Lock requirements from pip freeze on a working system with python 3.8

axi/drawing.py

@@ -32,7 +32,10 @@ class Drawing(object):
     def loads(cls, data):
         paths = []
         for line in data.split('\n'):
-            path = line.strip().split()
+            line = line.strip()
+            if line.startswith('#'):
+                continue
+            path = line.split()
             path = [tuple(map(float, x.split(','))) for x in path]
             path = expand_quadratics(path)
             if path:

examples/box.py

@@ -0,0 +1,16 @@
+import axi
+
+W, H = 14, 11
+BOUNDS = axi.A3_BOUNDS
+
+def main():
+    paths = [
+        [(0, 0), (W, 0), (W, H), (0, H), (0, 0)]
+    ]
+    d = axi.Drawing(paths)
+    d = d.center(*BOUNDS[-2:])
+    d.dump('box.axi')
+    d.render(bounds=BOUNDS).write_to_png('box.png')
+
+if __name__ == '__main__':
+    main()

examples/circles_offset.py

@@ -0,0 +1,56 @@
+import axi
+import math
+import random
+
+W, H = axi.A3_SIZE
+
+def circle_ray_intersection(cx, cy, cr, ox, oy, dx, dy):
+    xd = ox - cx
+    yd = oy - cy
+    a = dx * dx + dy * dy
+    b = 2 * (dx * (ox - cx) + dy * (oy - cy))
+    c = xd * xd + yd * yd - cr * cr
+    d = b * b - 4 * a * c
+    if d < 0:
+        return None
+    t = (-b + math.sqrt(d)) / (2 * a)
+    x = ox + dx * t
+    y = oy + dy * t
+    return (x, y)
+
+def path(x0, y0, r0, x1, y1, r1):
+    t = random.random()
+    a0 = random.random() * 2 * math.pi
+    a1 = a0 + math.radians(10)
+    n = 100
+    result = []
+    for i in range(n + 1):
+        u = i / n
+        a = a0 + (a1 - a0) * u
+        dx = math.cos(a)
+        dy = math.sin(a)
+        ax, ay = circle_ray_intersection(x0, y0, r0, x0, y0, dx, dy)
+        bx, by = circle_ray_intersection(x1, y1, r1, x0, y0, dx, dy)
+        x = ax + (bx - ax) * t
+        y = ay + (by - ay) * t
+        result.append((x, y))
+    return result
+
+def main():
+    x0 = 0
+    y0 = 0
+    r0 = 1.5
+    x1 = -0.25
+    y1 = 0
+    r1 = 2
+    paths = []
+    for i in range(500):
+        paths.append(path(x0, y0, r0, x1, y1, r1))
+    d = axi.Drawing(paths).rotate_and_scale_to_fit(W, H)#.sort_paths()
+    im = d.render()
+    im.write_to_png('circles_offset.png')
+    d.dump('circles_offset.axi')
+    # axi.draw(d)
+
+if __name__ == '__main__':
+    main()

examples/fractal.py

@@ -0,0 +1,28 @@
+from shapely import geometry
+import axi
+import sys
+
+def main():
+    size = axi.A3_SIZE
+    bounds = axi.A3_BOUNDS
+    d = axi.Drawing.load(sys.argv[1])
+    print(len(d.paths[0]))
+    d = d.scale_to_fit(*size).center(*size)
+    d = d.simplify_paths(0.01 / 25.4)
+    print(len(d.paths[0]))
+
+    g = geometry.Polygon(d.paths[0])
+    while True:
+        b = -0.25 / 25.4
+        g = g.buffer(b)
+        if g.is_empty:
+            break
+        g = g.simplify(0.01 / 25.4)
+        d.paths.extend(axi.shapely_to_paths(g))
+
+    print(d.bounds)
+    d.dump('out.axi')
+    d.render(bounds=bounds, line_width=0.2/25.4).write_to_png('out.png')
+
+if __name__ == '__main__':
+    main()

