hershey text

axi/__init__.py

@@ -4,3 +4,39 @@ from .paths import simplify_paths, sort_paths, join_paths, load_paths
 from .planner import Planner
 from .turtle import Turtle
 from .util import draw, reset
+
+from .hershey import text
+from .hershey_fonts import (
+    ASTROLOGY,
+    CURSIVE,
+    CYRILC_1,
+    CYRILLIC,
+    FUTURAL,
+    FUTURAM,
+    GOTHGBT,
+    GOTHGRT,
+    GOTHICENG,
+    GOTHICGER,
+    GOTHICITA,
+    GOTHITT,
+    GREEK,
+    GREEKC,
+    GREEKS,
+    JAPANESE,
+    MARKERS,
+    MATHLOW,
+    MATHUPP,
+    METEOROLOGY,
+    MUSIC,
+    ROWMAND,
+    ROWMANS,
+    ROWMANT,
+    SCRIPTC,
+    SCRIPTS,
+    SYMBOLIC,
+    TIMESG,
+    TIMESI,
+    TIMESIB,
+    TIMESR,
+    TIMESRB,
+)

axi/device.py

@@ -8,7 +8,7 @@ from serial.tools.list_ports import comports
 
 from .planner import Planner
 
-TIMESLICE_MS = 20
+TIMESLICE_MS = 15
 
 MICROSTEPPING_MODE = 2
 STEP_DIVIDER = 2 ** (MICROSTEPPING_MODE - 1)
@@ -24,7 +24,7 @@ PEN_DOWN_POSITION = 40
 PEN_DOWN_SPEED = 150
 PEN_DOWN_DELAY = 0
 
-ACCELERATION = 8
+ACCELERATION = 4
 MAX_VELOCITY = 2
 CORNER_FACTOR = 0.001
 

axi/hershey.py

@@ -0,0 +1,17 @@
+from .hershey_fonts import *
+
+def text(string, font=FUTURAL, spacing=0):
+    result = []
+    x = 0
+    for ch in string:
+        i = ord(ch) - 32
+        if i < 0 or i >= 96:
+            x += spacing
+            continue
+        lt, rt, coords = font[i]
+        for path in coords:
+            path = [(x + i - lt, j) for i, j in path]
+            if path:
+                result.append(path)
+        x += rt - lt + spacing
+    return result

examples/text.py

@@ -0,0 +1,14 @@
+import axi
+
+def main():
+    text = 'Hello, world!'
+    font = axi.FUTURAL
+    d = axi.Drawing(axi.text(text, font))
+    # d = d.rotate_and_scale_to_fit(12, 8.5, step=90)
+    d = d.scale(0.01, 0.01)
+    d = d.center(12, 8.5)
+    d.render().write_to_png('out.png')
+    # axi.draw(d)
+
+if __name__ == '__main__':
+    main()