John Voiklis | 6 Oct 02:15 2014
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from: John Voiklis

Hi squeakland


http://PARSAUTOMART.com/fun.php?region=vzymbwcvgf3502emya

voiklis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
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   ======== Nice thoughts for everyone but me. Oh well, I'm used to it. Unless
   of course your shorts are made of chocolate. -- John Dobbin [...] 

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From: origbj@... <origbj@...>
Subject: origbj@...
Date: 2014-09-26 23:03:05 GMT

Bj Allen-Conn


















Bj Allen-Conn
origbj-YDxpq3io04c@public.gmane.org





========
Nice thoughts for everyone but me. Oh well, I'm used to it. Unless of course your shorts are made of chocolate. -- John Dobbin
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Rita | 4 Sep 15:32 2014

[Squeakland News] How to do timing in Etoys?

I just got this question from my students and I thought there might be others with similar interests. So how can I control sequences of actions over time? Say, I want to use speech bubbles to tell a story. I have a number of sentences to show, one after another, and I want to let some time pass between them to give the reader time to read. How can I do that?

Well, I can build a timer and check the time to trigger actions when a certain time is reached. How can I build a timer?

First of all, you need a variable to count time steps. Open the viewer for your object. Create a variable by clicking the "v" - symbol in the top row of the viewer and give your variable a name. I choose "seconds". The default type is "Number", which is fine and 0 decimals places are perfect as well.


Now open a new empty script and drag the tiles to assign a new value to your variable into the script. Change the operation to "increase by" and the number to "1". Make sure the value of your variable is "0" at the start! Name the script "timer".


You do know already that the script, once started, will be executed repeatedly until it is being stopped, right? Do you also know how fast or how slowly this happens? You can see this when you click on the watch in the top row of the scriptor and hold the mouse button down. And you can also change it there! By default, it will be executed 8 times per second. Change this into once per second!



When you now start the script, each second it will increase the value of your variable "seconds" by 1! Now you can use the value of the variable in other scripts:


Use a all-scripts-tile from the supplies to start both, your script and the timer, at the same time and watch :)

Please note: It depends on your computer and what other programs are running on it at the same time, if a second in the Etoys project will be the same as a second at a real clock. It may not be exactly the same, but probably close. It is definitely good enough to control the flow of a story, but for scientific experiments, you should use a real timer!

You can also find a tutorial to build a timer in project 6 of the book "Powerful Ideas in the classroom" by Kim Rose and B.J. Allen-Conn.



--
Von Rita am 9/04/2014 06:32:00 vorm. unter Squeakland News eingestellt
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Steve Thomas | 24 Mar 21:50 2014

Re: computed costumes

Ted,

I had a similar problem trying to visualize all the different combinations of turn by angles in a loop.

In Etoys its simple. Make the drawing on a hidden playfied.  Then set the Sketch's graphic to the Playfield's: pen trail graphic



Cheers,
Stephen


On Mon, Mar 24, 2014 at 12:31 PM, Ted Kaehler <Ted-uVco7kAcSAQ@public.gmane.org> wrote:
Folks,
        I'm building a math demo.  It is a complex diagram that changes as the user moves a slider.  I'm using the turtle Pen to draw the diagram.  It needs to be "double-buffered" so that the user does not see the area get cleared to white and does not see the drawing being made.  That is, no flashing.
        Here's the plan.  Make a drawing (SketchMorph).  Make another drawing that is the same size and hide it.  Each sketch will be a costume for a player of the first sketch.
        Whenever the slider moves, get the Form of the sketch that is not currently showing.  Draw into it with the Pen.  Switch it to be the costume that shows.
        Is there a simpler way to do this in Etoys?
        If not, maybe we can extend Etoys to allow this, so an author does not need to know Squeak to make it happen.

--Ted.

--
Ted Kaehler
If you're not hungry enough to eat an apple, then you're not hungry. If you are that hungry, then do eat an apple.  -- paraphrasing Michael Pollan.
http://www.vpri.org/html/team_bios/kaehler.html
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--

To some of us, writing computer programs is a fascinating game. A program is a building of thought. It is costless to build, weightless, growing easily under our typing hands. If we get carried away, its size and complexity will grow out of control, confusing even the one who created it. This is the main problem of programming. It is why so much of today's software tends to crash, fail, screw up.

When a program works, it is beautiful. The art of programming is the skill of controlling complexity. The great program is subdued, made simple in its complexity.