examples/handibot-polygons.py

@@ -0,0 +1,75 @@
+from math import *
+from shapely import geometry, ops
+import axi
+
+W = 6
+H = 8
+BOUNDS = (0, 0, W, H)
+
+BIT_RADIUS = 0.125
+
+def regular_polygon(n, x, y, r):
+    points = []
+    for i in range(n):
+        t = 2 * pi / n * i
+        points.append((x + r * cos(t), y + r * sin(t)))
+    points.append(points[0])
+    return points
+
+def polygon_splits(n, x, y, r, b):
+    lines = []
+    for i in range(n):
+        t = 2 * pi / n * (i + 0.5)
+        lines.append([(x, y), (x + r * cos(t), y + r * sin(t))])
+    return geometry.MultiLineString(lines).buffer(b)
+
+def polygon(n, r, br, notch=False):
+    p = regular_polygon(n, 0, 0, r)
+    g = geometry.Polygon(p)
+    g = g.buffer(br).exterior
+    if notch:
+        g = g.difference(polygon_splits(n, 0, 0, r * 2, br * 2))
+        g = ops.linemerge(g)
+    p = axi.shapely_to_paths(g)
+    return axi.Drawing(p).origin()
+
+def drawings_to_gcode(ds, zs, z0, f):
+    lines = []
+    lines.append('G90') # absolute coordinates
+    lines.append('G20') # inches
+    lines.append('G0 Z%g' % z0) # jog to z0
+    lines.append('M4') # turn on router
+    lines.append('G4 P2.0') # dwell for N seconds
+    lines.append('F%g' % f) # set feed rate (inches per minute)
+    for d, z in zip(ds, zs):
+        for path in d.paths:
+            # jog to first point
+            x, y = path[0]
+            lines.append('G0 X%g Y%g' % (x, y))
+            # move z down
+            lines.append('G1 Z%g' % z)
+            # draw path
+            for x, y in path[1:]:
+                lines.append('G1 X%g Y%g' % (x, y))
+            # move z up
+            lines.append('G1 Z%g' % z0)
+    lines.append('M8')
+    lines.append('G0 X0 Y0')
+    return '\n'.join(lines)
+
+def main():
+    d0 = polygon(3, 3 / sqrt(3), BIT_RADIUS, False)
+    d1 = polygon(3, 3 / sqrt(3), BIT_RADIUS, True)
+
+    ds = [d0, d0, d1]
+    ds = [d.translate(1, 1) for d in ds]
+    zs = [-0.25, -0.5, -0.75]
+
+    g = drawings_to_gcode(ds, zs, 0.5, 30)
+    print(g)
+
+    for i, (d, z) in enumerate(zip(ds, zs)):
+        d.render(bounds=BOUNDS).write_to_png('z%g.png' % z)
+
+if __name__ == '__main__':
+    main()

examples/nes.py

@@ -1,20 +1,24 @@
-from __future__ import division
+from __future__ import division, print_function
 
 import axi
 import numpy as np
 import os
 import sys
 
-NUMBER = '?'
-TITLE = 'Five Seconds of Donkey Kong'
+
+W, H = 11-2, 14-2
+DW, DH = axi.A3_SIZE
+
+NUMBER = '48'
+TITLE = 'Fifteen Seconds of The Legend of Zelda'
 LABEL = '#%s' % NUMBER
 
-COLUMNS = 6
-SECONDS = 5
-FRAME_OFFSET = 0
-MIN_CHANGES = 1
+COLUMNS = 8
+SECONDS = 15
+FRAME_OFFSET = 900
+MIN_CHANGES = 2
 UNIQUE = False
-SIMPLIFY = 0
+SIMPLIFY = 5
 
 def simplify_sparkline(values, n):
     if not n:
@@ -52,11 +56,11 @@ def title():
     d = d.join_paths(0.01)
     return d
 
-def label():
+def label(x, y):
     d = axi.Drawing(axi.text(LABEL, axi.FUTURAL))
     d = d.scale_to_fit_height(0.125)
     d = d.rotate(-90)
-    d = d.move(12, 8.5, 1, 1)
+    d = d.move(x, y, 1, 1)
     d = d.join_paths(0.01)
     return d
 
