[squeak-dev] Quadrangle >> exampleInViewer baby graphics bug

Lawson English lenglish5 at cox.net
Sat Apr 24 01:04:20 UTC 2010

Levente Uzonyi wrote:
> On Fri, 23 Apr 2010, Lawson English wrote:
>> Levente Uzonyi wrote:
>>> On Fri, 23 Apr 2010, Lawson English wrote:
>>>> Igor Stasenko wrote:
>>>>> On 24 April 2010 02:05, Lawson English <lenglish5 at cox.net> wrote:
>>>>>> Quadrangle >> exampleInViewer
>>>>>> reports an error: MessageNotUnderstood: Quadrangle>>costume.
>>>>>> Squeak 4.1 fresh image.
>>>>> Ouch... where you dug out this dusty stuff? :)
>>>> Was rummaging around, trying to figure out how to implement a 
>>>> mandelbrot set thingie, and saw that  example.
>>> Have a look at: http://squeaksource.com/MandelMorph2.html
>>> It won't load smoothly, because some method has floats which use 
>>> obsolete formatting (- 2.5), but after fixing those (remove the 
>>> space between - and 2.5) you can evaluate this:
>>> MandelMorph2 new openInWorld
>>> Levente
>> Thanks. I'm still a noob though. How do I fix a package that has 
>> errors when I try to load it?
> You'll get a Syntax Error window. Fix the code there and press cmd+s 
> on mac or alt+s on other platforms.
> Normally this should be enough, but there's a problem with MC. It's 
> not able to load methods other than the fixed one for some reason. So 
> I closed the debugger and merged the package, but rejected the fixed 
> method.
> I saved the package and uploaded here:
> http://leves.web.elte.hu/squeak/MandelMorph2-ul.3.mcz

Thanks. I had gotten that far with John Dougan's help and tried to save 
back to the repository but it wouldn't accept since I lack a password. 
   I converted all references of Floats to Fractions just to see if 
there was an easy way to give it higher precision but it slowed down to 
< Apple ][ speeds when I did that.

Obviously the naive way isn't going to work. I gotta think there's some 
glitch with what I did, or incompatibility with the algorithm and 


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