paths(0.001)
+    d = d.rotate(-90).move(0, W / 2, 0, 0.5)
+    print(d.bounds)
+
+    d.dump('out.axi')
+    d.render(bounds=axi.A3_BOUNDS).write_to_png('out.png')
+
+if __name__ == '__main__':
+    main()