Re: withshade (mlib)

[Peter Rolf <indiego@gmx.net>]

Hans Hagen schrieb:
> Peter Rolf wrote:
> 
>> vardef define_linear_shade (expr a, b, ca, cb) =
>>      hide (_defined_cs_ := _defined_cs_ + 1 ;
>>          _defined_cs_pre_ [_defined_cs_] := "ls" ;
>>          _defined_cs_post_[_defined_cs_] := "0 1 " & decimal shadefactor 
>> & " " &
>>              colordecimals ca & " " & ddecimal (a shifted shadeoffset) & " "
>>              colordecimals cb & " " & ddecimal (b shifted shadeoffset) )
>>      _defined_cs_
>> enddef ;
>>
>> same for define_circular_shade...
>>
>> % testfile ---------------------------------
>> % engine=luatex
>> \setupcolors[state=start]
>> \starttext
>>
>> \null
>> \startMPcode
>>      path p;
>>      p:= unitsquare xyscaled(10cm,1cm);
>>      fill p withshade
>>      define_linear_shade(p,1,red,blue);
>> \stopMPcode
>>
>> \stoptext
> 
> i uploaded a new beta but anyhow, your definition is wrong
> 
> \startMPcode
>       path p;
>       p:= unitsquare xyscaled (10cm,1cm) ;
>       fill p withshade (define_linear_shade(llcorner p, urcorner 
> p,red,blue)) ;
> \stopMPcode
> 
> so, the first two arguments are pairs
> 
oeps. mea culpa :(

thanks for taking the time. the corrected example works with the latest 
beta (and probably with any older versions too). and yes, i'm an idiot.

peter

> 
> 
> 
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