@@ -72,9 +76,9 @@ def main():
     lines = filter(None, lines)
 
     # read values and transpose
-    data = [map(int, line.split(',')) for line in lines]
+    data = [tuple(map(int, line.split(','))) for line in lines]
     data = np.transpose(data)
-    print '%d series in file' % len(data)
+    print('%d series in file' % len(data))
 
     # trim to SECONDS worth of data
     n = len(data[0])
@@ -86,7 +90,7 @@ def main():
 
     # remove addresses with too few values
     data = [x for x in data if len(set(x)) > MIN_CHANGES]
-    print '%d series that changed' % len(data)
+    print('%d series that changed' % len(data))
 
     # remove duplicate series
     if UNIQUE:
@@ -99,16 +103,16 @@ def main():
             seen.add(k)
             new_data.append(x)
         data = new_data
-        print '%d unique series' % len(data)
+        print('%d unique series' % len(data))
 
     # delete repetitive stuff
-    # del data[136:136+8*14]
+    del data[136:136+8*14]
 
     # trim so all rows are full
     data = data[:int((len(data) // COLUMNS) * COLUMNS)]
-    print '%d series after trimming' % len(data)
+    print('%d series after trimming' % len(data))
 
-    print '%d data points each' % len(data[0])
+    print('%d data points each' % len(data[0]))
 
     # create sparklines in a grid pattern
     paths = []
@@ -128,16 +132,21 @@ def main():
             y = 1 - value + r * 1.5
             path.append((x, y))
         paths.append(path)
+
     d = axi.Drawing(paths)
 
     # add title and label and fit to page
-    d = d.scale(8.5 / d.width, (12 - 0.5) / d.height)
+    d = d.scale(W / d.width, (H - 0.5) / d.height)
     d = stack_drawings([d, title()], 0.25)
     d = d.rotate(-90)
-    d = d.center(12, 8.5)
-    d.add(label())
+    d = d.center(DW, DH)
+    _, _, lx, ly = d.bounds
+    d.add(label(lx, ly))
 
-    print d.bounds
+    d = d.simplify_paths(0.001)
+
+    print(d.bounds)
+    print(d.size)
 
     # save outputs
     dirname = 'nes/%s' % NUMBER
@@ -146,11 +155,10 @@ def main():
     except Exception:
         pass
     d.dump(os.path.join(dirname, 'out.axi'))
-    rotated = d.rotate(90).center(8.5, 12)
+    rotated = d.rotate(90).center(DH, DW)
     rotated.dump_svg(os.path.join(dirname, 'out.svg'))
-    im = rotated.render(
-        scale=109 * 1, line_width=0.3/25.4,
-        show_axi_bounds=False, use_axi_bounds=False)
+    x0, y0, x1, y1 = rotated.bounds
+    im = rotated.render(bounds=(x0 - 1, y0 - 1, x1 + 1, y1 + 1))
     im.write_to_png(os.path.join(dirname, 'out.png'))
 
 if __name__ == '__main__':

