Does someone know some project/lib/code snippet/whatever that permits adding new shapes for turtle?
I would like to do, e.g:
turtle.shape('ant')
or
turtle.shape('car')
I know I can create new shapes or use images for that, but I want to discover if someone has done this yet, and I won’t want to use pictures now.
Adding new shapes can be done with register_shape. Is there a problem with this approach? Or do you want a list of predefined shapes that includes ant?
This.
Of course, ant was only a hypothetical example.
You could try SVG icons, for example >1500 from Lucide
Examples: car, cat, bug, fish, thumbs-up, tree-pine, sprout, lamp, notebook-pen
Limited (e.g. no <circle/> / car wheels, and using straight lines instead of curves) code:
import re, turtle
import xml.etree.ElementTree as ET
def register_svg(name, xml_string, scale=1):
shape = turtle.Shape("compound")
for path in [path_element.get('d') for path_element in ET.fromstring(xml_string).findall('.//svg:path', namespaces={'svg': 'http://www.w3.org/2000/svg'})]:
commands = [item for groups in re.findall(r"([a-zA-Z])|([-+]?\d*\.?\d+)", path) for item in groups if item]
coordinates = []
cx, cy = 0, 0
i = 0
def number():
nonlocal i
f = float(commands[i])
i += 1
return f*scale
def go(): coordinates.append((cy, cx))
while i < len(commands):
if re.match(r'[a-zA-Z]', commands[i]) is not None:
command = commands[i]
i += 1
i += {'C': 4, 'S': 2, 'A': 5}.get(command.upper(), 0)
if command in 'MLCSAH': cx = number()
if command in 'MLCSAV': cy = number()
if command in 'mlcsah': cx += number()
if command in 'mlcsav': cy += number()
go()
shape.addcomponent(tuple(coordinates), "white", "red")
turtle.register_shape(name, shape)
# Lucide License
# ISC License
# Copyright (c) for portions of Lucide are held by Cole Bemis 2013-2022 as part of Feather (MIT). All other copyright (c) for Lucide are held by Lucide Contributors 2022.
# Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
svgs = {
"car": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-car-icon lucide-car"><path d="M19 17h2c.6 0 1-.4 1-1v-3c0-.9-.7-1.7-1.5-1.9C18.7 10.6 16 10 16 10s-1.3-1.4-2.2-2.3c-.5-.4-1.1-.7-1.8-.7H5c-.6 0-1.1.4-1.4.9l-1.4 2.9A3.7 3.7 0 0 0 2 12v4c0 .6.4 1 1 1h2"/><circle cx="7" cy="17" r="2"/><path d="M9 17h6"/><circle cx="17" cy="17" r="2"/></svg>""",
"cat": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-cat-icon lucide-cat"><path d="M12 5c.67 0 1.35.09 2 .26 1.78-2 5.03-2.84 6.42-2.26 1.4.58-.42 7-.42 7 .57 1.07 1 2.24 1 3.44C21 17.9 16.97 21 12 21s-9-3-9-7.56c0-1.25.5-2.4 1-3.44 0 0-1.89-6.42-.5-7 1.39-.58 4.72.23 6.5 2.23A9.04 9.04 0 0 1 12 5Z"/><path d="M8 14v.5"/><path d="M16 14v.5"/><path d="M11.25 16.25h1.5L12 17l-.75-.75Z"/></svg>""",
"bug": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-bug-icon lucide-bug"><path d="m8 2 1.88 1.88"/><path d="M14.12 3.88 16 2"/><path d="M9 7.13v-1a3.003 3.003 0 1 1 6 0v1"/><path d="M12 20c-3.3 0-6-2.7-6-6v-3a4 4 0 0 1 4-4h4a4 4 0 0 1 4 4v3c0 3.3-2.7 6-6 6"/><path d="M12 20v-9"/><path d="M6.53 9C4.6 8.8 3 7.1 3 5"/><path d="M6 13H2"/><path d="M3 21c0-2.1 1.7-3.9 3.8-4"/><path d="M20.97 5c0 2.1-1.6 3.8-3.5 4"/><path d="M22 13h-4"/><path d="M17.2 17c2.1.1 3.8 1.9 3.8 4"/></svg>""",
