[squeakland] point towards the mouse?

Rita Freudenberg rita at squeakland.org
Wed Nov 11 05:34:24 EST 2009


Scott Wallace wrote:
> Attached below is another solution, using an invisible "sprite".
>   
Scott, it is great that you uploaded the projects with your solution to 
the showcase! This is a great way to keep ideas like this and make it 
available for everyone.

Rita
>   -- Scott
>
>   
> ------------------------------------------------------------------------
>
>
>
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> On Nov 11, 2009, at 1:02 AM, Scott Wallace wrote:
>
>   
>> On Nov 10, 2009, at 11:02 PM, Darius Clarke wrote:
>>
>>     
>>> For point 1 you can use the slope formula m = (y1-y2)/(x1-x2) and then arcTan m to get degrees. 
>>>
>>> arcTan may have to come from Smalltalk mode. 
>>>
>>> Cheers,
>>> Darius
>>>
>>> On Tue, Nov 10, 2009 at 10:53 PM, Hilaire Fernandes <hilaire.fernandes at edu.ge.ch> wrote:
>>> For point 2.,  you may have to write the script in Smalltalk mode then
>>> use the code
>>>
>>> ActiveHand x to get abscissa of the mouse pointer
>>>
>>> Hilaire
>>>
>>>
>>> 2009/11/11 Bill Kerr <billkerr at gmail.com>:
>>>       
>>>> 1) Is it possible to get an arrow to point towards the mouse pointer in
>>>> etoys?
>>>>         
>> FWIW I attach a working example... notice that it's all done with tiles -- no textual scripting.
>>
>> -- Scott
>>
>>
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-- 
Rita Freudenberg
Squeakland Foundation
http://www.squeakland.org



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