examples/overlapping_circles.go

@@ -0,0 +1,191 @@
+package main
+
+import (
+	"fmt"
+	"math"
+	"os"
+	"sort"
+)
+
+const (
+	// D = math.Pi
+	S = 2
+)
+
+type Point struct {
+	X, Y float64
+}
+
+func (a Point) Lerp(b Point, t float64) Point {
+	x := a.X + (b.X-a.X)*t
+	y := a.Y + (b.Y-a.Y)*t
+	return Point{x, y}
+}
+
+type Segment struct {
+	P0, P1 Point
+}
+
+type Circle struct {
+	X, Y, R float64
+}
+
+func (c Circle) ContainsPoint(p Point) bool {
+	return math.Hypot(p.X-c.X, p.Y-c.Y) < c.R
+}
+
+func (c Circle) Discretize(n int) []Point {
+	points := make([]Point, n)
+	for i := range points {
+		t := float64(i) / float64(n-1)
+		a := 2 * math.Pi * t
+		x := math.Cos(a)*c.R + c.X
+		y := math.Sin(a)*c.R + c.Y
+		points[i] = Point{x, y}
+	}
+
+	return points
+}
+
+func (c Circle) IntersectLine(p0, p1 Point) (float64, float64, bool) {
+	dx := p1.X - p0.X
+	dy := p1.Y - p0.Y
+	A := dx*dx + dy*dy
+	B := 2 * (dx*(p0.X-c.X) + dy*(p0.Y-c.Y))
+	C := (p0.X-c.X)*(p0.X-c.X) + (p0.Y-c.Y)*(p0.Y-c.Y) - c.R*c.R
+	det := B*B - 4*A*C
+	if A <= 0 || det <= 0 {
+		return 0, 0, false
+	}
+	t0 := (-B + math.Sqrt(det)) / (2 * A)
+	t1 := (-B - math.Sqrt(det)) / (2 * A)
+	return t0, t1, true
+}
+
+func makeCircles(circleRadius, visibleRadius float64) []Circle {
+	var circles []Circle
+	a := int(math.Ceil(circleRadius + visibleRadius))
+	for y := -a; y <= a; y++ {
+		for x := -a; x <= a; x++ {
+			cx := float64(x)
+			cy := float64(y)
+			if math.Hypot(cx, cy) <= circleRadius+visibleRadius {
+				circles = append(circles, Circle{cx, cy, circleRadius})
+			}
+		}
+	}
+	return circles
+}
+
+func count(circles []Circle, p Point) int {
+	var result int
+	for _, c := range circles {
+		if c.ContainsPoint(p) {
+			result++
+		}
+	}
+	return result
+}
+
+type splitFunc func(Point) bool
+
+func split(circles []Circle, p0, p1 Point, f splitFunc) []Segment {
+	var ts []float64
+	for _, c := range circles {
+		t0, t1, ok := c.IntersectLine(p0, p1)
+		if ok {
+			ts = append(ts, t0)
+			ts = append(ts, t1)
+		}
+	}
+	sort.Float64s(ts)
+	var segments []Segment
+	for i := 1; i < len(ts); i++ {
+		t0 := ts[i-1]
+		t1 := ts[i]
+		if t1 < 0 || t0 > 1 {
+			continue
+		}
+		t0 = math.Max(t0, 0)
+		t1 = math.Min(t1, 1)
+		t := (t0 + t1) / 2
+		p := p0.Lerp(p1, t)
+		if f(p) {
+			q0 := p0.Lerp(p1, t0)
+			q1 := p0.Lerp(p1, t1)
+			segments = append(segments, Segment{q0, q1})
+		}
+	}
+	return segments
+}
+
+func run(path string, d, s float64) error {
+	file, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+
+	circles := makeCircles(d/2, s*math.Sqrt(2))
+
+	x0 := -s
+	x1 := s
+	y0 := -s
+	y1 := s
+
+	f := func(p Point) bool {
+		return count(circles, p)%2 == 1
+	}
+
+	g := func(p Point) bool {
+		return math.Hypot(p.X, p.Y) <= s
+	}
+	outer := []Circle{Circle{0, 0, s}}
+
+	const n = 200
+	for i := 0; i <= n; i++ {
+		t := float64(i) / float64(n)
+		y := y0 + (y1-y0)*t
+		p0 := Point{x0, y}
+		p1 := Point{x1, y}
+		segments := split(circles, p0, p1, f)
+		for _, s := range segments {
+			clipped := split(outer, s.P0, s.P1, g)
+			for _, cs := range clipped {
+				fmt.Fprintf(file, "%g,%g %g,%g\n", cs.P0.X, cs.P0.Y, cs.P1.X, cs.P1.Y)
+			}
+		}
+	}
+
+	for _, c := range circles {
+		points := c.Discretize(360)
+		for i := 1; i < len(points); i++ {
+			p0 := points[i-1]
+			p1 := points[i]
+			clipped := split(outer, p0, p1, g)
+			for _, cs := range clipped {
+				fmt.Fprintf(file, "%g,%g %g,%g\n", cs.P0.X, cs.P0.Y, cs.P1.X, cs.P1.Y)
+			}
+		}
+	}
+
+	points := outer[0].Discretize(360)
+	for _, p := range points {
+		fmt.Fprintf(file, "%g,%g ", p.X, p.Y)
+	}
+	fmt.Fprintf(file, "\n")
+
+	return nil
+}
+
+func main() {
+	d0 := 1.0
+	d1 := math.Pi
+	n := 48
+	for i := 0; i < n; i++ {
+		t := float64(i) / float64(n-1)
+		d := d0 + (d1-d0)*t
+		path := fmt.Sprintf("overlapping_circles/%.8f.axi", d)
+		fmt.Println(path)
+		run(path, d, S)
+	}
+}

