Re: Turtle in browser

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Pierre Quentel

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Oct 2, 2016, 3:46:01 AM10/2/16

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Le samedi 1 octobre 2016 22:18:36 UTC+2, roberci...@gmail.com a écrit :

I have this code which works on Skulpt, but didn't work on Brython on local server? Why?

<!doctype html>
<html>
<head>

 <script type=text/javascript src="../src/brython.js"></script>

<script id="python_script" type="text/python">
 from browser import document, console
 _code=document["div_html"].text

 exec(_code)
 document["processing"].style.display="none"
</script>

<style type="text/css">
.blink {
 animation: blink 1s steps(5, start) infinite;
 -webkit-animation: blink 1s steps(5, start) infinite;
}
@keyframes blink {
 to { visibility: hidden; }
}
@-webkit-keyframes blink {
 to { visibility: hidden; }
}
</style>

</head>

<body onload="brython(1)">
<pre id="div_html" style="float:left">
#
# SOURCE CODE
#
import random
import turtle

def tree(size, myTurtle):
 myTurtle.pensize(size / 10)

 if size < random.randint(1,2) * 20:
 myTurtle.color("green")
 else:
 myTurtle.color("brown")

 if size > 5:
 myTurtle.forward(size)
 myTurtle.left(25)
 tree(size - random.randint(10, 20), myTurtle)
 myTurtle.right(50)
 tree(size - random.randint(10, 20), myTurtle)
 myTurtle.left(25)
 myTurtle.penup()
 myTurtle.backward(size)
 myTurtle.pendown()


window = turtle.Screen()
window.bgcolor("black")

myTurtle = turtle.Turtle()
myTurtle.color("brown", "blue")
myTurtle.left(90)
myTurtle.speed(0)
myTurtle.penup()
myTurtle.setpos(0, -250)
myTurtle.pendown()

tree(120, myTurtle)

turtle._Screen().end()
</pre>

<div id="container" 
 style="float:left;border-style:solid;border-color:black;margin-left:50px"></div>
</body>

<div id="processing" class="blink" 
 style="color:red;position:absolute;z-index:100;width:250px;height:100px;top:50%;left:50%;margin 0 auto;">Processing... Please wait..
</div>

</html>

Can you help me?

When I try to run this code I get an IndentationError after the first "if". Can you send a correctly indented version ?

Message has been deleted

Pierre Quentel

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Oct 2, 2016, 1:22:55 PM10/2/16

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Le dimanche 2 octobre 2016 14:04:50 UTC+2, roberci...@gmail.com a écrit :

This should be work:
http://wklej.org/id/2873431/

The interface of the turtle module for Brython, written by Billy Earney, is not exactly the same. I adapted it to make it work, but Billy would probably have a better version

import random
import turtle

nb = 0

def tree(size, myTurtle):
    myTurtle.pensize(size / 10)

    if size < random.randint(1,2) * 20:
        myTurtle.color("green")
    else:
        myTurtle.color("brown")

    if size > 5:
        myTurtle.forward(size)
        myTurtle.left(25)
        tree(size - random.randint(10, 20), myTurtle)
        myTurtle.right(50)
        tree(size - random.randint(10, 20), myTurtle)
        myTurtle.left(25)
        myTurtle.penup()
        myTurtle.backward(size)
        myTurtle.pendown()

w = turtle.Screen()

w.bgcolor("black")

myTurtle = turtle.Turtle()

t1 = turtle.Turtle('turtle')

t1.color("brown", "blue")

t1.right(90)
t1.penup()
t1.backward(200)
t1.pendown()

tree(120, t1)

turtle._Screen().end()

Message has been deleted

Pierre Quentel

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Oct 3, 2016, 1:50:38 AM10/3/16

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Le dimanche 2 octobre 2016 19:56:58 UTC+2, roberci...@gmail.com a écrit :

I use your code in turtle.html from gallery but still have "Processing...Please wait" on my browser.
http://imgur.com/a/LsSUC

Do you see the animation ?
To remove the message "Processing, please wait", just remove the last DIV on the page

Pierre Quentel

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Oct 3, 2016, 2:06:30 AM10/3/16

to brython

I just realize that I didn't commit and push a bug fix that broke your code. Can you try with the latest development version ?

Christophe Bal

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Oct 3, 2016, 2:35:36 AM10/3/16

to bry...@googlegroups.com

Hello.

$I have tried the example and I only see a black square that does not move.

Christophe BAL

Enseignant de mathématiques en Lycée et développeur Python amateur

---

French teacher of math in a high school and amateur Python developer

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Christophe Bal

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Oct 3, 2016, 7:43:59 AM10/3/16

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Is there a CDN for the latest latest development version ?

Christophe BAL

Enseignant de mathématiques en Lycée et développeur Python amateur

---

French teacher of math in a high school and amateur Python developer

2016-10-03 13:09 GMT+02:00 <roberci...@gmail.com>:

Now works fine. Can I speed up animation of turtle?
Something like
t1.speed(0)

Also how change the drawing area?
In Skulpt I use:
window.setup(800,600)

Thanks

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Kiko

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Oct 3, 2016, 7:52:13 AM10/3/16

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2016-10-03 13:43 GMT+02:00 Christophe Bal <proj...@gmail.com>:

Is there a CDN for the latest latest development version ?

You can always use rawgit: https://rawgit.com/

This is the url for the latest brython_dist.js file:
https://rawgit.com/brython-dev/brython/master/www/src/brython_dist.js

To view this discussion on the web visit https://groups.google.com/d/msgid/brython/CAAb4jGmsK7Xq4xdud2PSYSGxgjppCA34fGs3wt79L%3De6BszbqQ%40mail.gmail.com.

Christophe Bal

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Oct 3, 2016, 7:59:28 AM10/3/16

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Thanks for this.

The code works on Firefox but not in Safari.

Christophe BAL

Enseignant de mathématiques en Lycée et développeur Python amateur

---

French teacher of math in a high school and amateur Python developer

To view this discussion on the web visit https://groups.google.com/d/msgid/brython/CAB-sx60mqmz5J1DPePgr_9i48HjQTCqdJwktK8w2aVfYeKS0%3DQ%40mail.gmail.com.

Pierre Quentel

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Oct 3, 2016, 8:54:58 AM10/3/16

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Le lundi 3 octobre 2016 13:09:59 UTC+2, roberci...@gmail.com a écrit :

Now works fine. Can I speed up animation of turtle?
Something like
t1.speed(0)

I added support of speed in the turtle module in the latest revision. Set it to 1 for slowest, 10 for fastest.

Also how change the drawing area?
In Skulpt I use:
window.setup(800,600)

I don't know. If Billy reads this, does he have the answer ?

Thanks

W dniu poniedziałek, 3 października 2016 08:06:30 UTC+2 użytkownik Pierre Quentel napisał:

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