I hope I get to see the final file. Nice work.

On Jun 26, 2006, at 4:04 PM, Hans Hagen wrote:

> Mojca Miklavec wrote:
>> On 6/27/06, Hans Hagen wrote:
>>
>>> Mojca Miklavec wrote:
>>>
>>>> To Hans: thanks for the hint! (Slowly starting to believe that the
>>>> code might indeed reach 4 lines ;)
>>>>
>>>>
>>> another one:
>>>
>>> vardef mytransform(expr pathorpicture) =
>>>   pathorpicture
>>>     if reflect=2:
>>>       reflectedabout((0,0),(1,1))
>>>     elseif reflect=3:
>>>       reflectedabout((0,0),(1,-1))
>>>     elseif reflect=4:
>>>       reflectedabout((-1,0),(1,0))
>>>     fi
>>> enddef;
>>>
>>> -)
>>>
>>
>> What a waste of space ;) !
>>
>> vardef mytransform(expr pathorpicture) =
>>  pathorpicture
>>    if reflect > 1: reflectedabout(
>>      if     reflect=2: (0,0),(1,1)
>>      elseif reflect=3: (0,0),(1,-1)
>>      elseif reflect=4: (-1,0),(1,0)
>>      fi)
>>    fi
>> enddef;
>>
>> (Slowly starting to believe that MP might become as horrible &
>> unreadable as perl ;)
>>
>>
> that's why i seldom go that far
>
> but the if inside an expresion is ok for me (many languages provide  
> that)
>
> of course a clean solution is:
>
> transform _mt_[] ; reflect := 1 ;
>
> _mt_[1] := identity ;
> _mt_[2] := identity reflectedabout(( 0,0),(1, 1)) ;
> _mt_[3] := identity reflectedabout(( 0,0),(1,-1)) ;
> _mt_[4] := identity reflectedabout((-1,0),(1, 0)) ;
>
> vardef mytransform(expr p) = p transformed _mt_[reflect] enddef; % one
> line -)
>
> draw mytransform(fullcircle scaled 10cm) ;
>
> draw fullcircle scaled 4cm transformed _mt_[reflect] ;
>
>
> Hans
>
> -----------------------------------------------------------------
>                                           Hans Hagen | PRAGMA ADE
>               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
>                                              | www.pragma-pod.nl
> -----------------------------------------------------------------
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