examples/overlapping_circles.py

@@ -0,0 +1,48 @@
+import axi
+import os
+
+N_PER_ROW = 8
+SPACING = 2
+
+def load(path):
+    d = axi.Drawing.load(path)
+    d = d.scale_to_fit(1.9, 1.9)
+    d = d.join_paths(0.5 / 25.4)
+    d = d.sort_paths()
+    d = d.join_paths(0.5 / 25.4)
+    d = d.origin()
+    return d
+
+def main():
+    dirname = 'overlapping_circles'
+    i = 0
+    j = 0
+    x = 0
+    y = 0
+    drawing = axi.Drawing([])
+    for filename in sorted(os.listdir(dirname)):
+        if not filename.endswith('.axi'):
+            continue
+        path = os.path.join(dirname, filename)
+        print(path)
+        d = load(path)
+        d = d.translate(x, y)
+        drawing.add(d)
+        x += SPACING
+        i += 1
+        if i == N_PER_ROW:
+            i = 0
+            j += 1
+            x = 0
+            if j % 2:
+                x = SPACING / 2
+            y += SPACING * 0.866
+    d = drawing
+    d = d.center(*axi.A3_SIZE)
+    print(len(d.paths))
+    im = d.render(bounds=axi.A3_BOUNDS, line_width = 0.4 / 25.4)
+    im.write_to_png('overlapping_circles.png')
+    d.dump('overlapping_circles.axi')
+
+if __name__ == '__main__':
+    main()