"fish": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-fish-icon lucide-fish"><path d="M6.5 12c.94-3.46 4.94-6 8.5-6 3.56 0 6.06 2.54 7 6-.94 3.47-3.44 6-7 6s-7.56-2.53-8.5-6Z"/><path d="M18 12v.5"/><path d="M16 17.93a9.77 9.77 0 0 1 0-11.86"/><path d="M7 10.67C7 8 5.58 5.97 2.73 5.5c-1 1.5-1 5 .23 6.5-1.24 1.5-1.24 5-.23 6.5C5.58 18.03 7 16 7 13.33"/><path d="M10.46 7.26C10.2 5.88 9.17 4.24 8 3h5.8a2 2 0 0 1 1.98 1.67l.23 1.4"/><path d="m16.01 17.93-.23 1.4A2 2 0 0 1 13.8 21H9.5a5.96 5.96 0 0 0 1.49-3.98"/></svg>""",
"thumbs-up": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-thumbs-up-icon lucide-thumbs-up"><path d="M7 10v12"/><path d="M15 5.88 14 10h5.83a2 2 0 0 1 1.92 2.56l-2.33 8A2 2 0 0 1 17.5 22H4a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h2.76a2 2 0 0 0 1.79-1.11L12 2a3.13 3.13 0 0 1 3 3.88Z"/></svg>""",
"tree-pine": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-tree-pine-icon lucide-tree-pine"><path d="m17 14 3 3.3a1 1 0 0 1-.7 1.7H4.7a1 1 0 0 1-.7-1.7L7 14h-.3a1 1 0 0 1-.7-1.7L9 9h-.2A1 1 0 0 1 8 7.3L12 3l4 4.3a1 1 0 0 1-.8 1.7H15l3 3.3a1 1 0 0 1-.7 1.7H17Z"/><path d="M12 22v-3"/></svg>""",
"sprout": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-sprout-icon lucide-sprout"><path d="M7 20h10"/><path d="M10 20c5.5-2.5.8-6.4 3-10"/><path d="M9.5 9.4c1.1.8 1.8 2.2 2.3 3.7-2 .4-3.5.4-4.8-.3-1.2-.6-2.3-1.9-3-4.2 2.8-.5 4.4 0 5.5.8z"/><path d="M14.1 6a7 7 0 0 0-1.1 4c1.9-.1 3.3-.6 4.3-1.4 1-1 1.6-2.3 1.7-4.6-2.7.1-4 1-4.9 2z"/></svg>""",
"lamp": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-lamp-desk-icon lucide-lamp-desk"><path d="M10.293 2.293a1 1 0 0 1 1.414 0l2.5 2.5 5.994 1.227a1 1 0 0 1 .506 1.687l-7 7a1 1 0 0 1-1.687-.506l-1.227-5.994-2.5-2.5a1 1 0 0 1 0-1.414z"/><path d="m14.207 4.793-3.414 3.414"/><path d="M3 20a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v1a1 1 0 0 1-1 1H4a1 1 0 0 1-1-1z"/><path d="m9.086 6.5-4.793 4.793a1 1 0 0 0-.18 1.17L7 18"/></svg>""",
"notebook-pen": """<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-notebook-pen-icon lucide-notebook-pen"><path d="M13.4 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-7.4"/><path d="M2 6h4"/><path d="M2 10h4"/><path d="M2 14h4"/><path d="M2 18h4"/><path d="M21.378 5.626a1 1 0 1 0-3.004-3.004l-5.01 5.012a2 2 0 0 0-.506.854l-.837 2.87a.5.5 0 0 0 .62.62l2.87-.837a2 2 0 0 0 .854-.506z"/></svg>""",
}
for name, svg in svgs.items():
register_svg(name, svg, scale=2)
t = turtle.Turtle()
for i, name in enumerate(svgs):
t.teleport(-300+i*60, 0)
t.shape(name)
t.stamp()
turtle.done()
Wow. It isn’t perfect, but it is a good progress. Thank you, @petersuter
Using something like svgpathtools · PyPI could give better results with less custom code:
from svgpathtools import svgstr2paths, real, imag
def register_svg(name, xml_string, scale=1, N=200):
shape = turtle.Shape("compound")
paths, attrs = svgstr2paths(xml_string)
for path in paths:
coordinates = [(imag(x)*scale,real(x)*scale) for x in [path.point(i/N) for i in range(N)]]
shape.addcomponent(tuple(coordinates), "white", "red")
...