- Martin Harverbeke (from Eloquent JavaScript)

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Ted Kaehler | 24 Mar 17:31 2014

computed costumes

Folks,
	I'm building a math demo.  It is a complex diagram that 
changes as the user moves a slider.  I'm using the turtle Pen to draw 
the diagram.  It needs to be "double-buffered" so that the user does 
not see the area get cleared to white and does not see the drawing 
being made.  That is, no flashing.
	Here's the plan.  Make a drawing (SketchMorph).  Make another 
drawing that is the same size and hide it.  Each sketch will be a 
costume for a player of the first sketch.
	Whenever the slider moves, get the Form of the sketch that is 
not currently showing.  Draw into it with the Pen.  Switch it to be 
the costume that shows.
	Is there a simpler way to do this in Etoys?
	If not, maybe we can extend Etoys to allow this, so an author 
does not need to know Squeak to make it happen.

--Ted.

--

-- 
Ted Kaehler
If you're not hungry enough to eat an apple, then you're not hungry. 
If you are that hungry, then do eat an apple.  -- paraphrasing 
Michael Pollan.
http://www.vpri.org/html/team_bios/kaehler.html
Bert Freudenberg | 6 Mar 02:01 2014
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Re: MPEG movie crashes Etoys


On 05.03.2014, at 06:12, Young-Jin Lee
<youngjin.michael@...> wrote:

> Could you explain in more detail how I can get around this problem? The URL in your email is a link to an mpeg
file. I am not sure what I need to do with this mpeg file to resolve the MPEGPlayer issue.

You can analyze how its encoding differs from your file's encoding, then use the new encoder settings to
convert your own files.

- Bert -

> 
> Thanks in advance.
> 
> Young-Jin
> 
> On Mar 5, 2014, at 12:40 AM, Bert Freudenberg <bert@...> wrote:
> 
>> On 03.03.2014, at 17:56, Young-Jin Lee
<youngjin.michael@...> wrote:
>> 
>>> I was trying to use MPEG movies in Etoys. I created MPEG profile-1 movies from MP4 movies using a free
software called Kigo Video Converter. I found that Etoys always crashes when I was trying to play one of the
converted MPEG movies, which I don’t understand because I used the same converter software and was able
to play the converted MPEG movie file using QuickTime Player without any problem. 
>>> 
>>> Can anyone explain why this is happening and how I can get around the problem? In the previous email I
attached the original mp4 file and the converted mpeg file, but I was asked to email again without those
files. 
>>> 
>>> Thank you so much for your help.
>>> 
>>> Young-Jin
>> 
>> The MPEG player is very picky. Here is a file that does work:
>> 
>> 	http://sumim.no-ip.com/collab/uploads/61/Sketchpad-Short.mpg
>> 
>> - Bert -
>> 
>> 
> 

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Young-Jin Lee | 4 Mar 02:56 2014
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MPEG movie crashes Etoys

I was trying to use MPEG movies in Etoys. I created MPEG profile-1 movies from MP4 movies using a free
software called Kigo Video Converter. I found that Etoys always crashes when I was trying to play one of the
converted MPEG movies, which I don’t understand because I used the same converter software and was able
to play the converted MPEG movie file using QuickTime Player without any problem. 

Can anyone explain why this is happening and how I can get around the problem? In the previous email I
attached the original mp4 file and the converted mpeg file, but I was asked to email again without those
files. 

Thank you so much for your help.

Young-Jin
Carlos Rabassa | 21 Feb 18:26 2014
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Montevideo single mother works from home

Hi!

This looked like spam/scam but since the headline mentioned my hometown I felt obligated to investigate a bit more.


Carlos


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  1. Salutations, Squeakland (John Voiklis)


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From: "John Voiklis" <voiklis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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Subject: [squeakland] Salutations, Squeakland
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John Voiklis


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Ducharme's Precept: Opportunity always knocks at the least opportune moment.





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John Voiklis | 21 Feb 16:11 2014
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Salutations, Squeakland



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voiklis-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

John Voiklis


=============================


Ducharme's Precept: Opportunity always knocks at the least opportune moment.
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Young-Jin Lee | 7 Feb 20:31 2014
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[Q] Including a media file in a project file

Hello,

I am looking for a way to include an audio file in the Etoys project file. I found that the recorded sound (or
imported sound) is not included in the Etoys project file when it is saved. Thus when I opened the project
next time, I could not hear the sound because Etoys could not find the sound file. I guess that the same thing
will happen to an mpeg movie file.

Is there a way to make Etoys include a media file when it saves the project file?

Thank you so much for your help.

Young-Jin Lee
Young-Jin Lee | 6 Feb 18:35 2014
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[Q] how to stop a long sound

Hi,

Is there a way to stop a long sound before it finishes? I found that Etoys’ Sound Library can stop the sound
being played, but the “stop sound” command tile in the sound category does not work. Once sound starts
by executing the “make sound XXX” command tile, executing the “stop sound” command tile has no
effect. 

Thanks for your help.

Young-Jin Lee

Gmane