examples/rush.py

@@ -0,0 +1,152 @@
+from collections import *
+from math import *
+import axi
+import fileinput
+
+BOUNDS = axi.A3_BOUNDS
+X, Y, W, H = BOUNDS
+P = 0.25
+R = 0.125
+COLS = 16
+ROWS = 16
+N = ROWS * COLS
+
+def rectangle(x, y, w, h):
+    return [
+        (x, y),
+        (x + w, y),
+        (x + w, y + h),
+        (x, y + h),
+        (x, y),
+    ]
+
+def padded_rectangle(x, y, w, h, p):
+    x += p
+    y += p
+    w -= p * 2
+    h -= p * 2
+    return rectangle(x, y, w, h)
+
+def arc(cx, cy, r, a0, a1, n):
+    path = []
+    for i in range(n+1):
+        t = i / n
+        a = a0 + (a1 - a0) * t
+        x = cx + r * cos(a)
+        y = cy + r * sin(a)
+        path.append((x, y))
+    return path
+
+def rounded_rectangle(x, y, w, h, r):
+    n = 18
+    x0, x1, x2, x3 = x, x + r, x + w - r, x + w
+    y0, y1, y2, y3 = y, y + r, y + h - r, y + h
+    path = []
+    path.extend([(x1, y0), (x2, y0)])
+    path.extend(arc(x2, y1, r, radians(270), radians(360), n))
+    path.extend([(x3, y1), (x3, y2)])
+    path.extend(arc(x2, y2, r, radians(0), radians(90), n))
+    path.extend([(x2, y3), (x1, y3)])
+    path.extend(arc(x1, y2, r, radians(90), radians(180), n))
+    path.extend([(x0, y2), (x0, y1)])
+    path.extend(arc(x1, y1, r, radians(180), radians(270), n))
+    return path
+
+def padded_rounded_rectangle(x, y, w, h, r, p):
+    x += p
+    y += p
+    w -= p * 2
+    h -= p * 2
+    return rounded_rectangle(x, y, w, h, r)
+
+def wall(x, y):
+    return [arc(x+0.5, y+0.5, 0.333, 0, 2*pi, 72)]
+    x0 = x + P
+    y0 = y + P
+    x1 = x + 1 - P
+    y1 = y + 1 - P
+    paths = [rectangle(x0, y0, x1 - x0, y1 - y0)]
+    paths.append([(x0, y0), (x1, y1)])
+    paths.append([(x0, y1), (x1, y0)])
+    return paths
+
+def xy(i):
+    x = i % 6
+    y = i // 6
+    return (x, y)
+
+def desc_paths(desc):
+    paths = []
+    lookup = defaultdict(list)
+    for i, c in enumerate(desc):
+        lookup[c].append(i)
+    for c in sorted(lookup):
+        ps = lookup[c]
+        if c == 'o':
+            continue
+        elif c == 'x':
+            for i in ps:
+                x, y = xy(i)
+                paths.extend(wall(x, y))
+        else:
+            stride = ps[1] - ps[0]
+            i0 = ps[0]
+            i1 = ps[-1]
+            x0, y0 = xy(i0)
+            x1, y1 = xy(i1)
+            dx = x1 - x0
+            dy = y1 - y0
+            # paths.append(padded_rounded_rectangle(x0, y0, dx + 1, dy + 1, R, P))
+            if c == 'A':
+                paths.append(padded_rectangle(x0, y0, dx + 1, dy + 1, 0.25))
+            else:
+                paths.append([(x0 + 0.5, y0 + 0.5), (x0 + dx + 0.5, y0 + dy + 0.5)])
+            # if c == 'A':
+            # if stride > 1:
+            if len(ps) == 3:
+            # if stride == 1:
+            # if len(ps) == 2:
+            # if False:
+                paths.append(padded_rectangle(x0, y0, dx + 1, dy + 1, 0.35))
+                # s = 0.1
+                # p = P + s
+                # while p < 0.5:
+                #     paths.append(padded_rounded_rectangle(x0, y0, dx + 1, dy + 1, R, p))
+                #     p += s
+    return paths
+
+def main():
+    drawing = axi.Drawing()
+    font = axi.Font(axi.FUTURAL, 12)
+    n = 0
+    for line in fileinput.input():
+        fields = line.strip().split()
+        desc = fields[1]
+        moves = int(fields[0])
+        # if 'x' in desc:
+        #     continue
+        paths = desc_paths(desc)
+        d = axi.Drawing(paths)
+        i = n % COLS
+        j = n // COLS
+        d = d.translate(i * 8, j * 10)
+        drawing.add(d)
+
+        d = font.wrap(str(moves), 10)
+        d = font.wrap(bin(moves)[2:].replace('1', '\\').replace('0', '/'), 10)
+        # d = d.scale(0.1, 0.1)
+        d = d.scale_to_fit_height(1)
+        d = d.move(i * 8 + 3, j * 10 + 6.5, 0.5, 0)
+        drawing.add(d)
+
+        n += 1
+        if n == N:
+            break
+    # d = axi.Drawing(paths)
+    d = drawing
+    d = d.rotate_and_scale_to_fit(W, H, step=90)
+    d.dump('rush.axi')
+    d.render(bounds=None, show_bounds=False, scale=300).write_to_png('rush.png')
+
+if __name__ == '__main__':
+    main()

requirements.txt

@@ -1,4 +1,7 @@
-cairocffi
-pyserial
-pyhull
-Shapely
+cairocffi==1.2.0
+cffi==1.14.4
+numpy==1.19.5
+pycparser==2.20
+pyhull==2015.2.1
+pyserial==3.5
+Shapely==1.7.1